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FFmpeg/ffmpeg.c

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  1. /*

  2.  * FFmpeg main 

  3.  * Copyright (c) 2000-2003 Fabrice Bellard

  4.  *

  5.  * This library is free software; you can redistribute it and/or

  6.  * modify it under the terms of the GNU Lesser General Public

  7.  * License as published by the Free Software Foundation; either

  8.  * version 2 of the License, or (at your option) any later version.

  9.  *

  10.  * This library is distributed in the hope that it will be useful,

  11.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  12.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  13.  * Lesser General Public License for more details.

  14.  *

  15.  * You should have received a copy of the GNU Lesser General Public

  16.  * License along with this library; if not, write to the Free Software

  17.  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

  18.  */

  19. #define HAVE_AV_CONFIG_H

  20. #include "avformat.h"

  21. #include "framehook.h"

  22. 

  23. #ifndef CONFIG_WIN32

  24. #include <unistd.h>

  25. #include <fcntl.h>

  26. #include <sys/ioctl.h>

  27. #include <sys/time.h>

  28. #include <termios.h>

  29. #include <sys/resource.h>

  30. #include <signal.h>

  31. #endif

  32. #ifdef CONFIG_OS2

  33. #include <sys/types.h>

  34. #include <sys/select.h>

  35. #include <stdlib.h>

  36. #endif

  37. #include <time.h>

  38. 

  39. #include "cmdutils.h"

  40. 

  41. #if !defined(INFINITY) && defined(HUGE_VAL)

  42. #define INFINITY HUGE_VAL

  43. #endif

  44. 

  45. /* select an input stream for an output stream */

  46. typedef struct AVStreamMap {

  47.     int file_index;

  48.     int stream_index;

  49. } AVStreamMap;

  50. 

  51. extern const OptionDef options[];

  52. 

  53. static void show_help(void);

  54. static void show_license(void);

  55. 

  56. #define MAX_FILES 20

  57. 

  58. static AVFormatContext *input_files[MAX_FILES];

  59. static int nb_input_files = 0;

  60. 

  61. static AVFormatContext *output_files[MAX_FILES];

  62. static int nb_output_files = 0;

  63. 

  64. static AVStreamMap stream_maps[MAX_FILES];

  65. static int nb_stream_maps;

  66. 

  67. static AVInputFormat *file_iformat;

  68. static AVOutputFormat *file_oformat;

  69. static AVImageFormat *image_format;

  70. static int frame_width  = 160;

  71. static int frame_height = 128;

  72. static float frame_aspect_ratio = 0;

  73. static enum PixelFormat frame_pix_fmt = PIX_FMT_YUV420P;

  74. static int frame_topBand  = 0;

  75. static int frame_bottomBand = 0;

  76. static int frame_leftBand  = 0;

  77. static int frame_rightBand = 0;

  78. static int frame_rate = 25;

  79. static int frame_rate_base = 1;

  80. static int video_bit_rate = 200*1000;

  81. static int video_bit_rate_tolerance = 4000*1000;

  82. static float video_qscale = 0;

  83. static int video_qmin = 2;

  84. static int video_qmax = 31;

  85. static int video_mb_qmin = 2;

  86. static int video_mb_qmax = 31;

  87. static int video_qdiff = 3;

  88. static float video_qblur = 0.5;

  89. static float video_qcomp = 0.5;

  90. #if 0 //experimental, (can be removed)

  91. static float video_rc_qsquish=1.0;

  92. static float video_rc_qmod_amp=0;

  93. static int video_rc_qmod_freq=0;

  94. #endif

  95. static char *video_rc_override_string=NULL;

  96. static char *video_rc_eq="tex^qComp";

  97. static int video_rc_buffer_size=0;

  98. static float video_rc_buffer_aggressivity=1.0;

  99. static int video_rc_max_rate=0;

  100. static int video_rc_min_rate=0;

  101. static float video_rc_initial_cplx=0;

  102. static float video_b_qfactor = 1.25;

  103. static float video_b_qoffset = 1.25;

  104. static float video_i_qfactor = -0.8;

  105. static float video_i_qoffset = 0.0;

  106. static int me_method = ME_EPZS;

  107. static int video_disable = 0;

  108. static int video_codec_id = CODEC_ID_NONE;

  109. static int same_quality = 0;

  110. static int b_frames = 0;

  111. static int mb_decision = FF_MB_DECISION_SIMPLE;

  112. static int use_4mv = 0;

  113. static int use_aic = 0;

  114. static int use_umv = 0;

  115. static int do_deinterlace = 0;

  116. static int workaround_bugs = FF_BUG_AUTODETECT;

  117. static int error_resilience = 2;

  118. static int error_concealment = 3;

  119. static int dct_algo = 0;

  120. static int idct_algo = 0;

  121. static int use_part = 0;

  122. static int packet_size = 0;

  123. static int strict = 0;

  124. static int debug = 0;

  125. extern int loop_input; /* currently a hack */

  126. 

  127. static int gop_size = 12;

  128. static int intra_only = 0;

  129. static int audio_sample_rate = 44100;

  130. static int audio_bit_rate = 64000;

  131. static int audio_disable = 0;

  132. static int audio_channels = 1;

  133. static int audio_codec_id = CODEC_ID_NONE;

  134. 

  135. static int64_t recording_time = 0;

  136. static int64_t start_time = 0;

  137. static int file_overwrite = 0;

  138. static char *str_title = NULL;

  139. static char *str_author = NULL;

  140. static char *str_copyright = NULL;

  141. static char *str_comment = NULL;

  142. static int do_benchmark = 0;

  143. static int do_hex_dump = 0;

  144. static int do_psnr = 0;

  145. static int do_vstats = 0;

  146. static int do_pass = 0;

  147. static int bitexact = 0;

  148. static char *pass_logfilename = NULL;

  149. static int audio_stream_copy = 0;

  150. static int video_stream_copy = 0;

  151. 

  152. static int rate_emu = 0;

  153. 

  154. static char *video_grab_format = "video4linux";

  155. static char *video_device = NULL;

  156. static int  video_channel = 0;

  157. static char *video_standard = "ntsc";

  158. 

  159. static char *audio_grab_format = "audio_device";

  160. static char *audio_device = NULL;

  161. 

  162. static int using_stdin = 0;

  163. static int using_vhook = 0;

  164. static int verbose = 1;

  165. 

  166. #define DEFAULT_PASS_LOGFILENAME "ffmpeg2pass"

  167. 

  168. typedef struct AVOutputStream {

  169.     int file_index;          /* file index */

  170.     int index;               /* stream index in the output file */

  171.     int source_index;        /* AVInputStream index */

  172.     AVStream *st;            /* stream in the output file */

  173.     int encoding_needed;     /* true if encoding needed for this stream */

  174.     int frame_number;

  175.     /* input pts and corresponding output pts

  176.        for A/V sync */

  177.     double sync_ipts;

  178.     double sync_ipts_offset;

  179.     int64_t sync_opts;

  180.     /* video only */

  181.     int video_resample;      /* video_resample and video_crop are mutually exclusive */

  182.     AVPicture pict_tmp;      /* temporary image for resampling */

  183.     ImgReSampleContext *img_resample_ctx; /* for image resampling */

  184. 

  185.     int video_crop;          /* video_resample and video_crop are mutually exclusive */

  186.     int topBand;             /* cropping area sizes */

  187.     int leftBand;

  188.     

  189.     /* audio only */

  190.     int audio_resample;

  191.     ReSampleContext *resample; /* for audio resampling */

  192.     FifoBuffer fifo;     /* for compression: one audio fifo per codec */

  193.     FILE *logfile;

  194. } AVOutputStream;

  195. 

  196. typedef struct AVInputStream {

  197.     int file_index;

  198.     int index;

  199.     AVStream *st;

  200.     int discard;             /* true if stream data should be discarded */

  201.     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */

  202.     int64_t sample_index;      /* current sample */

  203.     int frame_decoded;       /* true if a video or audio frame has been decoded */

  204. 

  205.     int64_t       start;     /* time when read started */

  206.     unsigned long frame;     /* current frame */

  207.     AVFrac        next_pts;  /* synthetic pts for cases where pkt.pts == 0 */

  208.     int64_t       pts;       /* current pts */

  209. } AVInputStream;

  210. 

  211. typedef struct AVInputFile {

  212.     int eof_reached;      /* true if eof reached */

  213.     int ist_index;        /* index of first stream in ist_table */

  214.     int buffer_size;      /* current total buffer size */

  215.     int buffer_size_max;  /* buffer size at which we consider we can stop

  216.                              buffering */

  217.     int nb_streams;       /* nb streams we are aware of */

  218. } AVInputFile;

  219. 

  220. #ifndef CONFIG_WIN32

  221. 

  222. /* init terminal so that we can grab keys */

  223. static struct termios oldtty;

  224. 

  225. static void term_exit(void)

  226. {

  227.     tcsetattr (0, TCSANOW, &oldtty);

  228. }

  229. 

  230. static volatile sig_atomic_t received_sigterm = 0;

  231. 

  232. static void

  233. sigterm_handler(int sig)

  234. {

  235.     received_sigterm = sig;

  236.     term_exit();

  237. }

  238. 

  239. static void term_init(void)

  240. {

  241.     struct termios tty;

  242. 

  243.     tcgetattr (0, &tty);

  244.     oldtty = tty;

  245. 

  246.     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP

  247.                           |INLCR|IGNCR|ICRNL|IXON);

  248.     tty.c_oflag |= OPOST;

  249.     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);

  250.     tty.c_cflag &= ~(CSIZE|PARENB);

  251.     tty.c_cflag |= CS8;

  252.     tty.c_cc[VMIN] = 1;

  253.     tty.c_cc[VTIME] = 0;

  254.     

  255.     tcsetattr (0, TCSANOW, &tty);

  256. 

  257.     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */

  258.     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */

  259.     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */

  260.     /*

  261.     register a function to be called at normal program termination

  262.     */

  263.     atexit(term_exit);

  264. #ifdef CONFIG_BEOS_NETSERVER

  265.     fcntl(0, F_SETFL, fcntl(0, F_GETFL) | O_NONBLOCK);

  266. #endif

  267. }

  268. 

  269. /* read a key without blocking */

  270. static int read_key(void)

  271. {

  272.     int n = 1;

  273.     unsigned char ch;

  274. #ifndef CONFIG_BEOS_NETSERVER

  275.     struct timeval tv;

  276.     fd_set rfds;

  277. 

  278.     FD_ZERO(&rfds);

  279.     FD_SET(0, &rfds);

  280.     tv.tv_sec = 0;

  281.     tv.tv_usec = 0;

  282.     n = select(1, &rfds, NULL, NULL, &tv);

  283. #endif

  284.     if (n > 0) {

  285.         n = read(0, &ch, 1);

  286.         if (n == 1)

  287.             return ch;

  288. 

  289.         return n;

  290.     }

  291.     return -1;

  292. }

  293. 

  294. #else

  295. 

  296. static volatile int received_sigterm = 0;

  297. 

  298. /* no interactive support */

  299. static void term_exit(void)

  300. {

  301. }

  302. 

  303. static void term_init(void)

  304. {

  305. }

  306. 

  307. static int read_key(void)

  308. {

  309.     return 0;

  310. }

  311. 

  312. #endif

  313. 

  314. static int read_ffserver_streams(AVFormatContext *s, const char *filename)

  315. {

  316.     int i, err;

  317.     AVFormatContext *ic;

  318. 

  319.     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);

  320.     if (err < 0)

  321.         return err;

  322.     /* copy stream format */

  323.     s->nb_streams = ic->nb_streams;

  324.     for(i=0;i<ic->nb_streams;i++) {

  325.         AVStream *st;

  326. 

  327.         st = av_mallocz(sizeof(AVStream));

  328.         memcpy(st, ic->streams[i], sizeof(AVStream));

  329.         s->streams[i] = st;

  330.     }

  331. 

  332.     av_close_input_file(ic);

  333.     return 0;

  334. }

  335. 

  336. #define MAX_AUDIO_PACKET_SIZE (128 * 1024)

  337. 

  338. static void do_audio_out(AVFormatContext *s, 

  339.                          AVOutputStream *ost, 

  340.                          AVInputStream *ist,

  341.                          unsigned char *buf, int size)

  342. {

  343.     uint8_t *buftmp;

  344.     static uint8_t *audio_buf = NULL;

  345.     static uint8_t *audio_out = NULL;

  346.     const int audio_out_size= 4*MAX_AUDIO_PACKET_SIZE;

  347. 

  348.     int size_out, frame_bytes, ret;

  349.     AVCodecContext *enc;

  350. 

  351.     /* SC: dynamic allocation of buffers */

  352.     if (!audio_buf)

  353.         audio_buf = av_malloc(2*MAX_AUDIO_PACKET_SIZE);

  354.     if (!audio_out)

  355.         audio_out = av_malloc(audio_out_size);

  356.     if (!audio_buf || !audio_out)

  357.         return;               /* Should signal an error ! */

  358. 

  359.     

  360.     enc = &ost->st->codec;

  361. 

  362.     if (ost->audio_resample) {

  363.         buftmp = audio_buf;

  364.         size_out = audio_resample(ost->resample, 

  365.                                   (short *)buftmp, (short *)buf,

  366.                                   size / (ist->st->codec.channels * 2));

  367.         size_out = size_out * enc->channels * 2;

  368.     } else {

  369.         buftmp = buf;

  370.         size_out = size;

  371.     }

  372. 

  373.     /* now encode as many frames as possible */

  374.     if (enc->frame_size > 1) {

  375.         /* output resampled raw samples */

  376.         fifo_write(&ost->fifo, buftmp, size_out, 

  377.                    &ost->fifo.wptr);

  378. 

  379.         frame_bytes = enc->frame_size * 2 * enc->channels;

  380.         

  381.         while (fifo_read(&ost->fifo, audio_buf, frame_bytes, 

  382.                      &ost->fifo.rptr) == 0) {

  383.             ret = avcodec_encode_audio(enc, audio_out, audio_out_size, 

  384.                                        (short *)audio_buf);

  385.             av_write_frame(s, ost->index, audio_out, ret);

  386.         }

  387.     } else {

  388.         /* output a pcm frame */

  389.         /* XXX: change encoding codec API to avoid this ? */

  390.         switch(enc->codec->id) {

  391.         case CODEC_ID_PCM_S16LE:

  392.         case CODEC_ID_PCM_S16BE:

  393.         case CODEC_ID_PCM_U16LE:

  394.         case CODEC_ID_PCM_U16BE:

  395.             break;

  396.         default:

  397.             size_out = size_out >> 1;

  398.             break;

  399.         }

  400.         ret = avcodec_encode_audio(enc, audio_out, size_out, 

  401. 				   (short *)buftmp);

  402.         av_write_frame(s, ost->index, audio_out, ret);

  403.     }

  404. }

  405. 

  406. static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)

  407. {

  408.     AVCodecContext *dec;

  409.     AVPicture *picture2;

  410.     AVPicture picture_tmp;

  411.     uint8_t *buf = 0;

  412. 

  413.     dec = &ist->st->codec;

  414. 

  415.     /* deinterlace : must be done before any resize */

  416.     if (do_deinterlace || using_vhook) {

  417.         int size;

  418. 

  419.         /* create temporary picture */

  420.         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);

  421.         buf = av_malloc(size);

  422.         if (!buf)

  423.             return;

  424.         

  425.         picture2 = &picture_tmp;

  426.         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);

  427. 

  428.         if (do_deinterlace){

  429.             if(avpicture_deinterlace(picture2, picture, 

  430.                                      dec->pix_fmt, dec->width, dec->height) < 0) {

  431.                 /* if error, do not deinterlace */

  432.                 av_free(buf);

  433.                 buf = NULL;

  434.                 picture2 = picture;

  435.             }

  436.         } else {

  437.             if (img_convert(picture2, dec->pix_fmt, picture, 

  438.                             dec->pix_fmt, dec->width, dec->height) < 0) {

  439.                 /* if error, do not copy */

  440.                 av_free(buf);

  441.                 buf = NULL;

  442.                 picture2 = picture;

  443.             }

  444.         }

  445.     } else {

  446.         picture2 = picture;

  447.     }

  448. 

  449.     frame_hook_process(picture2, dec->pix_fmt, dec->width, dec->height);

  450. 

  451.     if (picture != picture2)

  452.         *picture = *picture2;

  453.     *bufp = buf;

  454. }

  455. 

  456. /* we begin to correct av delay at this threshold */

  457. #define AV_DELAY_MAX 0.100

  458. 

  459. static void do_video_out(AVFormatContext *s, 

  460.                          AVOutputStream *ost, 

  461.                          AVInputStream *ist,

  462.                          AVPicture *in_picture,

  463.                          int *frame_size, AVOutputStream *audio_sync)

  464. {

  465.     int nb_frames, i, ret;

  466.     AVPicture *final_picture, *formatted_picture;

  467.     AVPicture picture_format_temp, picture_crop_temp;

  468.     static uint8_t *video_buffer;

  469.     uint8_t *buf = NULL, *buf1 = NULL;

  470.     AVCodecContext *enc, *dec;

  471.     enum PixelFormat target_pixfmt;

  472. 

  473. #define VIDEO_BUFFER_SIZE (1024*1024)

  474. 

  475.     enc = &ost->st->codec;

  476.     dec = &ist->st->codec;

  477. 

  478.     /* by default, we output a single frame */

  479.     nb_frames = 1;

  480. 

  481.     *frame_size = 0;

  482. 

  483.     /* NOTE: the A/V sync is always done by considering the audio is

  484.        the master clock. It is suffisant for transcoding or playing,

  485.        but not for the general case */

  486.     if (audio_sync) {

  487.         /* compute the A-V delay and duplicate/remove frames if needed */

  488.         double adelta, vdelta, av_delay;

  489. 

  490.         adelta = audio_sync->sync_ipts - ((double)audio_sync->sync_opts * 

  491.             s->pts_num / s->pts_den);

  492. 

  493.         vdelta = ost->sync_ipts - ((double)ost->sync_opts *

  494.             s->pts_num / s->pts_den);

  495. 

  496.         av_delay = adelta - vdelta;

  497.         //            printf("delay=%f\n", av_delay);

  498.         if (av_delay < -AV_DELAY_MAX)

  499.             nb_frames = 2;

  500.         else if (av_delay > AV_DELAY_MAX)

  501.             nb_frames = 0;

  502.     } else {

  503.         double vdelta;

  504. 

  505.         vdelta = (double)(ost->st->pts.val) * s->pts_num / s->pts_den - (ost->sync_ipts - ost->sync_ipts_offset);

  506.         if (vdelta < 100 && vdelta > -100 && ost->sync_ipts_offset) {

  507.             if (vdelta < -AV_DELAY_MAX)

  508.                 nb_frames = 2;

  509.             else if (vdelta > AV_DELAY_MAX)

  510.                 nb_frames = 0;

  511.         } else {

  512.             ost->sync_ipts_offset -= vdelta;

  513.             if (!ost->sync_ipts_offset)

  514.                 ost->sync_ipts_offset = 0.000001; /* one microsecond */

  515.         }

  516.     }

  517.     

  518. #if defined(AVSYNC_DEBUG)

  519.     static char *action[] = { "drop frame", "copy frame", "dup frame" };

  520.     if (audio_sync)

  521.         fprintf(stderr, "Input APTS %12.6f, output APTS %12.6f, ",

  522. 	        (double) audio_sync->sync_ipts, 

  523. 	        (double) audio_sync->st->pts.val * s->pts_num / s->pts_den);

  524.     fprintf(stderr, "Input VPTS %12.6f, output VPTS %12.6f: %s\n",

  525.             (double) ost->sync_ipts, 

  526.   	    (double) ost->st->pts.val * s->pts_num / s->pts_den,

  527.             action[nb_frames]);

  528. #endif

  529. 

  530.     if (nb_frames <= 0) 

  531.         return;

  532. 

  533.     if (!video_buffer)

  534.         video_buffer = av_malloc(VIDEO_BUFFER_SIZE);

  535.     if (!video_buffer)

  536.         return;

  537. 

  538.     /* convert pixel format if needed */

  539.     target_pixfmt = ost->video_resample ? PIX_FMT_YUV420P : enc->pix_fmt;

  540.     if (dec->pix_fmt != target_pixfmt) {

  541.         int size;

  542. 

  543.         /* create temporary picture */

  544.         size = avpicture_get_size(target_pixfmt, dec->width, dec->height);

  545.         buf = av_malloc(size);

  546.         if (!buf)

  547.             return;

  548.         formatted_picture = &picture_format_temp;

  549.         avpicture_fill(formatted_picture, buf, target_pixfmt, dec->width, dec->height);

  550.         

  551.         if (img_convert(formatted_picture, target_pixfmt, 

  552.                         in_picture, dec->pix_fmt, 

  553.                         dec->width, dec->height) < 0) {

  554.             fprintf(stderr, "pixel format conversion not handled\n");

  555.             goto the_end;

  556.         }

  557.     } else {

  558.         formatted_picture = in_picture;

  559.     }

  560. 

  561.     /* XXX: resampling could be done before raw format convertion in

  562.        some cases to go faster */

  563.     /* XXX: only works for YUV420P */

  564.     if (ost->video_resample) {

  565.         final_picture = &ost->pict_tmp;

  566.         img_resample(ost->img_resample_ctx, final_picture, formatted_picture);

  567. 	if (enc->pix_fmt != PIX_FMT_YUV420P) {

  568.             int size;

  569. 	    

  570. 	    av_free(buf);

  571.             /* create temporary picture */

  572.             size = avpicture_get_size(enc->pix_fmt, enc->width, enc->height);

  573.             buf = av_malloc(size);

  574.             if (!buf)

  575.                 return;

  576.             final_picture = &picture_format_temp;

  577.             avpicture_fill(final_picture, buf, enc->pix_fmt, enc->width, enc->height);

  578.         

  579.             if (img_convert(final_picture, enc->pix_fmt, 

  580.                             &ost->pict_tmp, PIX_FMT_YUV420P, 

  581.                             enc->width, enc->height) < 0) {

  582.                 fprintf(stderr, "pixel format conversion not handled\n");

  583.                 goto the_end;

  584.             }

  585. 	}

  586.     } else if (ost->video_crop) {

  587.         picture_crop_temp.data[0] = formatted_picture->data[0] +

  588.                 (ost->topBand * formatted_picture->linesize[0]) + ost->leftBand;

  589. 

  590.         picture_crop_temp.data[1] = formatted_picture->data[1] +

  591.                 ((ost->topBand >> 1) * formatted_picture->linesize[1]) +

  592.                 (ost->leftBand >> 1);

  593. 

  594.         picture_crop_temp.data[2] = formatted_picture->data[2] +

  595.                 ((ost->topBand >> 1) * formatted_picture->linesize[2]) +

  596.                 (ost->leftBand >> 1);

  597. 

  598.         picture_crop_temp.linesize[0] = formatted_picture->linesize[0];

  599.         picture_crop_temp.linesize[1] = formatted_picture->linesize[1];

  600.         picture_crop_temp.linesize[2] = formatted_picture->linesize[2];

  601.         final_picture = &picture_crop_temp;

  602.     } else {

  603.         final_picture = formatted_picture;

  604.     }

  605.     /* duplicates frame if needed */

  606.     /* XXX: pb because no interleaving */

  607.     for(i=0;i<nb_frames;i++) {

  608.         if (s->oformat->flags & AVFMT_RAWPICTURE) {

  609.             /* raw pictures are written as AVPicture structure to

  610.                avoid any copies. We support temorarily the older

  611.                method. */

  612.             AVFrame* old_frame = enc->coded_frame;

  613. 	    enc->coded_frame = dec->coded_frame;

  614.             av_write_frame(s, ost->index, 

  615.                            (uint8_t *)final_picture, sizeof(AVPicture));

  616. 	    enc->coded_frame = old_frame;

  617.         } else {

  618.             AVFrame big_picture;

  619.             

  620.             memset(&big_picture, 0, sizeof(AVFrame));

  621.             *(AVPicture*)&big_picture= *final_picture;

  622.                         

  623.             /* handles sameq here. This is not correct because it may

  624.                not be a global option */

  625.             if (same_quality) {

  626.                 big_picture.quality = ist->st->quality;

  627.             }else

  628.                 big_picture.quality = ost->st->quality;

  629.             

  630.             ret = avcodec_encode_video(enc, 

  631.                                        video_buffer, VIDEO_BUFFER_SIZE,

  632.                                        &big_picture);

  633.             //enc->frame_number = enc->real_pict_num;

  634.             av_write_frame(s, ost->index, video_buffer, ret);

  635.             *frame_size = ret;

  636.             //fprintf(stderr,"\nFrame: %3d %3d size: %5d type: %d",

  637.             //        enc->frame_number-1, enc->real_pict_num, ret,

  638.             //        enc->pict_type);

  639.             /* if two pass, output log */

  640.             if (ost->logfile && enc->stats_out) {

  641.                 fprintf(ost->logfile, "%s", enc->stats_out);

  642.             }

  643.         }

  644.         ost->frame_number++;

  645.     }

  646.  the_end:

  647.     av_free(buf);

  648.     av_free(buf1);

  649. }

  650. 

  651. static double psnr(double d){

  652.     if(d==0) return INFINITY;

  653.     return -10.0*log(d)/log(10.0);

  654. }

  655. 

  656. static void do_video_stats(AVFormatContext *os, AVOutputStream *ost, 

  657.                            int frame_size)

  658. {

  659.     static FILE *fvstats=NULL;

  660.     static int64_t total_size = 0;

  661.     char filename[40];

  662.     time_t today2;

  663.     struct tm *today;

  664.     AVCodecContext *enc;

  665.     int frame_number;

  666.     int64_t ti;

  667.     double ti1, bitrate, avg_bitrate;

  668.     

  669.     if (!fvstats) {

  670.         today2 = time(NULL);

  671.         today = localtime(&today2);

  672.         sprintf(filename, "vstats_%02d%02d%02d.log", today->tm_hour,

  673.                                                today->tm_min,

  674.                                                today->tm_sec);

  675.         fvstats = fopen(filename,"w");

  676.         if (!fvstats) {

  677.             perror("fopen");

  678.             exit(1);

  679.         }

  680.     }

  681.     

  682.     ti = MAXINT64;

  683.     enc = &ost->st->codec;

  684.     total_size += frame_size;

  685.     if (enc->codec_type == CODEC_TYPE_VIDEO) {

  686.         frame_number = ost->frame_number;

  687.         fprintf(fvstats, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);

  688.         if (enc->flags&CODEC_FLAG_PSNR)

  689.             fprintf(fvstats, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));

  690.         

  691.         fprintf(fvstats,"f_size= %6d ", frame_size);

  692.         /* compute pts value */

  693.         ti1 = (double)ost->st->pts.val * os->pts_num / os->pts_den;

  694.         if (ti1 < 0.01)

  695.             ti1 = 0.01;

  696.     

  697.         bitrate = (double)(frame_size * 8) * enc->frame_rate / enc->frame_rate_base / 1000.0;

  698.         avg_bitrate = (double)(total_size * 8) / ti1 / 1000.0;

  699.         fprintf(fvstats, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",

  700.             (double)total_size / 1024, ti1, bitrate, avg_bitrate);

  701.         fprintf(fvstats,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));        

  702.     }

  703. }

  704. 

  705. static void print_report(AVFormatContext **output_files,

  706. 			 AVOutputStream **ost_table, int nb_ostreams,

  707. 			 int is_last_report)

  708. {

  709.     char buf[1024];

  710.     AVOutputStream *ost;

  711.     AVFormatContext *oc, *os;

  712.     int64_t total_size;

  713.     AVCodecContext *enc;

  714.     int frame_number, vid, i;

  715.     double bitrate, ti1, pts;

  716.     static int64_t last_time = -1;

  717.     

  718.     if (!is_last_report) {

  719.         int64_t cur_time;

  720.         /* display the report every 0.5 seconds */

  721.         cur_time = av_gettime();

  722.         if (last_time == -1) {

  723.             last_time = cur_time;

  724.             return;

  725.         } 

  726.         if ((cur_time - last_time) < 500000)

  727.             return;

  728.         last_time = cur_time;

  729.     }

  730. 

  731. 

  732.     oc = output_files[0];

  733. 

  734.     total_size = url_ftell(&oc->pb);

  735.     

  736.     buf[0] = '\0';

  737.     ti1 = 1e10;

  738.     vid = 0;

  739.     for(i=0;i<nb_ostreams;i++) {

  740.         ost = ost_table[i];

  741.         os = output_files[ost->file_index];

  742.         enc = &ost->st->codec;

  743.         if (vid && enc->codec_type == CODEC_TYPE_VIDEO) {

  744.             sprintf(buf + strlen(buf), "q=%2.1f ",

  745.                     enc->coded_frame->quality/(float)FF_QP2LAMBDA);

  746.         }

  747.         if (!vid && enc->codec_type == CODEC_TYPE_VIDEO) {

  748.             frame_number = ost->frame_number;

  749.             sprintf(buf + strlen(buf), "frame=%5d q=%2.1f ",

  750.                     frame_number, enc->coded_frame ? enc->coded_frame->quality/(float)FF_QP2LAMBDA : 0);

  751.             if (enc->flags&CODEC_FLAG_PSNR)

  752.                 sprintf(buf + strlen(buf), "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));

  753.             vid = 1;

  754.         }

  755.         /* compute min output value */

  756.         pts = (double)ost->st->pts.val * os->pts_num / os->pts_den;

  757.         if ((pts < ti1) && (pts > 0))

  758.             ti1 = pts;

  759.     }

  760.     if (ti1 < 0.01)

  761.         ti1 = 0.01;

  762.     

  763.     if (verbose || is_last_report) {

  764.         bitrate = (double)(total_size * 8) / ti1 / 1000.0;

  765.         

  766.         sprintf(buf + strlen(buf), 

  767.             "size=%8.0fkB time=%0.1f bitrate=%6.1fkbits/s",

  768.             (double)total_size / 1024, ti1, bitrate);

  769.         

  770.         fprintf(stderr, "%s    \r", buf);

  771.         fflush(stderr);

  772.     }

  773.         

  774.     if (is_last_report)

  775.         fprintf(stderr, "\n");

  776. }

  777. 

  778. /*

  779.  * The following code is the main loop of the file converter

  780.  */

  781. static int av_encode(AVFormatContext **output_files,

  782.                      int nb_output_files,

  783.                      AVFormatContext **input_files,

  784.                      int nb_input_files,

  785.                      AVStreamMap *stream_maps, int nb_stream_maps)

  786. {

  787.     int ret, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;

  788.     AVFormatContext *is, *os;

  789.     AVCodecContext *codec, *icodec;

  790.     AVOutputStream *ost, **ost_table = NULL;

  791.     AVInputStream *ist, **ist_table = NULL;

  792.     AVInputFile *file_table;

  793.     AVFormatContext *stream_no_data;

  794.     int key;

  795. 

  796.     file_table= (AVInputFile*) av_mallocz(nb_input_files * sizeof(AVInputFile));

  797.     if (!file_table)

  798.         goto fail;

  799. 

  800.     /* input stream init */

  801.     j = 0;

  802.     for(i=0;i<nb_input_files;i++) {

  803.         is = input_files[i];

  804.         file_table[i].ist_index = j;

  805.         file_table[i].nb_streams = is->nb_streams;

  806.         j += is->nb_streams;

  807.     }

  808.     nb_istreams = j;

  809. 

  810.     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));

  811.     if (!ist_table)

  812.         goto fail;

  813.     

  814.     for(i=0;i<nb_istreams;i++) {

  815.         ist = av_mallocz(sizeof(AVInputStream));

  816.         if (!ist)

  817.             goto fail;

  818.         ist_table[i] = ist;

  819.     }

  820.     j = 0;

  821.     for(i=0;i<nb_input_files;i++) {

  822.         is = input_files[i];

  823.         for(k=0;k<is->nb_streams;k++) {

  824.             ist = ist_table[j++];

  825.             ist->st = is->streams[k];

  826.             ist->file_index = i;

  827.             ist->index = k;

  828.             ist->discard = 1; /* the stream is discarded by default

  829.                                  (changed later) */

  830. 

  831.             if (ist->st->codec.rate_emu) {

  832.                 ist->start = av_gettime();

  833.                 ist->frame = 0;

  834.             }

  835.         }

  836.     }

  837. 

  838.     /* output stream init */

  839.     nb_ostreams = 0;

  840.     for(i=0;i<nb_output_files;i++) {

  841.         os = output_files[i];

  842.         nb_ostreams += os->nb_streams;

  843.     }

  844.     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {

  845.         fprintf(stderr, "Number of stream maps must match number of output streams\n");

  846.         exit(1);

  847.     }

  848. 

  849.     /* Sanity check the mapping args -- do the input files & streams exist? */

  850.     for(i=0;i<nb_stream_maps;i++) {

  851.         int fi = stream_maps[i].file_index;

  852.         int si = stream_maps[i].stream_index;

  853.         

  854.         if (fi < 0 || fi > nb_input_files - 1 ||

  855.             si < 0 || si > file_table[fi].nb_streams - 1) {

  856.             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);

  857.             exit(1);

  858.         }

  859.     }

  860.     

  861.     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);

  862.     if (!ost_table)

  863.         goto fail;

  864.     for(i=0;i<nb_ostreams;i++) {

  865.         ost = av_mallocz(sizeof(AVOutputStream));

  866.         if (!ost)

  867.             goto fail;

  868.         ost_table[i] = ost;

  869.     }

  870.     

  871.     n = 0;

  872.     for(k=0;k<nb_output_files;k++) {

  873.         os = output_files[k];

  874.         for(i=0;i<os->nb_streams;i++) {

  875.             int found;

  876.             ost = ost_table[n++];

  877.             ost->file_index = k;

  878.             ost->index = i;

  879.             ost->st = os->streams[i];

  880.             if (nb_stream_maps > 0) {

  881.                 ost->source_index = file_table[stream_maps[n-1].file_index].ist_index + 

  882.                     stream_maps[n-1].stream_index;

  883.                     

  884.                 /* Sanity check that the stream types match */

  885.                 if (ist_table[ost->source_index]->st->codec.codec_type != ost->st->codec.codec_type) {

  886.                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",

  887.                         stream_maps[n-1].file_index, stream_maps[n-1].stream_index,

  888.                         ost->file_index, ost->index);

  889.                     exit(1);

  890.                 }

  891.                 

  892.             } else {

  893.                 /* get corresponding input stream index : we select the first one with the right type */

  894.                 found = 0;

  895.                 for(j=0;j<nb_istreams;j++) {

  896.                     ist = ist_table[j];

  897.                     if (ist->discard && 

  898.                         ist->st->codec.codec_type == ost->st->codec.codec_type) {

  899.                         ost->source_index = j;

  900.                         found = 1;

  901.                     }

  902.                 }

  903.                 

  904.                 if (!found) {

  905.                     /* try again and reuse existing stream */

  906.                     for(j=0;j<nb_istreams;j++) {

  907.                         ist = ist_table[j];

  908.                         if (ist->st->codec.codec_type == ost->st->codec.codec_type) {

  909.                             ost->source_index = j;

  910.                             found = 1;

  911.                         }

  912.                     }

  913.                     if (!found) {

  914.                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",

  915.                                 ost->file_index, ost->index);

  916.                         exit(1);

  917.                     }

  918.                 }

  919.             }

  920.             ist = ist_table[ost->source_index];

  921.             ist->discard = 0;

  922.         }

  923.     }

  924. 

  925.     /* for each output stream, we compute the right encoding parameters */

  926.     for(i=0;i<nb_ostreams;i++) {

  927.         ost = ost_table[i];

  928.         ist = ist_table[ost->source_index];

  929. 

  930.         codec = &ost->st->codec;

  931.         icodec = &ist->st->codec;

  932. 

  933.         if (ost->st->stream_copy) {

  934.             /* if stream_copy is selected, no need to decode or encode */

  935.             codec->codec_id = icodec->codec_id;

  936.             codec->codec_type = icodec->codec_type;

  937.             codec->codec_tag = icodec->codec_tag;

  938.             codec->bit_rate = icodec->bit_rate;

  939.             switch(codec->codec_type) {

  940.             case CODEC_TYPE_AUDIO:

  941.                 codec->sample_rate = icodec->sample_rate;

  942.                 codec->channels = icodec->channels;

  943.                 break;

  944.             case CODEC_TYPE_VIDEO:

  945.                 codec->frame_rate = icodec->frame_rate;

  946.                 codec->frame_rate_base = icodec->frame_rate_base;

  947.                 codec->width = icodec->width;

  948.                 codec->height = icodec->height;

  949.                 break;

  950.             default:

  951.                 av_abort();

  952.             }

  953.         } else {

  954.             switch(codec->codec_type) {

  955.             case CODEC_TYPE_AUDIO:

  956.                 if (fifo_init(&ost->fifo, 2 * MAX_AUDIO_PACKET_SIZE))

  957.                     goto fail;

  958.                 

  959.                 if (codec->channels == icodec->channels &&

  960.                     codec->sample_rate == icodec->sample_rate) {

  961.                     ost->audio_resample = 0;

  962.                 } else {

  963.                     if (codec->channels != icodec->channels &&

  964.                         icodec->codec_id == CODEC_ID_AC3) {

  965.                         /* Special case for 5:1 AC3 input */

  966.                         /* and mono or stereo output      */

  967.                         /* Request specific number of channels */

  968.                         icodec->channels = codec->channels;

  969.                         if (codec->sample_rate == icodec->sample_rate)

  970.                             ost->audio_resample = 0;

  971.                         else {

  972.                             ost->audio_resample = 1;

  973.                             ost->resample = audio_resample_init(codec->channels, icodec->channels,

  974.                                                         codec->sample_rate, 

  975.                                                         icodec->sample_rate);

  976. 			    if(!ost->resample)

  977. 			      {

  978. 				printf("Can't resample.  Aborting.\n");

  979. 				av_abort();

  980. 			      }

  981.                         }

  982.                         /* Request specific number of channels */

  983.                         icodec->channels = codec->channels;

  984.                     } else {

  985.                         ost->audio_resample = 1; 

  986.                         ost->resample = audio_resample_init(codec->channels, icodec->channels,

  987.                                                         codec->sample_rate, 

  988.                                                         icodec->sample_rate);

  989. 			if(!ost->resample)

  990. 			  {

  991. 			    printf("Can't resample.  Aborting.\n");

  992. 			    av_abort();

  993. 			  }

  994.                     }

  995.                 }

  996.                 ist->decoding_needed = 1;

  997.                 ost->encoding_needed = 1;

  998.                 break;

  999.             case CODEC_TYPE_VIDEO:

  1000.                 if (codec->width == icodec->width &&

  1001.                     codec->height == icodec->height &&

  1002.                     frame_topBand == 0 &&

  1003.                     frame_bottomBand == 0 &&

  1004.                     frame_leftBand == 0 &&

  1005.                     frame_rightBand == 0)

  1006.                 {

  1007.                     ost->video_resample = 0;

  1008.                     ost->video_crop = 0;

  1009.                 } else if ((codec->width == icodec->width -

  1010.                                 (frame_leftBand + frame_rightBand)) &&

  1011.                         (codec->height == icodec->height -

  1012.                                 (frame_topBand  + frame_bottomBand)))

  1013.                 {

  1014.                     ost->video_resample = 0;

  1015.                     ost->video_crop = 1;

  1016.                     ost->topBand = frame_topBand;

  1017.                     ost->leftBand = frame_leftBand;

  1018.                 } else {

  1019.                     uint8_t *buf;

  1020.                     ost->video_resample = 1;

  1021.                     ost->video_crop = 0; // cropping is handled as part of resample

  1022.                     buf = av_malloc((codec->width * codec->height * 3) / 2);

  1023.                     if (!buf)

  1024.                         goto fail;

  1025.                     ost->pict_tmp.data[0] = buf;

  1026.                     ost->pict_tmp.data[1] = ost->pict_tmp.data[0] + (codec->width * codec->height);

  1027.                     ost->pict_tmp.data[2] = ost->pict_tmp.data[1] + (codec->width * codec->height) / 4;

  1028.                     ost->pict_tmp.linesize[0] = codec->width;

  1029.                     ost->pict_tmp.linesize[1] = codec->width / 2;

  1030.                     ost->pict_tmp.linesize[2] = codec->width / 2;

  1031. 

  1032.                     ost->img_resample_ctx = img_resample_full_init( 

  1033.                                       ost->st->codec.width, ost->st->codec.height,

  1034.                                       ist->st->codec.width, ist->st->codec.height,

  1035.                                       frame_topBand, frame_bottomBand,

  1036.                                       frame_leftBand, frame_rightBand);

  1037.                 }

  1038.                 ost->encoding_needed = 1;

  1039.                 ist->decoding_needed = 1;

  1040.                 break;

  1041.             default:

  1042.                 av_abort();

  1043.             }

  1044.             /* two pass mode */

  1045.             if (ost->encoding_needed && 

  1046.                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {

  1047.                 char logfilename[1024];

  1048.                 FILE *f;

  1049.                 int size;

  1050.                 char *logbuffer;

  1051.                 

  1052.                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log", 

  1053.                          pass_logfilename ? 

  1054.                          pass_logfilename : DEFAULT_PASS_LOGFILENAME, i);

  1055.                 if (codec->flags & CODEC_FLAG_PASS1) {

  1056.                     f = fopen(logfilename, "w");

  1057.                     if (!f) {

  1058.                         perror(logfilename);

  1059.                         exit(1);

  1060.                     }

  1061.                     ost->logfile = f;

  1062.                 } else {

  1063.                     /* read the log file */

  1064.                     f = fopen(logfilename, "r");

  1065.                     if (!f) {

  1066.                         perror(logfilename);

  1067.                         exit(1);

  1068.                     }

  1069.                     fseek(f, 0, SEEK_END);

  1070.                     size = ftell(f);

  1071.                     fseek(f, 0, SEEK_SET);

  1072.                     logbuffer = av_malloc(size + 1);

  1073.                     if (!logbuffer) {

  1074.                         fprintf(stderr, "Could not allocate log buffer\n");

  1075.                         exit(1);

  1076.                     }

  1077.                     fread(logbuffer, 1, size, f);

  1078.                     fclose(f);

  1079.                     logbuffer[size] = '\0';

  1080.                     codec->stats_in = logbuffer;

  1081.                 }

  1082.             }

  1083.         }

  1084.     }

  1085. 

  1086.     /* dump the file output parameters - cannot be done before in case

  1087.        of stream copy */

  1088.     for(i=0;i<nb_output_files;i++) {

  1089.         dump_format(output_files[i], i, output_files[i]->filename, 1);

  1090.     }

  1091. 

  1092.     /* dump the stream mapping */

  1093.     fprintf(stderr, "Stream mapping:\n");

  1094.     for(i=0;i<nb_ostreams;i++) {

  1095.         ost = ost_table[i];

  1096.         fprintf(stderr, "  Stream #%d.%d -> #%d.%d\n",

  1097.                 ist_table[ost->source_index]->file_index,

  1098.                 ist_table[ost->source_index]->index,

  1099.                 ost->file_index, 

  1100.                 ost->index);

  1101.     }

  1102. 

  1103.     /* open each encoder */

  1104.     for(i=0;i<nb_ostreams;i++) {

  1105.         ost = ost_table[i];

  1106.         if (ost->encoding_needed) {

  1107.             AVCodec *codec;

  1108.             codec = avcodec_find_encoder(ost->st->codec.codec_id);

  1109.             if (!codec) {

  1110.                 fprintf(stderr, "Unsupported codec for output stream #%d.%d\n", 

  1111.                         ost->file_index, ost->index);

  1112.                 exit(1);

  1113.             }

  1114.             if (avcodec_open(&ost->st->codec, codec) < 0) {

  1115.                 fprintf(stderr, "Error while opening codec for stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height\n", 

  1116.                         ost->file_index, ost->index);

  1117.                 exit(1);

  1118.             }

  1119.         }

  1120.     }

  1121. 

  1122.     /* open each decoder */

  1123.     for(i=0;i<nb_istreams;i++) {

  1124.         ist = ist_table[i];

  1125.         if (ist->decoding_needed) {

  1126.             AVCodec *codec;

  1127.             codec = avcodec_find_decoder(ist->st->codec.codec_id);

  1128.             if (!codec) {

  1129.                 fprintf(stderr, "Unsupported codec (id=%d) for input stream #%d.%d\n", 

  1130.                         ist->st->codec.codec_id, ist->file_index, ist->index);

  1131.                 exit(1);

  1132.             }

  1133.             if (avcodec_open(&ist->st->codec, codec) < 0) {

  1134.                 fprintf(stderr, "Error while opening codec for input stream #%d.%d\n", 

  1135.                         ist->file_index, ist->index);

  1136.                 exit(1);

  1137.             }

  1138.             //if (ist->st->codec.codec_type == CODEC_TYPE_VIDEO)

  1139.             //    ist->st->codec.flags |= CODEC_FLAG_REPEAT_FIELD;

  1140.             ist->frame_decoded = 1;

  1141.         }

  1142.     }

  1143. 

  1144.     /* init pts */

  1145.     for(i=0;i<nb_istreams;i++) {

  1146.         ist = ist_table[i];

  1147. 	is = input_files[ist->file_index];

  1148.         ist->pts = 0;

  1149.         if (ist->decoding_needed) {

  1150.             switch (ist->st->codec.codec_type) {

  1151.             case CODEC_TYPE_AUDIO:

  1152.                 av_frac_init(&ist->next_pts, 

  1153.                              0, 0, (uint64_t)is->pts_num * ist->st->codec.sample_rate);

  1154.                 break;

  1155.             case CODEC_TYPE_VIDEO:

  1156.                 av_frac_init(&ist->next_pts, 

  1157.                              0, 0, (uint64_t)is->pts_num * ist->st->codec.frame_rate);

  1158.                 break;

  1159.             default:

  1160.                 break;

  1161.             }

  1162.         }

  1163.     }

  1164.     

  1165.     /* compute buffer size max (should use a complete heuristic) */

  1166.     for(i=0;i<nb_input_files;i++) {

  1167.         file_table[i].buffer_size_max = 2048;

  1168.     }

  1169. 

  1170.     /* open files and write file headers */

  1171.     for(i=0;i<nb_output_files;i++) {

  1172.         os = output_files[i];

  1173.         if (av_write_header(os) < 0) {

  1174.             fprintf(stderr, "Could not write header for output file #%d (incorrect codec paramters ?)\n", i);

  1175.             ret = -EINVAL;

  1176.             goto fail;

  1177.         }

  1178.     }

  1179. 

  1180. #ifndef CONFIG_WIN32

  1181.     if ( !using_stdin )

  1182.         fprintf(stderr, "Press [q] to stop encoding\n");

  1183. #endif

  1184.     term_init();

  1185. 

  1186.     stream_no_data = 0;

  1187.     key = -1;

  1188. 

  1189.     for(; received_sigterm == 0;) {

  1190.         int file_index, ist_index;

  1191.         AVPacket pkt;

  1192.         uint8_t *ptr;

  1193.         int len;

  1194.         uint8_t *data_buf;

  1195.         int data_size, got_picture;

  1196.         AVPicture picture;

  1197.         short samples[AVCODEC_MAX_AUDIO_FRAME_SIZE / 2];

  1198.         void *buffer_to_free;

  1199.         double pts_min;

  1200.         

  1201.     redo:

  1202.         /* if 'q' pressed, exits */

  1203.         if (!using_stdin) {

  1204.             /* read_key() returns 0 on EOF */

  1205.             key = read_key();

  1206.             if (key == 'q')

  1207.                 break;

  1208.         }

  1209. 

  1210.         /* select the stream that we must read now by looking at the

  1211.            smallest output pts */

  1212.         file_index = -1;

  1213.         pts_min = 1e10;

  1214.         for(i=0;i<nb_ostreams;i++) {

  1215.             double pts;

  1216.             ost = ost_table[i];

  1217.             os = output_files[ost->file_index];

  1218.             ist = ist_table[ost->source_index];

  1219.             pts = (double)ost->st->pts.val * os->pts_num / os->pts_den;

  1220.             if (!file_table[ist->file_index].eof_reached && 

  1221.                 pts < pts_min) {

  1222.                 pts_min = pts;

  1223.                 file_index = ist->file_index;

  1224.             }

  1225.         }

  1226.         /* if none, if is finished */

  1227.         if (file_index < 0) {

  1228.             break;

  1229.         }

  1230. 

  1231.         /* finish if recording time exhausted */

  1232.         if (recording_time > 0 && pts_min >= (recording_time / 1000000.0))

  1233.             break;

  1234. 

  1235.         /* read a packet from it and output it in the fifo */

  1236.         is = input_files[file_index];

  1237.         if (av_read_packet(is, &pkt) < 0) {

  1238.             file_table[file_index].eof_reached = 1;

  1239.             continue;

  1240.         }

  1241.         if (!pkt.size) {

  1242.             stream_no_data = is;

  1243.         } else {

  1244.             stream_no_data = 0;

  1245.         }

  1246.         if (do_hex_dump) {

  1247.             printf("stream #%d, size=%d:\n", pkt.stream_index, pkt.size);

  1248.             av_hex_dump(pkt.data, pkt.size);

  1249.         }

  1250.         /* the following test is needed in case new streams appear

  1251.            dynamically in stream : we ignore them */

  1252.         if (pkt.stream_index >= file_table[file_index].nb_streams)

  1253.             goto discard_packet;

  1254.         ist_index = file_table[file_index].ist_index + pkt.stream_index;

  1255.         ist = ist_table[ist_index];

  1256.         if (ist->discard)

  1257.             goto discard_packet;

  1258. 

  1259.         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);

  1260. 

  1261.         len = pkt.size;

  1262.         ptr = pkt.data;

  1263.         while (len > 0) {

  1264. 	    int ipts;

  1265. 	    /* decode the packet if needed */

  1266.             data_buf = NULL; /* fail safe */

  1267.             data_size = 0;

  1268.             if (ist->decoding_needed) {

  1269.                 /* NOTE1: we only take into account the PTS if a new

  1270.                    frame has begun (MPEG semantics) */

  1271.                 /* NOTE2: even if the fraction is not initialized,

  1272.                    av_frac_set can be used to set the integer part */

  1273.                 if (ist->frame_decoded) { 

  1274.                     /* If pts is unavailable -- we have to use synthetic one */

  1275.                     if( pkt.pts != AV_NOPTS_VALUE )

  1276.                     {

  1277.                         ist->pts = ist->next_pts.val = pkt.pts;

  1278.                     }

  1279.                     else

  1280.                     {

  1281.                         ist->pts = ist->next_pts.val;

  1282.                     }

  1283.                     ist->frame_decoded = 0;

  1284.                 }

  1285. 

  1286.                 switch(ist->st->codec.codec_type) {

  1287.                 case CODEC_TYPE_AUDIO:

  1288.                     /* XXX: could avoid copy if PCM 16 bits with same

  1289.                        endianness as CPU */

  1290.                     ret = avcodec_decode_audio(&ist->st->codec, samples, &data_size,

  1291.                                                ptr, len);

  1292.                     if (ret < 0)

  1293.                         goto fail_decode;

  1294.                     /* Some bug in mpeg audio decoder gives */

  1295.                     /* data_size < 0, it seems they are overflows */

  1296.                     if (data_size <= 0) {

  1297.                         /* no audio frame */

  1298.                         ptr += ret;

  1299.                         len -= ret;

  1300.                         continue;

  1301.                     }

  1302.                     data_buf = (uint8_t *)samples;

  1303. 		    av_frac_add(&ist->next_pts, 

  1304. 			        (uint64_t)is->pts_den * data_size / (2 * ist->st->codec.channels));

  1305.                     break;

  1306.                 case CODEC_TYPE_VIDEO:

  1307.                     {

  1308.                         AVFrame big_picture;

  1309. 

  1310.                         data_size = (ist->st->codec.width * ist->st->codec.height * 3) / 2;

  1311.                         ret = avcodec_decode_video(&ist->st->codec, 

  1312.                                                    &big_picture, &got_picture, ptr, len);

  1313.                         picture= *(AVPicture*)&big_picture;

  1314.                         ist->st->quality= big_picture.quality;

  1315.                         if (ret < 0) {

  1316.                         fail_decode:

  1317.                             fprintf(stderr, "Error while decoding stream #%d.%d\n",

  1318.                                     ist->file_index, ist->index);

  1319.                             av_free_packet(&pkt);

  1320.                             goto redo;

  1321.                         }

  1322.                         if (!got_picture) {

  1323.                             /* no picture yet */

  1324.                             ptr += ret;

  1325.                             len -= ret;

  1326.                             continue;

  1327.                         }

  1328.                         av_frac_add(&ist->next_pts, 

  1329. 			            (uint64_t)is->pts_den * ist->st->codec.frame_rate_base);          

  1330.                     }

  1331.                     break;

  1332.                 default:

  1333.                     goto fail_decode;

  1334.                 }

  1335.             } else {

  1336.                 data_buf = ptr;

  1337.                 data_size = len;

  1338.                 ret = len;

  1339.             }

  1340.             ptr += ret;

  1341.             len -= ret;

  1342. 

  1343.             buffer_to_free = 0;

  1344.             if (ist->st->codec.codec_type == CODEC_TYPE_VIDEO) {

  1345.                 pre_process_video_frame(ist, &picture, &buffer_to_free);

  1346.             }

  1347. 

  1348.             ist->frame_decoded = 1;

  1349. 

  1350.             /* frame rate emulation */

  1351.             if (ist->st->codec.rate_emu) {

  1352.                 int64_t pts = av_rescale((int64_t) ist->frame * ist->st->codec.frame_rate_base, 1000000, ist->st->codec.frame_rate);

  1353.                 int64_t now = av_gettime() - ist->start;

  1354.                 if (pts > now)

  1355.                     usleep(pts - now);

  1356. 

  1357.                 ist->frame++;

  1358.             }

  1359. 

  1360. #if 0

  1361.             /* mpeg PTS deordering : if it is a P or I frame, the PTS

  1362.                is the one of the next displayed one */

  1363.             /* XXX: add mpeg4 too ? */

  1364.             if (ist->st->codec.codec_id == CODEC_ID_MPEG1VIDEO) {

  1365.                 if (ist->st->codec.pict_type != B_TYPE) {

  1366.                     int64_t tmp;

  1367.                     tmp = ist->last_ip_pts;

  1368.                     ist->last_ip_pts  = ist->frac_pts.val;

  1369.                     ist->frac_pts.val = tmp;

  1370.                 }

  1371.             }

  1372. #endif

  1373. 	    ipts = (double)ist->pts * is->pts_num / is->pts_den;

  1374.         //fprintf(stderr,"decoded ipts=%ld %d\n",ipts,ist->pts);

  1375. 

  1376. 	    /* if output time reached then transcode raw format, 

  1377. 	       encode packets and output them */

  1378. 	    if (start_time == 0 || ipts > (start_time / 1000000.0))

  1379.             for(i=0;i<nb_ostreams;i++) {

  1380.                 int frame_size;

  1381. 

  1382.                 ost = ost_table[i];

  1383.                 if (ost->source_index == ist_index) {

  1384.                     os = output_files[ost->file_index];

  1385. 

  1386. #if 0

  1387.                     printf("%d: got pts=%f %f\n", i, pkt.pts / 90000.0, 

  1388.                            (ist->pts - ost->st->pts.val) / 90000.0);

  1389. #endif

  1390.                     /* set the input output pts pairs */

  1391.                     ost->sync_ipts = (double)ist->pts * is->pts_num / 

  1392.                         is->pts_den;

  1393.                     /* XXX: take into account the various fifos,

  1394.                        in particular for audio */

  1395.                     ost->sync_opts = ost->st->pts.val;

  1396.                     //printf("ipts=%lld sync_ipts=%f sync_opts=%lld pts.val=%lld pkt.pts=%lld\n", ist->pts, ost->sync_ipts, ost->sync_opts, ost->st->pts.val, pkt.pts); 

  1397. 

  1398.                     if (ost->encoding_needed) {

  1399.                         switch(ost->st->codec.codec_type) {

  1400.                         case CODEC_TYPE_AUDIO:

  1401.                             do_audio_out(os, ost, ist, data_buf, data_size);

  1402.                             break;

  1403.                         case CODEC_TYPE_VIDEO:

  1404.                             /* find an audio stream for synchro */

  1405.                             {

  1406.                                 int i;

  1407.                                 AVOutputStream *audio_sync, *ost1;

  1408.                                 audio_sync = NULL;

  1409.                                 for(i=0;i<nb_ostreams;i++) {

  1410.                                     ost1 = ost_table[i];

  1411.                                     if (ost1->file_index == ost->file_index &&

  1412.                                         ost1->st->codec.codec_type == CODEC_TYPE_AUDIO) {

  1413.                                         audio_sync = ost1;

  1414.                                         break;

  1415.                                     }

  1416.                                 }

  1417. 

  1418.                                 do_video_out(os, ost, ist, &picture, &frame_size, audio_sync);

  1419.                                 if (do_vstats && frame_size)

  1420.                                     do_video_stats(os, ost, frame_size);

  1421.                             }

  1422.                             break;

  1423.                         default:

  1424.                             av_abort();

  1425.                         }

  1426.                     } else {

  1427.                         AVFrame avframe;

  1428.                                                 

  1429.                         /* no reencoding needed : output the packet directly */

  1430.                         /* force the input stream PTS */

  1431.                         

  1432.                         memset(&avframe, 0, sizeof(AVFrame));

  1433.                         ost->st->codec.coded_frame= &avframe;

  1434. 			avframe.key_frame = pkt.flags & PKT_FLAG_KEY; 

  1435.                         

  1436.                         av_write_frame(os, ost->index, data_buf, data_size);

  1437. 			ost->st->codec.frame_number++;

  1438. 			ost->frame_number++;

  1439.                     }

  1440.                 }

  1441.             }

  1442.             av_free(buffer_to_free);

  1443.         }

  1444.     discard_packet:

  1445.         av_free_packet(&pkt);

  1446.         

  1447.         /* dump report by using the output first video and audio streams */

  1448.         print_report(output_files, ost_table, nb_ostreams, 0);

  1449.     }

  1450.     term_exit();

  1451. 

  1452.     /* dump report by using the first video and audio streams */

  1453.     print_report(output_files, ost_table, nb_ostreams, 1);

  1454. 

  1455.     /* close each encoder */

  1456.     for(i=0;i<nb_ostreams;i++) {

  1457.         ost = ost_table[i];

  1458.         if (ost->encoding_needed) {

  1459.             av_freep(&ost->st->codec.stats_in);

  1460.             avcodec_close(&ost->st->codec);

  1461.         }

  1462.     }

  1463.     

  1464.     /* close each decoder */

  1465.     for(i=0;i<nb_istreams;i++) {

  1466.         ist = ist_table[i];

  1467.         if (ist->decoding_needed) {

  1468.             avcodec_close(&ist->st->codec);

  1469.         }

  1470.     }

  1471.     

  1472. 

  1473.     /* write the trailer if needed and close file */

  1474.     for(i=0;i<nb_output_files;i++) {

  1475.         os = output_files[i];

  1476.         av_write_trailer(os);

  1477.     }

  1478.     /* finished ! */

  1479.     

  1480.     ret = 0;

  1481.  fail1:

  1482.     av_free(file_table);

  1483. 

  1484.     if (ist_table) {

  1485.         for(i=0;i<nb_istreams;i++) {

  1486.             ist = ist_table[i];

  1487.             av_free(ist);

  1488.         }

  1489.         av_free(ist_table);

  1490.     }

  1491.     if (ost_table) {

  1492.         for(i=0;i<nb_ostreams;i++) {

  1493.             ost = ost_table[i];

  1494.             if (ost) {

  1495.                 if (ost->logfile) {

  1496.                     fclose(ost->logfile);

  1497.                     ost->logfile = NULL;

  1498.                 }

  1499.                 fifo_free(&ost->fifo); /* works even if fifo is not

  1500.                                           initialized but set to zero */

  1501.                 av_free(ost->pict_tmp.data[0]);

  1502.                 if (ost->video_resample)

  1503.                     img_resample_close(ost->img_resample_ctx);

  1504.                 if (ost->audio_resample)

  1505.                     audio_resample_close(ost->resample);

  1506.                 av_free(ost);

  1507.             }

  1508.         }

  1509.         av_free(ost_table);

  1510.     }

  1511.     return ret;

  1512.  fail:

  1513.     ret = -ENOMEM;

  1514.     goto fail1;

  1515. }

  1516. 

  1517. #if 0

  1518. int file_read(const char *filename)

  1519. {

  1520.     URLContext *h;

  1521.     unsigned char buffer[1024];

  1522.     int len, i;

  1523. 

  1524.     if (url_open(&h, filename, O_RDONLY) < 0) {

  1525.         printf("could not open '%s'\n", filename);

  1526.         return -1;

  1527.     }

  1528.     for(;;) {

  1529.         len = url_read(h, buffer, sizeof(buffer));

  1530.         if (len <= 0)

  1531.             break;

  1532.         for(i=0;i<len;i++) putchar(buffer[i]);

  1533.     }

  1534.     url_close(h);

  1535.     return 0;

  1536. }

  1537. #endif

  1538. 

  1539. static void opt_image_format(const char *arg)

  1540. {

  1541.     AVImageFormat *f;

  1542.     

  1543.     for(f = first_image_format; f != NULL; f = f->next) {

  1544.         if (!strcmp(arg, f->name))

  1545.             break;

  1546.     }

  1547.     if (!f) {

  1548.         fprintf(stderr, "Unknown image format: '%s'\n", arg);

  1549.         exit(1);

  1550.     }

  1551.     image_format = f;

  1552. }

  1553. 

  1554. static void opt_format(const char *arg)

  1555. {

  1556.     /* compatibility stuff for pgmyuv */

  1557.     if (!strcmp(arg, "pgmyuv")) {

  1558.         opt_image_format(arg);

  1559.         arg = "image";

  1560.     }

  1561. 

  1562.     file_iformat = av_find_input_format(arg);

  1563.     file_oformat = guess_format(arg, NULL, NULL);

  1564.     if (!file_iformat && !file_oformat) {

  1565.         fprintf(stderr, "Unknown input or output format: %s\n", arg);

  1566.         exit(1);

  1567.     }

  1568. }

  1569. 

  1570. static void opt_video_bitrate(const char *arg)

  1571. {

  1572.     video_bit_rate = atoi(arg) * 1000;

  1573. }

  1574. 

  1575. static void opt_video_bitrate_tolerance(const char *arg)

  1576. {

  1577.     video_bit_rate_tolerance = atoi(arg) * 1000;

  1578. }

  1579. 

  1580. static void opt_video_bitrate_max(const char *arg)

  1581. {

  1582.     video_rc_max_rate = atoi(arg) * 1000;

  1583. }

  1584. 

  1585. static void opt_video_bitrate_min(const char *arg)

  1586. {

  1587.     video_rc_min_rate = atoi(arg) * 1000;

  1588. }

  1589. 

  1590. static void opt_video_buffer_size(const char *arg)

  1591. {

  1592.     video_rc_buffer_size = atoi(arg) * 1000;

  1593. }

  1594. 

  1595. static void opt_video_rc_eq(char *arg)

  1596. {

  1597.     video_rc_eq = arg;

  1598. }

  1599. 

  1600. static void opt_video_rc_override_string(char *arg)

  1601. {

  1602.     video_rc_override_string = arg;

  1603. }

  1604. 

  1605. 

  1606. static void opt_workaround_bugs(const char *arg)

  1607. {

  1608.     workaround_bugs = atoi(arg);

  1609. }

  1610. 

  1611. static void opt_dct_algo(const char *arg)

  1612. {

  1613.     dct_algo = atoi(arg);

  1614. }

  1615. 

  1616. static void opt_idct_algo(const char *arg)

  1617. {

  1618.     idct_algo = atoi(arg);

  1619. }

  1620. 

  1621. 

  1622. static void opt_error_resilience(const char *arg)

  1623. {

  1624.     error_resilience = atoi(arg);

  1625. }

  1626. 

  1627. static void opt_error_concealment(const char *arg)

  1628. {

  1629.     error_concealment = atoi(arg);

  1630. }

  1631. 

  1632. static void opt_debug(const char *arg)

  1633. {

  1634.     debug = atoi(arg);

  1635. }

  1636. 

  1637. static void opt_verbose(const char *arg)

  1638. {

  1639.     verbose = atoi(arg);

  1640. }

  1641. 

  1642. static void opt_frame_rate(const char *arg)

  1643. {

  1644.     if (parse_frame_rate(&frame_rate, &frame_rate_base, arg) < 0) {

  1645.         fprintf(stderr, "Incorrect frame rate\n");

  1646. 	exit(1);

  1647.     }

  1648. }

  1649. 

  1650. static void opt_frame_crop_top(const char *arg)

  1651. {

  1652.     frame_topBand = atoi(arg); 

  1653.     if (frame_topBand < 0) {

  1654.         fprintf(stderr, "Incorrect top crop size\n");

  1655.         exit(1);

  1656.     }

  1657.     if ((frame_topBand % 2) != 0) {

  1658.         fprintf(stderr, "Top crop size must be a multiple of 2\n");

  1659.         exit(1);

  1660.     }

  1661.     if ((frame_topBand) >= frame_height){

  1662.     	fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");

  1663.         exit(1);

  1664.     }

  1665.     frame_height -= frame_topBand;

  1666. }

  1667. 

  1668. static void opt_frame_crop_bottom(const char *arg)

  1669. {

  1670.     frame_bottomBand = atoi(arg);

  1671.     if (frame_bottomBand < 0) {

  1672.         fprintf(stderr, "Incorrect bottom crop size\n");

  1673.         exit(1);

  1674.     }

  1675.     if ((frame_bottomBand % 2) != 0) {

  1676.         fprintf(stderr, "Bottom crop size must be a multiple of 2\n");

  1677.         exit(1);        

  1678.     }

  1679.     if ((frame_bottomBand) >= frame_height){

  1680.     	fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");

  1681.         exit(1);

  1682.     }

  1683.     frame_height -= frame_bottomBand;

  1684. }

  1685. 

  1686. static void opt_frame_crop_left(const char *arg)

  1687. {

  1688.     frame_leftBand = atoi(arg);

  1689.     if (frame_leftBand < 0) {

  1690.         fprintf(stderr, "Incorrect left crop size\n");

  1691.         exit(1);

  1692.     }

  1693.     if ((frame_leftBand % 2) != 0) {

  1694.         fprintf(stderr, "Left crop size must be a multiple of 2\n");

  1695.         exit(1);

  1696.     }

  1697.     if ((frame_leftBand) >= frame_width){

  1698.     	fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");

  1699.         exit(1);

  1700.     }

  1701.     frame_width -= frame_leftBand;

  1702. }

  1703. 

  1704. static void opt_frame_crop_right(const char *arg)

  1705. {

  1706.     frame_rightBand = atoi(arg);

  1707.     if (frame_rightBand < 0) {

  1708.         fprintf(stderr, "Incorrect right crop size\n");

  1709.         exit(1);

  1710.     }

  1711.     if ((frame_rightBand % 2) != 0) {

  1712.         fprintf(stderr, "Right crop size must be a multiple of 2\n");

  1713.         exit(1);        

  1714.     }

  1715.     if ((frame_rightBand) >= frame_width){

  1716.     	fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");

  1717.         exit(1);

  1718.     }

  1719.     frame_width -= frame_rightBand;

  1720. }

  1721. 

  1722. static void opt_frame_size(const char *arg)

  1723. {

  1724.     if (parse_image_size(&frame_width, &frame_height, arg) < 0) {

  1725.         fprintf(stderr, "Incorrect frame size\n");

  1726.         exit(1);

  1727.     }

  1728.     if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {

  1729.         fprintf(stderr, "Frame size must be a multiple of 2\n");

  1730.         exit(1);

  1731.     }

  1732. }

  1733. 

  1734. static void opt_frame_pix_fmt(const char *arg)

  1735. {

  1736.     frame_pix_fmt = avcodec_get_pix_fmt(arg);

  1737. }

  1738. 

  1739. static void opt_frame_aspect_ratio(const char *arg)

  1740. {

  1741.     int x = 0, y = 0;

  1742.     double ar = 0;

  1743.     const char *p;

  1744.     

  1745.     p = strchr(arg, ':');

  1746.     if (p) {

  1747.         x = strtol(arg, (char **)&arg, 10);

  1748. 	if (arg == p)

  1749. 	    y = strtol(arg+1, (char **)&arg, 10);

  1750. 	if (x > 0 && y > 0)

  1751. 	    ar = (double)x / (double)y;

  1752.     } else

  1753.         ar = strtod(arg, (char **)&arg);

  1754. 

  1755.     if (!ar) {

  1756.         fprintf(stderr, "Incorrect aspect ratio specification.\n");

  1757. 	exit(1);

  1758.     }

  1759.     frame_aspect_ratio = ar;

  1760. }

  1761. 

  1762. static void opt_gop_size(const char *arg)

  1763. {

  1764.     gop_size = atoi(arg);

  1765. }

  1766. 

  1767. static void opt_b_frames(const char *arg)

  1768. {

  1769.     b_frames = atoi(arg);

  1770.     if (b_frames > FF_MAX_B_FRAMES) {

  1771.         fprintf(stderr, "\nCannot have more than %d B frames, increase FF_MAX_B_FRAMES.\n", FF_MAX_B_FRAMES);

  1772.         exit(1);

  1773.     } else if (b_frames < 1) {

  1774.         fprintf(stderr, "\nNumber of B frames must be higher than 0\n");

  1775.         exit(1);

  1776.     }

  1777. }

  1778. 

  1779. static void opt_mb_decision(const char *arg)

  1780. {

  1781.     mb_decision = atoi(arg);

  1782. }

  1783. 

  1784. static void opt_qscale(const char *arg)

  1785. {

  1786.     video_qscale = atof(arg);

  1787.     if (video_qscale < 0.01 ||

  1788.         video_qscale > 255) {

  1789.         fprintf(stderr, "qscale must be >= 0.01 and <= 255\n");

  1790.         exit(1);

  1791.     }

  1792. }

  1793. 

  1794. static void opt_qmin(const char *arg)

  1795. {

  1796.     video_qmin = atoi(arg);

  1797.     if (video_qmin < 0 ||

  1798.         video_qmin > 31) {

  1799.         fprintf(stderr, "qmin must be >= 1 and <= 31\n");

  1800.         exit(1);

  1801.     }

  1802. }

  1803. 

  1804. static void opt_qmax(const char *arg)

  1805. {

  1806.     video_qmax = atoi(arg);

  1807.     if (video_qmax < 0 ||

  1808.         video_qmax > 31) {

  1809.         fprintf(stderr, "qmax must be >= 1 and <= 31\n");

  1810.         exit(1);

  1811.     }

  1812. }

  1813. 

  1814. static void opt_mb_qmin(const char *arg)

  1815. {

  1816.     video_mb_qmin = atoi(arg);

  1817.     if (video_mb_qmin < 0 ||

  1818.         video_mb_qmin > 31) {

  1819.         fprintf(stderr, "qmin must be >= 1 and <= 31\n");

  1820.         exit(1);

  1821.     }

  1822. }

  1823. 

  1824. static void opt_mb_qmax(const char *arg)

  1825. {

  1826.     video_mb_qmax = atoi(arg);

  1827.     if (video_mb_qmax < 0 ||

  1828.         video_mb_qmax > 31) {

  1829.         fprintf(stderr, "qmax must be >= 1 and <= 31\n");

  1830.         exit(1);

  1831.     }

  1832. }

  1833. 

  1834. static void opt_qdiff(const char *arg)

  1835. {

  1836.     video_qdiff = atoi(arg);

  1837.     if (video_qdiff < 0 ||

  1838.         video_qdiff > 31) {

  1839.         fprintf(stderr, "qdiff must be >= 1 and <= 31\n");

  1840.         exit(1);

  1841.     }

  1842. }

  1843. 

  1844. static void opt_qblur(const char *arg)

  1845. {

  1846.     video_qblur = atof(arg);

  1847. }

  1848. 

  1849. static void opt_qcomp(const char *arg)

  1850. {

  1851.     video_qcomp = atof(arg);

  1852. }

  1853. 

  1854. static void opt_rc_initial_cplx(const char *arg)

  1855. {

  1856.     video_rc_initial_cplx = atof(arg);

  1857. }

  1858. static void opt_b_qfactor(const char *arg)

  1859. {

  1860.     video_b_qfactor = atof(arg);

  1861. }

  1862. static void opt_i_qfactor(const char *arg)

  1863. {

  1864.     video_i_qfactor = atof(arg);

  1865. }

  1866. static void opt_b_qoffset(const char *arg)

  1867. {

  1868.     video_b_qoffset = atof(arg);

  1869. }

  1870. static void opt_i_qoffset(const char *arg)

  1871. {

  1872.     video_i_qoffset = atof(arg);

  1873. }

  1874. 

  1875. static void opt_packet_size(const char *arg)

  1876. {

  1877.     packet_size= atoi(arg);

  1878. }

  1879. 

  1880. static void opt_strict(const char *arg)

  1881. {

  1882.     strict= atoi(arg);

  1883. }

  1884. 

  1885. static void opt_audio_bitrate(const char *arg)

  1886. {

  1887.     audio_bit_rate = atoi(arg) * 1000;

  1888. }

  1889. 

  1890. static void opt_audio_rate(const char *arg)

  1891. {

  1892.     audio_sample_rate = atoi(arg);

  1893. }

  1894. 

  1895. static void opt_audio_channels(const char *arg)

  1896. {

  1897.     audio_channels = atoi(arg);

  1898. }

  1899. 

  1900. static void opt_video_device(const char *arg)

  1901. {

  1902.     video_device = av_strdup(arg);

  1903. }

  1904. 

  1905. static void opt_video_channel(const char *arg)

  1906. {

  1907.     video_channel = strtol(arg, NULL, 0);

  1908. }

  1909. 

  1910. static void opt_video_standard(const char *arg)

  1911. {

  1912.     video_standard = av_strdup(arg);

  1913. }

  1914. 

  1915. static void opt_audio_device(const char *arg)

  1916. {

  1917.     audio_device = av_strdup(arg);

  1918. }

  1919. 

  1920. static void opt_dv1394(const char *arg)

  1921. {

  1922.     video_grab_format = "dv1394";

  1923.     audio_grab_format = NULL;

  1924. }

  1925. 

  1926. static void opt_audio_codec(const char *arg)

  1927. {

  1928.     AVCodec *p;

  1929. 

  1930.     if (!strcmp(arg, "copy")) {

  1931.         audio_stream_copy = 1;

  1932.     } else {

  1933.         p = first_avcodec;

  1934.         while (p) {

  1935.             if (!strcmp(p->name, arg) && p->type == CODEC_TYPE_AUDIO)

  1936.                 break;

  1937.             p = p->next;

  1938.         }

  1939.         if (p == NULL) {

  1940.             fprintf(stderr, "Unknown audio codec '%s'\n", arg);

  1941.             exit(1);

  1942.         } else {

  1943.             audio_codec_id = p->id;

  1944.         }

  1945.     }

  1946. }

  1947. 

  1948. static void add_frame_hooker(const char *arg)

  1949. {

  1950.     int argc = 0;

  1951.     char *argv[64];

  1952.     int i;

  1953.     char *args = av_strdup(arg);

  1954. 

  1955.     using_vhook = 1;

  1956. 

  1957.     argv[0] = strtok(args, " ");

  1958.     while (argc < 62 && (argv[++argc] = strtok(NULL, " "))) {

  1959.     }

  1960. 

  1961.     i = frame_hook_add(argc, argv);

  1962. 

  1963.     if (i != 0) {

  1964.         fprintf(stderr, "Failed to add video hook function: %s\n", arg);

  1965.         exit(1);

  1966.     }

  1967. }

  1968. 

  1969. const char *motion_str[] = {

  1970.     "zero",

  1971.     "full",

  1972.     "log",

  1973.     "phods",

  1974.     "epzs",

  1975.     "x1",

  1976.     NULL,

  1977. };

  1978. 

  1979. static void opt_motion_estimation(const char *arg)

  1980. {

  1981.     const char **p;

  1982.     p = motion_str;

  1983.     for(;;) {

  1984.         if (!*p) {

  1985.             fprintf(stderr, "Unknown motion estimation method '%s'\n", arg);

  1986.             exit(1);

  1987.         }

  1988.         if (!strcmp(*p, arg))

  1989.             break;

  1990.         p++;

  1991.     }

  1992.     me_method = (p - motion_str) + 1;

  1993. }

  1994. 

  1995. static void opt_video_codec(const char *arg)

  1996. {

  1997.     AVCodec *p;

  1998. 

  1999.     if (!strcmp(arg, "copy")) {

  2000.         video_stream_copy = 1;

  2001.     } else {

  2002.         p = first_avcodec;

  2003.         while (p) {

  2004.             if (!strcmp(p->name, arg) && p->type == CODEC_TYPE_VIDEO)

  2005.                 break;

  2006.             p = p->next;

  2007.         }

  2008.         if (p == NULL) {

  2009.             fprintf(stderr, "Unknown video codec '%s'\n", arg);

  2010.             exit(1);

  2011.         } else {

  2012.             video_codec_id = p->id;

  2013.         }

  2014.     }

  2015. }

  2016. 

  2017. static void opt_map(const char *arg)

  2018. {

  2019.     AVStreamMap *m;

  2020.     const char *p;

  2021. 

  2022.     p = arg;

  2023.     m = &stream_maps[nb_stream_maps++];

  2024. 

  2025.     m->file_index = strtol(arg, (char **)&p, 0);

  2026.     if (*p)

  2027.         p++;

  2028. 

  2029.     m->stream_index = strtol(p, (char **)&p, 0);

  2030. }

  2031. 

  2032. static void opt_recording_time(const char *arg)

  2033. {

  2034.     recording_time = parse_date(arg, 1);

  2035. }

  2036. 

  2037. static void opt_start_time(const char *arg)

  2038. {

  2039.     start_time = parse_date(arg, 1);

  2040. }

  2041. 

  2042. static void opt_input_file(const char *filename)

  2043. {

  2044.     AVFormatContext *ic;

  2045.     AVFormatParameters params, *ap = &params;

  2046.     int err, i, ret, rfps, rfps_base;

  2047. 

  2048.     if (!strcmp(filename, "-"))

  2049.         filename = "pipe:";

  2050. 

  2051.     using_stdin |= !strcmp(filename, "pipe:" ) || 

  2052.                    !strcmp( filename, "/dev/stdin" );

  2053. 

  2054.     /* get default parameters from command line */

  2055.     memset(ap, 0, sizeof(*ap));

  2056.     ap->sample_rate = audio_sample_rate;

  2057.     ap->channels = audio_channels;

  2058.     ap->frame_rate = frame_rate;

  2059.     ap->frame_rate_base = frame_rate_base;

  2060.     ap->width = frame_width;

  2061.     ap->height = frame_height;

  2062.     ap->image_format = image_format;

  2063.     ap->pix_fmt = frame_pix_fmt;

  2064. 

  2065.     /* open the input file with generic libav function */

  2066.     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);

  2067.     if (err < 0) {

  2068.         print_error(filename, err);

  2069.         exit(1);

  2070.     }

  2071.     

  2072.     /* If not enough info to get the stream parameters, we decode the

  2073.        first frames to get it. (used in mpeg case for example) */

  2074.     ret = av_find_stream_info(ic);

  2075.     if (ret < 0) {

  2076.         fprintf(stderr, "%s: could not find codec parameters\n", filename);

  2077.         exit(1);

  2078.     }

  2079. 

  2080.     /* update the current parameters so that they match the one of the input stream */

  2081.     for(i=0;i<ic->nb_streams;i++) {

  2082.         AVCodecContext *enc = &ic->streams[i]->codec;

  2083.         switch(enc->codec_type) {

  2084.         case CODEC_TYPE_AUDIO:

  2085.             //fprintf(stderr, "\nInput Audio channels: %d", enc->channels);

  2086.             audio_channels = enc->channels;

  2087.             audio_sample_rate = enc->sample_rate;

  2088.             break;

  2089.         case CODEC_TYPE_VIDEO:

  2090.             frame_height = enc->height;

  2091.             frame_width = enc->width;

  2092. 	    frame_aspect_ratio = av_q2d(enc->sample_aspect_ratio) * enc->width / enc->height;

  2093. 	    frame_pix_fmt = enc->pix_fmt;

  2094.             rfps      = ic->streams[i]->r_frame_rate;

  2095.             rfps_base = ic->streams[i]->r_frame_rate_base;

  2096.             enc->workaround_bugs = workaround_bugs;

  2097.             enc->error_resilience = error_resilience; 

  2098.             enc->error_concealment = error_concealment; 

  2099.             enc->idct_algo= idct_algo;

  2100.             enc->debug= debug;

  2101. /*            if(enc->codec->capabilities & CODEC_CAP_TRUNCATED)

  2102.                 enc->flags|= CODEC_FLAG_TRUNCATED; */

  2103.             if(/*enc->codec_id==CODEC_ID_MPEG4 || */enc->codec_id==CODEC_ID_MPEG1VIDEO || enc->codec_id==CODEC_ID_H264)

  2104.                 enc->flags|= CODEC_FLAG_TRUNCATED;

  2105.             

  2106.             if(bitexact)

  2107.                 enc->flags|= CODEC_FLAG_BITEXACT;

  2108. 

  2109.             assert(enc->frame_rate_base == rfps_base); // should be true for now

  2110.             if (enc->frame_rate != rfps) { 

  2111.                 fprintf(stderr,"\nSeems that stream %d comes from film source: %2.2f->%2.2f\n",

  2112.                     i, (float)enc->frame_rate / enc->frame_rate_base,

  2113.                     (float)rfps / rfps_base);

  2114.             }

  2115.             /* update the current frame rate to match the stream frame rate */

  2116.             frame_rate      = rfps;

  2117.             frame_rate_base = rfps_base;

  2118. 

  2119.             enc->rate_emu = rate_emu;

  2120.             break;

  2121.         default:

  2122.             av_abort();

  2123.         }

  2124.     }

  2125.     

  2126.     input_files[nb_input_files] = ic;

  2127.     /* dump the file content */

  2128.     dump_format(ic, nb_input_files, filename, 0);

  2129.     nb_input_files++;

  2130.     file_iformat = NULL;

  2131.     file_oformat = NULL;

  2132.     image_format = NULL;

  2133. 

  2134.     rate_emu = 0;

  2135. }

  2136. 

  2137. static void check_audio_video_inputs(int *has_video_ptr, int *has_audio_ptr)

  2138. {

  2139.     int has_video, has_audio, i, j;

  2140.     AVFormatContext *ic;

  2141. 

  2142.     has_video = 0;

  2143.     has_audio = 0;

  2144.     for(j=0;j<nb_input_files;j++) {

  2145.         ic = input_files[j];

  2146.         for(i=0;i<ic->nb_streams;i++) {

  2147.             AVCodecContext *enc = &ic->streams[i]->codec;

  2148.             switch(enc->codec_type) {

  2149.             case CODEC_TYPE_AUDIO:

  2150.                 has_audio = 1;

  2151.                 break;

  2152.             case CODEC_TYPE_VIDEO:

  2153.                 has_video = 1;

  2154.                 break;

  2155.             default:

  2156.                 av_abort();

  2157.             }

  2158.         }

  2159.     }

  2160.     *has_video_ptr = has_video;

  2161.     *has_audio_ptr = has_audio;

  2162. }

  2163. 

  2164. static void opt_output_file(const char *filename)

  2165. {

  2166.     AVStream *st;

  2167.     AVFormatContext *oc;

  2168.     int use_video, use_audio, nb_streams, input_has_video, input_has_audio;

  2169.     int codec_id;

  2170.     AVFormatParameters params, *ap = &params;

  2171. 

  2172.     if (!strcmp(filename, "-"))

  2173.         filename = "pipe:";

  2174. 

  2175.     oc = av_mallocz(sizeof(AVFormatContext));

  2176. 

  2177.     if (!file_oformat) {

  2178.         file_oformat = guess_format(NULL, filename, NULL);

  2179.         if (!file_oformat) {

  2180.             fprintf(stderr, "Unable for find a suitable output format for '%s'\n",

  2181.                     filename);

  2182.             exit(1);

  2183.         }

  2184.     }

  2185.     

  2186.     oc->oformat = file_oformat;

  2187. 

  2188.     if (!strcmp(file_oformat->name, "ffm") && 

  2189.         strstart(filename, "http:", NULL)) {

  2190.         /* special case for files sent to ffserver: we get the stream

  2191.            parameters from ffserver */

  2192.         if (read_ffserver_streams(oc, filename) < 0) {

  2193.             fprintf(stderr, "Could not read stream parameters from '%s'\n", filename);

  2194.             exit(1);

  2195.         }

  2196.     } else {

  2197.         use_video = file_oformat->video_codec != CODEC_ID_NONE;

  2198.         use_audio = file_oformat->audio_codec != CODEC_ID_NONE;

  2199. 

  2200.         /* disable if no corresponding type found and at least one

  2201.            input file */

  2202.         if (nb_input_files > 0) {

  2203.             check_audio_video_inputs(&input_has_video, &input_has_audio);

  2204.             if (!input_has_video)

  2205.                 use_video = 0;

  2206.             if (!input_has_audio)

  2207.                 use_audio = 0;

  2208.         }

  2209. 

  2210.         /* manual disable */

  2211.         if (audio_disable) {

  2212.             use_audio = 0;

  2213.         }

  2214.         if (video_disable) {

  2215.             use_video = 0;

  2216.         }

  2217.         

  2218.         nb_streams = 0;

  2219.         if (use_video) {

  2220.             AVCodecContext *video_enc;

  2221.             

  2222.             st = av_mallocz(sizeof(AVStream));

  2223.             if (!st) {

  2224.                 fprintf(stderr, "Could not alloc stream\n");

  2225.                 exit(1);

  2226.             }

  2227.             avcodec_get_context_defaults(&st->codec);

  2228. 

  2229.             video_enc = &st->codec;

  2230.             

  2231.             if(!strcmp(file_oformat->name, "mp4") || !strcmp(file_oformat->name, "mov") || !strcmp(file_oformat->name, "3gp"))

  2232.                 video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;

  2233.             if (video_stream_copy) {

  2234.                 st->stream_copy = 1;

  2235.                 video_enc->codec_type = CODEC_TYPE_VIDEO;

  2236.             } else {

  2237.                 char *p;

  2238.                 int i;

  2239.             

  2240.                 codec_id = file_oformat->video_codec;

  2241.                 if (video_codec_id != CODEC_ID_NONE)

  2242.                     codec_id = video_codec_id;

  2243.                 

  2244.                 video_enc->codec_id = codec_id;

  2245.                 

  2246.                 video_enc->bit_rate = video_bit_rate;

  2247.                 video_enc->bit_rate_tolerance = video_bit_rate_tolerance;

  2248.                 video_enc->frame_rate = frame_rate; 

  2249.                 video_enc->frame_rate_base = frame_rate_base; 

  2250.                 

  2251.                 video_enc->width = frame_width;

  2252.                 video_enc->height = frame_height;

  2253. 		video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);

  2254. 		video_enc->pix_fmt = frame_pix_fmt;

  2255. 

  2256.                 if (!intra_only)

  2257.                     video_enc->gop_size = gop_size;

  2258.                 else

  2259.                     video_enc->gop_size = 0;

  2260.                 if (video_qscale || same_quality) {

  2261.                     video_enc->flags |= CODEC_FLAG_QSCALE;

  2262.                     st->quality = FF_QP2LAMBDA * video_qscale;

  2263.                 }

  2264.                 

  2265.                 if(bitexact)

  2266.                     video_enc->flags |= CODEC_FLAG_BITEXACT;

  2267. 

  2268.                 video_enc->mb_decision = mb_decision;

  2269.                 

  2270.                 if (use_umv) {

  2271.                     video_enc->flags |= CODEC_FLAG_H263P_UMV;

  2272.                 }

  2273.            	if (use_aic) {

  2274.                     video_enc->flags |= CODEC_FLAG_H263P_AIC;

  2275.                 }

  2276.                 if (use_4mv) {

  2277.                     video_enc->mb_decision = FF_MB_DECISION_BITS; //FIXME remove

  2278.                     video_enc->flags |= CODEC_FLAG_4MV;

  2279.                 }

  2280.             

  2281.                 if(use_part)

  2282.                     video_enc->flags |= CODEC_FLAG_PART;

  2283.                

  2284.             

  2285.                 if (b_frames) {

  2286.                     video_enc->max_b_frames = b_frames;

  2287.                     video_enc->b_frame_strategy = 0;

  2288.                     video_enc->b_quant_factor = 2.0;

  2289.                 }

  2290.             

  2291.                 video_enc->qmin = video_qmin;

  2292.                 video_enc->qmax = video_qmax;

  2293.                 video_enc->mb_qmin = video_mb_qmin;

  2294.                 video_enc->mb_qmax = video_mb_qmax;

  2295.                 video_enc->max_qdiff = video_qdiff;

  2296.                 video_enc->qblur = video_qblur;

  2297.                 video_enc->qcompress = video_qcomp;

  2298.                 video_enc->rc_eq = video_rc_eq;

  2299.                 video_enc->debug= debug;

  2300.                 

  2301.                 p= video_rc_override_string;

  2302.                 for(i=0; p; i++){

  2303.                     int start, end, q;

  2304.                     int e=sscanf(p, "%d,%d,%d", &start, &end, &q);

  2305.                     if(e!=3){

  2306.                         fprintf(stderr, "error parsing rc_override\n");

  2307.                         exit(1);

  2308.                     }

  2309.                     video_enc->rc_override= 

  2310.                         av_realloc(video_enc->rc_override, 

  2311.                                    sizeof(RcOverride)*(i+1));

  2312.                     video_enc->rc_override[i].start_frame= start;

  2313.                     video_enc->rc_override[i].end_frame  = end;

  2314.                     if(q>0){

  2315.                         video_enc->rc_override[i].qscale= q;

  2316.                         video_enc->rc_override[i].quality_factor= 1.0;

  2317.                     }

  2318.                     else{

  2319.                         video_enc->rc_override[i].qscale= 0;

  2320.                         video_enc->rc_override[i].quality_factor= -q/100.0;

  2321.                     }

  2322.                     p= strchr(p, '/');

  2323.                     if(p) p++;

  2324.                 }

  2325.                 video_enc->rc_override_count=i;

  2326. 

  2327.                 video_enc->rc_max_rate = video_rc_max_rate;

  2328.                 video_enc->rc_min_rate = video_rc_min_rate;

  2329.                 video_enc->rc_buffer_size = video_rc_buffer_size;

  2330.                 video_enc->rc_buffer_aggressivity= video_rc_buffer_aggressivity;

  2331.                 video_enc->rc_initial_cplx= video_rc_initial_cplx;

  2332.                 video_enc->i_quant_factor = video_i_qfactor;

  2333.                 video_enc->b_quant_factor = video_b_qfactor;

  2334.                 video_enc->i_quant_offset = video_i_qoffset;

  2335.                 video_enc->b_quant_offset = video_b_qoffset;

  2336.                 video_enc->dct_algo = dct_algo;

  2337.                 video_enc->idct_algo = idct_algo;

  2338.                 video_enc->strict_std_compliance = strict;

  2339.                 if(packet_size){

  2340.                     video_enc->rtp_mode= 1;

  2341.                     video_enc->rtp_payload_size= packet_size;

  2342.                 }

  2343.             

  2344.                 if (do_psnr)

  2345.                     video_enc->flags|= CODEC_FLAG_PSNR;

  2346.             

  2347.                 video_enc->me_method = me_method;

  2348. 

  2349.                 /* two pass mode */

  2350.                 if (do_pass) {

  2351.                     if (do_pass == 1) {

  2352.                         video_enc->flags |= CODEC_FLAG_PASS1;

  2353.                     } else {

  2354.                         video_enc->flags |= CODEC_FLAG_PASS2;

  2355.                     }

  2356.                 }

  2357.             }

  2358.             oc->streams[nb_streams] = st;

  2359.             nb_streams++;

  2360.         }

  2361.     

  2362.         if (use_audio) {

  2363.             AVCodecContext *audio_enc;

  2364. 

  2365.             st = av_mallocz(sizeof(AVStream));

  2366.             if (!st) {

  2367.                 fprintf(stderr, "Could not alloc stream\n");

  2368.                 exit(1);

  2369.             }

  2370.             avcodec_get_context_defaults(&st->codec);

  2371. 

  2372.             audio_enc = &st->codec;

  2373.             audio_enc->codec_type = CODEC_TYPE_AUDIO;

  2374. 

  2375.             if(!strcmp(file_oformat->name, "mp4") || !strcmp(file_oformat->name, "mov") || !strcmp(file_oformat->name, "3gp"))

  2376.                 audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;

  2377.             if (audio_stream_copy) {

  2378.                 st->stream_copy = 1;

  2379.             } else {

  2380.                 codec_id = file_oformat->audio_codec;

  2381.                 if (audio_codec_id != CODEC_ID_NONE)

  2382.                     codec_id = audio_codec_id;

  2383.                 audio_enc->codec_id = codec_id;

  2384.                 

  2385.                 audio_enc->bit_rate = audio_bit_rate;

  2386.                 audio_enc->sample_rate = audio_sample_rate;

  2387.                 /* For audio codecs other than AC3 we limit */

  2388.                 /* the number of coded channels to stereo   */

  2389.                 if (audio_channels > 2 && codec_id != CODEC_ID_AC3) {

  2390.                     audio_enc->channels = 2;

  2391.                 } else

  2392.                     audio_enc->channels = audio_channels;

  2393.             }

  2394.             oc->streams[nb_streams] = st;

  2395.             nb_streams++;

  2396.         }

  2397. 

  2398.         oc->nb_streams = nb_streams;

  2399. 

  2400.         if (!nb_streams) {

  2401.             fprintf(stderr, "No audio or video streams available\n");

  2402.             exit(1);

  2403.         }

  2404. 

  2405.         if (str_title)

  2406.             pstrcpy(oc->title, sizeof(oc->title), str_title);

  2407.         if (str_author)

  2408.             pstrcpy(oc->author, sizeof(oc->author), str_author);

  2409.         if (str_copyright)

  2410.             pstrcpy(oc->copyright, sizeof(oc->copyright), str_copyright);

  2411.         if (str_comment)

  2412.             pstrcpy(oc->comment, sizeof(oc->comment), str_comment);

  2413.     }

  2414. 

  2415.     output_files[nb_output_files++] = oc;

  2416. 

  2417.     strcpy(oc->filename, filename);

  2418. 

  2419.     /* check filename in case of an image number is expected */

  2420.     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {

  2421.         if (filename_number_test(oc->filename) < 0) {

  2422.             print_error(oc->filename, AVERROR_NUMEXPECTED);

  2423.             exit(1);

  2424.         }

  2425.     }

  2426. 

  2427.     if (!(oc->oformat->flags & AVFMT_NOFILE)) {

  2428.         /* test if it already exists to avoid loosing precious files */

  2429.         if (!file_overwrite && 

  2430.             (strchr(filename, ':') == NULL ||

  2431.              strstart(filename, "file:", NULL))) {

  2432.             if (url_exist(filename)) {

  2433.                 int c;

  2434.                 

  2435.                 if ( !using_stdin ) {

  2436.                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);

  2437.                     fflush(stderr);

  2438.                     c = getchar();

  2439.                     if (toupper(c) != 'Y') {

  2440.                         fprintf(stderr, "Not overwriting - exiting\n");

  2441.                         exit(1);

  2442.                     }

  2443. 				}

  2444. 				else {

  2445.                     fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);

  2446.                     exit(1);

  2447. 				}

  2448.             }

  2449.         }

  2450.         

  2451.         /* open the file */

  2452.         if (url_fopen(&oc->pb, filename, URL_WRONLY) < 0) {

  2453.             fprintf(stderr, "Could not open '%s'\n", filename);

  2454.             exit(1);

  2455.         }

  2456.     }

  2457. 

  2458.     memset(ap, 0, sizeof(*ap));

  2459.     ap->image_format = image_format;

  2460.     if (av_set_parameters(oc, ap) < 0) {

  2461.         fprintf(stderr, "%s: Invalid encoding parameters\n",

  2462.                 oc->filename);

  2463.         exit(1);

  2464.     }

  2465. 

  2466.     /* reset some options */

  2467.     file_oformat = NULL;

  2468.     file_iformat = NULL;

  2469.     image_format = NULL;

  2470.     audio_disable = 0;

  2471.     video_disable = 0;

  2472.     audio_codec_id = CODEC_ID_NONE;

  2473.     video_codec_id = CODEC_ID_NONE;

  2474.     audio_stream_copy = 0;

  2475.     video_stream_copy = 0;

  2476. }

  2477. 

  2478. /* prepare dummy protocols for grab */

  2479. static void prepare_grab(void)

  2480. {

  2481.     int has_video, has_audio, i, j;

  2482.     AVFormatContext *oc;

  2483.     AVFormatContext *ic;

  2484.     AVFormatParameters vp1, *vp = &vp1;

  2485.     AVFormatParameters ap1, *ap = &ap1;

  2486.     

  2487.     /* see if audio/video inputs are needed */

  2488.     has_video = 0;

  2489.     has_audio = 0;

  2490.     memset(ap, 0, sizeof(*ap));

  2491.     memset(vp, 0, sizeof(*vp));

  2492.     for(j=0;j<nb_output_files;j++) {

  2493.         oc = output_files[j];

  2494.         for(i=0;i<oc->nb_streams;i++) {

  2495.             AVCodecContext *enc = &oc->streams[i]->codec;

  2496.             switch(enc->codec_type) {

  2497.             case CODEC_TYPE_AUDIO:

  2498.                 if (enc->sample_rate > ap->sample_rate)

  2499.                     ap->sample_rate = enc->sample_rate;

  2500.                 if (enc->channels > ap->channels)

  2501.                     ap->channels = enc->channels;

  2502.                 has_audio = 1;

  2503.                 break;

  2504.             case CODEC_TYPE_VIDEO:

  2505.                 if (enc->width > vp->width)

  2506.                     vp->width = enc->width;

  2507.                 if (enc->height > vp->height)

  2508.                     vp->height = enc->height;

  2509.                 

  2510.                 assert(enc->frame_rate_base == DEFAULT_FRAME_RATE_BASE);

  2511.                 if (enc->frame_rate > vp->frame_rate){

  2512.                     vp->frame_rate      = enc->frame_rate;

  2513.                     vp->frame_rate_base = enc->frame_rate_base;

  2514.                 }

  2515.                 has_video = 1;

  2516.                 break;

  2517.             default:

  2518.                 av_abort();

  2519.             }

  2520.         }

  2521.     }

  2522.     

  2523.     if (has_video == 0 && has_audio == 0) {

  2524.         fprintf(stderr, "Output file must have at least one audio or video stream\n");

  2525.         exit(1);

  2526.     }

  2527.     

  2528.     if (has_video) {

  2529.         AVInputFormat *fmt1;

  2530.         fmt1 = av_find_input_format(video_grab_format);

  2531.         vp->device  = video_device;

  2532.         vp->channel = video_channel;

  2533. 	vp->standard = video_standard;

  2534.         if (av_open_input_file(&ic, "", fmt1, 0, vp) < 0) {

  2535.             fprintf(stderr, "Could not find video grab device\n");

  2536.             exit(1);

  2537.         }

  2538.         /* by now video grab has one stream */

  2539.         ic->streams[0]->r_frame_rate      = vp->frame_rate;

  2540.         ic->streams[0]->r_frame_rate_base = vp->frame_rate_base;

  2541.         input_files[nb_input_files] = ic;

  2542.         dump_format(ic, nb_input_files, "", 0);

  2543.         nb_input_files++;

  2544.     }

  2545.     if (has_audio && audio_grab_format) {

  2546.         AVInputFormat *fmt1;

  2547.         fmt1 = av_find_input_format(audio_grab_format);

  2548.         ap->device = audio_device;

  2549.         if (av_open_input_file(&ic, "", fmt1, 0, ap) < 0) {

  2550.             fprintf(stderr, "Could not find audio grab device\n");

  2551.             exit(1);

  2552.         }

  2553.         input_files[nb_input_files] = ic;

  2554.         dump_format(ic, nb_input_files, "", 0);

  2555.         nb_input_files++;

  2556.     }

  2557. }

  2558. 

  2559. /* same option as mencoder */

  2560. static void opt_pass(const char *pass_str)

  2561. {

  2562.     int pass;

  2563.     pass = atoi(pass_str);

  2564.     if (pass != 1 && pass != 2) {

  2565.         fprintf(stderr, "pass number can be only 1 or 2\n");

  2566.         exit(1);

  2567.     }

  2568.     do_pass = pass;

  2569. }

  2570. 

  2571. #if defined(CONFIG_WIN32) || defined(CONFIG_OS2)

  2572. static int64_t getutime(void)

  2573. {

  2574.   return av_gettime();

  2575. }

  2576. #else

  2577. static int64_t getutime(void)

  2578. {

  2579.     struct rusage rusage;

  2580. 

  2581.     getrusage(RUSAGE_SELF, &rusage);

  2582.     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;

  2583. }

  2584. #endif

  2585. 

  2586. extern int ffm_nopts;

  2587. 

  2588. static void opt_bitexact(void)

  2589. {

  2590.     bitexact=1;

  2591.     /* disable generate of real time pts in ffm (need to be supressed anyway) */

  2592.     ffm_nopts = 1;

  2593. }

  2594. 

  2595. static void show_formats(void)

  2596. {

  2597.     AVInputFormat *ifmt;

  2598.     AVOutputFormat *ofmt;

  2599.     AVImageFormat *image_fmt;

  2600.     URLProtocol *up;

  2601.     AVCodec *p;

  2602.     const char **pp;

  2603. 

  2604.     printf("Output audio/video file formats:");

  2605.     for(ofmt = first_oformat; ofmt != NULL; ofmt = ofmt->next) {

  2606.         printf(" %s", ofmt->name);

  2607.     }

  2608.     printf("\n");

  2609. 

  2610.     printf("Input audio/video file formats:");

  2611.     for(ifmt = first_iformat; ifmt != NULL; ifmt = ifmt->next) {

  2612.         printf(" %s", ifmt->name);

  2613.     }

  2614.     printf("\n");

  2615. 

  2616.     printf("Output image formats:");

  2617.     for(image_fmt = first_image_format; image_fmt != NULL; 

  2618.         image_fmt = image_fmt->next) {

  2619.         if (image_fmt->img_write)

  2620.             printf(" %s", image_fmt->name);

  2621.     }

  2622.     printf("\n");

  2623. 

  2624.     printf("Input image formats:");

  2625.     for(image_fmt = first_image_format; image_fmt != NULL; 

  2626.         image_fmt = image_fmt->next) {

  2627.         if (image_fmt->img_read)

  2628.             printf(" %s", image_fmt->name);

  2629.     }

  2630.     printf("\n");

  2631. 

  2632.     printf("Codecs:\n");

  2633.     printf("  Encoders:");

  2634.     for(p = first_avcodec; p != NULL; p = p->next) {

  2635.         if (p->encode)

  2636.             printf(" %s", p->name);

  2637.     }

  2638.     printf("\n");

  2639. 

  2640.     printf("  Decoders:");

  2641.     for(p = first_avcodec; p != NULL; p = p->next) {

  2642.         if (p->decode)

  2643.             printf(" %s", p->name);

  2644.     }

  2645.     printf("\n");

  2646. 

  2647.     printf("Supported file protocols:");

  2648.     for(up = first_protocol; up != NULL; up = up->next)

  2649.         printf(" %s:", up->name);

  2650.     printf("\n");

  2651.     

  2652.     printf("Frame size, frame rate abbreviations: ntsc pal qntsc qpal sntsc spal film ntsc-film sqcif qcif cif 4cif\n");

  2653.     printf("Motion estimation methods:");

  2654.     pp = motion_str;

  2655.     while (*pp) {

  2656.         printf(" %s", *pp);

  2657.         if ((pp - motion_str + 1) == ME_ZERO) 

  2658.             printf("(fastest)");

  2659.         else if ((pp - motion_str + 1) == ME_FULL) 

  2660.             printf("(slowest)");

  2661.         else if ((pp - motion_str + 1) == ME_EPZS) 

  2662.             printf("(default)");

  2663.         pp++;

  2664.     }

  2665.     printf("\n");

  2666.     exit(1);

  2667. }

  2668. 

  2669. const OptionDef options[] = {

  2670.     /* main options */

  2671.     { "L", 0, {(void*)show_license}, "show license" },

  2672.     { "h", 0, {(void*)show_help}, "show help" },

  2673.     { "formats", 0, {(void*)show_formats}, "show available formats, codecs, protocols, ..." },

  2674.     { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },

  2675.     { "img", HAS_ARG, {(void*)opt_image_format}, "force image format", "img_fmt" },

  2676.     { "i", HAS_ARG, {(void*)opt_input_file}, "input file name", "filename" },

  2677.     { "y", OPT_BOOL, {(void*)&file_overwrite}, "overwrite output files" },

  2678.     { "map", HAS_ARG | OPT_EXPERT, {(void*)opt_map}, "set input stream mapping", "file:stream" },

  2679.     { "t", HAS_ARG, {(void*)opt_recording_time}, "set the recording time", "duration" },

  2680.     { "start", HAS_ARG, {(void*)opt_start_time}, "set the start time offset", "time_off" },

  2681.     { "title", HAS_ARG | OPT_STRING, {(void*)&str_title}, "set the title", "string" },

  2682.     { "author", HAS_ARG | OPT_STRING, {(void*)&str_author}, "set the author", "string" },

  2683.     { "copyright", HAS_ARG | OPT_STRING, {(void*)&str_copyright}, "set the copyright", "string" },

  2684.     { "comment", HAS_ARG | OPT_STRING, {(void*)&str_comment}, "set the comment", "string" },

  2685.     { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },

  2686.     { "benchmark", OPT_BOOL | OPT_EXPERT, {(void*)&do_benchmark}, 

  2687.       "add timings for benchmarking" },

  2688.     { "hex", OPT_BOOL | OPT_EXPERT, {(void*)&do_hex_dump}, 

  2689.       "dump each input packet" },

  2690.     { "bitexact", OPT_EXPERT, {(void*)opt_bitexact}, "only use bit exact algorithms (for codec testing)" }, 

  2691.     { "re", OPT_BOOL | OPT_EXPERT, {(void*)&rate_emu}, "read input at native frame rate", "" },

  2692.     { "loop", OPT_BOOL | OPT_EXPERT, {(void*)&loop_input}, "loop (current only works with images)" },

  2693.     { "v", HAS_ARG, {(void*)opt_verbose}, "control amount of logging", "verbose" },

  2694. 

  2695.     /* video options */

  2696.     { "b", HAS_ARG | OPT_VIDEO, {(void*)opt_video_bitrate}, "set video bitrate (in kbit/s)", "bitrate" },

  2697.     { "r", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_rate}, "set frame rate (Hz value, fraction or abbreviation)", "rate" },

  2698.     { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },

  2699.     { "aspect", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_aspect_ratio}, "set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)", "aspect" },

  2700.     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },

  2701.     { "croptop", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop_top}, "set top crop band size (in pixels)", "size" },

  2702.     { "cropbottom", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop_bottom}, "set bottom crop band size (in pixels)", "size" },

  2703.     { "cropleft", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop_left}, "set left crop band size (in pixels)", "size" },

  2704.     { "cropright", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop_right}, "set right crop band size (in pixels)", "size" },

  2705.     { "g", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_gop_size}, "set the group of picture size", "gop_size" },

  2706.     { "intra", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&intra_only}, "use only intra frames"},

  2707.     { "vn", OPT_BOOL | OPT_VIDEO, {(void*)&video_disable}, "disable video" },

  2708.     { "qscale", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_qscale}, "use fixed video quantiser scale (VBR)", "q" },

  2709.     { "qmin", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_qmin}, "min video quantiser scale (VBR)", "q" },

  2710.     { "qmax", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_qmax}, "max video quantiser scale (VBR)", "q" },

  2711.     { "mbqmin", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_mb_qmin}, "min macroblock quantiser scale (VBR)", "q" },

  2712.     { "mbqmax", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_mb_qmax}, "max macroblock quantiser scale (VBR)", "q" },

  2713.     { "qdiff", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_qdiff}, "max difference between the quantiser scale (VBR)", "q" },

  2714.     { "qblur", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_qblur}, "video quantiser scale blur (VBR)", "blur" },

  2715.     { "qcomp", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_qcomp}, "video quantiser scale compression (VBR)", "compression" },

  2716.     { "rc_init_cplx", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_rc_initial_cplx}, "initial complexity for 1-pass encoding", "complexity" },

  2717.     { "b_qfactor", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_b_qfactor}, "qp factor between p and b frames", "factor" },

  2718.     { "i_qfactor", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_i_qfactor}, "qp factor between p and i frames", "factor" },

  2719.     { "b_qoffset", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_b_qoffset}, "qp offset between p and b frames", "offset" },

  2720.     { "i_qoffset", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_i_qoffset}, "qp offset between p and i frames", "offset" },

  2721. //    { "b_strategy", HAS_ARG | OPT_EXPERT, {(void*)opt_b_strategy}, "dynamic b frame selection strategy", "strategy" },

  2722.     { "rc_eq", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_video_rc_eq}, "set rate control equation", "equation" },

  2723.     { "rc_override", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_video_rc_override_string}, "rate control override for specific intervals", "override" },

  2724.     { "bt", HAS_ARG | OPT_VIDEO, {(void*)opt_video_bitrate_tolerance}, "set video bitrate tolerance (in kbit/s)", "tolerance" },

  2725.     { "maxrate", HAS_ARG | OPT_VIDEO, {(void*)opt_video_bitrate_max}, "set max video bitrate tolerance (in kbit/s)", "bitrate" },

  2726.     { "minrate", HAS_ARG | OPT_VIDEO, {(void*)opt_video_bitrate_min}, "set min video bitrate tolerance (in kbit/s)", "bitrate" },

  2727.     { "bufsize", HAS_ARG | OPT_VIDEO, {(void*)opt_video_buffer_size}, "set ratecontrol buffere size (in kbit)", "size" },

  2728.     { "vcodec", HAS_ARG | OPT_VIDEO, {(void*)opt_video_codec}, "force video codec ('copy' to copy stream)", "codec" },

  2729.     { "me", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_motion_estimation}, "set motion estimation method", 

  2730.       "method" },

  2731.     { "dct_algo", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_dct_algo}, "set dct algo",  "algo" },

  2732.     { "idct_algo", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_idct_algo}, "set idct algo",  "algo" },

  2733.     { "er", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_error_resilience}, "set error resilience",  "n" },

  2734.     { "ec", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_error_concealment}, "set error concealment",  "bit_mask" },

  2735.     { "bf", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_b_frames}, "use 'frames' B frames", "frames" },

  2736.     { "hq", OPT_BOOL, {(void*)&mb_decision}, "activate high quality settings" },

  2737.     { "mbd", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_mb_decision}, "macroblock decision", "mode" },

  2738.     { "4mv", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&use_4mv}, "use four motion vector by macroblock (only MPEG-4)" },

  2739.     { "part", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&use_part}, "use data partitioning (only MPEG-4)" },

  2740.     { "bug", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_workaround_bugs}, "workaround not auto detected encoder bugs", "param" },

  2741.     { "ps", HAS_ARG | OPT_EXPERT, {(void*)opt_packet_size}, "set packet size in bits", "size" },

  2742.     { "strict", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_strict}, "how strictly to follow the standarts", "strictness" },

  2743.     { "sameq", OPT_BOOL | OPT_VIDEO, {(void*)&same_quality}, 

  2744.       "use same video quality as source (implies VBR)" },

  2745.     { "pass", HAS_ARG | OPT_VIDEO, {(void*)&opt_pass}, "select the pass number (1 or 2)", "n" },

  2746.     { "passlogfile", HAS_ARG | OPT_STRING | OPT_VIDEO, {(void*)&pass_logfilename}, "select two pass log file name", "file" },

  2747.     { "deinterlace", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&do_deinterlace}, 

  2748.       "deinterlace pictures" },

  2749.     { "psnr", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&do_psnr}, "calculate PSNR of compressed frames" },

  2750.     { "vstats", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&do_vstats}, "dump video coding statistics to file" }, 

  2751.     { "vhook", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)add_frame_hooker}, "insert video processing module", "module" },

  2752.     { "aic", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&use_aic}, "enable Advanced intra coding (h263+)" },

  2753.     { "umv", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&use_umv}, "enable Unlimited Motion Vector (h263+)" },

  2754. 

  2755.     /* audio options */

  2756.     { "ab", HAS_ARG | OPT_AUDIO, {(void*)opt_audio_bitrate}, "set audio bitrate (in kbit/s)", "bitrate", },

  2757.     { "ar", HAS_ARG | OPT_AUDIO, {(void*)opt_audio_rate}, "set audio sampling rate (in Hz)", "rate" },

  2758.     { "ac", HAS_ARG | OPT_AUDIO, {(void*)opt_audio_channels}, "set number of audio channels", "channels" },

  2759.     { "an", OPT_BOOL | OPT_AUDIO, {(void*)&audio_disable}, "disable audio" },

  2760.     { "acodec", HAS_ARG | OPT_AUDIO, {(void*)opt_audio_codec}, "force audio codec ('copy' to copy stream)", "codec" },

  2761. 

  2762.     /* grab options */

  2763.     { "vd", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, {(void*)opt_video_device}, "set video grab device", "device" },

  2764.     { "vc", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, {(void*)opt_video_channel}, "set video grab channel (DV1394 only)", "channel" },

  2765.     { "tvstd", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, {(void*)opt_video_standard}, "set television standard (NTSC, PAL (SECAM))", "standard" },

  2766.     { "dv1394", OPT_EXPERT | OPT_GRAB, {(void*)opt_dv1394}, "set DV1394 grab", "" },

  2767.     { "ad", HAS_ARG | OPT_EXPERT | OPT_AUDIO | OPT_GRAB, {(void*)opt_audio_device}, "set audio device", "device" },

  2768.     { NULL, },

  2769. };

  2770. 

  2771. static void show_banner(void)

  2772. {

  2773.     printf("ffmpeg version " FFMPEG_VERSION ", Copyright (c) 2000-2003 Fabrice Bellard\n");

  2774. }

  2775. 

  2776. static void show_license(void)

  2777. {

  2778.     show_banner();

  2779.     printf(

  2780.     "This library is free software; you can redistribute it and/or\n"

  2781.     "modify it under the terms of the GNU Lesser General Public\n"

  2782.     "License as published by the Free Software Foundation; either\n"

  2783.     "version 2 of the License, or (at your option) any later version.\n"

  2784.     "\n"

  2785.     "This library is distributed in the hope that it will be useful,\n"

  2786.     "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"

  2787.     "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n"

  2788.     "Lesser General Public License for more details.\n"

  2789.     "\n"

  2790.     "You should have received a copy of the GNU Lesser General Public\n"

  2791.     "License along with this library; if not, write to the Free Software\n"

  2792.     "Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA\n"

  2793.     );

  2794.     exit(1);

  2795. }

  2796. 

  2797. static void show_help(void)

  2798. {

  2799.     show_banner();

  2800.     printf("usage: ffmpeg [[options] -i input_file]... {[options] outfile}...\n"

  2801.            "Hyper fast Audio and Video encoder\n");

  2802.     printf("\n");

  2803.     show_help_options(options, "Main options:\n",

  2804.                       OPT_EXPERT | OPT_AUDIO | OPT_VIDEO, 0);

  2805.     show_help_options(options, "\nVideo options:\n",

  2806.                       OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB, 

  2807.                       OPT_VIDEO);

  2808.     show_help_options(options, "\nAdvanced Video options:\n",

  2809.                       OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB, 

  2810.                       OPT_VIDEO | OPT_EXPERT);

  2811.     show_help_options(options, "\nAudio options:\n",

  2812.                       OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB, 

  2813.                       OPT_AUDIO);

  2814.     show_help_options(options, "\nAdvanced Audio options:\n",

  2815.                       OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB, 

  2816.                       OPT_AUDIO | OPT_EXPERT);

  2817.     show_help_options(options, "\nAudio/Video grab options:\n",

  2818.                       OPT_GRAB, 

  2819.                       OPT_GRAB);

  2820.     show_help_options(options, "\nAdvanced options:\n",

  2821.                       OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB, 

  2822.                       OPT_EXPERT);

  2823.     exit(1);

  2824. }

  2825. 

  2826. void parse_arg_file(const char *filename)

  2827. {

  2828.     opt_output_file(filename);

  2829. }

  2830. 

  2831. int main(int argc, char **argv)

  2832. {

  2833.     int i;

  2834.     int64_t ti;

  2835. 

  2836.     av_register_all();

  2837. 

  2838.     if (argc <= 1)

  2839.         show_help();

  2840.     

  2841.     /* parse options */

  2842.     parse_options(argc, argv, options);

  2843. 

  2844.     /* file converter / grab */

  2845.     if (nb_output_files <= 0) {

  2846.         fprintf(stderr, "Must supply at least one output file\n");

  2847.         exit(1);

  2848.     }

  2849.     

  2850.     if (nb_input_files == 0) {

  2851.         prepare_grab();

  2852.     }

  2853. 

  2854.     ti = getutime();

  2855.     av_encode(output_files, nb_output_files, input_files, nb_input_files, 

  2856.               stream_maps, nb_stream_maps);

  2857.     ti = getutime() - ti;

  2858.     if (do_benchmark) {

  2859.         printf("bench: utime=%0.3fs\n", ti / 1000000.0);

  2860.     }

  2861. 

  2862.     /* close files */

  2863.     for(i=0;i<nb_output_files;i++) {

  2864.         /* maybe av_close_output_file ??? */

  2865.         AVFormatContext *s = output_files[i];

  2866. 	int j;

  2867.         if (!(s->oformat->flags & AVFMT_NOFILE))

  2868. 	    url_fclose(&s->pb);

  2869. 	for(j=0;j<s->nb_streams;j++)

  2870. 	    av_free(s->streams[j]);

  2871.         av_free(s);

  2872.     }

  2873.     for(i=0;i<nb_input_files;i++)

  2874.         av_close_input_file(input_files[i]);

  2875. 

  2876.     av_free_static();

  2877. 

  2878.     

  2879. #ifdef POWERPC_PERFORMANCE_REPORT

  2880.     extern void powerpc_display_perf_report(void);

  2881.     powerpc_display_perf_report();

  2882. #endif /* POWERPC_PERFORMANCE_REPORT */

  2883. 

  2884. #ifndef CONFIG_WIN32

  2885.     if (received_sigterm) {

  2886.         fprintf(stderr,

  2887.             "Received signal %d: terminating.\n",

  2888.             (int) received_sigterm);

  2889.         exit (255);

  2890.     }

  2891. #endif

  2892.     exit(0); /* not all OS-es handle main() return value */

  2893.     return 0;

  2894. }