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FFmpeg/libavcodec/utils.c

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  1. /*

  2.  * utils for libavcodec

  3.  * Copyright (c) 2001 Fabrice Bellard.

  4.  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>

  5.  *

  6.  * This file is part of FFmpeg.

  7.  *

  8.  * FFmpeg is free software; you can redistribute it and/or

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

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

  11.  * version 2.1 of the License, or (at your option) any later version.

  12.  *

  13.  * FFmpeg is distributed in the hope that it will be useful,

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

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

  16.  * Lesser General Public License for more details.

  17.  *

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

  19.  * License along with FFmpeg; if not, write to the Free Software

  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  21.  */

  22. 

  23. /**

  24.  * @file utils.c

  25.  * utils.

  26.  */

  27. 

  28. #include "libavutil/integer.h"

  29. #include "libavutil/crc.h"

  30. #include "avcodec.h"

  31. #include "dsputil.h"

  32. #include "opt.h"

  33. #include "imgconvert.h"

  34. #include <stdarg.h>

  35. #include <limits.h>

  36. #include <float.h>

  37. #if !defined(HAVE_MKSTEMP)

  38. #include <fcntl.h>

  39. #endif

  40. 

  41. const uint8_t ff_reverse[256]={

  42. 0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,

  43. 0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,

  44. 0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,

  45. 0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,

  46. 0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,

  47. 0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,

  48. 0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,

  49. 0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,

  50. 0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,

  51. 0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,

  52. 0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,

  53. 0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,

  54. 0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,

  55. 0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,

  56. 0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,

  57. 0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,

  58. };

  59. 

  60. static int volatile entangled_thread_counter=0;

  61. 

  62. void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)

  63. {

  64.     if(min_size < *size)

  65.         return ptr;

  66. 

  67.     *size= FFMAX(17*min_size/16 + 32, min_size);

  68. 

  69.     ptr= av_realloc(ptr, *size);

  70.     if(!ptr) //we could set this to the unmodified min_size but this is safer if the user lost the ptr and uses NULL now

  71.         *size= 0;

  72. 

  73.     return ptr;

  74. }

  75. 

  76. /* encoder management */

  77. AVCodec *first_avcodec = NULL;

  78. 

  79. AVCodec *av_codec_next(AVCodec *c){

  80.     if(c) return c->next;

  81.     else  return first_avcodec;

  82. }

  83. 

  84. void register_avcodec(AVCodec *format)

  85. {

  86.     AVCodec **p;

  87.     p = &first_avcodec;

  88.     while (*p != NULL) p = &(*p)->next;

  89.     *p = format;

  90.     format->next = NULL;

  91. }

  92. 

  93. void avcodec_set_dimensions(AVCodecContext *s, int width, int height){

  94.     s->coded_width = width;

  95.     s->coded_height= height;

  96.     s->width = -((-width )>>s->lowres);

  97.     s->height= -((-height)>>s->lowres);

  98. }

  99. 

  100. typedef struct InternalBuffer{

  101.     int last_pic_num;

  102.     uint8_t *base[4];

  103.     uint8_t *data[4];

  104.     int linesize[4];

  105.     int width, height;

  106.     enum PixelFormat pix_fmt;

  107. }InternalBuffer;

  108. 

  109. #define INTERNAL_BUFFER_SIZE 32

  110. 

  111. #define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))

  112. 

  113. void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){

  114.     int w_align= 1;

  115.     int h_align= 1;

  116. 

  117.     switch(s->pix_fmt){

  118.     case PIX_FMT_YUV420P:

  119.     case PIX_FMT_YUYV422:

  120.     case PIX_FMT_UYVY422:

  121.     case PIX_FMT_YUV422P:

  122.     case PIX_FMT_YUV444P:

  123.     case PIX_FMT_GRAY8:

  124.     case PIX_FMT_GRAY16BE:

  125.     case PIX_FMT_GRAY16LE:

  126.     case PIX_FMT_YUVJ420P:

  127.     case PIX_FMT_YUVJ422P:

  128.     case PIX_FMT_YUVJ444P:

  129.     case PIX_FMT_YUVA420P:

  130.         w_align= 16; //FIXME check for non mpeg style codecs and use less alignment

  131.         h_align= 16;

  132.         break;

  133.     case PIX_FMT_YUV411P:

  134.     case PIX_FMT_UYYVYY411:

  135.         w_align=32;

  136.         h_align=8;

  137.         break;

  138.     case PIX_FMT_YUV410P:

  139.         if(s->codec_id == CODEC_ID_SVQ1){

  140.             w_align=64;

  141.             h_align=64;

  142.         }

  143.     case PIX_FMT_RGB555:

  144.         if(s->codec_id == CODEC_ID_RPZA){

  145.             w_align=4;

  146.             h_align=4;

  147.         }

  148.     case PIX_FMT_PAL8:

  149.         if(s->codec_id == CODEC_ID_SMC){

  150.             w_align=4;

  151.             h_align=4;

  152.         }

  153.         break;

  154.     case PIX_FMT_BGR24:

  155.         if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){

  156.             w_align=4;

  157.             h_align=4;

  158.         }

  159.         break;

  160.     default:

  161.         w_align= 1;

  162.         h_align= 1;

  163.         break;

  164.     }

  165. 

  166.     *width = ALIGN(*width , w_align);

  167.     *height= ALIGN(*height, h_align);

  168. }

  169. 

  170. int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){

  171.     if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)

  172.         return 0;

  173. 

  174.     av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);

  175.     return -1;

  176. }

  177. 

  178. int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){

  179.     int i;

  180.     int w= s->width;

  181.     int h= s->height;

  182.     InternalBuffer *buf;

  183.     int *picture_number;

  184. 

  185.     if(pic->data[0]!=NULL) {

  186.         av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");

  187.         return -1;

  188.     }

  189.     if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {

  190.         av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");

  191.         return -1;

  192.     }

  193. 

  194.     if(avcodec_check_dimensions(s,w,h))

  195.         return -1;

  196. 

  197.     if(s->internal_buffer==NULL){

  198.         s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));

  199.     }

  200. #if 0

  201.     s->internal_buffer= av_fast_realloc(

  202.         s->internal_buffer,

  203.         &s->internal_buffer_size,

  204.         sizeof(InternalBuffer)*FFMAX(99,  s->internal_buffer_count+1)/*FIXME*/

  205.         );

  206. #endif

  207. 

  208.     buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];

  209.     picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack

  210.     (*picture_number)++;

  211. 

  212.     if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){

  213.         for(i=0; i<4; i++){

  214.             av_freep(&buf->base[i]);

  215.             buf->data[i]= NULL;

  216.         }

  217.     }

  218. 

  219.     if(buf->base[0]){

  220.         pic->age= *picture_number - buf->last_pic_num;

  221.         buf->last_pic_num= *picture_number;

  222.     }else{

  223.         int h_chroma_shift, v_chroma_shift;

  224.         int size[4] = {0};

  225.         int tmpsize;

  226.         AVPicture picture;

  227. 

  228.         avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);

  229. 

  230.         avcodec_align_dimensions(s, &w, &h);

  231. 

  232.         if(!(s->flags&CODEC_FLAG_EMU_EDGE)){

  233.             w+= EDGE_WIDTH*2;

  234.             h+= EDGE_WIDTH*2;

  235.         }

  236.         avcodec_align_dimensions(s, &w, &h);

  237. 

  238.         ff_fill_linesize(&picture, s->pix_fmt, w);

  239. 

  240.         for (i=0; i<4; i++)

  241.             picture.linesize[i] = ALIGN(picture.linesize[i], STRIDE_ALIGN);

  242. 

  243.         tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h);

  244. 

  245.         for (i=0; i<3 && picture.data[i+1]; i++)

  246.             size[i] = picture.data[i+1] - picture.data[i];

  247.         size[i] = tmpsize - (picture.data[i] - picture.data[0]);

  248. 

  249.         buf->last_pic_num= -256*256*256*64;

  250.         memset(buf->base, 0, sizeof(buf->base));

  251.         memset(buf->data, 0, sizeof(buf->data));

  252. 

  253.         for(i=0; i<4 && size[i]; i++){

  254.             const int h_shift= i==0 ? 0 : h_chroma_shift;

  255.             const int v_shift= i==0 ? 0 : v_chroma_shift;

  256. 

  257.             buf->linesize[i]= picture.linesize[i];

  258. 

  259.             buf->base[i]= av_malloc(size[i]+16); //FIXME 16

  260.             if(buf->base[i]==NULL) return -1;

  261.             memset(buf->base[i], 128, size[i]);

  262. 

  263.             // no edge if EDEG EMU or not planar YUV, we check for PAL8 redundantly to protect against a exploitable bug regression ...

  264.             if((s->flags&CODEC_FLAG_EMU_EDGE) || (s->pix_fmt == PIX_FMT_PAL8) || !size[2])

  265.                 buf->data[i] = buf->base[i];

  266.             else

  267.                 buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);

  268.         }

  269.         buf->width  = s->width;

  270.         buf->height = s->height;

  271.         buf->pix_fmt= s->pix_fmt;

  272.         pic->age= 256*256*256*64;

  273.     }

  274.     pic->type= FF_BUFFER_TYPE_INTERNAL;

  275. 

  276.     for(i=0; i<4; i++){

  277.         pic->base[i]= buf->base[i];

  278.         pic->data[i]= buf->data[i];

  279.         pic->linesize[i]= buf->linesize[i];

  280.     }

  281.     s->internal_buffer_count++;

  282. 

  283.     if(s->debug&FF_DEBUG_BUFFERS)

  284.         av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);

  285. 

  286.     return 0;

  287. }

  288. 

  289. void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){

  290.     int i;

  291.     InternalBuffer *buf, *last;

  292. 

  293.     assert(pic->type==FF_BUFFER_TYPE_INTERNAL);

  294.     assert(s->internal_buffer_count);

  295. 

  296.     buf = NULL; /* avoids warning */

  297.     for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize

  298.         buf= &((InternalBuffer*)s->internal_buffer)[i];

  299.         if(buf->data[0] == pic->data[0])

  300.             break;

  301.     }

  302.     assert(i < s->internal_buffer_count);

  303.     s->internal_buffer_count--;

  304.     last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];

  305. 

  306.     FFSWAP(InternalBuffer, *buf, *last);

  307. 

  308.     for(i=0; i<4; i++){

  309.         pic->data[i]=NULL;

  310. //        pic->base[i]=NULL;

  311.     }

  312. //printf("R%X\n", pic->opaque);

  313. 

  314.     if(s->debug&FF_DEBUG_BUFFERS)

  315.         av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);

  316. }

  317. 

  318. int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){

  319.     AVFrame temp_pic;

  320.     int i;

  321. 

  322.     /* If no picture return a new buffer */

  323.     if(pic->data[0] == NULL) {

  324.         /* We will copy from buffer, so must be readable */

  325.         pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;

  326.         return s->get_buffer(s, pic);

  327.     }

  328. 

  329.     /* If internal buffer type return the same buffer */

  330.     if(pic->type == FF_BUFFER_TYPE_INTERNAL)

  331.         return 0;

  332. 

  333.     /*

  334.      * Not internal type and reget_buffer not overridden, emulate cr buffer

  335.      */

  336.     temp_pic = *pic;

  337.     for(i = 0; i < 4; i++)

  338.         pic->data[i] = pic->base[i] = NULL;

  339.     pic->opaque = NULL;

  340.     /* Allocate new frame */

  341.     if (s->get_buffer(s, pic))

  342.         return -1;

  343.     /* Copy image data from old buffer to new buffer */

  344.     av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,

  345.              s->height);

  346.     s->release_buffer(s, &temp_pic); // Release old frame

  347.     return 0;

  348. }

  349. 

  350. int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){

  351.     int i;

  352. 

  353.     for(i=0; i<count; i++){

  354.         int r= func(c, arg[i]);

  355.         if(ret) ret[i]= r;

  356.     }

  357.     return 0;

  358. }

  359. 

  360. enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){

  361.     return fmt[0];

  362. }

  363. 

  364. static const char* context_to_name(void* ptr) {

  365.     AVCodecContext *avc= ptr;

  366. 

  367.     if(avc && avc->codec && avc->codec->name)

  368.         return avc->codec->name;

  369.     else

  370.         return "NULL";

  371. }

  372. 

  373. #define OFFSET(x) offsetof(AVCodecContext,x)

  374. #define DEFAULT 0 //should be NAN but it does not work as it is not a constant in glibc as required by ANSI/ISO C

  375. //these names are too long to be readable

  376. #define V AV_OPT_FLAG_VIDEO_PARAM

  377. #define A AV_OPT_FLAG_AUDIO_PARAM

  378. #define S AV_OPT_FLAG_SUBTITLE_PARAM

  379. #define E AV_OPT_FLAG_ENCODING_PARAM

  380. #define D AV_OPT_FLAG_DECODING_PARAM

  381. 

  382. #define AV_CODEC_DEFAULT_BITRATE 200*1000

  383. 

  384. static const AVOption options[]={

  385. {"b", "set bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, AV_CODEC_DEFAULT_BITRATE, INT_MIN, INT_MAX, V|E},

  386. {"ab", "set bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, 64*1000, INT_MIN, INT_MAX, A|E},

  387. {"bt", "set video bitrate tolerance (in bits/s)", OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, AV_CODEC_DEFAULT_BITRATE*20, 1, INT_MAX, V|E},

  388. {"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, 0, UINT_MAX, V|A|E|D, "flags"},

  389. {"mv4", "use four motion vector by macroblock (mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_4MV, INT_MIN, INT_MAX, V|E, "flags"},

  390. {"obmc", "use overlapped block motion compensation (h263+)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_OBMC, INT_MIN, INT_MAX, V|E, "flags"},

  391. {"qpel", "use 1/4 pel motion compensation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QPEL, INT_MIN, INT_MAX, V|E, "flags"},

  392. {"loop", "use loop filter", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOOP_FILTER, INT_MIN, INT_MAX, V|E, "flags"},

  393. {"qscale", "use fixed qscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QSCALE, INT_MIN, INT_MAX, 0, "flags"},

  394. {"gmc", "use gmc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GMC, INT_MIN, INT_MAX, V|E, "flags"},

  395. {"mv0", "always try a mb with mv=<0,0>", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_MV0, INT_MIN, INT_MAX, V|E, "flags"},

  396. {"part", "use data partitioning", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PART, INT_MIN, INT_MAX, V|E, "flags"},

  397. {"input_preserved", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INPUT_PRESERVED, INT_MIN, INT_MAX, 0, "flags"},

  398. {"pass1", "use internal 2pass ratecontrol in first  pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS1, INT_MIN, INT_MAX, 0, "flags"},

  399. {"pass2", "use internal 2pass ratecontrol in second pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS2, INT_MIN, INT_MAX, 0, "flags"},

  400. {"extern_huff", "use external huffman table (for mjpeg)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EXTERN_HUFF, INT_MIN, INT_MAX, 0, "flags"},

  401. {"gray", "only decode/encode grayscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GRAY, INT_MIN, INT_MAX, V|E|D, "flags"},

  402. {"emu_edge", "don't draw edges", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EMU_EDGE, INT_MIN, INT_MAX, 0, "flags"},

  403. {"psnr", "error[?] variables will be set during encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PSNR, INT_MIN, INT_MAX, V|E, "flags"},

  404. {"truncated", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRUNCATED, INT_MIN, INT_MAX, 0, "flags"},

  405. {"naq", "normalize adaptive quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_NORMALIZE_AQP, INT_MIN, INT_MAX, V|E, "flags"},

  406. {"ildct", "use interlaced dct", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_DCT, INT_MIN, INT_MAX, V|E, "flags"},

  407. {"low_delay", "force low delay", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOW_DELAY, INT_MIN, INT_MAX, V|D|E, "flags"},

  408. {"alt", "enable alternate scantable (mpeg2/mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_ALT_SCAN, INT_MIN, INT_MAX, V|E, "flags"},

  409. #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)

  410. {"trell", "use trellis quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRELLIS_QUANT, INT_MIN, INT_MAX, V|E, "flags"},

  411. #endif

  412. {"global_header", "place global headers in extradata instead of every keyframe", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GLOBAL_HEADER, INT_MIN, INT_MAX, V|A|E, "flags"},

  413. {"bitexact", "use only bitexact stuff (except (i)dct)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_BITEXACT, INT_MIN, INT_MAX, A|V|S|D|E, "flags"},

  414. {"aic", "h263 advanced intra coding / mpeg4 ac prediction", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_AC_PRED, INT_MIN, INT_MAX, V|E, "flags"},

  415. {"umv", "use unlimited motion vectors", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_UMV, INT_MIN, INT_MAX, V|E, "flags"},

  416. {"cbp", "use rate distortion optimization for cbp", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CBP_RD, INT_MIN, INT_MAX, V|E, "flags"},

  417. {"qprd", "use rate distortion optimization for qp selection", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QP_RD, INT_MIN, INT_MAX, V|E, "flags"},

  418. {"aiv", "h263 alternative inter vlc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_AIV, INT_MIN, INT_MAX, V|E, "flags"},

  419. {"slice", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_SLICE_STRUCT, INT_MIN, INT_MAX, V|E, "flags"},

  420. {"ilme", "interlaced motion estimation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_ME, INT_MIN, INT_MAX, V|E, "flags"},

  421. {"scan_offset", "will reserve space for svcd scan offset user data", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_SVCD_SCAN_OFFSET, INT_MIN, INT_MAX, V|E, "flags"},

  422. {"cgop", "closed gop", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CLOSED_GOP, INT_MIN, INT_MAX, V|E, "flags"},

  423. {"fast", "allow non spec compliant speedup tricks", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FAST, INT_MIN, INT_MAX, V|E, "flags2"},

  424. {"sgop", "strictly enforce gop size", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_STRICT_GOP, INT_MIN, INT_MAX, V|E, "flags2"},

  425. {"noout", "skip bitstream encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NO_OUTPUT, INT_MIN, INT_MAX, V|E, "flags2"},

  426. {"local_header", "place global headers at every keyframe instead of in extradata", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_LOCAL_HEADER, INT_MIN, INT_MAX, V|E, "flags2"},

  427. {"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  428. {"me_method", "set motion estimation method", OFFSET(me_method), FF_OPT_TYPE_INT, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method"},

  429. #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)

  430. {"me", "set motion estimation method (deprecated, use me_method instead)", OFFSET(me_method), FF_OPT_TYPE_INT, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method"},

  431. #endif

  432. {"zero", "zero motion estimation (fastest)", 0, FF_OPT_TYPE_CONST, ME_ZERO, INT_MIN, INT_MAX, V|E, "me_method" },

  433. {"full", "full motion estimation (slowest)", 0, FF_OPT_TYPE_CONST, ME_FULL, INT_MIN, INT_MAX, V|E, "me_method" },

  434. {"epzs", "EPZS motion estimation (default)", 0, FF_OPT_TYPE_CONST, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method" },

  435. {"esa", "esa motion estimation (alias for full)", 0, FF_OPT_TYPE_CONST, ME_FULL, INT_MIN, INT_MAX, V|E, "me_method" },

  436. {"tesa", "tesa motion estimation", 0, FF_OPT_TYPE_CONST, ME_TESA, INT_MIN, INT_MAX, V|E, "me_method" },

  437. {"dia", "dia motion estimation (alias for epzs)", 0, FF_OPT_TYPE_CONST, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method" },

  438. {"log", "log motion estimation", 0, FF_OPT_TYPE_CONST, ME_LOG, INT_MIN, INT_MAX, V|E, "me_method" },

  439. {"phods", "phods motion estimation", 0, FF_OPT_TYPE_CONST, ME_PHODS, INT_MIN, INT_MAX, V|E, "me_method" },

  440. {"x1", "X1 motion estimation", 0, FF_OPT_TYPE_CONST, ME_X1, INT_MIN, INT_MAX, V|E, "me_method" },

  441. {"hex", "hex motion estimation", 0, FF_OPT_TYPE_CONST, ME_HEX, INT_MIN, INT_MAX, V|E, "me_method" },

  442. {"umh", "umh motion estimation", 0, FF_OPT_TYPE_CONST, ME_UMH, INT_MIN, INT_MAX, V|E, "me_method" },

  443. {"iter", "iter motion estimation", 0, FF_OPT_TYPE_CONST, ME_ITER, INT_MIN, INT_MAX, V|E, "me_method" },

  444. {"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  445. {"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},

  446. {"g", "set the group of picture size", OFFSET(gop_size), FF_OPT_TYPE_INT, 12, INT_MIN, INT_MAX, V|E},

  447. {"rate_emu", "frame rate emulation", OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  448. {"ar", "set audio sampling rate (in Hz)", OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  449. {"ac", "set number of audio channels", OFFSET(channels), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  450. {"cutoff", "set cutoff bandwidth", OFFSET(cutoff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},

  451. {"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},

  452. {"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  453. {"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  454. {"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  455. {"qcomp", "video quantizer scale compression (VBR)", OFFSET(qcompress), FF_OPT_TYPE_FLOAT, 0.5, -FLT_MAX, FLT_MAX, V|E},

  456. {"qblur", "video quantizer scale blur (VBR)", OFFSET(qblur), FF_OPT_TYPE_FLOAT, 0.5, 0, FLT_MAX, V|E},

  457. {"qmin", "min video quantizer scale (VBR)", OFFSET(qmin), FF_OPT_TYPE_INT, 2, 1, 51, V|E},

  458. {"qmax", "max video quantizer scale (VBR)", OFFSET(qmax), FF_OPT_TYPE_INT, 31, 1, 51, V|E},

  459. {"qdiff", "max difference between the quantizer scale (VBR)", OFFSET(max_qdiff), FF_OPT_TYPE_INT, 3, INT_MIN, INT_MAX, V|E},

  460. {"bf", "use 'frames' B frames", OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, 0, FF_MAX_B_FRAMES, V|E},

  461. {"b_qfactor", "qp factor between p and b frames", OFFSET(b_quant_factor), FF_OPT_TYPE_FLOAT, 1.25, -FLT_MAX, FLT_MAX, V|E},

  462. {"rc_strategy", "ratecontrol method", OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  463. {"b_strategy", "strategy to choose between I/P/B-frames", OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},

  464. {"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},

  465. #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)

  466. {"rtp_mode", NULL, OFFSET(rtp_mode), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  467. #endif

  468. {"ps", "rtp payload size in bits", OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  469. {"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  470. {"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  471. {"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  472. {"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  473. {"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  474. {"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  475. {"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  476. {"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  477. {"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  478. {"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  479. {"bug", "workaround not auto detected encoder bugs", OFFSET(workaround_bugs), FF_OPT_TYPE_FLAGS, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},

  480. {"autodetect", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},

  481. {"old_msmpeg4", "some old lavc generated msmpeg4v3 files (no autodetection)", 0, FF_OPT_TYPE_CONST, FF_BUG_OLD_MSMPEG4, INT_MIN, INT_MAX, V|D, "bug"},

  482. {"xvid_ilace", "Xvid interlacing bug (autodetected if fourcc==XVIX)", 0, FF_OPT_TYPE_CONST, FF_BUG_XVID_ILACE, INT_MIN, INT_MAX, V|D, "bug"},

  483. {"ump4", "(autodetected if fourcc==UMP4)", 0, FF_OPT_TYPE_CONST, FF_BUG_UMP4, INT_MIN, INT_MAX, V|D, "bug"},

  484. {"no_padding", "padding bug (autodetected)", 0, FF_OPT_TYPE_CONST, FF_BUG_NO_PADDING, INT_MIN, INT_MAX, V|D, "bug"},

  485. {"amv", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AMV, INT_MIN, INT_MAX, V|D, "bug"},

  486. {"ac_vlc", "illegal vlc bug (autodetected per fourcc)", 0, FF_OPT_TYPE_CONST, FF_BUG_AC_VLC, INT_MIN, INT_MAX, V|D, "bug"},

  487. {"qpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},

  488. {"std_qpel", "old standard qpel (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, FF_BUG_STD_QPEL, INT_MIN, INT_MAX, V|D, "bug"},

  489. {"qpel_chroma2", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA2, INT_MIN, INT_MAX, V|D, "bug"},

  490. {"direct_blocksize", "direct-qpel-blocksize bug (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, FF_BUG_DIRECT_BLOCKSIZE, INT_MIN, INT_MAX, V|D, "bug"},

  491. {"edge", "edge padding bug (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, FF_BUG_EDGE, INT_MIN, INT_MAX, V|D, "bug"},

  492. {"hpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_HPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},

  493. {"dc_clip", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DC_CLIP, INT_MIN, INT_MAX, V|D, "bug"},

  494. {"ms", "workaround various bugs in microsofts broken decoders", 0, FF_OPT_TYPE_CONST, FF_BUG_MS, INT_MIN, INT_MAX, V|D, "bug"},

  495. {"lelim", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)", OFFSET(luma_elim_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  496. {"celim", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)", OFFSET(chroma_elim_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  497. {"strict", "how strictly to follow the standards", OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|V|D|E, "strict"},

  498. {"very", "strictly conform to a older more strict version of the spec or reference software", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_VERY_STRICT, INT_MIN, INT_MAX, V|D|E, "strict"},

  499. {"strict", "strictly conform to all the things in the spec no matter what consequences", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_STRICT, INT_MIN, INT_MAX, V|D|E, "strict"},

  500. {"normal", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_NORMAL, INT_MIN, INT_MAX, V|D|E, "strict"},

  501. {"inofficial", "allow inofficial extensions", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_INOFFICIAL, INT_MIN, INT_MAX, V|D|E, "strict"},

  502. {"experimental", "allow non standardized experimental things", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|D|E, "strict"},

  503. {"b_qoffset", "qp offset between P and B frames", OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, 1.25, -FLT_MAX, FLT_MAX, V|E},

  504. {"er", "set error resilience strategy", OFFSET(error_resilience), FF_OPT_TYPE_INT, FF_ER_CAREFUL, INT_MIN, INT_MAX, A|V|D, "er"},

  505. {"careful", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},

  506. {"compliant", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_COMPLIANT, INT_MIN, INT_MAX, V|D, "er"},

  507. {"aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},

  508. {"very_aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_VERY_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},

  509. {"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  510. {"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  511. {"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  512. {"mpeg_quant", "use MPEG quantizers instead of H.263", OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  513. {"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},

  514. {"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},

  515. {"qsquish", "how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)", OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, 0, 99, V|E},

  516. {"rc_qmod_amp", "experimental quantizer modulation", OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},

  517. {"rc_qmod_freq", "experimental quantizer modulation", OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  518. {"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  519. {"rc_eq", "set rate control equation", OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX, V|E},

  520. {"maxrate", "set max video bitrate tolerance (in bits/s)", OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  521. {"minrate", "set min video bitrate tolerance (in bits/s)", OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  522. {"bufsize", "set ratecontrol buffer size (in bits)", OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|V|E},

  523. {"rc_buf_aggressivity", "currently useless", OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, 1.0, -FLT_MAX, FLT_MAX, V|E},

  524. {"i_qfactor", "qp factor between P and I frames", OFFSET(i_quant_factor), FF_OPT_TYPE_FLOAT, -0.8, -FLT_MAX, FLT_MAX, V|E},

  525. {"i_qoffset", "qp offset between P and I frames", OFFSET(i_quant_offset), FF_OPT_TYPE_FLOAT, 0.0, -FLT_MAX, FLT_MAX, V|E},

  526. {"rc_init_cplx", "initial complexity for 1-pass encoding", OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},

  527. {"dct", "DCT algorithm", OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E, "dct"},

  528. {"auto", "autoselect a good one (default)", 0, FF_OPT_TYPE_CONST, FF_DCT_AUTO, INT_MIN, INT_MAX, V|E, "dct"},

  529. {"fastint", "fast integer", 0, FF_OPT_TYPE_CONST, FF_DCT_FASTINT, INT_MIN, INT_MAX, V|E, "dct"},

  530. {"int", "accurate integer", 0, FF_OPT_TYPE_CONST, FF_DCT_INT, INT_MIN, INT_MAX, V|E, "dct"},

  531. {"mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MMX, INT_MIN, INT_MAX, V|E, "dct"},

  532. {"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MLIB, INT_MIN, INT_MAX, V|E, "dct"},

  533. {"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_ALTIVEC, INT_MIN, INT_MAX, V|E, "dct"},

  534. {"faan", "floating point AAN DCT", 0, FF_OPT_TYPE_CONST, FF_DCT_FAAN, INT_MIN, INT_MAX, V|E, "dct"},

  535. {"lumi_mask", "compresses bright areas stronger than medium ones", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},

  536. {"tcplx_mask", "temporal complexity masking", OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},

  537. {"scplx_mask", "spatial complexity masking", OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},

  538. {"p_mask", "inter masking", OFFSET(p_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},

  539. {"dark_mask", "compresses dark areas stronger than medium ones", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},

  540. {"unused", NULL, OFFSET(unused), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  541. {"idct", "select IDCT implementation", OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E|D, "idct"},

  542. {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_AUTO, INT_MIN, INT_MAX, V|E|D, "idct"},

  543. {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_INT, INT_MIN, INT_MAX, V|E|D, "idct"},

  544. {"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLE, INT_MIN, INT_MAX, V|E|D, "idct"},

  545. {"simplemmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEMMX, INT_MIN, INT_MAX, V|E|D, "idct"},

  546. {"libmpeg2mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_LIBMPEG2MMX, INT_MIN, INT_MAX, V|E|D, "idct"},

  547. {"ps2", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_PS2, INT_MIN, INT_MAX, V|E|D, "idct"},

  548. {"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_MLIB, INT_MIN, INT_MAX, V|E|D, "idct"},

  549. {"arm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ARM, INT_MIN, INT_MAX, V|E|D, "idct"},

  550. {"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ALTIVEC, INT_MIN, INT_MAX, V|E|D, "idct"},

  551. {"sh4", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SH4, INT_MIN, INT_MAX, V|E|D, "idct"},

  552. {"simplearm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARM, INT_MIN, INT_MAX, V|E|D, "idct"},

  553. {"simplearmv5te", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARMV5TE, INT_MIN, INT_MAX, V|E|D, "idct"},

  554. {"simplearmv6", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARMV6, INT_MIN, INT_MAX, V|E|D, "idct"},

  555. {"h264", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_H264, INT_MIN, INT_MAX, V|E|D, "idct"},

  556. {"vp3", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_VP3, INT_MIN, INT_MAX, V|E|D, "idct"},

  557. {"ipp", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_IPP, INT_MIN, INT_MAX, V|E|D, "idct"},

  558. {"xvidmmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_XVIDMMX, INT_MIN, INT_MAX, V|E|D, "idct"},

  559. {"faani", "floating point AAN IDCT", 0, FF_OPT_TYPE_CONST, FF_IDCT_FAAN, INT_MIN, INT_MAX, V|D|E, "idct"},

  560. {"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  561. {"ec", "set error concealment strategy", OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, 3, INT_MIN, INT_MAX, V|D, "ec"},

  562. {"guess_mvs", "iterative motion vector (MV) search (slow)", 0, FF_OPT_TYPE_CONST, FF_EC_GUESS_MVS, INT_MIN, INT_MAX, V|D, "ec"},

  563. {"deblock", "use strong deblock filter for damaged MBs", 0, FF_OPT_TYPE_CONST, FF_EC_DEBLOCK, INT_MIN, INT_MAX, V|D, "ec"},

  564. {"bits_per_sample", NULL, OFFSET(bits_per_sample), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  565. {"pred", "prediction method", OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "pred"},

  566. {"left", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_LEFT, INT_MIN, INT_MAX, V|E, "pred"},

  567. {"plane", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_PLANE, INT_MIN, INT_MAX, V|E, "pred"},

  568. {"median", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_MEDIAN, INT_MIN, INT_MAX, V|E, "pred"},

  569. {"aspect", "sample aspect ratio", OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, 0, 10, V|E},

  570. {"debug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, DEFAULT, 0, INT_MAX, V|A|S|E|D, "debug"},

  571. {"pict", "picture info", 0, FF_OPT_TYPE_CONST, FF_DEBUG_PICT_INFO, INT_MIN, INT_MAX, V|D, "debug"},

  572. {"rc", "rate control", 0, FF_OPT_TYPE_CONST, FF_DEBUG_RC, INT_MIN, INT_MAX, V|E, "debug"},

  573. {"bitstream", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BITSTREAM, INT_MIN, INT_MAX, V|D, "debug"},

  574. {"mb_type", "macroblock (MB) type", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},

  575. {"qp", "per-block quantization parameter (QP)", 0, FF_OPT_TYPE_CONST, FF_DEBUG_QP, INT_MIN, INT_MAX, V|D, "debug"},

  576. {"mv", "motion vector", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MV, INT_MIN, INT_MAX, V|D, "debug"},

  577. {"dct_coeff", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_DCT_COEFF, INT_MIN, INT_MAX, V|D, "debug"},

  578. {"skip", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_SKIP, INT_MIN, INT_MAX, V|D, "debug"},

  579. {"startcode", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_STARTCODE, INT_MIN, INT_MAX, V|D, "debug"},

  580. {"pts", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PTS, INT_MIN, INT_MAX, V|D, "debug"},

  581. {"er", "error resilience", 0, FF_OPT_TYPE_CONST, FF_DEBUG_ER, INT_MIN, INT_MAX, V|D, "debug"},

  582. {"mmco", "memory management control operations (H.264)", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MMCO, INT_MIN, INT_MAX, V|D, "debug"},

  583. {"bugs", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BUGS, INT_MIN, INT_MAX, V|D, "debug"},

  584. {"vis_qp", "visualize quantization parameter (QP), lower QP are tinted greener", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_QP, INT_MIN, INT_MAX, V|D, "debug"},

  585. {"vis_mb_type", "visualize block types", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},

  586. {"buffers", "picture buffer allocations", 0, FF_OPT_TYPE_CONST, FF_DEBUG_BUFFERS, INT_MIN, INT_MAX, V|D, "debug"},

  587. {"vismv", "visualize motion vectors (MVs)", OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|D, "debug_mv"},

  588. {"pf", "forward predicted MVs of P-frames", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_P_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},

  589. {"bf", "forward predicted MVs of B-frames", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},

  590. {"bb", "backward predicted MVs of B-frames", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_BACK, INT_MIN, INT_MAX, V|D, "debug_mv"},

  591. {"mb_qmin", "obsolete, use qmin", OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  592. {"mb_qmax", "obsolete, use qmax", OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  593. {"cmp", "full pel me compare function", OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},

  594. {"subcmp", "sub pel me compare function", OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},

  595. {"mbcmp", "macroblock compare function", OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},

  596. {"ildctcmp", "interlaced dct compare function", OFFSET(ildct_cmp), FF_OPT_TYPE_INT, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},

  597. {"dia_size", "diamond type & size for motion estimation", OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  598. {"last_pred", "amount of motion predictors from the previous frame", OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  599. {"preme", "pre motion estimation", OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  600. {"precmp", "pre motion estimation compare function", OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},

  601. {"sad", "sum of absolute differences, fast (default)", 0, FF_OPT_TYPE_CONST, FF_CMP_SAD, INT_MIN, INT_MAX, V|E, "cmp_func"},

  602. {"sse", "sum of squared errors", 0, FF_OPT_TYPE_CONST, FF_CMP_SSE, INT_MIN, INT_MAX, V|E, "cmp_func"},

  603. {"satd", "sum of absolute Hadamard transformed differences", 0, FF_OPT_TYPE_CONST, FF_CMP_SATD, INT_MIN, INT_MAX, V|E, "cmp_func"},

  604. {"dct", "sum of absolute DCT transformed differences", 0, FF_OPT_TYPE_CONST, FF_CMP_DCT, INT_MIN, INT_MAX, V|E, "cmp_func"},

  605. {"psnr", "sum of squared quantization errors (avoid, low quality)", 0, FF_OPT_TYPE_CONST, FF_CMP_PSNR, INT_MIN, INT_MAX, V|E, "cmp_func"},

  606. {"bit", "number of bits needed for the block", 0, FF_OPT_TYPE_CONST, FF_CMP_BIT, INT_MIN, INT_MAX, V|E, "cmp_func"},

  607. {"rd", "rate distortion optimal, slow", 0, FF_OPT_TYPE_CONST, FF_CMP_RD, INT_MIN, INT_MAX, V|E, "cmp_func"},

  608. {"zero", "0", 0, FF_OPT_TYPE_CONST, FF_CMP_ZERO, INT_MIN, INT_MAX, V|E, "cmp_func"},

  609. {"vsad", "sum of absolute vertical differences", 0, FF_OPT_TYPE_CONST, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},

  610. {"vsse","sum of squared vertical differences", 0, FF_OPT_TYPE_CONST, FF_CMP_VSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},

  611. {"nsse", "noise preserving sum of squared differences", 0, FF_OPT_TYPE_CONST, FF_CMP_NSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},

  612. #ifdef CONFIG_SNOW_ENCODER

  613. {"w53", "5/3 wavelet, only used in snow", 0, FF_OPT_TYPE_CONST, FF_CMP_W53, INT_MIN, INT_MAX, V|E, "cmp_func"},

  614. {"w97", "9/7 wavelet, only used in snow", 0, FF_OPT_TYPE_CONST, FF_CMP_W97, INT_MIN, INT_MAX, V|E, "cmp_func"},

  615. #endif

  616. {"dctmax", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},

  617. {"chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_CHROMA, INT_MIN, INT_MAX, V|E, "cmp_func"},

  618. {"pre_dia_size", "diamond type & size for motion estimation pre-pass", OFFSET(pre_dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  619. {"subq", "sub pel motion estimation quality", OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},

  620. {"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  621. {"me_range", "limit motion vectors range (1023 for DivX player)", OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  622. {"ibias", "intra quant bias", OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},

  623. {"pbias", "inter quant bias", OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},

  624. {"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  625. {"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  626. {"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  627. {"coder", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "coder"},

  628. {"vlc", "variable length coder / huffman coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_VLC, INT_MIN, INT_MAX, V|E, "coder"},

  629. {"ac", "arithmetic coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_AC, INT_MIN, INT_MAX, V|E, "coder"},

  630. {"raw", "raw (no encoding)", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_RAW, INT_MIN, INT_MAX, V|E, "coder"},

  631. {"rle", "run-length coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_RLE, INT_MIN, INT_MAX, V|E, "coder"},

  632. {"deflate", "deflate-based coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_DEFLATE, INT_MIN, INT_MAX, V|E, "coder"},

  633. {"context", "context model", OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  634. {"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  635. {"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  636. {"mbd", "macroblock decision algorithm (high quality mode)", OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "mbd"},

  637. {"simple", "use mbcmp (default)", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_SIMPLE, INT_MIN, INT_MAX, V|E, "mbd"},

  638. {"bits", "use fewest bits", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_BITS, INT_MIN, INT_MAX, V|E, "mbd"},

  639. {"rd", "use best rate distortion", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_RD, INT_MIN, INT_MAX, V|E, "mbd"},

  640. {"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  641. {"sc_threshold", "scene change threshold", OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  642. {"lmin", "min lagrange factor (VBR)", OFFSET(lmin), FF_OPT_TYPE_INT,  2*FF_QP2LAMBDA, 0, INT_MAX, V|E},

  643. {"lmax", "max lagrange factor (VBR)", OFFSET(lmax), FF_OPT_TYPE_INT, 31*FF_QP2LAMBDA, 0, INT_MAX, V|E},

  644. {"nr", "noise reduction", OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  645. {"rc_init_occupancy", "number of bits which should be loaded into the rc buffer before decoding starts", OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  646. {"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  647. {"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_FLAGS, CODEC_FLAG2_FASTPSKIP|CODEC_FLAG2_BIT_RESERVOIR, 0, UINT_MAX, V|A|E|D, "flags2"},

  648. {"error", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  649. {"antialias", "MP3 antialias algorithm", OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "aa"},

  650. {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_AUTO, INT_MIN, INT_MAX, V|D, "aa"},

  651. {"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FASTINT, INT_MIN, INT_MAX, V|D, "aa"},

  652. {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_INT, INT_MIN, INT_MAX, V|D, "aa"},

  653. {"float", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FLOAT, INT_MIN, INT_MAX, V|D, "aa"},

  654. {"qns", "quantizer noise shaping", OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  655. {"threads", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E|D},

  656. {"me_threshold", "motion estimaton threshold", OFFSET(me_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  657. {"mb_threshold", "macroblock threshold", OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  658. {"dc", "intra_dc_precision", OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},

  659. {"nssew", "nsse weight", OFFSET(nsse_weight), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},

  660. {"skip_top", "number of macroblock rows at the top which are skipped", OFFSET(skip_top), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},

  661. {"skip_bottom", "number of macroblock rows at the bottom which are skipped", OFFSET(skip_bottom), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},

  662. {"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},

  663. {"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},

  664. {"aac_main", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_MAIN, INT_MIN, INT_MAX, A|E, "profile"},

  665. {"aac_low", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_LOW, INT_MIN, INT_MAX, A|E, "profile"},

  666. {"aac_ssr", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_SSR, INT_MIN, INT_MAX, A|E, "profile"},

  667. {"aac_ltp", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_LTP, INT_MIN, INT_MAX, A|E, "profile"},

  668. {"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},

  669. {"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},

  670. {"lowres", "decode at 1= 1/2, 2=1/4, 3=1/8 resolutions", OFFSET(lowres), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|D},

  671. {"skip_threshold", "frame skip threshold", OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  672. {"skip_factor", "frame skip factor", OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  673. {"skip_exp", "frame skip exponent", OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  674. {"skipcmp", "frame skip compare function", OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},

  675. {"border_mask", "increases the quantizer for macroblocks close to borders", OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},

  676. {"mblmin", "min macroblock lagrange factor (VBR)", OFFSET(mb_lmin), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 2, 1, FF_LAMBDA_MAX, V|E},

  677. {"mblmax", "max macroblock lagrange factor (VBR)", OFFSET(mb_lmax), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 31, 1, FF_LAMBDA_MAX, V|E},

  678. {"mepc", "motion estimation bitrate penalty compensation (1.0 = 256)", OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, 256, INT_MIN, INT_MAX, V|E},

  679. {"skip_loop_filter", NULL, OFFSET(skip_loop_filter), FF_OPT_TYPE_INT, AVDISCARD_DEFAULT, INT_MIN, INT_MAX, V|D, "avdiscard"},

  680. {"skip_idct"       , NULL, OFFSET(skip_idct)       , FF_OPT_TYPE_INT, AVDISCARD_DEFAULT, INT_MIN, INT_MAX, V|D, "avdiscard"},

  681. {"skip_frame"      , NULL, OFFSET(skip_frame)      , FF_OPT_TYPE_INT, AVDISCARD_DEFAULT, INT_MIN, INT_MAX, V|D, "avdiscard"},

  682. {"none"            , NULL, 0, FF_OPT_TYPE_CONST, AVDISCARD_NONE   , INT_MIN, INT_MAX, V|D, "avdiscard"},

  683. {"default"         , NULL, 0, FF_OPT_TYPE_CONST, AVDISCARD_DEFAULT, INT_MIN, INT_MAX, V|D, "avdiscard"},

  684. {"noref"           , NULL, 0, FF_OPT_TYPE_CONST, AVDISCARD_NONREF , INT_MIN, INT_MAX, V|D, "avdiscard"},

  685. {"bidir"           , NULL, 0, FF_OPT_TYPE_CONST, AVDISCARD_BIDIR  , INT_MIN, INT_MAX, V|D, "avdiscard"},

  686. {"nokey"           , NULL, 0, FF_OPT_TYPE_CONST, AVDISCARD_NONKEY , INT_MIN, INT_MAX, V|D, "avdiscard"},

  687. {"all"             , NULL, 0, FF_OPT_TYPE_CONST, AVDISCARD_ALL    , INT_MIN, INT_MAX, V|D, "avdiscard"},

  688. {"bidir_refine", "refine the two motion vectors used in bidirectional macroblocks", OFFSET(bidir_refine), FF_OPT_TYPE_INT, DEFAULT, 0, 4, V|E},

  689. {"brd_scale", "downscales frames for dynamic B-frame decision", OFFSET(brd_scale), FF_OPT_TYPE_INT, DEFAULT, 0, 10, V|E},

  690. {"crf", "enables constant quality mode, and selects the quality (x264)", OFFSET(crf), FF_OPT_TYPE_FLOAT, DEFAULT, 0, 51, V|E},

  691. {"cqp", "constant quantization parameter rate control method", OFFSET(cqp), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, V|E},

  692. {"keyint_min", "minimum interval between IDR-frames (x264)", OFFSET(keyint_min), FF_OPT_TYPE_INT, 25, INT_MIN, INT_MAX, V|E},

  693. {"refs", "reference frames to consider for motion compensation (Snow)", OFFSET(refs), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E},

  694. {"chromaoffset", "chroma qp offset from luma", OFFSET(chromaoffset), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  695. {"bframebias", "influences how often B-frames are used", OFFSET(bframebias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  696. {"trellis", "rate-distortion optimal quantization", OFFSET(trellis), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},

  697. {"directpred", "direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)", OFFSET(directpred), FF_OPT_TYPE_INT, 2, INT_MIN, INT_MAX, V|E},

  698. {"bpyramid", "allows B-frames to be used as references for predicting", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BPYRAMID, INT_MIN, INT_MAX, V|E, "flags2"},

  699. {"wpred", "weighted biprediction for b-frames (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_WPRED, INT_MIN, INT_MAX, V|E, "flags2"},

  700. {"mixed_refs", "one reference per partition, as opposed to one reference per macroblock", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_MIXED_REFS, INT_MIN, INT_MAX, V|E, "flags2"},

  701. {"dct8x8", "high profile 8x8 transform (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_8X8DCT, INT_MIN, INT_MAX, V|E, "flags2"},

  702. {"fastpskip", "fast pskip (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|E, "flags2"},

  703. {"aud", "access unit delimiters (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_AUD, INT_MIN, INT_MAX, V|E, "flags2"},

  704. {"brdo", "b-frame rate-distortion optimization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BRDO, INT_MIN, INT_MAX, V|E, "flags2"},

  705. {"skiprd", "RD optimal MB level residual skipping", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_SKIP_RD, INT_MIN, INT_MAX, V|E, "flags2"},

  706. {"complexityblur", "reduce fluctuations in qp (before curve compression)", OFFSET(complexityblur), FF_OPT_TYPE_FLOAT, 20.0, FLT_MIN, FLT_MAX, V|E},

  707. {"deblockalpha", "in-loop deblocking filter alphac0 parameter", OFFSET(deblockalpha), FF_OPT_TYPE_INT, DEFAULT, -6, 6, V|E},

  708. {"deblockbeta", "in-loop deblocking filter beta parameter", OFFSET(deblockbeta), FF_OPT_TYPE_INT, DEFAULT, -6, 6, V|E},

  709. {"partitions", "macroblock subpartition sizes to consider", OFFSET(partitions), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|E, "partitions"},

  710. {"parti4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I4X4, INT_MIN, INT_MAX, V|E, "partitions"},

  711. {"parti8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I8X8, INT_MIN, INT_MAX, V|E, "partitions"},

  712. {"partp4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P4X4, INT_MIN, INT_MAX, V|E, "partitions"},

  713. {"partp8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P8X8, INT_MIN, INT_MAX, V|E, "partitions"},

  714. {"partb8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_B8X8, INT_MIN, INT_MAX, V|E, "partitions"},

  715. {"sc_factor", "multiplied by qscale for each frame and added to scene_change_score", OFFSET(scenechange_factor), FF_OPT_TYPE_INT, 6, 0, INT_MAX, V|E},

  716. {"mv0_threshold", NULL, OFFSET(mv0_threshold), FF_OPT_TYPE_INT, 256, 0, INT_MAX, V|E},

  717. {"ivlc", "intra vlc table", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_INTRA_VLC, INT_MIN, INT_MAX, V|E, "flags2"},

  718. {"b_sensitivity", "adjusts sensitivity of b_frame_strategy 1", OFFSET(b_sensitivity), FF_OPT_TYPE_INT, 40, 1, INT_MAX, V|E},

  719. {"compression_level", NULL, OFFSET(compression_level), FF_OPT_TYPE_INT, FF_COMPRESSION_DEFAULT, INT_MIN, INT_MAX, V|A|E},

  720. {"use_lpc", "sets whether to use LPC mode (FLAC)", OFFSET(use_lpc), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},

  721. {"lpc_coeff_precision", "LPC coefficient precision (FLAC)", OFFSET(lpc_coeff_precision), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|E},

  722. {"min_prediction_order", NULL, OFFSET(min_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},

  723. {"max_prediction_order", NULL, OFFSET(max_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},

  724. {"prediction_order_method", "search method for selecting prediction order", OFFSET(prediction_order_method), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},

  725. {"min_partition_order", NULL, OFFSET(min_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},

  726. {"max_partition_order", NULL, OFFSET(max_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},

  727. {"timecode_frame_start", "GOP timecode frame start number, in non drop frame format", OFFSET(timecode_frame_start), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|E},

  728. {"drop_frame_timecode", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_DROP_FRAME_TIMECODE, INT_MIN, INT_MAX, V|E, "flags2"},

  729. {"non_linear_q", "use non linear quantizer", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NON_LINEAR_QUANT, INT_MIN, INT_MAX, V|E, "flags2"},

  730. {"request_channels", "set desired number of audio channels", OFFSET(request_channels), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|D},

  731. {"drc_scale", "percentage of dynamic range compression to apply", OFFSET(drc_scale), FF_OPT_TYPE_FLOAT, 1.0, 0.0, 1.0, A|D},

  732. {"reservoir", "use bit reservoir", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BIT_RESERVOIR, INT_MIN, INT_MAX, A|E, "flags2"},

  733. {NULL},

  734. };

  735. 

  736. #undef A

  737. #undef V

  738. #undef S

  739. #undef E

  740. #undef D

  741. #undef DEFAULT

  742. 

  743. static const AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options };

  744. 

  745. void avcodec_get_context_defaults2(AVCodecContext *s, enum CodecType codec_type){

  746.     int flags=0;

  747.     memset(s, 0, sizeof(AVCodecContext));

  748. 

  749.     s->av_class= &av_codec_context_class;

  750. 

  751.     s->codec_type = codec_type;

  752.     if(codec_type == CODEC_TYPE_AUDIO)

  753.         flags= AV_OPT_FLAG_AUDIO_PARAM;

  754.     else if(codec_type == CODEC_TYPE_VIDEO)

  755.         flags= AV_OPT_FLAG_VIDEO_PARAM;

  756.     else if(codec_type == CODEC_TYPE_SUBTITLE)

  757.         flags= AV_OPT_FLAG_SUBTITLE_PARAM;

  758.     av_opt_set_defaults2(s, flags, flags);

  759. 

  760.     s->rc_eq= av_strdup("tex^qComp");

  761.     s->time_base= (AVRational){0,1};

  762.     s->get_buffer= avcodec_default_get_buffer;

  763.     s->release_buffer= avcodec_default_release_buffer;

  764.     s->get_format= avcodec_default_get_format;

  765.     s->execute= avcodec_default_execute;

  766.     s->sample_aspect_ratio= (AVRational){0,1};

  767.     s->pix_fmt= PIX_FMT_NONE;

  768.     s->sample_fmt= SAMPLE_FMT_S16; // FIXME: set to NONE

  769. 

  770.     s->palctrl = NULL;

  771.     s->reget_buffer= avcodec_default_reget_buffer;

  772. }

  773. 

  774. AVCodecContext *avcodec_alloc_context2(enum CodecType codec_type){

  775.     AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));

  776. 

  777.     if(avctx==NULL) return NULL;

  778. 

  779.     avcodec_get_context_defaults2(avctx, codec_type);

  780. 

  781.     return avctx;

  782. }

  783. 

  784. void avcodec_get_context_defaults(AVCodecContext *s){

  785.     avcodec_get_context_defaults2(s, CODEC_TYPE_UNKNOWN);

  786. }

  787. 

  788. AVCodecContext *avcodec_alloc_context(void){

  789.     return avcodec_alloc_context2(CODEC_TYPE_UNKNOWN);

  790. }

  791. 

  792. void avcodec_get_frame_defaults(AVFrame *pic){

  793.     memset(pic, 0, sizeof(AVFrame));

  794. 

  795.     pic->pts= AV_NOPTS_VALUE;

  796.     pic->key_frame= 1;

  797. }

  798. 

  799. AVFrame *avcodec_alloc_frame(void){

  800.     AVFrame *pic= av_malloc(sizeof(AVFrame));

  801. 

  802.     if(pic==NULL) return NULL;

  803. 

  804.     avcodec_get_frame_defaults(pic);

  805. 

  806.     return pic;

  807. }

  808. 

  809. int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)

  810. {

  811.     int ret= -1;

  812. 

  813.     entangled_thread_counter++;

  814.     if(entangled_thread_counter != 1){

  815.         av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");

  816.         goto end;

  817.     }

  818. 

  819.     if(avctx->codec || !codec)

  820.         goto end;

  821. 

  822.     if (codec->priv_data_size > 0) {

  823.         avctx->priv_data = av_mallocz(codec->priv_data_size);

  824.         if (!avctx->priv_data) {

  825.             ret = AVERROR(ENOMEM);

  826.             goto end;

  827.         }

  828.     } else {

  829.         avctx->priv_data = NULL;

  830.     }

  831. 

  832.     if(avctx->coded_width && avctx->coded_height)

  833.         avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);

  834.     else if(avctx->width && avctx->height)

  835.         avcodec_set_dimensions(avctx, avctx->width, avctx->height);

  836. 

  837.     if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){

  838.         av_freep(&avctx->priv_data);

  839.         ret = AVERROR(EINVAL);

  840.         goto end;

  841.     }

  842. 

  843.     avctx->codec = codec;

  844.     avctx->codec_id = codec->id;

  845.     avctx->frame_number = 0;

  846.     if(avctx->codec->init){

  847.         ret = avctx->codec->init(avctx);

  848.         if (ret < 0) {

  849.             av_freep(&avctx->priv_data);

  850.             avctx->codec= NULL;

  851.             goto end;

  852.         }

  853.     }

  854.     ret=0;

  855. end:

  856.     entangled_thread_counter--;

  857.     return ret;

  858. }

  859. 

  860. int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,

  861.                          const short *samples)

  862. {

  863.     if(buf_size < FF_MIN_BUFFER_SIZE && 0){

  864.         av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");

  865.         return -1;

  866.     }

  867.     if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){

  868.         int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);

  869.         avctx->frame_number++;

  870.         return ret;

  871.     }else

  872.         return 0;

  873. }

  874. 

  875. int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,

  876.                          const AVFrame *pict)

  877. {

  878.     if(buf_size < FF_MIN_BUFFER_SIZE){

  879.         av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");

  880.         return -1;

  881.     }

  882.     if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))

  883.         return -1;

  884.     if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){

  885.         int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);

  886.         avctx->frame_number++;

  887.         emms_c(); //needed to avoid an emms_c() call before every return;

  888. 

  889.         return ret;

  890.     }else

  891.         return 0;

  892. }

  893. 

  894. int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,

  895.                             const AVSubtitle *sub)

  896. {

  897.     int ret;

  898.     ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);

  899.     avctx->frame_number++;

  900.     return ret;

  901. }

  902. 

  903. int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,

  904.                          int *got_picture_ptr,

  905.                          const uint8_t *buf, int buf_size)

  906. {

  907.     int ret;

  908. 

  909.     *got_picture_ptr= 0;

  910.     if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))

  911.         return -1;

  912.     if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){

  913.         ret = avctx->codec->decode(avctx, picture, got_picture_ptr,

  914.                                 buf, buf_size);

  915. 

  916.         emms_c(); //needed to avoid an emms_c() call before every return;

  917. 

  918.         if (*got_picture_ptr)

  919.             avctx->frame_number++;

  920.     }else

  921.         ret= 0;

  922. 

  923.     return ret;

  924. }

  925. 

  926. int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,

  927.                          int *frame_size_ptr,

  928.                          const uint8_t *buf, int buf_size)

  929. {

  930.     int ret;

  931. 

  932.     if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){

  933.         //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough

  934.         if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){

  935.             av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");

  936.             return -1;

  937.         }

  938.         if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||

  939.         *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){

  940.             av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);

  941.             return -1;

  942.         }

  943. 

  944.         ret = avctx->codec->decode(avctx, samples, frame_size_ptr,

  945.                                 buf, buf_size);

  946.         avctx->frame_number++;

  947.     }else{

  948.         ret= 0;

  949.         *frame_size_ptr=0;

  950.     }

  951.     return ret;

  952. }

  953. 

  954. #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)

  955. int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,

  956.                          int *frame_size_ptr,

  957.                          const uint8_t *buf, int buf_size){

  958.     *frame_size_ptr= AVCODEC_MAX_AUDIO_FRAME_SIZE;

  959.     return avcodec_decode_audio2(avctx, samples, frame_size_ptr, buf, buf_size);

  960. }

  961. #endif

  962. 

  963. int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,

  964.                             int *got_sub_ptr,

  965.                             const uint8_t *buf, int buf_size)

  966. {

  967.     int ret;

  968. 

  969.     *got_sub_ptr = 0;

  970.     ret = avctx->codec->decode(avctx, sub, got_sub_ptr,

  971.                                buf, buf_size);

  972.     if (*got_sub_ptr)

  973.         avctx->frame_number++;

  974.     return ret;

  975. }

  976. 

  977. int avcodec_close(AVCodecContext *avctx)

  978. {

  979.     entangled_thread_counter++;

  980.     if(entangled_thread_counter != 1){

  981.         av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");

  982.         entangled_thread_counter--;

  983.         return -1;

  984.     }

  985. 

  986.     if (ENABLE_THREADS && avctx->thread_opaque)

  987.         avcodec_thread_free(avctx);

  988.     if (avctx->codec->close)

  989.         avctx->codec->close(avctx);

  990.     avcodec_default_free_buffers(avctx);

  991.     av_freep(&avctx->priv_data);

  992.     av_freep(&avctx->rc_eq);

  993.     avctx->codec = NULL;

  994.     entangled_thread_counter--;

  995.     return 0;

  996. }

  997. 

  998. AVCodec *avcodec_find_encoder(enum CodecID id)

  999. {

  1000.     AVCodec *p;

  1001.     p = first_avcodec;

  1002.     while (p) {

  1003.         if (p->encode != NULL && p->id == id)

  1004.             return p;

  1005.         p = p->next;

  1006.     }

  1007.     return NULL;

  1008. }

  1009. 

  1010. AVCodec *avcodec_find_encoder_by_name(const char *name)

  1011. {

  1012.     AVCodec *p;

  1013.     p = first_avcodec;

  1014.     while (p) {

  1015.         if (p->encode != NULL && strcmp(name,p->name) == 0)

  1016.             return p;

  1017.         p = p->next;

  1018.     }

  1019.     return NULL;

  1020. }

  1021. 

  1022. AVCodec *avcodec_find_decoder(enum CodecID id)

  1023. {

  1024.     AVCodec *p;

  1025.     p = first_avcodec;

  1026.     while (p) {

  1027.         if (p->decode != NULL && p->id == id)

  1028.             return p;

  1029.         p = p->next;

  1030.     }

  1031.     return NULL;

  1032. }

  1033. 

  1034. AVCodec *avcodec_find_decoder_by_name(const char *name)

  1035. {

  1036.     AVCodec *p;

  1037.     p = first_avcodec;

  1038.     while (p) {

  1039.         if (p->decode != NULL && strcmp(name,p->name) == 0)

  1040.             return p;

  1041.         p = p->next;

  1042.     }

  1043.     return NULL;

  1044. }

  1045. 

  1046. void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)

  1047. {

  1048.     const char *codec_name;

  1049.     AVCodec *p;

  1050.     char buf1[32];

  1051.     char channels_str[100];

  1052.     int bitrate;

  1053.     AVRational display_aspect_ratio;

  1054. 

  1055.     if (encode)

  1056.         p = avcodec_find_encoder(enc->codec_id);

  1057.     else

  1058.         p = avcodec_find_decoder(enc->codec_id);

  1059. 

  1060.     if (p) {

  1061.         codec_name = p->name;

  1062.         if (!encode && enc->codec_id == CODEC_ID_MP3) {

  1063.             if (enc->sub_id == 2)

  1064.                 codec_name = "mp2";

  1065.             else if (enc->sub_id == 1)

  1066.                 codec_name = "mp1";

  1067.         }

  1068.     } else if (enc->codec_id == CODEC_ID_MPEG2TS) {

  1069.         /* fake mpeg2 transport stream codec (currently not

  1070.            registered) */

  1071.         codec_name = "mpeg2ts";

  1072.     } else if (enc->codec_name[0] != '\0') {

  1073.         codec_name = enc->codec_name;

  1074.     } else {

  1075.         /* output avi tags */

  1076.         if(   isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)

  1077.            && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){

  1078.             snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",

  1079.                      enc->codec_tag & 0xff,

  1080.                      (enc->codec_tag >> 8) & 0xff,

  1081.                      (enc->codec_tag >> 16) & 0xff,

  1082.                      (enc->codec_tag >> 24) & 0xff,

  1083.                       enc->codec_tag);

  1084.         } else {

  1085.             snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);

  1086.         }

  1087.         codec_name = buf1;

  1088.     }

  1089. 

  1090.     switch(enc->codec_type) {

  1091.     case CODEC_TYPE_VIDEO:

  1092.         snprintf(buf, buf_size,

  1093.                  "Video: %s%s",

  1094.                  codec_name, enc->mb_decision ? " (hq)" : "");

  1095.         if (enc->pix_fmt != PIX_FMT_NONE) {

  1096.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1097.                      ", %s",

  1098.                      avcodec_get_pix_fmt_name(enc->pix_fmt));

  1099.         }

  1100.         if (enc->width) {

  1101.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1102.                      ", %dx%d",

  1103.                      enc->width, enc->height);

  1104.             if (enc->sample_aspect_ratio.num) {

  1105.                 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,

  1106.                           enc->width*enc->sample_aspect_ratio.num,

  1107.                           enc->height*enc->sample_aspect_ratio.den,

  1108.                           1024*1024);

  1109.                 snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1110.                          " [PAR %d:%d DAR %d:%d]",

  1111.                          enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,

  1112.                          display_aspect_ratio.num, display_aspect_ratio.den);

  1113.             }

  1114.             if(av_log_get_level() >= AV_LOG_DEBUG){

  1115.                 int g= ff_gcd(enc->time_base.num, enc->time_base.den);

  1116.                 snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1117.                      ", %d/%d",

  1118.                      enc->time_base.num/g, enc->time_base.den/g);

  1119.             }

  1120.         }

  1121.         if (encode) {

  1122.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1123.                      ", q=%d-%d", enc->qmin, enc->qmax);

  1124.         }

  1125.         bitrate = enc->bit_rate;

  1126.         break;

  1127.     case CODEC_TYPE_AUDIO:

  1128.         snprintf(buf, buf_size,

  1129.                  "Audio: %s",

  1130.                  codec_name);

  1131.         switch (enc->channels) {

  1132.             case 1:

  1133.                 strcpy(channels_str, "mono");

  1134.                 break;

  1135.             case 2:

  1136.                 strcpy(channels_str, "stereo");

  1137.                 break;

  1138.             case 6:

  1139.                 strcpy(channels_str, "5:1");

  1140.                 break;

  1141.             default:

  1142.                 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);

  1143.                 break;

  1144.         }

  1145.         if (enc->sample_rate) {

  1146.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1147.                      ", %d Hz, %s",

  1148.                      enc->sample_rate,

  1149.                      channels_str);

  1150.         }

  1151. 

  1152.         /* for PCM codecs, compute bitrate directly */

  1153.         switch(enc->codec_id) {

  1154.         case CODEC_ID_PCM_S32LE:

  1155.         case CODEC_ID_PCM_S32BE:

  1156.         case CODEC_ID_PCM_U32LE:

  1157.         case CODEC_ID_PCM_U32BE:

  1158.         case CODEC_ID_PCM_F32BE:

  1159.             bitrate = enc->sample_rate * enc->channels * 32;

  1160.             break;

  1161.         case CODEC_ID_PCM_S24LE:

  1162.         case CODEC_ID_PCM_S24BE:

  1163.         case CODEC_ID_PCM_U24LE:

  1164.         case CODEC_ID_PCM_U24BE:

  1165.         case CODEC_ID_PCM_S24DAUD:

  1166.             bitrate = enc->sample_rate * enc->channels * 24;

  1167.             break;

  1168.         case CODEC_ID_PCM_S16LE:

  1169.         case CODEC_ID_PCM_S16BE:

  1170.         case CODEC_ID_PCM_S16LE_PLANAR:

  1171.         case CODEC_ID_PCM_U16LE:

  1172.         case CODEC_ID_PCM_U16BE:

  1173.             bitrate = enc->sample_rate * enc->channels * 16;

  1174.             break;

  1175.         case CODEC_ID_PCM_S8:

  1176.         case CODEC_ID_PCM_U8:

  1177.         case CODEC_ID_PCM_ALAW:

  1178.         case CODEC_ID_PCM_MULAW:

  1179.             bitrate = enc->sample_rate * enc->channels * 8;

  1180.             break;

  1181.         default:

  1182.             bitrate = enc->bit_rate;

  1183.             break;

  1184.         }

  1185.         break;

  1186.     case CODEC_TYPE_DATA:

  1187.         snprintf(buf, buf_size, "Data: %s", codec_name);

  1188.         bitrate = enc->bit_rate;

  1189.         break;

  1190.     case CODEC_TYPE_SUBTITLE:

  1191.         snprintf(buf, buf_size, "Subtitle: %s", codec_name);

  1192.         bitrate = enc->bit_rate;

  1193.         break;

  1194.     case CODEC_TYPE_ATTACHMENT:

  1195.         snprintf(buf, buf_size, "Attachment: %s", codec_name);

  1196.         bitrate = enc->bit_rate;

  1197.         break;

  1198.     default:

  1199.         snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);

  1200.         return;

  1201.     }

  1202.     if (encode) {

  1203.         if (enc->flags & CODEC_FLAG_PASS1)

  1204.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1205.                      ", pass 1");

  1206.         if (enc->flags & CODEC_FLAG_PASS2)

  1207.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1208.                      ", pass 2");

  1209.     }

  1210.     if (bitrate != 0) {

  1211.         snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1212.                  ", %d kb/s", bitrate / 1000);

  1213.     }

  1214. }

  1215. 

  1216. unsigned avcodec_version( void )

  1217. {

  1218.   return LIBAVCODEC_VERSION_INT;

  1219. }

  1220. 

  1221. #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)

  1222. unsigned avcodec_build( void )

  1223. {

  1224.   return LIBAVCODEC_BUILD;

  1225. }

  1226. #endif

  1227. 

  1228. void avcodec_init(void)

  1229. {

  1230.     static int initialized = 0;

  1231. 

  1232.     if (initialized != 0)

  1233.         return;

  1234.     initialized = 1;

  1235. 

  1236.     dsputil_static_init();

  1237. }

  1238. 

  1239. void avcodec_flush_buffers(AVCodecContext *avctx)

  1240. {

  1241.     if(avctx->codec->flush)

  1242.         avctx->codec->flush(avctx);

  1243. }

  1244. 

  1245. void avcodec_default_free_buffers(AVCodecContext *s){

  1246.     int i, j;

  1247. 

  1248.     if(s->internal_buffer==NULL) return;

  1249. 

  1250.     for(i=0; i<INTERNAL_BUFFER_SIZE; i++){

  1251.         InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];

  1252.         for(j=0; j<4; j++){

  1253.             av_freep(&buf->base[j]);

  1254.             buf->data[j]= NULL;

  1255.         }

  1256.     }

  1257.     av_freep(&s->internal_buffer);

  1258. 

  1259.     s->internal_buffer_count=0;

  1260. }

  1261. 

  1262. char av_get_pict_type_char(int pict_type){

  1263.     switch(pict_type){

  1264.     case FF_I_TYPE: return 'I';

  1265.     case FF_P_TYPE: return 'P';

  1266.     case FF_B_TYPE: return 'B';

  1267.     case FF_S_TYPE: return 'S';

  1268.     case FF_SI_TYPE:return 'i';

  1269.     case FF_SP_TYPE:return 'p';

  1270.     case FF_BI_TYPE:return 'b';

  1271.     default:        return '?';

  1272.     }

  1273. }

  1274. 

  1275. int av_get_bits_per_sample(enum CodecID codec_id){

  1276.     switch(codec_id){

  1277.     case CODEC_ID_ADPCM_SBPRO_2:

  1278.         return 2;

  1279.     case CODEC_ID_ADPCM_SBPRO_3:

  1280.         return 3;

  1281.     case CODEC_ID_ADPCM_SBPRO_4:

  1282.     case CODEC_ID_ADPCM_CT:

  1283.         return 4;

  1284.     case CODEC_ID_PCM_ALAW:

  1285.     case CODEC_ID_PCM_MULAW:

  1286.     case CODEC_ID_PCM_S8:

  1287.     case CODEC_ID_PCM_U8:

  1288.         return 8;

  1289.     case CODEC_ID_PCM_S16BE:

  1290.     case CODEC_ID_PCM_S16LE:

  1291.     case CODEC_ID_PCM_S16LE_PLANAR:

  1292.     case CODEC_ID_PCM_U16BE:

  1293.     case CODEC_ID_PCM_U16LE:

  1294.         return 16;

  1295.     case CODEC_ID_PCM_S24DAUD:

  1296.     case CODEC_ID_PCM_S24BE:

  1297.     case CODEC_ID_PCM_S24LE:

  1298.     case CODEC_ID_PCM_U24BE:

  1299.     case CODEC_ID_PCM_U24LE:

  1300.         return 24;

  1301.     case CODEC_ID_PCM_S32BE:

  1302.     case CODEC_ID_PCM_S32LE:

  1303.     case CODEC_ID_PCM_U32BE:

  1304.     case CODEC_ID_PCM_U32LE:

  1305.     case CODEC_ID_PCM_F32BE:

  1306.         return 32;

  1307.     default:

  1308.         return 0;

  1309.     }

  1310. }

  1311. 

  1312. int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {

  1313.     switch (sample_fmt) {

  1314.     case SAMPLE_FMT_U8:

  1315.         return 8;

  1316.     case SAMPLE_FMT_S16:

  1317.         return 16;

  1318.     case SAMPLE_FMT_S24:

  1319.         return 24;

  1320.     case SAMPLE_FMT_S32:

  1321.     case SAMPLE_FMT_FLT:

  1322.         return 32;

  1323.     default:

  1324.         return 0;

  1325.     }

  1326. }

  1327. 

  1328. #if !defined(HAVE_THREADS)

  1329. int avcodec_thread_init(AVCodecContext *s, int thread_count){

  1330.     return -1;

  1331. }

  1332. #endif

  1333. 

  1334. unsigned int av_xiphlacing(unsigned char *s, unsigned int v)

  1335. {

  1336.     unsigned int n = 0;

  1337. 

  1338.     while(v >= 0xff) {

  1339.         *s++ = 0xff;

  1340.         v -= 0xff;

  1341.         n++;

  1342.     }

  1343.     *s = v;

  1344.     n++;

  1345.     return n;

  1346. }

  1347. 

  1348. /* Wrapper to work around the lack of mkstemp() on mingw/cygin.

  1349.  * Also, tries to create file in /tmp first, if possible.

  1350.  * *prefix can be a character constant; *filename will be allocated internally.

  1351.  * Returns file descriptor of opened file (or -1 on error)

  1352.  * and opened file name in **filename. */

  1353. int av_tempfile(char *prefix, char **filename) {

  1354.     int fd=-1;

  1355. #if !defined(HAVE_MKSTEMP)

  1356.     *filename = tempnam(".", prefix);

  1357. #else

  1358.     size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */

  1359.     *filename = av_malloc(len);

  1360. #endif

  1361.     /* -----common section-----*/

  1362.     if (*filename == NULL) {

  1363.         av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");

  1364.         return -1;

  1365.     }

  1366. #if !defined(HAVE_MKSTEMP)

  1367.     fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);

  1368. #else

  1369.     snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);

  1370.     fd = mkstemp(*filename);

  1371.     if (fd < 0) {

  1372.         snprintf(*filename, len, "./%sXXXXXX", prefix);

  1373.         fd = mkstemp(*filename);

  1374.     }

  1375. #endif

  1376.     /* -----common section-----*/

  1377.     if (fd < 0) {

  1378.         av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);

  1379.         return -1;

  1380.     }

  1381.     return fd; /* success */

  1382. }

  1383. 

  1384. typedef struct {

  1385.     const char *abbr;

  1386.     int width, height;

  1387. } VideoFrameSizeAbbr;

  1388. 

  1389. typedef struct {

  1390.     const char *abbr;

  1391.     int rate_num, rate_den;

  1392. } VideoFrameRateAbbr;

  1393. 

  1394. static const VideoFrameSizeAbbr video_frame_size_abbrs[] = {

  1395.     { "ntsc",      720, 480 },

  1396.     { "pal",       720, 576 },

  1397.     { "qntsc",     352, 240 }, /* VCD compliant NTSC */

  1398.     { "qpal",      352, 288 }, /* VCD compliant PAL */

  1399.     { "sntsc",     640, 480 }, /* square pixel NTSC */

  1400.     { "spal",      768, 576 }, /* square pixel PAL */

  1401.     { "film",      352, 240 },

  1402.     { "ntsc-film", 352, 240 },

  1403.     { "sqcif",     128,  96 },

  1404.     { "qcif",      176, 144 },

  1405.     { "cif",       352, 288 },

  1406.     { "4cif",      704, 576 },

  1407.     { "qqvga",     160, 120 },

  1408.     { "qvga",      320, 240 },

  1409.     { "vga",       640, 480 },

  1410.     { "svga",      800, 600 },

  1411.     { "xga",      1024, 768 },

  1412.     { "uxga",     1600,1200 },

  1413.     { "qxga",     2048,1536 },

  1414.     { "sxga",     1280,1024 },

  1415.     { "qsxga",    2560,2048 },

  1416.     { "hsxga",    5120,4096 },

  1417.     { "wvga",      852, 480 },

  1418.     { "wxga",     1366, 768 },

  1419.     { "wsxga",    1600,1024 },

  1420.     { "wuxga",    1920,1200 },

  1421.     { "woxga",    2560,1600 },

  1422.     { "wqsxga",   3200,2048 },

  1423.     { "wquxga",   3840,2400 },

  1424.     { "whsxga",   6400,4096 },

  1425.     { "whuxga",   7680,4800 },

  1426.     { "cga",       320, 200 },

  1427.     { "ega",       640, 350 },

  1428.     { "hd480",     852, 480 },

  1429.     { "hd720",    1280, 720 },

  1430.     { "hd1080",   1920,1080 },

  1431. };

  1432. 

  1433. static const VideoFrameRateAbbr video_frame_rate_abbrs[]= {

  1434.     { "ntsc",      30000, 1001 },

  1435.     { "pal",          25,    1 },

  1436.     { "qntsc",     30000, 1001 }, /* VCD compliant NTSC */

  1437.     { "qpal",         25,    1 }, /* VCD compliant PAL */

  1438.     { "sntsc",     30000, 1001 }, /* square pixel NTSC */

  1439.     { "spal",         25,    1 }, /* square pixel PAL */

  1440.     { "film",         24,    1 },

  1441.     { "ntsc-film", 24000, 1001 },

  1442. };

  1443. 

  1444. int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)

  1445. {

  1446.     int i;

  1447.     int n = sizeof(video_frame_size_abbrs) / sizeof(VideoFrameSizeAbbr);

  1448.     const char *p;

  1449.     int frame_width = 0, frame_height = 0;

  1450. 

  1451.     for(i=0;i<n;i++) {

  1452.         if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {

  1453.             frame_width = video_frame_size_abbrs[i].width;

  1454.             frame_height = video_frame_size_abbrs[i].height;

  1455.             break;

  1456.         }

  1457.     }

  1458.     if (i == n) {

  1459.         p = str;

  1460.         frame_width = strtol(p, (char **)&p, 10);

  1461.         if (*p)

  1462.             p++;

  1463.         frame_height = strtol(p, (char **)&p, 10);

  1464.     }

  1465.     if (frame_width <= 0 || frame_height <= 0)

  1466.         return -1;

  1467.     *width_ptr = frame_width;

  1468.     *height_ptr = frame_height;

  1469.     return 0;

  1470. }

  1471. 

  1472. int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)

  1473. {

  1474.     int i;

  1475.     int n = sizeof(video_frame_rate_abbrs) / sizeof(VideoFrameRateAbbr);

  1476.     char* cp;

  1477. 

  1478.     /* First, we check our abbreviation table */

  1479.     for (i = 0; i < n; ++i)

  1480.          if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {

  1481.              frame_rate->num = video_frame_rate_abbrs[i].rate_num;

  1482.              frame_rate->den = video_frame_rate_abbrs[i].rate_den;

  1483.              return 0;

  1484.          }

  1485. 

  1486.     /* Then, we try to parse it as fraction */

  1487.     cp = strchr(arg, '/');

  1488.     if (!cp)

  1489.         cp = strchr(arg, ':');

  1490.     if (cp) {

  1491.         char* cpp;

  1492.         frame_rate->num = strtol(arg, &cpp, 10);

  1493.         if (cpp != arg || cpp == cp)

  1494.             frame_rate->den = strtol(cp+1, &cpp, 10);

  1495.         else

  1496.            frame_rate->num = 0;

  1497.     }

  1498.     else {

  1499.         /* Finally we give up and parse it as double */

  1500.         AVRational time_base = av_d2q(strtod(arg, 0), DEFAULT_FRAME_RATE_BASE);

  1501.         frame_rate->den = time_base.den;

  1502.         frame_rate->num = time_base.num;

  1503.     }

  1504.     if (!frame_rate->num || !frame_rate->den)

  1505.         return -1;

  1506.     else

  1507.         return 0;

  1508. }