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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 "avcodec.h"

  29. #include "dsputil.h"

  30. #include "mpegvideo.h"

  31. #include "integer.h"

  32. #include "opt.h"

  33. #include "crc.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.     return av_realloc(ptr, *size);

  70. }

  71. 

  72. static unsigned int last_static = 0;

  73. static unsigned int allocated_static = 0;

  74. static void** array_static = NULL;

  75. 

  76. void *av_mallocz_static(unsigned int size)

  77. {

  78.     void *ptr = av_mallocz(size);

  79. 

  80.     if(ptr){

  81.         array_static =av_fast_realloc(array_static, &allocated_static, sizeof(void*)*(last_static+1));

  82.         if(!array_static)

  83.             return NULL;

  84.         array_static[last_static++] = ptr;

  85.     }

  86. 

  87.     return ptr;

  88. }

  89. 

  90. void *ff_realloc_static(void *ptr, unsigned int size)

  91. {

  92.     int i;

  93.     if(!ptr)

  94.       return av_mallocz_static(size);

  95.     /* Look for the old ptr */

  96.     for(i = 0; i < last_static; i++) {

  97.         if(array_static[i] == ptr) {

  98.             array_static[i] = av_realloc(array_static[i], size);

  99.             return array_static[i];

  100.         }

  101.     }

  102.     return NULL;

  103. 

  104. }

  105. 

  106. void av_free_static(void)

  107. {

  108.     while(last_static){

  109.         av_freep(&array_static[--last_static]);

  110.     }

  111.     av_freep(&array_static);

  112. }

  113. 

  114. /**

  115.  * Call av_free_static automatically before it's too late

  116.  */

  117. 

  118. static void do_free(void) __attribute__ ((destructor));

  119. 

  120. static void do_free(void)

  121. {

  122.     av_free_static();

  123. }

  124. 

  125. 

  126. /* encoder management */

  127. AVCodec *first_avcodec = NULL;

  128. 

  129. void register_avcodec(AVCodec *format)

  130. {

  131.     AVCodec **p;

  132.     p = &first_avcodec;

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

  134.     *p = format;

  135.     format->next = NULL;

  136. }

  137. 

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

  139.     s->coded_width = width;

  140.     s->coded_height= height;

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

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

  143. }

  144. 

  145. typedef struct InternalBuffer{

  146.     int last_pic_num;

  147.     uint8_t *base[4];

  148.     uint8_t *data[4];

  149.     int linesize[4];

  150.     int width, height;

  151.     enum PixelFormat pix_fmt;

  152. }InternalBuffer;

  153. 

  154. #define INTERNAL_BUFFER_SIZE 32

  155. 

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

  157. 

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

  159.     int w_align= 1;

  160.     int h_align= 1;

  161. 

  162.     switch(s->pix_fmt){

  163.     case PIX_FMT_YUV420P:

  164.     case PIX_FMT_YUYV422:

  165.     case PIX_FMT_UYVY422:

  166.     case PIX_FMT_YUV422P:

  167.     case PIX_FMT_YUV444P:

  168.     case PIX_FMT_GRAY8:

  169.     case PIX_FMT_GRAY16BE:

  170.     case PIX_FMT_GRAY16LE:

  171.     case PIX_FMT_YUVJ420P:

  172.     case PIX_FMT_YUVJ422P:

  173.     case PIX_FMT_YUVJ444P:

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

  175.         h_align= 16;

  176.         break;

  177.     case PIX_FMT_YUV411P:

  178.     case PIX_FMT_UYYVYY411:

  179.         w_align=32;

  180.         h_align=8;

  181.         break;

  182.     case PIX_FMT_YUV410P:

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

  184.             w_align=64;

  185.             h_align=64;

  186.         }

  187.     case PIX_FMT_RGB555:

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

  189.             w_align=4;

  190.             h_align=4;

  191.         }

  192.     case PIX_FMT_PAL8:

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

  194.             w_align=4;

  195.             h_align=4;

  196.         }

  197.         break;

  198.     case PIX_FMT_BGR24:

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

  200.             w_align=4;

  201.             h_align=4;

  202.         }

  203.         break;

  204.     default:

  205.         w_align= 1;

  206.         h_align= 1;

  207.         break;

  208.     }

  209. 

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

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

  212. }

  213. 

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

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

  216.         return 0;

  217. 

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

  219.     return -1;

  220. }

  221. 

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

  223.     int i;

  224.     int w= s->width;

  225.     int h= s->height;

  226.     InternalBuffer *buf;

  227.     int *picture_number;

  228. 

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

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

  231.         return -1;

  232.     }

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

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

  235.         return -1;

  236.     }

  237. 

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

  239.         return -1;

  240. 

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

  242.         s->internal_buffer= av_mallocz(INTERNAL_BUFFER_SIZE*sizeof(InternalBuffer));

  243.     }

  244. #if 0

  245.     s->internal_buffer= av_fast_realloc(

  246.         s->internal_buffer,

  247.         &s->internal_buffer_size,

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

  249.         );

  250. #endif

  251. 

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

  253.     picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE-1]).last_pic_num; //FIXME ugly hack

  254.     (*picture_number)++;

  255. 

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

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

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

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

  260.         }

  261.     }

  262. 

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

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

  265.         buf->last_pic_num= *picture_number;

  266.     }else{

  267.         int h_chroma_shift, v_chroma_shift;

  268.         int pixel_size, size[3];

  269.         AVPicture picture;

  270. 

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

  272. 

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

  274. 

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

  276.             w+= EDGE_WIDTH*2;

  277.             h+= EDGE_WIDTH*2;

  278.         }

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

  280. 

  281.         avpicture_fill(&picture, NULL, s->pix_fmt, w, h);

  282.         pixel_size= picture.linesize[0]*8 / w;

  283. //av_log(NULL, AV_LOG_ERROR, "%d %d %d %d\n", (int)picture.data[1], w, h, s->pix_fmt);

  284.         assert(pixel_size>=1);

  285.             //FIXME next ensures that linesize= 2^x uvlinesize, that is needed because some MC code assumes it

  286.         if(pixel_size == 3*8)

  287.             w= ALIGN(w, STRIDE_ALIGN<<h_chroma_shift);

  288.         else

  289.             w= ALIGN(pixel_size*w, STRIDE_ALIGN<<(h_chroma_shift+3)) / pixel_size;

  290.         size[1] = avpicture_fill(&picture, NULL, s->pix_fmt, w, h);

  291.         size[0] = picture.linesize[0] * h;

  292.         size[1] -= size[0];

  293.         if(picture.data[2])

  294.             size[1]= size[2]= size[1]/2;

  295.         else

  296.             size[2]= 0;

  297. 

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

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

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

  301. 

  302.         for(i=0; i<3 && size[i]; i++){

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

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

  305. 

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

  307. 

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

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

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

  311. 

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

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

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

  315.             else

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

  317.         }

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

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

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

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

  322.     }

  323.     pic->type= FF_BUFFER_TYPE_INTERNAL;

  324. 

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

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

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

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

  329.     }

  330.     s->internal_buffer_count++;

  331. 

  332.     return 0;

  333. }

  334. 

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

  336.     int i;

  337.     InternalBuffer *buf, *last;

  338. 

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

  340.     assert(s->internal_buffer_count);

  341. 

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

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

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

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

  346.             break;

  347.     }

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

  349.     s->internal_buffer_count--;

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

  351. 

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

  353. 

  354.     for(i=0; i<3; i++){

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

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

  357.     }

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

  359. }

  360. 

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

  362.     AVFrame temp_pic;

  363.     int i;

  364. 

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

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

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

  368.         pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;

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

  370.     }

  371. 

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

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

  374.         return 0;

  375. 

  376.     /*

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

  378.      */

  379.     temp_pic = *pic;

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

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

  382.     pic->opaque = NULL;

  383.     /* Allocate new frame */

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

  385.         return -1;

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

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

  388.              s->height);

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

  390.     return 0;

  391. }

  392. 

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

  394.     int i;

  395. 

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

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

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

  399.     }

  400.     return 0;

  401. }

  402. 

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

  404.     return fmt[0];

  405. }

  406. 

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

  408.     AVCodecContext *avc= ptr;

  409. 

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

  411.         return avc->codec->name;

  412.     else

  413.         return "NULL";

  414. }

  415. 

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

  417. #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

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

  419. #define V AV_OPT_FLAG_VIDEO_PARAM

  420. #define A AV_OPT_FLAG_AUDIO_PARAM

  421. #define S AV_OPT_FLAG_SUBTITLE_PARAM

  422. #define E AV_OPT_FLAG_ENCODING_PARAM

  423. #define D AV_OPT_FLAG_DECODING_PARAM

  424. 

  425. #define AV_CODEC_DEFAULT_BITRATE 200*1000

  426. 

  427. static const AVOption options[]={

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

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

  430. {"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},

  431. {"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|A|E|D, "flags"},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  453. {"global_header", "place global headers in extradata instead of every keyframe", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GLOBAL_HEADER, INT_MIN, INT_MAX, 0, "flags"},

  454. {"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"},

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

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

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

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

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

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

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

  462. {"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"},

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

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

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

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

  467. {"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"},

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

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

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

  471. {"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"},

  472. #endif

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  501. {"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},

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

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

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

  505. #endif

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

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

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

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

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

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

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

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

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

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

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

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

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

  519. {"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"},

  520. {"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"},

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

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

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

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

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

  526. {"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"},

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

  528. {"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"},

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

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

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

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

  533. {"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},

  534. {"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},

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

  536. {"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|E, "strict"},

  537. {"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|E, "strict"},

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

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

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

  541. {"b_qoffset", "qp offset between p and b frames", OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, 1.25, FLT_MIN, FLT_MAX, V|E},

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

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

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

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

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

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

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

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

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

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

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

  553. {"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},

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

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

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

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

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

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

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

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

  562. {"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},

  563. {"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},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  620. {"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"},

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

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

  623. {"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"},

  624. {"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"},

  625. {"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"},

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

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

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

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

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

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

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

  633. {"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},

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

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

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

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

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

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

  640. {"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"},

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

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

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

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

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

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

  647. #ifdef CONFIG_SNOW_ENCODER

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

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

  650. #endif

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

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

  653. {"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},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  680. {"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},

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

  682. {"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_FLAGS, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|A|E|D, "flags2"},

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

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

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

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

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

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

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

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

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

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

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

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

  695. {"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},

  696. {"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},

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

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

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

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

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

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

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

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

  705. {"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},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  724. {"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"},

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

  726. {"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"},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  741. {"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},

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

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

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

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

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

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

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

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

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

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

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

  753. {"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},

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

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

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

  757. {NULL},

  758. };

  759. 

  760. #undef A

  761. #undef V

  762. #undef S

  763. #undef E

  764. #undef D

  765. #undef DEFAULT

  766. 

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

  768. 

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

  770.     int flags=0;

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

  772. 

  773.     s->av_class= &av_codec_context_class;

  774. 

  775.     s->codec_type = codec_type;

  776.     if(codec_type == CODEC_TYPE_AUDIO)

  777.         flags= AV_OPT_FLAG_AUDIO_PARAM;

  778.     else if(codec_type == CODEC_TYPE_VIDEO)

  779.         flags= AV_OPT_FLAG_VIDEO_PARAM;

  780.     else if(codec_type == CODEC_TYPE_SUBTITLE)

  781.         flags= AV_OPT_FLAG_SUBTITLE_PARAM;

  782.     av_opt_set_defaults2(s, flags, flags);

  783. 

  784.     s->rc_eq= "tex^qComp";

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

  786.     s->get_buffer= avcodec_default_get_buffer;

  787.     s->release_buffer= avcodec_default_release_buffer;

  788.     s->get_format= avcodec_default_get_format;

  789.     s->execute= avcodec_default_execute;

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

  791.     s->pix_fmt= PIX_FMT_NONE;

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

  793. 

  794.     s->palctrl = NULL;

  795.     s->reget_buffer= avcodec_default_reget_buffer;

  796. }

  797. 

  798. AVCodecContext *avcodec_alloc_context2(enum CodecType codec_type){

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

  800. 

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

  802. 

  803.     avcodec_get_context_defaults2(avctx, codec_type);

  804. 

  805.     return avctx;

  806. }

  807. 

  808. void avcodec_get_context_defaults(AVCodecContext *s){

  809.     avcodec_get_context_defaults2(s, CODEC_TYPE_UNKNOWN);

  810. }

  811. 

  812. AVCodecContext *avcodec_alloc_context(void){

  813.     return avcodec_alloc_context2(CODEC_TYPE_UNKNOWN);

  814. }

  815. 

  816. void avcodec_get_frame_defaults(AVFrame *pic){

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

  818. 

  819.     pic->pts= AV_NOPTS_VALUE;

  820.     pic->key_frame= 1;

  821. }

  822. 

  823. AVFrame *avcodec_alloc_frame(void){

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

  825. 

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

  827. 

  828.     avcodec_get_frame_defaults(pic);

  829. 

  830.     return pic;

  831. }

  832. 

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

  834. {

  835.     int ret= -1;

  836. 

  837.     entangled_thread_counter++;

  838.     if(entangled_thread_counter != 1){

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

  840.         goto end;

  841.     }

  842. 

  843.     if(avctx->codec)

  844.         goto end;

  845. 

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

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

  848.         if (!avctx->priv_data) {

  849.             ret = AVERROR(ENOMEM);

  850.             goto end;

  851.         }

  852.     } else {

  853.         avctx->priv_data = NULL;

  854.     }

  855. 

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

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

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

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

  860. 

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

  862.         av_freep(&avctx->priv_data);

  863.         ret = AVERROR(EINVAL);

  864.         goto end;

  865.     }

  866. 

  867.     avctx->codec = codec;

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

  869.     avctx->frame_number = 0;

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

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

  872.         if (ret < 0) {

  873.             av_freep(&avctx->priv_data);

  874.             avctx->codec= NULL;

  875.             goto end;

  876.         }

  877.     }

  878.     ret=0;

  879. end:

  880.     entangled_thread_counter--;

  881.     return ret;

  882. }

  883. 

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

  885.                          const short *samples)

  886. {

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

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

  889.         return -1;

  890.     }

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

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

  893.         avctx->frame_number++;

  894.         return ret;

  895.     }else

  896.         return 0;

  897. }

  898. 

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

  900.                          const AVFrame *pict)

  901. {

  902.     if(buf_size < FF_MIN_BUFFER_SIZE){

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

  904.         return -1;

  905.     }

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

  907.         return -1;

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

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

  910.         avctx->frame_number++;

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

  912. 

  913.         return ret;

  914.     }else

  915.         return 0;

  916. }

  917. 

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

  919.                             const AVSubtitle *sub)

  920. {

  921.     int ret;

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

  923.     avctx->frame_number++;

  924.     return ret;

  925. }

  926. 

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

  928.                          int *got_picture_ptr,

  929.                          uint8_t *buf, int buf_size)

  930. {

  931.     int ret;

  932. 

  933.     *got_picture_ptr= 0;

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

  935.         return -1;

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

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

  938.                                 buf, buf_size);

  939. 

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

  941. 

  942.         if (*got_picture_ptr)

  943.             avctx->frame_number++;

  944.     }else

  945.         ret= 0;

  946. 

  947.     return ret;

  948. }

  949. 

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

  951.                          int *frame_size_ptr,

  952.                          uint8_t *buf, int buf_size)

  953. {

  954.     int ret;

  955. 

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

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

  958.         if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){

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

  960.             return -1;

  961.         }

  962.         if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||

  963.         *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t) ||

  964.         *frame_size_ptr < buf_size){

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

  966.             return -1;

  967.         }

  968. 

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

  970.                                 buf, buf_size);

  971.         avctx->frame_number++;

  972.     }else{

  973.         ret= 0;

  974.         *frame_size_ptr=0;

  975.     }

  976.     return ret;

  977. }

  978. 

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

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

  981.                          int *frame_size_ptr,

  982.                          uint8_t *buf, int buf_size){

  983.     *frame_size_ptr= AVCODEC_MAX_AUDIO_FRAME_SIZE;

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

  985. }

  986. #endif

  987. 

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

  989.                             int *got_sub_ptr,

  990.                             const uint8_t *buf, int buf_size)

  991. {

  992.     int ret;

  993. 

  994.     *got_sub_ptr = 0;

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

  996.                                (uint8_t *)buf, buf_size);

  997.     if (*got_sub_ptr)

  998.         avctx->frame_number++;

  999.     return ret;

  1000. }

  1001. 

  1002. int avcodec_close(AVCodecContext *avctx)

  1003. {

  1004.     entangled_thread_counter++;

  1005.     if(entangled_thread_counter != 1){

  1006.         av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");

  1007.         entangled_thread_counter--;

  1008.         return -1;

  1009.     }

  1010. 

  1011.     if (ENABLE_THREADS && avctx->thread_opaque)

  1012.         avcodec_thread_free(avctx);

  1013.     if (avctx->codec->close)

  1014.         avctx->codec->close(avctx);

  1015.     avcodec_default_free_buffers(avctx);

  1016.     av_freep(&avctx->priv_data);

  1017.     avctx->codec = NULL;

  1018.     entangled_thread_counter--;

  1019.     return 0;

  1020. }

  1021. 

  1022. AVCodec *avcodec_find_encoder(enum CodecID id)

  1023. {

  1024.     AVCodec *p;

  1025.     p = first_avcodec;

  1026.     while (p) {

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

  1028.             return p;

  1029.         p = p->next;

  1030.     }

  1031.     return NULL;

  1032. }

  1033. 

  1034. AVCodec *avcodec_find_encoder_by_name(const char *name)

  1035. {

  1036.     AVCodec *p;

  1037.     p = first_avcodec;

  1038.     while (p) {

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

  1040.             return p;

  1041.         p = p->next;

  1042.     }

  1043.     return NULL;

  1044. }

  1045. 

  1046. AVCodec *avcodec_find_decoder(enum CodecID id)

  1047. {

  1048.     AVCodec *p;

  1049.     p = first_avcodec;

  1050.     while (p) {

  1051.         if (p->decode != NULL && p->id == id)

  1052.             return p;

  1053.         p = p->next;

  1054.     }

  1055.     return NULL;

  1056. }

  1057. 

  1058. AVCodec *avcodec_find_decoder_by_name(const char *name)

  1059. {

  1060.     AVCodec *p;

  1061.     p = first_avcodec;

  1062.     while (p) {

  1063.         if (p->decode != NULL && strcmp(name,p->name) == 0)

  1064.             return p;

  1065.         p = p->next;

  1066.     }

  1067.     return NULL;

  1068. }

  1069. 

  1070. void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)

  1071. {

  1072.     const char *codec_name;

  1073.     AVCodec *p;

  1074.     char buf1[32];

  1075.     char channels_str[100];

  1076.     int bitrate;

  1077. 

  1078.     if (encode)

  1079.         p = avcodec_find_encoder(enc->codec_id);

  1080.     else

  1081.         p = avcodec_find_decoder(enc->codec_id);

  1082. 

  1083.     if (p) {

  1084.         codec_name = p->name;

  1085.         if (!encode && enc->codec_id == CODEC_ID_MP3) {

  1086.             if (enc->sub_id == 2)

  1087.                 codec_name = "mp2";

  1088.             else if (enc->sub_id == 1)

  1089.                 codec_name = "mp1";

  1090.         }

  1091.     } else if (enc->codec_id == CODEC_ID_MPEG2TS) {

  1092.         /* fake mpeg2 transport stream codec (currently not

  1093.            registered) */

  1094.         codec_name = "mpeg2ts";

  1095.     } else if (enc->codec_name[0] != '\0') {

  1096.         codec_name = enc->codec_name;

  1097.     } else {

  1098.         /* output avi tags */

  1099.         if(   isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)

  1100.            && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){

  1101.             snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",

  1102.                      enc->codec_tag & 0xff,

  1103.                      (enc->codec_tag >> 8) & 0xff,

  1104.                      (enc->codec_tag >> 16) & 0xff,

  1105.                      (enc->codec_tag >> 24) & 0xff,

  1106.                       enc->codec_tag);

  1107.         } else {

  1108.             snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);

  1109.         }

  1110.         codec_name = buf1;

  1111.     }

  1112. 

  1113.     switch(enc->codec_type) {

  1114.     case CODEC_TYPE_VIDEO:

  1115.         snprintf(buf, buf_size,

  1116.                  "Video: %s%s",

  1117.                  codec_name, enc->mb_decision ? " (hq)" : "");

  1118.         if (enc->pix_fmt != PIX_FMT_NONE) {

  1119.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1120.                      ", %s",

  1121.                      avcodec_get_pix_fmt_name(enc->pix_fmt));

  1122.         }

  1123.         if (enc->width) {

  1124.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1125.                      ", %dx%d",

  1126.                      enc->width, enc->height);

  1127.             if(av_log_level >= AV_LOG_DEBUG){

  1128.                 int g= ff_gcd(enc->time_base.num, enc->time_base.den);

  1129.                 snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1130.                      ", %d/%d",

  1131.                      enc->time_base.num/g, enc->time_base.den/g);

  1132.             }

  1133.         }

  1134.         if (encode) {

  1135.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1136.                      ", q=%d-%d", enc->qmin, enc->qmax);

  1137.         }

  1138.         bitrate = enc->bit_rate;

  1139.         break;

  1140.     case CODEC_TYPE_AUDIO:

  1141.         snprintf(buf, buf_size,

  1142.                  "Audio: %s",

  1143.                  codec_name);

  1144.         switch (enc->channels) {

  1145.             case 1:

  1146.                 strcpy(channels_str, "mono");

  1147.                 break;

  1148.             case 2:

  1149.                 strcpy(channels_str, "stereo");

  1150.                 break;

  1151.             case 6:

  1152.                 strcpy(channels_str, "5:1");

  1153.                 break;

  1154.             default:

  1155.                 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);

  1156.                 break;

  1157.         }

  1158.         if (enc->sample_rate) {

  1159.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1160.                      ", %d Hz, %s",

  1161.                      enc->sample_rate,

  1162.                      channels_str);

  1163.         }

  1164. 

  1165.         /* for PCM codecs, compute bitrate directly */

  1166.         switch(enc->codec_id) {

  1167.         case CODEC_ID_PCM_S32LE:

  1168.         case CODEC_ID_PCM_S32BE:

  1169.         case CODEC_ID_PCM_U32LE:

  1170.         case CODEC_ID_PCM_U32BE:

  1171.             bitrate = enc->sample_rate * enc->channels * 32;

  1172.             break;

  1173.         case CODEC_ID_PCM_S24LE:

  1174.         case CODEC_ID_PCM_S24BE:

  1175.         case CODEC_ID_PCM_U24LE:

  1176.         case CODEC_ID_PCM_U24BE:

  1177.         case CODEC_ID_PCM_S24DAUD:

  1178.             bitrate = enc->sample_rate * enc->channels * 24;

  1179.             break;

  1180.         case CODEC_ID_PCM_S16LE:

  1181.         case CODEC_ID_PCM_S16BE:

  1182.         case CODEC_ID_PCM_U16LE:

  1183.         case CODEC_ID_PCM_U16BE:

  1184.             bitrate = enc->sample_rate * enc->channels * 16;

  1185.             break;

  1186.         case CODEC_ID_PCM_S8:

  1187.         case CODEC_ID_PCM_U8:

  1188.         case CODEC_ID_PCM_ALAW:

  1189.         case CODEC_ID_PCM_MULAW:

  1190.             bitrate = enc->sample_rate * enc->channels * 8;

  1191.             break;

  1192.         default:

  1193.             bitrate = enc->bit_rate;

  1194.             break;

  1195.         }

  1196.         break;

  1197.     case CODEC_TYPE_DATA:

  1198.         snprintf(buf, buf_size, "Data: %s", codec_name);

  1199.         bitrate = enc->bit_rate;

  1200.         break;

  1201.     case CODEC_TYPE_SUBTITLE:

  1202.         snprintf(buf, buf_size, "Subtitle: %s", codec_name);

  1203.         bitrate = enc->bit_rate;

  1204.         break;

  1205.     default:

  1206.         snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);

  1207.         return;

  1208.     }

  1209.     if (encode) {

  1210.         if (enc->flags & CODEC_FLAG_PASS1)

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

  1212.                      ", pass 1");

  1213.         if (enc->flags & CODEC_FLAG_PASS2)

  1214.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1215.                      ", pass 2");

  1216.     }

  1217.     if (bitrate != 0) {

  1218.         snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1219.                  ", %d kb/s", bitrate / 1000);

  1220.     }

  1221. }

  1222. 

  1223. unsigned avcodec_version( void )

  1224. {

  1225.   return LIBAVCODEC_VERSION_INT;

  1226. }

  1227. 

  1228. unsigned avcodec_build( void )

  1229. {

  1230.   return LIBAVCODEC_BUILD;

  1231. }

  1232. 

  1233. static void init_crcs(void){

  1234. #if LIBAVUTIL_VERSION_INT  < (50<<16)

  1235.     av_crc04C11DB7= av_mallocz_static(sizeof(AVCRC) * 257);

  1236.     av_crc8005    = av_mallocz_static(sizeof(AVCRC) * 257);

  1237.     av_crc07      = av_mallocz_static(sizeof(AVCRC) * 257);

  1238. #endif

  1239.     av_crc_init(av_crc04C11DB7, 0, 32, AV_CRC_32_IEEE, sizeof(AVCRC)*257);

  1240.     av_crc_init(av_crc8005    , 0, 16, AV_CRC_16     , sizeof(AVCRC)*257);

  1241.     av_crc_init(av_crc07      , 0,  8, AV_CRC_8_ATM  , sizeof(AVCRC)*257);

  1242. }

  1243. 

  1244. void avcodec_init(void)

  1245. {

  1246.     static int inited = 0;

  1247. 

  1248.     if (inited != 0)

  1249.         return;

  1250.     inited = 1;

  1251. 

  1252.     dsputil_static_init();

  1253.     init_crcs();

  1254. }

  1255. 

  1256. void avcodec_flush_buffers(AVCodecContext *avctx)

  1257. {

  1258.     if(avctx->codec->flush)

  1259.         avctx->codec->flush(avctx);

  1260. }

  1261. 

  1262. void avcodec_default_free_buffers(AVCodecContext *s){

  1263.     int i, j;

  1264. 

  1265.     if(s->internal_buffer==NULL) return;

  1266. 

  1267.     for(i=0; i<INTERNAL_BUFFER_SIZE; i++){

  1268.         InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];

  1269.         for(j=0; j<4; j++){

  1270.             av_freep(&buf->base[j]);

  1271.             buf->data[j]= NULL;

  1272.         }

  1273.     }

  1274.     av_freep(&s->internal_buffer);

  1275. 

  1276.     s->internal_buffer_count=0;

  1277. }

  1278. 

  1279. char av_get_pict_type_char(int pict_type){

  1280.     switch(pict_type){

  1281.     case I_TYPE: return 'I';

  1282.     case P_TYPE: return 'P';

  1283.     case B_TYPE: return 'B';

  1284.     case S_TYPE: return 'S';

  1285.     case SI_TYPE:return 'i';

  1286.     case SP_TYPE:return 'p';

  1287.     default:     return '?';

  1288.     }

  1289. }

  1290. 

  1291. int av_get_bits_per_sample(enum CodecID codec_id){

  1292.     switch(codec_id){

  1293.     case CODEC_ID_ADPCM_SBPRO_2:

  1294.         return 2;

  1295.     case CODEC_ID_ADPCM_SBPRO_3:

  1296.         return 3;

  1297.     case CODEC_ID_ADPCM_SBPRO_4:

  1298.     case CODEC_ID_ADPCM_CT:

  1299.         return 4;

  1300.     case CODEC_ID_PCM_ALAW:

  1301.     case CODEC_ID_PCM_MULAW:

  1302.     case CODEC_ID_PCM_S8:

  1303.     case CODEC_ID_PCM_U8:

  1304.         return 8;

  1305.     case CODEC_ID_PCM_S16BE:

  1306.     case CODEC_ID_PCM_S16LE:

  1307.     case CODEC_ID_PCM_U16BE:

  1308.     case CODEC_ID_PCM_U16LE:

  1309.         return 16;

  1310.     case CODEC_ID_PCM_S24DAUD:

  1311.     case CODEC_ID_PCM_S24BE:

  1312.     case CODEC_ID_PCM_S24LE:

  1313.     case CODEC_ID_PCM_U24BE:

  1314.     case CODEC_ID_PCM_U24LE:

  1315.         return 24;

  1316.     case CODEC_ID_PCM_S32BE:

  1317.     case CODEC_ID_PCM_S32LE:

  1318.     case CODEC_ID_PCM_U32BE:

  1319.     case CODEC_ID_PCM_U32LE:

  1320.         return 32;

  1321.     default:

  1322.         return 0;

  1323.     }

  1324. }

  1325. 

  1326. int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {

  1327.     switch (sample_fmt) {

  1328.     case SAMPLE_FMT_U8:

  1329.         return 8;

  1330.     case SAMPLE_FMT_S16:

  1331.         return 16;

  1332.     case SAMPLE_FMT_S24:

  1333.         return 24;

  1334.     case SAMPLE_FMT_S32:

  1335.     case SAMPLE_FMT_FLT:

  1336.         return 32;

  1337.     default:

  1338.         return 0;

  1339.     }

  1340. }

  1341. 

  1342. #if !defined(HAVE_THREADS)

  1343. int avcodec_thread_init(AVCodecContext *s, int thread_count){

  1344.     return -1;

  1345. }

  1346. #endif

  1347. 

  1348. unsigned int av_xiphlacing(unsigned char *s, unsigned int v)

  1349. {

  1350.     unsigned int n = 0;

  1351. 

  1352.     while(v >= 0xff) {

  1353.         *s++ = 0xff;

  1354.         v -= 0xff;

  1355.         n++;

  1356.     }

  1357.     *s = v;

  1358.     n++;

  1359.     return n;

  1360. }

  1361. 

  1362. /* Wrapper to work around the lack of mkstemp() on mingw/cygin.

  1363.  * Also, tries to create file in /tmp first, if possible.

  1364.  * *prefix can be a character constant; *filename will be allocated internally.

  1365.  * Returns file descriptor of opened file (or -1 on error)

  1366.  * and opened file name in **filename. */

  1367. int av_tempfile(char *prefix, char **filename) {

  1368.     int fd=-1;

  1369. #if !defined(HAVE_MKSTEMP)

  1370.     *filename = tempnam(".", prefix);

  1371. #else

  1372.     size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */

  1373.     *filename = av_malloc(len);

  1374. #endif

  1375.     /* -----common section-----*/

  1376.     if (*filename == NULL) {

  1377.         av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");

  1378.         return -1;

  1379.     }

  1380. #if !defined(HAVE_MKSTEMP)

  1381.     fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);

  1382. #else

  1383.     snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);

  1384.     fd = mkstemp(*filename);

  1385.     if (fd < 0) {

  1386.         snprintf(*filename, len, "./%sXXXXXX", prefix);

  1387.         fd = mkstemp(*filename);

  1388.     }

  1389. #endif

  1390.     /* -----common section-----*/

  1391.     if (fd < 0) {

  1392.         av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);

  1393.         return -1;

  1394.     }

  1395.     return fd; /* success */

  1396. }

  1397. 

  1398. typedef struct {

  1399.     const char *abbr;

  1400.     int width, height;

  1401. } VideoFrameSizeAbbr;

  1402. 

  1403. typedef struct {

  1404.     const char *abbr;

  1405.     int rate_num, rate_den;

  1406. } VideoFrameRateAbbr;

  1407. 

  1408. static VideoFrameSizeAbbr video_frame_size_abbrs[] = {

  1409.     { "ntsc",      720, 480 },

  1410.     { "pal",       720, 576 },

  1411.     { "qntsc",     352, 240 }, /* VCD compliant NTSC */

  1412.     { "qpal",      352, 288 }, /* VCD compliant PAL */

  1413.     { "sntsc",     640, 480 }, /* square pixel NTSC */

  1414.     { "spal",      768, 576 }, /* square pixel PAL */

  1415.     { "film",      352, 240 },

  1416.     { "ntsc-film", 352, 240 },

  1417.     { "sqcif",     128,  96 },

  1418.     { "qcif",      176, 144 },

  1419.     { "cif",       352, 288 },

  1420.     { "4cif",      704, 576 },

  1421.     { "qqvga",     160, 120 },

  1422.     { "qvga",      320, 240 },

  1423.     { "vga",       640, 480 },

  1424.     { "svga",      800, 600 },

  1425.     { "xga",      1024, 768 },

  1426.     { "uxga",     1600,1200 },

  1427.     { "qxga",     2048,1536 },

  1428.     { "sxga",     1280,1024 },

  1429.     { "qsxga",    2560,2048 },

  1430.     { "hsxga",    5120,4096 },

  1431.     { "wvga",      852, 480 },

  1432.     { "wxga",     1366, 768 },

  1433.     { "wsxga",    1600,1024 },

  1434.     { "wuxga",    1920,1200 },

  1435.     { "woxga",    2560,1600 },

  1436.     { "wqsxga",   3200,2048 },

  1437.     { "wquxga",   3840,2400 },

  1438.     { "whsxga",   6400,4096 },

  1439.     { "whuxga",   7680,4800 },

  1440.     { "cga",       320, 200 },

  1441.     { "ega",       640, 350 },

  1442.     { "hd480",     852, 480 },

  1443.     { "hd720",    1280, 720 },

  1444.     { "hd1080",   1920,1080 },

  1445. };

  1446. 

  1447. static VideoFrameRateAbbr video_frame_rate_abbrs[]= {

  1448.     { "ntsc",      30000, 1001 },

  1449.     { "pal",          25,    1 },

  1450.     { "qntsc",     30000, 1001 }, /* VCD compliant NTSC */

  1451.     { "qpal",         25,    1 }, /* VCD compliant PAL */

  1452.     { "sntsc",     30000, 1001 }, /* square pixel NTSC */

  1453.     { "spal",         25,    1 }, /* square pixel PAL */

  1454.     { "film",         24,    1 },

  1455.     { "ntsc-film", 24000, 1001 },

  1456. };

  1457. 

  1458. int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)

  1459. {

  1460.     int i;

  1461.     int n = sizeof(video_frame_size_abbrs) / sizeof(VideoFrameSizeAbbr);

  1462.     const char *p;

  1463.     int frame_width = 0, frame_height = 0;

  1464. 

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

  1466.         if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {

  1467.             frame_width = video_frame_size_abbrs[i].width;

  1468.             frame_height = video_frame_size_abbrs[i].height;

  1469.             break;

  1470.         }

  1471.     }

  1472.     if (i == n) {

  1473.         p = str;

  1474.         frame_width = strtol(p, (char **)&p, 10);

  1475.         if (*p)

  1476.             p++;

  1477.         frame_height = strtol(p, (char **)&p, 10);

  1478.     }

  1479.     if (frame_width <= 0 || frame_height <= 0)

  1480.         return -1;

  1481.     *width_ptr = frame_width;

  1482.     *height_ptr = frame_height;

  1483.     return 0;

  1484. }

  1485. 

  1486. int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)

  1487. {

  1488.     int i;

  1489.     int n = sizeof(video_frame_rate_abbrs) / sizeof(VideoFrameRateAbbr);

  1490.     char* cp;

  1491. 

  1492.     /* First, we check our abbreviation table */

  1493.     for (i = 0; i < n; ++i)

  1494.          if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {

  1495.              frame_rate->num = video_frame_rate_abbrs[i].rate_num;

  1496.              frame_rate->den = video_frame_rate_abbrs[i].rate_den;

  1497.              return 0;

  1498.          }

  1499. 

  1500.     /* Then, we try to parse it as fraction */

  1501.     cp = strchr(arg, '/');

  1502.     if (!cp)

  1503.         cp = strchr(arg, ':');

  1504.     if (cp) {

  1505.         char* cpp;

  1506.         frame_rate->num = strtol(arg, &cpp, 10);

  1507.         if (cpp != arg || cpp == cp)

  1508.             frame_rate->den = strtol(cp+1, &cpp, 10);

  1509.         else

  1510.            frame_rate->num = 0;

  1511.     }

  1512.     else {

  1513.         /* Finally we give up and parse it as double */

  1514.         AVRational time_base = av_d2q(strtod(arg, 0), DEFAULT_FRAME_RATE_BASE);

  1515.         frame_rate->den = time_base.den;

  1516.         frame_rate->num = time_base.num;

  1517.     }

  1518.     if (!frame_rate->num || !frame_rate->den)

  1519.         return -1;

  1520.     else

  1521.         return 0;

  1522. }