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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. #ifdef __MINGW32__

  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. /**

  63.  * realloc which does nothing if the block is large enough

  64.  */

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

  66. {

  67.     if(min_size < *size)

  68.         return ptr;

  69. 

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

  71. 

  72.     return av_realloc(ptr, *size);

  73. }

  74. 

  75. static unsigned int last_static = 0;

  76. static unsigned int allocated_static = 0;

  77. static void** array_static = NULL;

  78. 

  79. /**

  80.  * allocation of static arrays - do not use for normal allocation.

  81.  */

  82. void *av_mallocz_static(unsigned int size)

  83. {

  84.     void *ptr = av_mallocz(size);

  85. 

  86.     if(ptr){

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

  88.         if(!array_static)

  89.             return NULL;

  90.         array_static[last_static++] = ptr;

  91.     }

  92. 

  93.     return ptr;

  94. }

  95. 

  96. /**

  97.  * same as above, but does realloc

  98.  */

  99. 

  100. void *av_realloc_static(void *ptr, unsigned int size)

  101. {

  102.     int i;

  103.     if(!ptr)

  104.       return av_mallocz_static(size);

  105.     /* Look for the old ptr */

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

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

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

  109.             return array_static[i];

  110.         }

  111.     }

  112.     return NULL;

  113. 

  114. }

  115. 

  116. /**

  117.  * free all static arrays and reset pointers to 0.

  118.  */

  119. void av_free_static(void)

  120. {

  121.     while(last_static){

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

  123.     }

  124.     av_freep(&array_static);

  125. }

  126. 

  127. /**

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

  129.  */

  130. 

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

  132. 

  133. static void do_free(void)

  134. {

  135.     av_free_static();

  136. }

  137. 

  138. 

  139. /* encoder management */

  140. AVCodec *first_avcodec = NULL;

  141. 

  142. void register_avcodec(AVCodec *format)

  143. {

  144.     AVCodec **p;

  145.     p = &first_avcodec;

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

  147.     *p = format;

  148.     format->next = NULL;

  149. }

  150. 

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

  152.     s->coded_width = width;

  153.     s->coded_height= height;

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

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

  156. }

  157. 

  158. typedef struct InternalBuffer{

  159.     int last_pic_num;

  160.     uint8_t *base[4];

  161.     uint8_t *data[4];

  162.     int linesize[4];

  163. }InternalBuffer;

  164. 

  165. #define INTERNAL_BUFFER_SIZE 32

  166. 

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

  168. 

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

  170.     int w_align= 1;

  171.     int h_align= 1;

  172. 

  173.     switch(s->pix_fmt){

  174.     case PIX_FMT_YUV420P:

  175.     case PIX_FMT_YUV422:

  176.     case PIX_FMT_UYVY422:

  177.     case PIX_FMT_YUV422P:

  178.     case PIX_FMT_YUV444P:

  179.     case PIX_FMT_GRAY8:

  180.     case PIX_FMT_YUVJ420P:

  181.     case PIX_FMT_YUVJ422P:

  182.     case PIX_FMT_YUVJ444P:

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

  184.         h_align= 16;

  185.         break;

  186.     case PIX_FMT_YUV411P:

  187.     case PIX_FMT_UYVY411:

  188.         w_align=32;

  189.         h_align=8;

  190.         break;

  191.     case PIX_FMT_YUV410P:

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

  193.             w_align=64;

  194.             h_align=64;

  195.         }

  196.     case PIX_FMT_RGB555:

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

  198.             w_align=4;

  199.             h_align=4;

  200.         }

  201.     case PIX_FMT_PAL8:

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

  203.             w_align=4;

  204.             h_align=4;

  205.         }

  206.         break;

  207.     case PIX_FMT_BGR24:

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

  209.             w_align=4;

  210.             h_align=4;

  211.         }

  212.         break;

  213.     default:

  214.         w_align= 1;

  215.         h_align= 1;

  216.         break;

  217.     }

  218. 

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

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

  221. }

  222. 

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

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

  225.         return 0;

  226. 

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

  228.     return -1;

  229. }

  230. 

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

  232.     int i;

  233.     int w= s->width;

  234.     int h= s->height;

  235.     InternalBuffer *buf;

  236.     int *picture_number;

  237. 

  238.     assert(pic->data[0]==NULL);

  239.     assert(INTERNAL_BUFFER_SIZE > s->internal_buffer_count);

  240. 

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

  242.         return -1;

  243. 

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

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

  246.     }

  247. #if 0

  248.     s->internal_buffer= av_fast_realloc(

  249.         s->internal_buffer,

  250.         &s->internal_buffer_size,

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

  252.         );

  253. #endif

  254. 

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

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

  257.     (*picture_number)++;

  258. 

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

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

  261.         buf->last_pic_num= *picture_number;

  262.     }else{

  263.         int h_chroma_shift, v_chroma_shift;

  264.         int pixel_size, size[3];

  265.         AVPicture picture;

  266. 

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

  268. 

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

  270. 

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

  272.             w+= EDGE_WIDTH*2;

  273.             h+= EDGE_WIDTH*2;

  274.         }

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

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

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

  278.         assert(pixel_size>=1);

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

  280.         if(pixel_size == 3*8)

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

  282.         else

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

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

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

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

  287.         if(picture.data[2])

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

  289.         else

  290.             size[2]= 0;

  291. 

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

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

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

  295. 

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

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

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

  299. 

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

  301. 

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

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

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

  305. 

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

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

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

  309.             else

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

  311.         }

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

  313.     }

  314.     pic->type= FF_BUFFER_TYPE_INTERNAL;

  315. 

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

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

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

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

  320.     }

  321.     s->internal_buffer_count++;

  322. 

  323.     return 0;

  324. }

  325. 

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

  327.     int i;

  328.     InternalBuffer *buf, *last, temp;

  329. 

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

  331.     assert(s->internal_buffer_count);

  332. 

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

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

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

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

  337.             break;

  338.     }

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

  340.     s->internal_buffer_count--;

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

  342. 

  343.     temp= *buf;

  344.     *buf= *last;

  345.     *last= temp;

  346. 

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

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

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

  350.     }

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

  352. }

  353. 

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

  355.     AVFrame temp_pic;

  356.     int i;

  357. 

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

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

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

  361.         pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;

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

  363.     }

  364. 

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

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

  367.         return 0;

  368. 

  369.     /*

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

  371.      */

  372.     temp_pic = *pic;

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

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

  375.     pic->opaque = NULL;

  376.     /* Allocate new frame */

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

  378.         return -1;

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

  380.     img_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,

  381.              s->height);

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

  383.     return 0;

  384. }

  385. 

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

  387.     int i;

  388. 

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

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

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

  392.     }

  393.     return 0;

  394. }

  395. 

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

  397.     return fmt[0];

  398. }

  399. 

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

  401.     AVCodecContext *avc= ptr;

  402. 

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

  404.         return avc->codec->name;

  405.     else

  406.         return "NULL";

  407. }

  408. 

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

  410. #define DEFAULT 0 //should be NAN but it doesnt work as its not a constant in glibc as required by ANSI/ISO C

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

  412. #define V AV_OPT_FLAG_VIDEO_PARAM

  413. #define A AV_OPT_FLAG_AUDIO_PARAM

  414. #define S AV_OPT_FLAG_SUBTITLE_PARAM

  415. #define E AV_OPT_FLAG_ENCODING_PARAM

  416. #define D AV_OPT_FLAG_DECODING_PARAM

  417. 

  418. #define AV_CODEC_DEFAULT_BITRATE 200*1000

  419. 

  420. static const AVOption options[]={

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  445. {"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"},

  446. {"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"},

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

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

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

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

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

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

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

  454. {"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"},

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

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

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

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

  459. {"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"},

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

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

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

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

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

  465. {"rate_emu", NULL, OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

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

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

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

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

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

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

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

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

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

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

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

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

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

  479. {"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},

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

  481. {"b_strategy", NULL, OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},

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

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

  484. {"rtp_payload_size", NULL, OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

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

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

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

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

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

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

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

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

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

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

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

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

  497. {"old_msmpeg4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_OLD_MSMPEG4, INT_MIN, INT_MAX, V|D, "bug"},

  498. {"xvid_ilace", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_XVID_ILACE, INT_MIN, INT_MAX, V|D, "bug"},

  499. {"ump4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_UMP4, INT_MIN, INT_MAX, V|D, "bug"},

  500. {"no_padding", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_NO_PADDING, INT_MIN, INT_MAX, V|D, "bug"},

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

  502. {"ac_vlc", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AC_VLC, INT_MIN, INT_MAX, V|D, "bug"},

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

  504. {"std_qpel", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_STD_QPEL, INT_MIN, INT_MAX, V|D, "bug"},

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

  506. {"direct_blocksize", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DIRECT_BLOCKSIZE, INT_MIN, INT_MAX, V|D, "bug"},

  507. {"edge", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_EDGE, INT_MIN, INT_MAX, V|D, "bug"},

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

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

  510. {"ms", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_MS, INT_MIN, INT_MAX, V|D, "bug"},

  511. {"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},

  512. {"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},

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

  514. {"very", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_VERY_STRICT, INT_MIN, INT_MAX, V|E, "strict"},

  515. {"strict", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_STRICT, INT_MIN, INT_MAX, V|E, "strict"},

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

  517. {"inofficial", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_INOFFICIAL, INT_MIN, INT_MAX, V|E, "strict"},

  518. {"experimental", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|E, "strict"},

  519. {"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},

  520. {"er", NULL, OFFSET(error_resilience), FF_OPT_TYPE_INT, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},

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

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

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

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

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

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

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

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

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

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

  531. {"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},

  532. {"rc_qmod_amp", NULL, OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},

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

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

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

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

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

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

  539. {"rc_buf_aggressivity", NULL, OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, 1.0, FLT_MIN, FLT_MAX, V|E},

  540. {"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},

  541. {"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},

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

  543. {"dct", NULL, OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E, "dct"},

  544. {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_AUTO, INT_MIN, INT_MAX, V|E, "dct"},

  545. {"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FASTINT, INT_MIN, INT_MAX, V|E, "dct"},

  546. {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_INT, INT_MIN, INT_MAX, V|E, "dct"},

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

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

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

  550. {"faan", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FAAN, INT_MIN, INT_MAX, V|E, "dct"},

  551. {"lumi_mask", "lumimasking", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},

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

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

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

  555. {"dark_mask", "darkness masking", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},

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

  557. {"idct", NULL, OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E|D, "idct"},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  575. {"ec", NULL, OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, 3, INT_MIN, INT_MAX, V|D, "ec"},

  576. {"guess_mvs", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_GUESS_MVS, INT_MIN, INT_MAX, V|D, "ec"},

  577. {"deblock", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_DEBLOCK, INT_MIN, INT_MAX, V|D, "ec"},

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

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

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

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

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

  583. {"aspect", NULL, OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, 0, 10, V|E},

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

  585. {"pict", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PICT_INFO, INT_MIN, INT_MAX, V|D, "debug"},

  586. {"rc", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_RC, INT_MIN, INT_MAX, V|E, "debug"},

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

  588. {"mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},

  589. {"qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_QP, INT_MIN, INT_MAX, V|D, "debug"},

  590. {"mv", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MV, INT_MIN, INT_MAX, V|D, "debug"},

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

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

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

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

  595. {"er", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_ER, INT_MIN, INT_MAX, V|D, "debug"},

  596. {"mmco", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MMCO, INT_MIN, INT_MAX, V|D, "debug"},

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

  598. {"vis_qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_QP, INT_MIN, INT_MAX, V|D, "debug"},

  599. {"vis_mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},

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

  601. {"pf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_P_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},

  602. {"bf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},

  603. {"bb", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_BACK, INT_MIN, INT_MAX, V|D, "debug_mv"},

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

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

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

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

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

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

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

  611. {"last_pred", NULL, OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

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

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

  614. {"sad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SAD, INT_MIN, INT_MAX, V|E, "cmp_func"},

  615. {"sse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SSE, INT_MIN, INT_MAX, V|E, "cmp_func"},

  616. {"satd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SATD, INT_MIN, INT_MAX, V|E, "cmp_func"},

  617. {"dct", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCT, INT_MIN, INT_MAX, V|E, "cmp_func"},

  618. {"psnr", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_PSNR, INT_MIN, INT_MAX, V|E, "cmp_func"},

  619. {"bit", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_BIT, INT_MIN, INT_MAX, V|E, "cmp_func"},

  620. {"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_RD, INT_MIN, INT_MAX, V|E, "cmp_func"},

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

  622. {"vsad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},

  623. {"vsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},

  624. {"nsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_NSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},

  625. #ifdef CONFIG_SNOW_ENCODER

  626. {"w53", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W53, INT_MIN, INT_MAX, V|E, "cmp_func"},

  627. {"w97", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W97, INT_MIN, INT_MAX, V|E, "cmp_func"},

  628. #endif

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  647. {"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_SIMPLE, INT_MIN, INT_MAX, V|E, "mbd"},

  648. {"bits", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_BITS, INT_MIN, INT_MAX, V|E, "mbd"},

  649. {"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_RD, INT_MIN, INT_MAX, V|E, "mbd"},

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

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

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

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

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

  655. {"rc_init_occupancy", NULL, OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

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

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

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

  659. {"antialias", NULL, OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "aa"},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  676. {"lowres", NULL, OFFSET(lowres), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|D},

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

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

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

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

  681. {"border_mask", NULL, OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},

  682. {"mblmin", "min macroblock quantizer scale (VBR)", OFFSET(mb_lmin), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 2, 1, FF_LAMBDA_MAX, V|E},

  683. {"mblmax", "max macroblock quantizer scale (VBR)", OFFSET(mb_lmax), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 31, 1, FF_LAMBDA_MAX, V|E},

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

  685. {"bidir_refine", NULL, OFFSET(bidir_refine), FF_OPT_TYPE_INT, DEFAULT, 0, 4, V|E},

  686. {"brd_scale", NULL, OFFSET(brd_scale), FF_OPT_TYPE_INT, DEFAULT, 0, 10, V|E},

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

  688. {"cqp", NULL, OFFSET(cqp), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, V|E},

  689. {"keyint_min", NULL, OFFSET(keyint_min), FF_OPT_TYPE_INT, 25, INT_MIN, INT_MAX, V|E},

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

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

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

  693. {"trellis", NULL, OFFSET(trellis), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},

  694. {"directpred", NULL, OFFSET(directpred), FF_OPT_TYPE_INT, 2, INT_MIN, INT_MAX, V|E},

  695. {"bpyramid", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BPYRAMID, INT_MIN, INT_MAX, V|E, "flags2"},

  696. {"wpred", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_WPRED, INT_MIN, INT_MAX, V|E, "flags2"},

  697. {"mixed_refs", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_MIXED_REFS, INT_MIN, INT_MAX, V|E, "flags2"},

  698. {"8x8dct", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_8X8DCT, INT_MIN, INT_MAX, V|E, "flags2"},

  699. {"fastpskip", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|E, "flags2"},

  700. {"aud", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_AUD, INT_MIN, INT_MAX, V|E, "flags2"},

  701. {"brdo", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BRDO, INT_MIN, INT_MAX, V|E, "flags2"},

  702. {"complexityblur", NULL, OFFSET(complexityblur), FF_OPT_TYPE_FLOAT, 20.0, FLT_MIN, FLT_MAX, V|E},

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

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

  705. {"partitions", NULL, OFFSET(partitions), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|E, "partitions"},

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

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

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

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

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

  711. {"sc_factor", NULL, OFFSET(scenechange_factor), FF_OPT_TYPE_INT, 6, 0, INT_MAX, V|E},

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

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

  714. {"b_sensitivity", NULL, OFFSET(b_sensitivity), FF_OPT_TYPE_INT, 40, 1, INT_MAX, V|E},

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

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

  717. {"lpc_coeff_precision", NULL, OFFSET(lpc_coeff_precision), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|E},

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

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

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

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

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

  723. {NULL},

  724. };

  725. 

  726. #undef A

  727. #undef V

  728. #undef S

  729. #undef E

  730. #undef D

  731. #undef DEFAULT

  732. 

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

  734. 

  735. void avcodec_get_context_defaults(AVCodecContext *s){

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

  737. 

  738.     s->av_class= &av_codec_context_class;

  739. 

  740.     av_opt_set_defaults(s);

  741. 

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

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

  744.     s->get_buffer= avcodec_default_get_buffer;

  745.     s->release_buffer= avcodec_default_release_buffer;

  746.     s->get_format= avcodec_default_get_format;

  747.     s->execute= avcodec_default_execute;

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

  749.     s->pix_fmt= PIX_FMT_NONE;

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

  751. 

  752.     s->palctrl = NULL;

  753.     s->reget_buffer= avcodec_default_reget_buffer;

  754. }

  755. 

  756. /**

  757.  * allocates a AVCodecContext and set it to defaults.

  758.  * this can be deallocated by simply calling free()

  759.  */

  760. AVCodecContext *avcodec_alloc_context(void){

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

  762. 

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

  764. 

  765.     avcodec_get_context_defaults(avctx);

  766. 

  767.     return avctx;

  768. }

  769. 

  770. void avcodec_get_frame_defaults(AVFrame *pic){

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

  772. 

  773.     pic->pts= AV_NOPTS_VALUE;

  774.     pic->key_frame= 1;

  775. }

  776. 

  777. /**

  778.  * allocates a AVPFrame and set it to defaults.

  779.  * this can be deallocated by simply calling free()

  780.  */

  781. AVFrame *avcodec_alloc_frame(void){

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

  783. 

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

  785. 

  786.     avcodec_get_frame_defaults(pic);

  787. 

  788.     return pic;

  789. }

  790. 

  791. int avcodec_open(AVCodecContext *avctx, AVCodec *codec)

  792. {

  793.     int ret= -1;

  794. 

  795.     entangled_thread_counter++;

  796.     if(entangled_thread_counter != 1){

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

  798.         goto end;

  799.     }

  800. 

  801.     if(avctx->codec)

  802.         goto end;

  803. 

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

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

  806.         if (!avctx->priv_data)

  807.             goto end;

  808.     } else {

  809.         avctx->priv_data = NULL;

  810.     }

  811. 

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

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

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

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

  816. 

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

  818.         av_freep(&avctx->priv_data);

  819.         goto end;

  820.     }

  821. 

  822.     avctx->codec = codec;

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

  824.     avctx->frame_number = 0;

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

  826.     if (ret < 0) {

  827.         av_freep(&avctx->priv_data);

  828.         avctx->codec= NULL;

  829.         goto end;

  830.     }

  831.     ret=0;

  832. end:

  833.     entangled_thread_counter--;

  834.     return ret;

  835. }

  836. 

  837. int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,

  838.                          const short *samples)

  839. {

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

  841.         av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");

  842.         return -1;

  843.     }

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

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

  846.         avctx->frame_number++;

  847.         return ret;

  848.     }else

  849.         return 0;

  850. }

  851. 

  852. int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,

  853.                          const AVFrame *pict)

  854. {

  855.     if(buf_size < FF_MIN_BUFFER_SIZE){

  856.         av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");

  857.         return -1;

  858.     }

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

  860.         return -1;

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

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

  863.         avctx->frame_number++;

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

  865. 

  866.         return ret;

  867.     }else

  868.         return 0;

  869. }

  870. 

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

  872.                             const AVSubtitle *sub)

  873. {

  874.     int ret;

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

  876.     avctx->frame_number++;

  877.     return ret;

  878. }

  879. 

  880. /**

  881.  * decode a frame.

  882.  * @param buf bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE larger then the actual read bytes

  883.  * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end

  884.  * @param buf_size the size of the buffer in bytes

  885.  * @param got_picture_ptr zero if no frame could be decompressed, Otherwise, it is non zero

  886.  * @return -1 if error, otherwise return the number of

  887.  * bytes used.

  888.  */

  889. int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,

  890.                          int *got_picture_ptr,

  891.                          uint8_t *buf, int buf_size)

  892. {

  893.     int ret;

  894. 

  895.     *got_picture_ptr= 0;

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

  897.         return -1;

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

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

  900.                                 buf, buf_size);

  901. 

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

  903. 

  904.         if (*got_picture_ptr)

  905.             avctx->frame_number++;

  906.     }else

  907.         ret= 0;

  908. 

  909.     return ret;

  910. }

  911. 

  912. /* decode an audio frame. return -1 if error, otherwise return the

  913.    *number of bytes used. If no frame could be decompressed,

  914.    *frame_size_ptr is zero. Otherwise, it is the decompressed frame

  915.    *size in BYTES. */

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

  917.                          int *frame_size_ptr,

  918.                          uint8_t *buf, int buf_size)

  919. {

  920.     int ret;

  921. 

  922.     *frame_size_ptr= 0;

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

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

  925.                                 buf, buf_size);

  926.         avctx->frame_number++;

  927.     }else

  928.         ret= 0;

  929.     return ret;

  930. }

  931. 

  932. /* decode a subtitle message. return -1 if error, otherwise return the

  933.    *number of bytes used. If no subtitle could be decompressed,

  934.    *got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */

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

  936.                             int *got_sub_ptr,

  937.                             const uint8_t *buf, int buf_size)

  938. {

  939.     int ret;

  940. 

  941.     *got_sub_ptr = 0;

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

  943.                                (uint8_t *)buf, buf_size);

  944.     if (*got_sub_ptr)

  945.         avctx->frame_number++;

  946.     return ret;

  947. }

  948. 

  949. int avcodec_close(AVCodecContext *avctx)

  950. {

  951.     entangled_thread_counter++;

  952.     if(entangled_thread_counter != 1){

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

  954.         entangled_thread_counter--;

  955.         return -1;

  956.     }

  957. 

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

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

  960.     avcodec_default_free_buffers(avctx);

  961.     av_freep(&avctx->priv_data);

  962.     avctx->codec = NULL;

  963.     entangled_thread_counter--;

  964.     return 0;

  965. }

  966. 

  967. AVCodec *avcodec_find_encoder(enum CodecID id)

  968. {

  969.     AVCodec *p;

  970.     p = first_avcodec;

  971.     while (p) {

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

  973.             return p;

  974.         p = p->next;

  975.     }

  976.     return NULL;

  977. }

  978. 

  979. AVCodec *avcodec_find_encoder_by_name(const char *name)

  980. {

  981.     AVCodec *p;

  982.     p = first_avcodec;

  983.     while (p) {

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

  985.             return p;

  986.         p = p->next;

  987.     }

  988.     return NULL;

  989. }

  990. 

  991. AVCodec *avcodec_find_decoder(enum CodecID id)

  992. {

  993.     AVCodec *p;

  994.     p = first_avcodec;

  995.     while (p) {

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

  997.             return p;

  998.         p = p->next;

  999.     }

  1000.     return NULL;

  1001. }

  1002. 

  1003. AVCodec *avcodec_find_decoder_by_name(const char *name)

  1004. {

  1005.     AVCodec *p;

  1006.     p = first_avcodec;

  1007.     while (p) {

  1008.         if (p->decode != NULL && strcmp(name,p->name) == 0)

  1009.             return p;

  1010.         p = p->next;

  1011.     }

  1012.     return NULL;

  1013. }

  1014. 

  1015. void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)

  1016. {

  1017.     const char *codec_name;

  1018.     AVCodec *p;

  1019.     char buf1[32];

  1020.     char channels_str[100];

  1021.     int bitrate;

  1022. 

  1023.     if (encode)

  1024.         p = avcodec_find_encoder(enc->codec_id);

  1025.     else

  1026.         p = avcodec_find_decoder(enc->codec_id);

  1027. 

  1028.     if (p) {

  1029.         codec_name = p->name;

  1030.         if (!encode && enc->codec_id == CODEC_ID_MP3) {

  1031.             if (enc->sub_id == 2)

  1032.                 codec_name = "mp2";

  1033.             else if (enc->sub_id == 1)

  1034.                 codec_name = "mp1";

  1035.         }

  1036.     } else if (enc->codec_id == CODEC_ID_MPEG2TS) {

  1037.         /* fake mpeg2 transport stream codec (currently not

  1038.            registered) */

  1039.         codec_name = "mpeg2ts";

  1040.     } else if (enc->codec_name[0] != '\0') {

  1041.         codec_name = enc->codec_name;

  1042.     } else {

  1043.         /* output avi tags */

  1044.         if(   isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)

  1045.            && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){

  1046.             snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",

  1047.                      enc->codec_tag & 0xff,

  1048.                      (enc->codec_tag >> 8) & 0xff,

  1049.                      (enc->codec_tag >> 16) & 0xff,

  1050.                      (enc->codec_tag >> 24) & 0xff,

  1051.                       enc->codec_tag);

  1052.         } else {

  1053.             snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);

  1054.         }

  1055.         codec_name = buf1;

  1056.     }

  1057. 

  1058.     switch(enc->codec_type) {

  1059.     case CODEC_TYPE_VIDEO:

  1060.         snprintf(buf, buf_size,

  1061.                  "Video: %s%s",

  1062.                  codec_name, enc->mb_decision ? " (hq)" : "");

  1063.         if (enc->pix_fmt != PIX_FMT_NONE) {

  1064.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1065.                      ", %s",

  1066.                      avcodec_get_pix_fmt_name(enc->pix_fmt));

  1067.         }

  1068.         if (enc->width) {

  1069.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1070.                      ", %dx%d",

  1071.                      enc->width, enc->height);

  1072.             if(av_log_get_level() >= AV_LOG_DEBUG){

  1073.                 int g= ff_gcd(enc->time_base.num, enc->time_base.den);

  1074.                 snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1075.                      ", %d/%d",

  1076.                      enc->time_base.num/g, enc->time_base.den/g);

  1077.             }

  1078.         }

  1079.         if (encode) {

  1080.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1081.                      ", q=%d-%d", enc->qmin, enc->qmax);

  1082.         }

  1083.         bitrate = enc->bit_rate;

  1084.         break;

  1085.     case CODEC_TYPE_AUDIO:

  1086.         snprintf(buf, buf_size,

  1087.                  "Audio: %s",

  1088.                  codec_name);

  1089.         switch (enc->channels) {

  1090.             case 1:

  1091.                 strcpy(channels_str, "mono");

  1092.                 break;

  1093.             case 2:

  1094.                 strcpy(channels_str, "stereo");

  1095.                 break;

  1096.             case 6:

  1097.                 strcpy(channels_str, "5:1");

  1098.                 break;

  1099.             default:

  1100.                 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);

  1101.                 break;

  1102.         }

  1103.         if (enc->sample_rate) {

  1104.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1105.                      ", %d Hz, %s",

  1106.                      enc->sample_rate,

  1107.                      channels_str);

  1108.         }

  1109. 

  1110.         /* for PCM codecs, compute bitrate directly */

  1111.         switch(enc->codec_id) {

  1112.         case CODEC_ID_PCM_S32LE:

  1113.         case CODEC_ID_PCM_S32BE:

  1114.         case CODEC_ID_PCM_U32LE:

  1115.         case CODEC_ID_PCM_U32BE:

  1116.             bitrate = enc->sample_rate * enc->channels * 32;

  1117.             break;

  1118.         case CODEC_ID_PCM_S24LE:

  1119.         case CODEC_ID_PCM_S24BE:

  1120.         case CODEC_ID_PCM_U24LE:

  1121.         case CODEC_ID_PCM_U24BE:

  1122.         case CODEC_ID_PCM_S24DAUD:

  1123.             bitrate = enc->sample_rate * enc->channels * 24;

  1124.             break;

  1125.         case CODEC_ID_PCM_S16LE:

  1126.         case CODEC_ID_PCM_S16BE:

  1127.         case CODEC_ID_PCM_U16LE:

  1128.         case CODEC_ID_PCM_U16BE:

  1129.             bitrate = enc->sample_rate * enc->channels * 16;

  1130.             break;

  1131.         case CODEC_ID_PCM_S8:

  1132.         case CODEC_ID_PCM_U8:

  1133.         case CODEC_ID_PCM_ALAW:

  1134.         case CODEC_ID_PCM_MULAW:

  1135.             bitrate = enc->sample_rate * enc->channels * 8;

  1136.             break;

  1137.         default:

  1138.             bitrate = enc->bit_rate;

  1139.             break;

  1140.         }

  1141.         break;

  1142.     case CODEC_TYPE_DATA:

  1143.         snprintf(buf, buf_size, "Data: %s", codec_name);

  1144.         bitrate = enc->bit_rate;

  1145.         break;

  1146.     case CODEC_TYPE_SUBTITLE:

  1147.         snprintf(buf, buf_size, "Subtitle: %s", codec_name);

  1148.         bitrate = enc->bit_rate;

  1149.         break;

  1150.     default:

  1151.         snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);

  1152.         return;

  1153.     }

  1154.     if (encode) {

  1155.         if (enc->flags & CODEC_FLAG_PASS1)

  1156.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1157.                      ", pass 1");

  1158.         if (enc->flags & CODEC_FLAG_PASS2)

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

  1160.                      ", pass 2");

  1161.     }

  1162.     if (bitrate != 0) {

  1163.         snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1164.                  ", %d kb/s", bitrate / 1000);

  1165.     }

  1166. }

  1167. 

  1168. unsigned avcodec_version( void )

  1169. {

  1170.   return LIBAVCODEC_VERSION_INT;

  1171. }

  1172. 

  1173. unsigned avcodec_build( void )

  1174. {

  1175.   return LIBAVCODEC_BUILD;

  1176. }

  1177. 

  1178. static void init_crcs(void){

  1179.     av_crc04C11DB7= av_mallocz_static(sizeof(AVCRC) * 257);

  1180.     av_crc8005    = av_mallocz_static(sizeof(AVCRC) * 257);

  1181.     av_crc07      = av_mallocz_static(sizeof(AVCRC) * 257);

  1182.     av_crc_init(av_crc04C11DB7, 0, 32, 0x04c11db7, sizeof(AVCRC)*257);

  1183.     av_crc_init(av_crc8005    , 0, 16, 0x8005    , sizeof(AVCRC)*257);

  1184.     av_crc_init(av_crc07      , 0,  8, 0x07      , sizeof(AVCRC)*257);

  1185. }

  1186. 

  1187. /* must be called before any other functions */

  1188. void avcodec_init(void)

  1189. {

  1190.     static int inited = 0;

  1191. 

  1192.     if (inited != 0)

  1193.         return;

  1194.     inited = 1;

  1195. 

  1196.     dsputil_static_init();

  1197.     init_crcs();

  1198. }

  1199. 

  1200. /**

  1201.  * Flush buffers, should be called when seeking or when swicthing to a different stream.

  1202.  */

  1203. void avcodec_flush_buffers(AVCodecContext *avctx)

  1204. {

  1205.     if(avctx->codec->flush)

  1206.         avctx->codec->flush(avctx);

  1207. }

  1208. 

  1209. void avcodec_default_free_buffers(AVCodecContext *s){

  1210.     int i, j;

  1211. 

  1212.     if(s->internal_buffer==NULL) return;

  1213. 

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

  1215.         InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];

  1216.         for(j=0; j<4; j++){

  1217.             av_freep(&buf->base[j]);

  1218.             buf->data[j]= NULL;

  1219.         }

  1220.     }

  1221.     av_freep(&s->internal_buffer);

  1222. 

  1223.     s->internal_buffer_count=0;

  1224. }

  1225. 

  1226. char av_get_pict_type_char(int pict_type){

  1227.     switch(pict_type){

  1228.     case I_TYPE: return 'I';

  1229.     case P_TYPE: return 'P';

  1230.     case B_TYPE: return 'B';

  1231.     case S_TYPE: return 'S';

  1232.     case SI_TYPE:return 'i';

  1233.     case SP_TYPE:return 'p';

  1234.     default:     return '?';

  1235.     }

  1236. }

  1237. 

  1238. int av_get_bits_per_sample(enum CodecID codec_id){

  1239.     switch(codec_id){

  1240.     case CODEC_ID_ADPCM_SBPRO_2:

  1241.         return 2;

  1242.     case CODEC_ID_ADPCM_SBPRO_3:

  1243.         return 3;

  1244.     case CODEC_ID_ADPCM_SBPRO_4:

  1245.     case CODEC_ID_ADPCM_CT:

  1246.         return 4;

  1247.     case CODEC_ID_PCM_ALAW:

  1248.     case CODEC_ID_PCM_MULAW:

  1249.     case CODEC_ID_PCM_S8:

  1250.     case CODEC_ID_PCM_U8:

  1251.         return 8;

  1252.     case CODEC_ID_PCM_S16BE:

  1253.     case CODEC_ID_PCM_S16LE:

  1254.     case CODEC_ID_PCM_U16BE:

  1255.     case CODEC_ID_PCM_U16LE:

  1256.         return 16;

  1257.     case CODEC_ID_PCM_S24DAUD:

  1258.     case CODEC_ID_PCM_S24BE:

  1259.     case CODEC_ID_PCM_S24LE:

  1260.     case CODEC_ID_PCM_U24BE:

  1261.     case CODEC_ID_PCM_U24LE:

  1262.         return 24;

  1263.     case CODEC_ID_PCM_S32BE:

  1264.     case CODEC_ID_PCM_S32LE:

  1265.     case CODEC_ID_PCM_U32BE:

  1266.     case CODEC_ID_PCM_U32LE:

  1267.         return 32;

  1268.     default:

  1269.         return 0;

  1270.     }

  1271. }

  1272. 

  1273. #if !defined(HAVE_THREADS)

  1274. int avcodec_thread_init(AVCodecContext *s, int thread_count){

  1275.     return -1;

  1276. }

  1277. #endif

  1278. 

  1279. unsigned int av_xiphlacing(unsigned char *s, unsigned int v)

  1280. {

  1281.     unsigned int n = 0;

  1282. 

  1283.     while(v >= 0xff) {

  1284.         *s++ = 0xff;

  1285.         v -= 0xff;

  1286.         n++;

  1287.     }

  1288.     *s = v;

  1289.     n++;

  1290.     return n;

  1291. }

  1292. 

  1293. /* Wrapper to work around the lack of mkstemp() on mingw/cygin.

  1294.  * Also, tries to create file in /tmp first, if possible.

  1295.  * *prefix can be a character constant; *filename will be allocated internally.

  1296.  * Returns file descriptor of opened file (or -1 on error)

  1297.  * and opened file name in **filename. */

  1298. int av_tempfile(char *prefix, char **filename) {

  1299.     int fd=-1;

  1300. #ifdef __MINGW32__

  1301.     *filename = tempnam(".", prefix);

  1302. #else

  1303.     size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */

  1304.     *filename = av_malloc(len);

  1305. #endif

  1306.     /* -----common section-----*/

  1307.     if (*filename == NULL) {

  1308.         av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");

  1309.         return -1;

  1310.     }

  1311. #ifdef __MINGW32__

  1312.     fd = open(*filename, _O_RDWR | _O_BINARY | _O_CREAT, 0444);

  1313. #else

  1314.     snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);

  1315.     fd = mkstemp(*filename);

  1316.     if (fd < 0) {

  1317.         snprintf(*filename, len, "./%sXXXXXX", prefix);

  1318.         fd = mkstemp(*filename);

  1319.     }

  1320. #endif

  1321.     /* -----common section-----*/

  1322.     if (fd < 0) {

  1323.         av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);

  1324.         return -1;

  1325.     }

  1326.     return fd; /* success */

  1327. }