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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 library is free software; you can redistribute it and/or

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

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

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

  10.  *

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

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

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

  14.  * Lesser General Public License for more details.

  15.  *

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

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

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

  19.  */

  20. 

  21. /**

  22.  * @file utils.c

  23.  * utils.

  24.  */

  25. 

  26. #include "avcodec.h"

  27. #include "dsputil.h"

  28. #include "mpegvideo.h"

  29. #include "integer.h"

  30. #include "opt.h"

  31. #include "crc.h"

  32. #include <stdarg.h>

  33. #include <limits.h>

  34. #include <float.h>

  35. #ifdef __MINGW32__

  36. #include <fcntl.h>

  37. #endif

  38. 

  39. const uint8_t ff_reverse[256]={

  40. 0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,

  41. 0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,

  42. 0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,

  43. 0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,

  44. 0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,

  45. 0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,

  46. 0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,

  47. 0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,

  48. 0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,

  49. 0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,

  50. 0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,

  51. 0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,

  52. 0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,

  53. 0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,

  54. 0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,

  55. 0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,

  56. };

  57. 

  58. static int volatile entangled_thread_counter=0;

  59. 

  60. /**

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

  62.  */

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

  64. {

  65.     if(min_size < *size)

  66.         return ptr;

  67. 

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

  69. 

  70.     return av_realloc(ptr, *size);

  71. }

  72. 

  73. static unsigned int last_static = 0;

  74. static unsigned int allocated_static = 0;

  75. static void** array_static = NULL;

  76. 

  77. /**

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

  79.  */

  80. void *av_mallocz_static(unsigned int size)

  81. {

  82.     void *ptr = av_mallocz(size);

  83. 

  84.     if(ptr){

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

  86.         if(!array_static)

  87.             return NULL;

  88.         array_static[last_static++] = ptr;

  89.     }

  90. 

  91.     return ptr;

  92. }

  93. 

  94. /**

  95.  * same as above, but does realloc

  96.  */

  97. 

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

  99. {

  100.     int i;

  101.     if(!ptr)

  102.       return av_mallocz_static(size);

  103.     /* Look for the old ptr */

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

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

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

  107.             return array_static[i];

  108.         }

  109.     }

  110.     return NULL;

  111. 

  112. }

  113. 

  114. /**

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

  116.  */

  117. void av_free_static(void)

  118. {

  119.     while(last_static){

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

  121.     }

  122.     av_freep(&array_static);

  123. }

  124. 

  125. /**

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

  127.  */

  128. 

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

  130. 

  131. static void do_free(void)

  132. {

  133.     av_free_static();

  134. }

  135. 

  136. 

  137. /* encoder management */

  138. AVCodec *first_avcodec = NULL;

  139. 

  140. void register_avcodec(AVCodec *format)

  141. {

  142.     AVCodec **p;

  143.     p = &first_avcodec;

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

  145.     *p = format;

  146.     format->next = NULL;

  147. }

  148. 

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

  150.     s->coded_width = width;

  151.     s->coded_height= height;

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

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

  154. }

  155. 

  156. typedef struct InternalBuffer{

  157.     int last_pic_num;

  158.     uint8_t *base[4];

  159.     uint8_t *data[4];

  160.     int linesize[4];

  161. }InternalBuffer;

  162. 

  163. #define INTERNAL_BUFFER_SIZE 32

  164. 

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

  166. 

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

  168.     int w_align= 1;

  169.     int h_align= 1;

  170. 

  171.     switch(s->pix_fmt){

  172.     case PIX_FMT_YUV420P:

  173.     case PIX_FMT_YUV422:

  174.     case PIX_FMT_UYVY422:

  175.     case PIX_FMT_YUV422P:

  176.     case PIX_FMT_YUV444P:

  177.     case PIX_FMT_GRAY8:

  178.     case PIX_FMT_YUVJ420P:

  179.     case PIX_FMT_YUVJ422P:

  180.     case PIX_FMT_YUVJ444P:

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

  182.         h_align= 16;

  183.         break;

  184.     case PIX_FMT_YUV411P:

  185.     case PIX_FMT_UYVY411:

  186.         w_align=32;

  187.         h_align=8;

  188.         break;

  189.     case PIX_FMT_YUV410P:

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

  191.             w_align=64;

  192.             h_align=64;

  193.         }

  194.     case PIX_FMT_RGB555:

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

  196.             w_align=4;

  197.             h_align=4;

  198.         }

  199.     case PIX_FMT_PAL8:

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

  201.             w_align=4;

  202.             h_align=4;

  203.         }

  204.         break;

  205.     case PIX_FMT_BGR24:

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

  207.             w_align=4;

  208.             h_align=4;

  209.         }

  210.         break;

  211.     default:

  212.         w_align= 1;

  213.         h_align= 1;

  214.         break;

  215.     }

  216. 

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

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

  219. }

  220. 

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

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

  223.         return 0;

  224. 

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

  226.     return -1;

  227. }

  228. 

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

  230.     int i;

  231.     int w= s->width;

  232.     int h= s->height;

  233.     InternalBuffer *buf;

  234.     int *picture_number;

  235. 

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

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

  238. 

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

  240.         return -1;

  241. 

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

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

  244.     }

  245. #if 0

  246.     s->internal_buffer= av_fast_realloc(

  247.         s->internal_buffer,

  248.         &s->internal_buffer_size,

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

  250.         );

  251. #endif

  252. 

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

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

  255.     (*picture_number)++;

  256. 

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

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

  259.         buf->last_pic_num= *picture_number;

  260.     }else{

  261.         int h_chroma_shift, v_chroma_shift;

  262.         int pixel_size, size[3];

  263.         AVPicture picture;

  264. 

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

  266. 

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

  268. 

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

  270.             w+= EDGE_WIDTH*2;

  271.             h+= EDGE_WIDTH*2;

  272.         }

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

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

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

  276.         assert(pixel_size>=1);

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

  278.         if(pixel_size == 3*8)

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

  280.         else

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

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

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

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

  285.         if(picture.data[2])

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

  287.         else

  288.             size[2]= 0;

  289. 

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

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

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

  293. 

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

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

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

  297. 

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

  299. 

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

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

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

  303. 

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

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

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

  307.             else

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

  309.         }

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

  311.     }

  312.     pic->type= FF_BUFFER_TYPE_INTERNAL;

  313. 

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

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

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

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

  318.     }

  319.     s->internal_buffer_count++;

  320. 

  321.     return 0;

  322. }

  323. 

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

  325.     int i;

  326.     InternalBuffer *buf, *last, temp;

  327. 

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

  329.     assert(s->internal_buffer_count);

  330. 

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

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

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

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

  335.             break;

  336.     }

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

  338.     s->internal_buffer_count--;

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

  340. 

  341.     temp= *buf;

  342.     *buf= *last;

  343.     *last= temp;

  344. 

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

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

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

  348.     }

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

  350. }

  351. 

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

  353.     AVFrame temp_pic;

  354.     int i;

  355. 

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

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

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

  359.         pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;

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

  361.     }

  362. 

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

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

  365.         return 0;

  366. 

  367.     /*

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

  369.      */

  370.     temp_pic = *pic;

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

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

  373.     pic->opaque = NULL;

  374.     /* Allocate new frame */

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

  376.         return -1;

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

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

  379.              s->height);

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

  381.     return 0;

  382. }

  383. 

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

  385.     int i;

  386. 

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

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

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

  390.     }

  391.     return 0;

  392. }

  393. 

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

  395.     return fmt[0];

  396. }

  397. 

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

  399.     AVCodecContext *avc= ptr;

  400. 

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

  402.         return avc->codec->name;

  403.     else

  404.         return "NULL";

  405. }

  406. 

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

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

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

  410. #define V AV_OPT_FLAG_VIDEO_PARAM

  411. #define A AV_OPT_FLAG_AUDIO_PARAM

  412. #define S AV_OPT_FLAG_SUBTITLE_PARAM

  413. #define E AV_OPT_FLAG_ENCODING_PARAM

  414. #define D AV_OPT_FLAG_DECODING_PARAM

  415. 

  416. #define AV_CODEC_DEFAULT_BITRATE 200*1000

  417. 

  418. static const AVOption options[]={

  419. {"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},

  420. {"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},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  443. {"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"},

  444. {"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"},

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

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

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

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

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

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

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

  452. {"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"},

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

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

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

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

  457. {"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"},

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

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

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

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

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

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

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

  465. {"ac", "set number of audio channels", OFFSET(channels), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX},

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

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

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

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

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

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

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

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

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

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

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

  477. {"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},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  509. {"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},

  510. {"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},

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

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

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

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

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

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

  517. {"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},

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

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

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

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

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

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

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

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

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

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

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

  529. {"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},

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

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

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

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

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

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

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

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

  538. {"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},

  539. {"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},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  623. #ifdef CONFIG_SNOW_ENCODER

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

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

  626. #endif

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  696. {"8x8dct", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_8X8DCT, INT_MIN, INT_MAX, V|E, "flags2"},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  721. {NULL},

  722. };

  723. 

  724. #undef A

  725. #undef V

  726. #undef S

  727. #undef E

  728. #undef D

  729. #undef DEFAULT

  730. 

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

  732. 

  733. void avcodec_get_context_defaults(AVCodecContext *s){

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

  735. 

  736.     s->av_class= &av_codec_context_class;

  737. 

  738.     av_opt_set_defaults(s);

  739. 

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

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

  742.     s->get_buffer= avcodec_default_get_buffer;

  743.     s->release_buffer= avcodec_default_release_buffer;

  744.     s->get_format= avcodec_default_get_format;

  745.     s->execute= avcodec_default_execute;

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

  747.     s->pix_fmt= PIX_FMT_NONE;

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

  749. 

  750.     s->palctrl = NULL;

  751.     s->reget_buffer= avcodec_default_reget_buffer;

  752. }

  753. 

  754. /**

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

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

  757.  */

  758. AVCodecContext *avcodec_alloc_context(void){

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

  760. 

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

  762. 

  763.     avcodec_get_context_defaults(avctx);

  764. 

  765.     return avctx;

  766. }

  767. 

  768. void avcodec_get_frame_defaults(AVFrame *pic){

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

  770. 

  771.     pic->pts= AV_NOPTS_VALUE;

  772.     pic->key_frame= 1;

  773. }

  774. 

  775. /**

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

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

  778.  */

  779. AVFrame *avcodec_alloc_frame(void){

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

  781. 

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

  783. 

  784.     avcodec_get_frame_defaults(pic);

  785. 

  786.     return pic;

  787. }

  788. 

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

  790. {

  791.     int ret= -1;

  792. 

  793.     entangled_thread_counter++;

  794.     if(entangled_thread_counter != 1){

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

  796.         goto end;

  797.     }

  798. 

  799.     if(avctx->codec)

  800.         goto end;

  801. 

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

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

  804.         if (!avctx->priv_data)

  805.             goto end;

  806.     } else {

  807.         avctx->priv_data = NULL;

  808.     }

  809. 

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

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

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

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

  814. 

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

  816.         av_freep(&avctx->priv_data);

  817.         goto end;

  818.     }

  819. 

  820.     avctx->codec = codec;

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

  822.     avctx->frame_number = 0;

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

  824.     if (ret < 0) {

  825.         av_freep(&avctx->priv_data);

  826.         avctx->codec= NULL;

  827.         goto end;

  828.     }

  829.     ret=0;

  830. end:

  831.     entangled_thread_counter--;

  832.     return ret;

  833. }

  834. 

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

  836.                          const short *samples)

  837. {

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

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

  840.         return -1;

  841.     }

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

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

  844.         avctx->frame_number++;

  845.         return ret;

  846.     }else

  847.         return 0;

  848. }

  849. 

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

  851.                          const AVFrame *pict)

  852. {

  853.     if(buf_size < FF_MIN_BUFFER_SIZE){

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

  855.         return -1;

  856.     }

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

  858.         return -1;

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

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

  861.         avctx->frame_number++;

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

  863. 

  864.         return ret;

  865.     }else

  866.         return 0;

  867. }

  868. 

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

  870.                             const AVSubtitle *sub)

  871. {

  872.     int ret;

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

  874.     avctx->frame_number++;

  875.     return ret;

  876. }

  877. 

  878. /**

  879.  * decode a frame.

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

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

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

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

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

  885.  * bytes used.

  886.  */

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

  888.                          int *got_picture_ptr,

  889.                          uint8_t *buf, int buf_size)

  890. {

  891.     int ret;

  892. 

  893.     *got_picture_ptr= 0;

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

  895.         return -1;

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

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

  898.                                 buf, buf_size);

  899. 

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

  901. 

  902.         if (*got_picture_ptr)

  903.             avctx->frame_number++;

  904.     }else

  905.         ret= 0;

  906. 

  907.     return ret;

  908. }

  909. 

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

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

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

  913.    *size in BYTES. */

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

  915.                          int *frame_size_ptr,

  916.                          uint8_t *buf, int buf_size)

  917. {

  918.     int ret;

  919. 

  920.     *frame_size_ptr= 0;

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

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

  923.                                 buf, buf_size);

  924.         avctx->frame_number++;

  925.     }else

  926.         ret= 0;

  927.     return ret;

  928. }

  929. 

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

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

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

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

  934.                             int *got_sub_ptr,

  935.                             const uint8_t *buf, int buf_size)

  936. {

  937.     int ret;

  938. 

  939.     *got_sub_ptr = 0;

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

  941.                                (uint8_t *)buf, buf_size);

  942.     if (*got_sub_ptr)

  943.         avctx->frame_number++;

  944.     return ret;

  945. }

  946. 

  947. int avcodec_close(AVCodecContext *avctx)

  948. {

  949.     entangled_thread_counter++;

  950.     if(entangled_thread_counter != 1){

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

  952.         entangled_thread_counter--;

  953.         return -1;

  954.     }

  955. 

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

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

  958.     avcodec_default_free_buffers(avctx);

  959.     av_freep(&avctx->priv_data);

  960.     avctx->codec = NULL;

  961.     entangled_thread_counter--;

  962.     return 0;

  963. }

  964. 

  965. AVCodec *avcodec_find_encoder(enum CodecID id)

  966. {

  967.     AVCodec *p;

  968.     p = first_avcodec;

  969.     while (p) {

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

  971.             return p;

  972.         p = p->next;

  973.     }

  974.     return NULL;

  975. }

  976. 

  977. AVCodec *avcodec_find_encoder_by_name(const char *name)

  978. {

  979.     AVCodec *p;

  980.     p = first_avcodec;

  981.     while (p) {

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

  983.             return p;

  984.         p = p->next;

  985.     }

  986.     return NULL;

  987. }

  988. 

  989. AVCodec *avcodec_find_decoder(enum CodecID id)

  990. {

  991.     AVCodec *p;

  992.     p = first_avcodec;

  993.     while (p) {

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

  995.             return p;

  996.         p = p->next;

  997.     }

  998.     return NULL;

  999. }

  1000. 

  1001. AVCodec *avcodec_find_decoder_by_name(const char *name)

  1002. {

  1003.     AVCodec *p;

  1004.     p = first_avcodec;

  1005.     while (p) {

  1006.         if (p->decode != NULL && strcmp(name,p->name) == 0)

  1007.             return p;

  1008.         p = p->next;

  1009.     }

  1010.     return NULL;

  1011. }

  1012. 

  1013. void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)

  1014. {

  1015.     const char *codec_name;

  1016.     AVCodec *p;

  1017.     char buf1[32];

  1018.     char channels_str[100];

  1019.     int bitrate;

  1020. 

  1021.     if (encode)

  1022.         p = avcodec_find_encoder(enc->codec_id);

  1023.     else

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

  1025. 

  1026.     if (p) {

  1027.         codec_name = p->name;

  1028.         if (!encode && enc->codec_id == CODEC_ID_MP3) {

  1029.             if (enc->sub_id == 2)

  1030.                 codec_name = "mp2";

  1031.             else if (enc->sub_id == 1)

  1032.                 codec_name = "mp1";

  1033.         }

  1034.     } else if (enc->codec_id == CODEC_ID_MPEG2TS) {

  1035.         /* fake mpeg2 transport stream codec (currently not

  1036.            registered) */

  1037.         codec_name = "mpeg2ts";

  1038.     } else if (enc->codec_name[0] != '\0') {

  1039.         codec_name = enc->codec_name;

  1040.     } else {

  1041.         /* output avi tags */

  1042.         if(   isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)

  1043.            && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){

  1044.             snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",

  1045.                      enc->codec_tag & 0xff,

  1046.                      (enc->codec_tag >> 8) & 0xff,

  1047.                      (enc->codec_tag >> 16) & 0xff,

  1048.                      (enc->codec_tag >> 24) & 0xff,

  1049.                       enc->codec_tag);

  1050.         } else {

  1051.             snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);

  1052.         }

  1053.         codec_name = buf1;

  1054.     }

  1055. 

  1056.     switch(enc->codec_type) {

  1057.     case CODEC_TYPE_VIDEO:

  1058.         snprintf(buf, buf_size,

  1059.                  "Video: %s%s",

  1060.                  codec_name, enc->mb_decision ? " (hq)" : "");

  1061.         if (enc->pix_fmt != PIX_FMT_NONE) {

  1062.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1063.                      ", %s",

  1064.                      avcodec_get_pix_fmt_name(enc->pix_fmt));

  1065.         }

  1066.         if (enc->width) {

  1067.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1068.                      ", %dx%d",

  1069.                      enc->width, enc->height);

  1070.             if(av_log_get_level() >= AV_LOG_DEBUG){

  1071.                 int g= ff_gcd(enc->time_base.num, enc->time_base.den);

  1072.                 snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1073.                      ", %d/%d",

  1074.                      enc->time_base.num/g, enc->time_base.den/g);

  1075.             }

  1076.         }

  1077.         if (encode) {

  1078.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1079.                      ", q=%d-%d", enc->qmin, enc->qmax);

  1080.         }

  1081.         bitrate = enc->bit_rate;

  1082.         break;

  1083.     case CODEC_TYPE_AUDIO:

  1084.         snprintf(buf, buf_size,

  1085.                  "Audio: %s",

  1086.                  codec_name);

  1087.         switch (enc->channels) {

  1088.             case 1:

  1089.                 strcpy(channels_str, "mono");

  1090.                 break;

  1091.             case 2:

  1092.                 strcpy(channels_str, "stereo");

  1093.                 break;

  1094.             case 6:

  1095.                 strcpy(channels_str, "5:1");

  1096.                 break;

  1097.             default:

  1098.                 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);

  1099.                 break;

  1100.         }

  1101.         if (enc->sample_rate) {

  1102.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1103.                      ", %d Hz, %s",

  1104.                      enc->sample_rate,

  1105.                      channels_str);

  1106.         }

  1107. 

  1108.         /* for PCM codecs, compute bitrate directly */

  1109.         switch(enc->codec_id) {

  1110.         case CODEC_ID_PCM_S32LE:

  1111.         case CODEC_ID_PCM_S32BE:

  1112.         case CODEC_ID_PCM_U32LE:

  1113.         case CODEC_ID_PCM_U32BE:

  1114.             bitrate = enc->sample_rate * enc->channels * 32;

  1115.             break;

  1116.         case CODEC_ID_PCM_S24LE:

  1117.         case CODEC_ID_PCM_S24BE:

  1118.         case CODEC_ID_PCM_U24LE:

  1119.         case CODEC_ID_PCM_U24BE:

  1120.         case CODEC_ID_PCM_S24DAUD:

  1121.             bitrate = enc->sample_rate * enc->channels * 24;

  1122.             break;

  1123.         case CODEC_ID_PCM_S16LE:

  1124.         case CODEC_ID_PCM_S16BE:

  1125.         case CODEC_ID_PCM_U16LE:

  1126.         case CODEC_ID_PCM_U16BE:

  1127.             bitrate = enc->sample_rate * enc->channels * 16;

  1128.             break;

  1129.         case CODEC_ID_PCM_S8:

  1130.         case CODEC_ID_PCM_U8:

  1131.         case CODEC_ID_PCM_ALAW:

  1132.         case CODEC_ID_PCM_MULAW:

  1133.             bitrate = enc->sample_rate * enc->channels * 8;

  1134.             break;

  1135.         default:

  1136.             bitrate = enc->bit_rate;

  1137.             break;

  1138.         }

  1139.         break;

  1140.     case CODEC_TYPE_DATA:

  1141.         snprintf(buf, buf_size, "Data: %s", codec_name);

  1142.         bitrate = enc->bit_rate;

  1143.         break;

  1144.     case CODEC_TYPE_SUBTITLE:

  1145.         snprintf(buf, buf_size, "Subtitle: %s", codec_name);

  1146.         bitrate = enc->bit_rate;

  1147.         break;

  1148.     default:

  1149.         snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);

  1150.         return;

  1151.     }

  1152.     if (encode) {

  1153.         if (enc->flags & CODEC_FLAG_PASS1)

  1154.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1155.                      ", pass 1");

  1156.         if (enc->flags & CODEC_FLAG_PASS2)

  1157.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1158.                      ", pass 2");

  1159.     }

  1160.     if (bitrate != 0) {

  1161.         snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1162.                  ", %d kb/s", bitrate / 1000);

  1163.     }

  1164. }

  1165. 

  1166. unsigned avcodec_version( void )

  1167. {

  1168.   return LIBAVCODEC_VERSION_INT;

  1169. }

  1170. 

  1171. unsigned avcodec_build( void )

  1172. {

  1173.   return LIBAVCODEC_BUILD;

  1174. }

  1175. 

  1176. static void init_crcs(void){

  1177.     av_crc04C11DB7= av_mallocz_static(sizeof(AVCRC) * 257);

  1178.     av_crc8005    = av_mallocz_static(sizeof(AVCRC) * 257);

  1179.     av_crc07      = av_mallocz_static(sizeof(AVCRC) * 257);

  1180.     av_crc_init(av_crc04C11DB7, 0, 32, 0x04c11db7, sizeof(AVCRC)*257);

  1181.     av_crc_init(av_crc8005    , 0, 16, 0x8005    , sizeof(AVCRC)*257);

  1182.     av_crc_init(av_crc07      , 0,  8, 0x07      , sizeof(AVCRC)*257);

  1183. }

  1184. 

  1185. /* must be called before any other functions */

  1186. void avcodec_init(void)

  1187. {

  1188.     static int inited = 0;

  1189. 

  1190.     if (inited != 0)

  1191.         return;

  1192.     inited = 1;

  1193. 

  1194.     dsputil_static_init();

  1195.     init_crcs();

  1196. }

  1197. 

  1198. /**

  1199.  * Flush buffers, should be called when seeking or when swicthing to a different stream.

  1200.  */

  1201. void avcodec_flush_buffers(AVCodecContext *avctx)

  1202. {

  1203.     if(avctx->codec->flush)

  1204.         avctx->codec->flush(avctx);

  1205. }

  1206. 

  1207. void avcodec_default_free_buffers(AVCodecContext *s){

  1208.     int i, j;

  1209. 

  1210.     if(s->internal_buffer==NULL) return;

  1211. 

  1212.     for(i=0; i<INTERNAL_BUFFER_SIZE; i++){

  1213.         InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];

  1214.         for(j=0; j<4; j++){

  1215.             av_freep(&buf->base[j]);

  1216.             buf->data[j]= NULL;

  1217.         }

  1218.     }

  1219.     av_freep(&s->internal_buffer);

  1220. 

  1221.     s->internal_buffer_count=0;

  1222. }

  1223. 

  1224. char av_get_pict_type_char(int pict_type){

  1225.     switch(pict_type){

  1226.     case I_TYPE: return 'I';

  1227.     case P_TYPE: return 'P';

  1228.     case B_TYPE: return 'B';

  1229.     case S_TYPE: return 'S';

  1230.     case SI_TYPE:return 'i';

  1231.     case SP_TYPE:return 'p';

  1232.     default:     return '?';

  1233.     }

  1234. }

  1235. 

  1236. int av_get_bits_per_sample(enum CodecID codec_id){

  1237.     switch(codec_id){

  1238.     case CODEC_ID_ADPCM_SBPRO_2:

  1239.         return 2;

  1240.     case CODEC_ID_ADPCM_SBPRO_3:

  1241.         return 3;

  1242.     case CODEC_ID_ADPCM_SBPRO_4:

  1243.     case CODEC_ID_ADPCM_CT:

  1244.         return 4;

  1245.     case CODEC_ID_PCM_ALAW:

  1246.     case CODEC_ID_PCM_MULAW:

  1247.     case CODEC_ID_PCM_S8:

  1248.     case CODEC_ID_PCM_U8:

  1249.         return 8;

  1250.     case CODEC_ID_PCM_S16BE:

  1251.     case CODEC_ID_PCM_S16LE:

  1252.     case CODEC_ID_PCM_U16BE:

  1253.     case CODEC_ID_PCM_U16LE:

  1254.         return 16;

  1255.     case CODEC_ID_PCM_S24DAUD:

  1256.     case CODEC_ID_PCM_S24BE:

  1257.     case CODEC_ID_PCM_S24LE:

  1258.     case CODEC_ID_PCM_U24BE:

  1259.     case CODEC_ID_PCM_U24LE:

  1260.         return 24;

  1261.     case CODEC_ID_PCM_S32BE:

  1262.     case CODEC_ID_PCM_S32LE:

  1263.     case CODEC_ID_PCM_U32BE:

  1264.     case CODEC_ID_PCM_U32LE:

  1265.         return 32;

  1266.     default:

  1267.         return 0;

  1268.     }

  1269. }

  1270. 

  1271. #if !defined(HAVE_THREADS)

  1272. int avcodec_thread_init(AVCodecContext *s, int thread_count){

  1273.     return -1;

  1274. }

  1275. #endif

  1276. 

  1277. unsigned int av_xiphlacing(unsigned char *s, unsigned int v)

  1278. {

  1279.     unsigned int n = 0;

  1280. 

  1281.     while(v >= 0xff) {

  1282.         *s++ = 0xff;

  1283.         v -= 0xff;

  1284.         n++;

  1285.     }

  1286.     *s = v;

  1287.     n++;

  1288.     return n;

  1289. }

  1290. 

  1291. /* Wrapper to work around the lack of mkstemp() on mingw/cygin.

  1292.  * Also, tries to create file in /tmp first, if possible.

  1293.  * *prefix can be a character constant; *filename will be allocated internally.

  1294.  * Returns file descriptor of opened file (or -1 on error)

  1295.  * and opened file name in **filename. */

  1296. int av_tempfile(char *prefix, char **filename) {

  1297.     int fd=-1;

  1298. #ifdef __MINGW32__

  1299.     *filename = tempnam(".", prefix);

  1300. #else

  1301.     size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */

  1302.     *filename = av_malloc(len);

  1303. #endif

  1304.     /* -----common section-----*/

  1305.     if (*filename == NULL) {

  1306.         av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");

  1307.         return -1;

  1308.     }

  1309. #ifdef __MINGW32__

  1310.     fd = open(*filename, _O_RDWR | _O_BINARY | _O_CREAT, 0444);

  1311. #else

  1312.     snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);

  1313.     fd = mkstemp(*filename);

  1314.     if (fd < 0) {

  1315.         snprintf(*filename, len, "./%sXXXXXX", prefix);

  1316.         fd = mkstemp(*filename);

  1317.     }

  1318. #endif

  1319.     /* -----common section-----*/

  1320.     if (fd < 0) {

  1321.         av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);

  1322.         return -1;

  1323.     }

  1324.     return fd; /* success */

  1325. }