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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) 2003 Michel Bardiaux for the av_log API

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

  6.  *

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

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

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

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

  11.  *

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

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

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

  15.  * Lesser General Public License for more details.

  16.  *

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

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

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

  20.  */

  21. 

  22. /**

  23.  * @file utils.c

  24.  * utils.

  25.  */

  26. 

  27. #include "avcodec.h"

  28. #include "dsputil.h"

  29. #include "mpegvideo.h"

  30. #include "integer.h"

  31. #include "opt.h"

  32. #include <stdarg.h>

  33. #include <limits.h>

  34. #include <float.h>

  35. 

  36. const uint8_t ff_reverse[256]={

  37. 0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,

  38. 0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,

  39. 0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,

  40. 0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,

  41. 0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,

  42. 0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,

  43. 0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,

  44. 0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,

  45. 0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,

  46. 0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,

  47. 0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,

  48. 0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,

  49. 0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,

  50. 0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,

  51. 0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,

  52. 0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,

  53. };

  54. 

  55. static int volatile entangled_thread_counter=0;

  56. 

  57. void avcodec_default_free_buffers(AVCodecContext *s);

  58. 

  59. void *av_mallocz(unsigned int size)

  60. {

  61.     void *ptr;

  62. 

  63.     ptr = av_malloc(size);

  64.     if (!ptr)

  65.         return NULL;

  66.     memset(ptr, 0, size);

  67.     return ptr;

  68. }

  69. 

  70. char *av_strdup(const char *s)

  71. {

  72.     char *ptr;

  73.     int len;

  74.     len = strlen(s) + 1;

  75.     ptr = av_malloc(len);

  76.     if (!ptr)

  77.         return NULL;

  78.     memcpy(ptr, s, len);

  79.     return ptr;

  80. }

  81. 

  82. /**

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

  84.  */

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

  86. {

  87.     if(min_size < *size)

  88.         return ptr;

  89. 

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

  91. 

  92.     return av_realloc(ptr, *size);

  93. }

  94. 

  95. 

  96. static unsigned int last_static = 0;

  97. static unsigned int allocated_static = 0;

  98. static void** array_static = NULL;

  99. 

  100. /**

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

  102.  */

  103. void *av_mallocz_static(unsigned int size)

  104. {

  105.     void *ptr = av_mallocz(size);

  106. 

  107.     if(ptr){

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

  109.         if(!array_static)

  110.             return NULL;

  111.         array_static[last_static++] = ptr;

  112.     }

  113. 

  114.     return ptr;

  115. }

  116. 

  117. /**

  118.  * same as above, but does realloc

  119.  */

  120. 

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

  122. {

  123.     int i;

  124.     if(!ptr)

  125.       return av_mallocz_static(size);

  126.     /* Look for the old ptr */

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

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

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

  130.             return array_static[i];

  131.         }

  132.     }

  133.     return NULL;

  134. 

  135. }

  136. 

  137. /**

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

  139.  */

  140. void av_free_static(void)

  141. {

  142.     while(last_static){

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

  144.     }

  145.     av_freep(&array_static);

  146. }

  147. 

  148. /**

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

  150.  */

  151. 

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

  153. 

  154. static void do_free()

  155. {

  156.     av_free_static();

  157. }

  158. 

  159. /**

  160.  * Frees memory and sets the pointer to NULL.

  161.  * @param arg pointer to the pointer which should be freed

  162.  */

  163. void av_freep(void *arg)

  164. {

  165.     void **ptr= (void**)arg;

  166.     av_free(*ptr);

  167.     *ptr = NULL;

  168. }

  169. 

  170. /* encoder management */

  171. AVCodec *first_avcodec = NULL;

  172. 

  173. void register_avcodec(AVCodec *format)

  174. {

  175.     AVCodec **p;

  176.     p = &first_avcodec;

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

  178.     *p = format;

  179.     format->next = NULL;

  180. }

  181. 

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

  183.     s->coded_width = width;

  184.     s->coded_height= height;

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

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

  187. }

  188. 

  189. typedef struct InternalBuffer{

  190.     int last_pic_num;

  191.     uint8_t *base[4];

  192.     uint8_t *data[4];

  193.     int linesize[4];

  194. }InternalBuffer;

  195. 

  196. #define INTERNAL_BUFFER_SIZE 32

  197. 

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

  199. 

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

  201.     int w_align= 1;

  202.     int h_align= 1;

  203. 

  204.     switch(s->pix_fmt){

  205.     case PIX_FMT_YUV420P:

  206.     case PIX_FMT_YUV422:

  207.     case PIX_FMT_UYVY422:

  208.     case PIX_FMT_YUV422P:

  209.     case PIX_FMT_YUV444P:

  210.     case PIX_FMT_GRAY8:

  211.     case PIX_FMT_YUVJ420P:

  212.     case PIX_FMT_YUVJ422P:

  213.     case PIX_FMT_YUVJ444P:

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

  215.         h_align= 16;

  216.         break;

  217.     case PIX_FMT_YUV411P:

  218.     case PIX_FMT_UYVY411:

  219.         w_align=32;

  220.         h_align=8;

  221.         break;

  222.     case PIX_FMT_YUV410P:

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

  224.             w_align=64;

  225.             h_align=64;

  226.         }

  227.     case PIX_FMT_RGB555:

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

  229.             w_align=4;

  230.             h_align=4;

  231.         }

  232.     case PIX_FMT_PAL8:

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

  234.             w_align=4;

  235.             h_align=4;

  236.         }

  237.         break;

  238.     case PIX_FMT_BGR24:

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

  240.             w_align=4;

  241.             h_align=4;

  242.         }

  243.         break;

  244.     default:

  245.         w_align= 1;

  246.         h_align= 1;

  247.         break;

  248.     }

  249. 

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

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

  252. }

  253. 

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

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

  256.         return 0;

  257. 

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

  259.     return -1;

  260. }

  261. 

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

  263.     int i;

  264.     int w= s->width;

  265.     int h= s->height;

  266.     InternalBuffer *buf;

  267.     int *picture_number;

  268. 

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

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

  271. 

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

  273.         return -1;

  274. 

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

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

  277.     }

  278. #if 0

  279.     s->internal_buffer= av_fast_realloc(

  280.         s->internal_buffer,

  281.         &s->internal_buffer_size,

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

  283.         );

  284. #endif

  285. 

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

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

  288.     (*picture_number)++;

  289. 

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

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

  292.         buf->last_pic_num= *picture_number;

  293.     }else{

  294.         int h_chroma_shift, v_chroma_shift;

  295.         int pixel_size, size[3];

  296.         AVPicture picture;

  297. 

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

  299. 

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

  301. 

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

  303.             w+= EDGE_WIDTH*2;

  304.             h+= EDGE_WIDTH*2;

  305.         }

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

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

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

  309.         assert(pixel_size>=1);

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

  311.         if(pixel_size == 3*8)

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

  313.         else

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

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

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

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

  318.         if(picture.data[2])

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

  320.         else

  321.             size[2]= 0;

  322. 

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

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

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

  326. 

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

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

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

  330. 

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

  332. 

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

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

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

  336. 

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

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

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

  340.             else

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

  342.         }

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

  344.     }

  345.     pic->type= FF_BUFFER_TYPE_INTERNAL;

  346. 

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

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

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

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

  351.     }

  352.     s->internal_buffer_count++;

  353. 

  354.     return 0;

  355. }

  356. 

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

  358.     int i;

  359.     InternalBuffer *buf, *last, temp;

  360. 

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

  362.     assert(s->internal_buffer_count);

  363. 

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

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

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

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

  368.             break;

  369.     }

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

  371.     s->internal_buffer_count--;

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

  373. 

  374.     temp= *buf;

  375.     *buf= *last;

  376.     *last= temp;

  377. 

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

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

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

  381.     }

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

  383. }

  384. 

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

  386.     AVFrame temp_pic;

  387.     int i;

  388. 

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

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

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

  392.         pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;

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

  394.     }

  395. 

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

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

  398.         return 0;

  399. 

  400.     /*

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

  402.      */

  403.     temp_pic = *pic;

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

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

  406.     pic->opaque = NULL;

  407.     /* Allocate new frame */

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

  409.         return -1;

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

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

  412.              s->height);

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

  414.     return 0;

  415. }

  416. 

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

  418.     int i;

  419. 

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

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

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

  423.     }

  424.     return 0;

  425. }

  426. 

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

  428.     return fmt[0];

  429. }

  430. 

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

  432.     AVCodecContext *avc= ptr;

  433. 

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

  435.         return avc->codec->name;

  436.     else

  437.         return "NULL";

  438. }

  439. 

  440. #define OFFSET(x) (int)&((AVCodecContext*)0)->x

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

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

  443. #define V AV_OPT_FLAG_VIDEO_PARAM

  444. #define A AV_OPT_FLAG_AUDIO_PARAM

  445. #define S AV_OPT_FLAG_SUBTITLE_PARAM

  446. #define E AV_OPT_FLAG_ENCODING_PARAM

  447. #define D AV_OPT_FLAG_DECODING_PARAM

  448. 

  449. static AVOption options[]={

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  474. {"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"},

  475. {"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"},

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

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

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

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

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

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

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

  483. {"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"},

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

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

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

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

  488. {"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"},

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

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

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

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

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

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

  495. {"sample_rate", NULL, OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  496. {"channels", NULL, OFFSET(channels), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

  497. {"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

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

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

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

  501. {"qcompress", NULL, OFFSET(qcompress), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},

  502. {"qblur", NULL, OFFSET(qblur), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},

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

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

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

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

  507. {"b_quant_factor", NULL, OFFSET(b_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  523. {"bugs", NULL, OFFSET(workaround_bugs), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "bug"},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  539. {"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},

  540. {"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},

  541. {"strict", NULL, OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "strict"},

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

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

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

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

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

  547. {"b_quant_offset", NULL, OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},

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

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

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

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

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

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

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

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

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

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

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

  559. {"rc_qsquish", NULL, OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},

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

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

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

  563. {"rc_eq", NULL, OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX, V|E},

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

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

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

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

  568. {"i_quant_factor", NULL, OFFSET(i_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},

  569. {"i_quant_offset", NULL, OFFSET(i_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},

  570. {"rc_initial_cplx", NULL, OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  639. {"preme", NULL, OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  660. {"ibias", NULL, OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

  661. {"pbias", NULL, OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  682. {"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX},

  683. {"error_rate", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

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

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

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

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

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

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

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

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

  692. {"mb_threshold", NULL, OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  712. {NULL},

  713. };

  714. 

  715. #undef A

  716. #undef V

  717. 

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

  719. 

  720. void avcodec_get_context_defaults(AVCodecContext *s){

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

  722. 

  723.     s->av_class= &av_codec_context_class;

  724.     s->bit_rate= 800*1000;

  725.     s->bit_rate_tolerance= s->bit_rate*10;

  726.     s->qmin= 2;

  727.     s->qmax= 31;

  728.     s->mb_lmin= FF_QP2LAMBDA * 2;

  729.     s->mb_lmax= FF_QP2LAMBDA * 31;

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

  731.     s->qcompress= 0.5;

  732.     s->max_qdiff= 3;

  733.     s->b_quant_factor=1.25;

  734.     s->b_quant_offset=1.25;

  735.     s->i_quant_factor=-0.8;

  736.     s->i_quant_offset=0.0;

  737.     s->error_concealment= 3;

  738.     s->error_resilience= 1;

  739.     s->workaround_bugs= FF_BUG_AUTODETECT;

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

  741.     s->gop_size= 50;

  742.     s->me_method= ME_EPZS;

  743.     s->get_buffer= avcodec_default_get_buffer;

  744.     s->release_buffer= avcodec_default_release_buffer;

  745.     s->get_format= avcodec_default_get_format;

  746.     s->execute= avcodec_default_execute;

  747.     s->thread_count=1;

  748.     s->me_subpel_quality=8;

  749.     s->lmin= FF_QP2LAMBDA * s->qmin;

  750.     s->lmax= FF_QP2LAMBDA * s->qmax;

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

  752.     s->ildct_cmp= FF_CMP_VSAD;

  753.     s->profile= FF_PROFILE_UNKNOWN;

  754.     s->level= FF_LEVEL_UNKNOWN;

  755.     s->me_penalty_compensation= 256;

  756.     s->pix_fmt= PIX_FMT_NONE;

  757.     s->frame_skip_cmp= FF_CMP_DCTMAX;

  758.     s->nsse_weight= 8;

  759. 

  760.     s->intra_quant_bias= FF_DEFAULT_QUANT_BIAS;

  761.     s->inter_quant_bias= FF_DEFAULT_QUANT_BIAS;

  762.     s->palctrl = NULL;

  763.     s->reget_buffer= avcodec_default_reget_buffer;

  764. }

  765. 

  766. /**

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

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

  769.  */

  770. AVCodecContext *avcodec_alloc_context(void){

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

  772. 

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

  774. 

  775.     avcodec_get_context_defaults(avctx);

  776. 

  777.     return avctx;

  778. }

  779. 

  780. void avcodec_get_frame_defaults(AVFrame *pic){

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

  782. 

  783.     pic->pts= AV_NOPTS_VALUE;

  784.     pic->key_frame= 1;

  785. }

  786. 

  787. /**

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

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

  790.  */

  791. AVFrame *avcodec_alloc_frame(void){

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

  793. 

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

  795. 

  796.     avcodec_get_frame_defaults(pic);

  797. 

  798.     return pic;

  799. }

  800. 

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

  802. {

  803.     int ret= -1;

  804. 

  805.     entangled_thread_counter++;

  806.     if(entangled_thread_counter != 1){

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

  808.         goto end;

  809.     }

  810. 

  811.     if(avctx->codec)

  812.         goto end;

  813. 

  814.     avctx->codec = codec;

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

  816.     avctx->frame_number = 0;

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

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

  819.         if (!avctx->priv_data)

  820.             goto end;

  821.     } else {

  822.         avctx->priv_data = NULL;

  823.     }

  824. 

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

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

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

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

  829. 

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

  831.         av_freep(&avctx->priv_data);

  832.         goto end;

  833.     }

  834. 

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

  836.     if (ret < 0) {

  837.         av_freep(&avctx->priv_data);

  838.         goto end;

  839.     }

  840.     ret=0;

  841. end:

  842.     entangled_thread_counter--;

  843.     return ret;

  844. }

  845. 

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

  847.                          const short *samples)

  848. {

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

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

  851.         return -1;

  852.     }

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

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

  855.         avctx->frame_number++;

  856.         return ret;

  857.     }else

  858.         return 0;

  859. }

  860. 

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

  862.                          const AVFrame *pict)

  863. {

  864.     if(buf_size < FF_MIN_BUFFER_SIZE){

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

  866.         return -1;

  867.     }

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

  869.         return -1;

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

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

  872.         avctx->frame_number++;

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

  874. 

  875.         return ret;

  876.     }else

  877.         return 0;

  878. }

  879. 

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

  881.                             const AVSubtitle *sub)

  882. {

  883.     int ret;

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

  885.     avctx->frame_number++;

  886.     return ret;

  887. }

  888. 

  889. /**

  890.  * decode a frame.

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

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

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

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

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

  896.  * bytes used.

  897.  */

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

  899.                          int *got_picture_ptr,

  900.                          uint8_t *buf, int buf_size)

  901. {

  902.     int ret;

  903. 

  904.     *got_picture_ptr= 0;

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

  906.         return -1;

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

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

  909.                                 buf, buf_size);

  910. 

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

  912. 

  913.         if (*got_picture_ptr)

  914.             avctx->frame_number++;

  915.     }else

  916.         ret= 0;

  917. 

  918.     return ret;

  919. }

  920. 

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

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

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

  924.    *size in BYTES. */

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

  926.                          int *frame_size_ptr,

  927.                          uint8_t *buf, int buf_size)

  928. {

  929.     int ret;

  930. 

  931.     *frame_size_ptr= 0;

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

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

  934.                                 buf, buf_size);

  935.         avctx->frame_number++;

  936.     }else

  937.         ret= 0;

  938.     return ret;

  939. }

  940. 

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

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

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

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

  945.                             int *got_sub_ptr,

  946.                             const uint8_t *buf, int buf_size)

  947. {

  948.     int ret;

  949. 

  950.     *got_sub_ptr = 0;

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

  952.                                (uint8_t *)buf, buf_size);

  953.     if (*got_sub_ptr)

  954.         avctx->frame_number++;

  955.     return ret;

  956. }

  957. 

  958. int avcodec_close(AVCodecContext *avctx)

  959. {

  960.     entangled_thread_counter++;

  961.     if(entangled_thread_counter != 1){

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

  963.         entangled_thread_counter--;

  964.         return -1;

  965.     }

  966. 

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

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

  969.     avcodec_default_free_buffers(avctx);

  970.     av_freep(&avctx->priv_data);

  971.     avctx->codec = NULL;

  972.     entangled_thread_counter--;

  973.     return 0;

  974. }

  975. 

  976. AVCodec *avcodec_find_encoder(enum CodecID id)

  977. {

  978.     AVCodec *p;

  979.     p = first_avcodec;

  980.     while (p) {

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

  982.             return p;

  983.         p = p->next;

  984.     }

  985.     return NULL;

  986. }

  987. 

  988. AVCodec *avcodec_find_encoder_by_name(const char *name)

  989. {

  990.     AVCodec *p;

  991.     p = first_avcodec;

  992.     while (p) {

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

  994.             return p;

  995.         p = p->next;

  996.     }

  997.     return NULL;

  998. }

  999. 

  1000. AVCodec *avcodec_find_decoder(enum CodecID id)

  1001. {

  1002.     AVCodec *p;

  1003.     p = first_avcodec;

  1004.     while (p) {

  1005.         if (p->decode != NULL && p->id == id)

  1006.             return p;

  1007.         p = p->next;

  1008.     }

  1009.     return NULL;

  1010. }

  1011. 

  1012. AVCodec *avcodec_find_decoder_by_name(const char *name)

  1013. {

  1014.     AVCodec *p;

  1015.     p = first_avcodec;

  1016.     while (p) {

  1017.         if (p->decode != NULL && strcmp(name,p->name) == 0)

  1018.             return p;

  1019.         p = p->next;

  1020.     }

  1021.     return NULL;

  1022. }

  1023. 

  1024. void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)

  1025. {

  1026.     const char *codec_name;

  1027.     AVCodec *p;

  1028.     char buf1[32];

  1029.     char channels_str[100];

  1030.     int bitrate;

  1031. 

  1032.     if (encode)

  1033.         p = avcodec_find_encoder(enc->codec_id);

  1034.     else

  1035.         p = avcodec_find_decoder(enc->codec_id);

  1036. 

  1037.     if (p) {

  1038.         codec_name = p->name;

  1039.         if (!encode && enc->codec_id == CODEC_ID_MP3) {

  1040.             if (enc->sub_id == 2)

  1041.                 codec_name = "mp2";

  1042.             else if (enc->sub_id == 1)

  1043.                 codec_name = "mp1";

  1044.         }

  1045.     } else if (enc->codec_id == CODEC_ID_MPEG2TS) {

  1046.         /* fake mpeg2 transport stream codec (currently not

  1047.            registered) */

  1048.         codec_name = "mpeg2ts";

  1049.     } else if (enc->codec_name[0] != '\0') {

  1050.         codec_name = enc->codec_name;

  1051.     } else {

  1052.         /* output avi tags */

  1053.         if(   isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)

  1054.            && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){

  1055.             snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",

  1056.                      enc->codec_tag & 0xff,

  1057.                      (enc->codec_tag >> 8) & 0xff,

  1058.                      (enc->codec_tag >> 16) & 0xff,

  1059.                      (enc->codec_tag >> 24) & 0xff,

  1060.                       enc->codec_tag);

  1061.         } else {

  1062.             snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);

  1063.         }

  1064.         codec_name = buf1;

  1065.     }

  1066. 

  1067.     switch(enc->codec_type) {

  1068.     case CODEC_TYPE_VIDEO:

  1069.         snprintf(buf, buf_size,

  1070.                  "Video: %s%s",

  1071.                  codec_name, enc->mb_decision ? " (hq)" : "");

  1072.         if (enc->pix_fmt != PIX_FMT_NONE) {

  1073.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1074.                      ", %s",

  1075.                      avcodec_get_pix_fmt_name(enc->pix_fmt));

  1076.         }

  1077.         if (enc->width) {

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

  1079.                      ", %dx%d",

  1080.                      enc->width, enc->height);

  1081.             if(av_log_get_level() >= AV_LOG_DEBUG){

  1082.                 int g= ff_gcd(enc->time_base.num, enc->time_base.den);

  1083.                 snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1084.                      ", %d/%d",

  1085.                      enc->time_base.num/g, enc->time_base.den/g);

  1086.             }

  1087.         }

  1088.         if (encode) {

  1089.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1090.                      ", q=%d-%d", enc->qmin, enc->qmax);

  1091.         }

  1092.         bitrate = enc->bit_rate;

  1093.         break;

  1094.     case CODEC_TYPE_AUDIO:

  1095.         snprintf(buf, buf_size,

  1096.                  "Audio: %s",

  1097.                  codec_name);

  1098.         switch (enc->channels) {

  1099.             case 1:

  1100.                 strcpy(channels_str, "mono");

  1101.                 break;

  1102.             case 2:

  1103.                 strcpy(channels_str, "stereo");

  1104.                 break;

  1105.             case 6:

  1106.                 strcpy(channels_str, "5:1");

  1107.                 break;

  1108.             default:

  1109.                 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);

  1110.                 break;

  1111.         }

  1112.         if (enc->sample_rate) {

  1113.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1114.                      ", %d Hz, %s",

  1115.                      enc->sample_rate,

  1116.                      channels_str);

  1117.         }

  1118. 

  1119.         /* for PCM codecs, compute bitrate directly */

  1120.         switch(enc->codec_id) {

  1121.         case CODEC_ID_PCM_S32LE:

  1122.         case CODEC_ID_PCM_S32BE:

  1123.         case CODEC_ID_PCM_U32LE:

  1124.         case CODEC_ID_PCM_U32BE:

  1125.             bitrate = enc->sample_rate * enc->channels * 32;

  1126.             break;

  1127.         case CODEC_ID_PCM_S24LE:

  1128.         case CODEC_ID_PCM_S24BE:

  1129.         case CODEC_ID_PCM_U24LE:

  1130.         case CODEC_ID_PCM_U24BE:

  1131.         case CODEC_ID_PCM_S24DAUD:

  1132.             bitrate = enc->sample_rate * enc->channels * 24;

  1133.             break;

  1134.         case CODEC_ID_PCM_S16LE:

  1135.         case CODEC_ID_PCM_S16BE:

  1136.         case CODEC_ID_PCM_U16LE:

  1137.         case CODEC_ID_PCM_U16BE:

  1138.             bitrate = enc->sample_rate * enc->channels * 16;

  1139.             break;

  1140.         case CODEC_ID_PCM_S8:

  1141.         case CODEC_ID_PCM_U8:

  1142.         case CODEC_ID_PCM_ALAW:

  1143.         case CODEC_ID_PCM_MULAW:

  1144.             bitrate = enc->sample_rate * enc->channels * 8;

  1145.             break;

  1146.         default:

  1147.             bitrate = enc->bit_rate;

  1148.             break;

  1149.         }

  1150.         break;

  1151.     case CODEC_TYPE_DATA:

  1152.         snprintf(buf, buf_size, "Data: %s", codec_name);

  1153.         bitrate = enc->bit_rate;

  1154.         break;

  1155.     case CODEC_TYPE_SUBTITLE:

  1156.         snprintf(buf, buf_size, "Subtitle: %s", codec_name);

  1157.         bitrate = enc->bit_rate;

  1158.         break;

  1159.     default:

  1160.         snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);

  1161.         return;

  1162.     }

  1163.     if (encode) {

  1164.         if (enc->flags & CODEC_FLAG_PASS1)

  1165.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1166.                      ", pass 1");

  1167.         if (enc->flags & CODEC_FLAG_PASS2)

  1168.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1169.                      ", pass 2");

  1170.     }

  1171.     if (bitrate != 0) {

  1172.         snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1173.                  ", %d kb/s", bitrate / 1000);

  1174.     }

  1175. }

  1176. 

  1177. unsigned avcodec_version( void )

  1178. {

  1179.   return LIBAVCODEC_VERSION_INT;

  1180. }

  1181. 

  1182. unsigned avcodec_build( void )

  1183. {

  1184.   return LIBAVCODEC_BUILD;

  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. }

  1198. 

  1199. /**

  1200.  * Flush buffers, should be called when seeking or when swicthing to a different stream.

  1201.  */

  1202. void avcodec_flush_buffers(AVCodecContext *avctx)

  1203. {

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

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

  1206. }

  1207. 

  1208. void avcodec_default_free_buffers(AVCodecContext *s){

  1209.     int i, j;

  1210. 

  1211.     if(s->internal_buffer==NULL) return;

  1212. 

  1213.     for(i=0; i<INTERNAL_BUFFER_SIZE; i++){

  1214.         InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];

  1215.         for(j=0; j<4; j++){

  1216.             av_freep(&buf->base[j]);

  1217.             buf->data[j]= NULL;

  1218.         }

  1219.     }

  1220.     av_freep(&s->internal_buffer);

  1221. 

  1222.     s->internal_buffer_count=0;

  1223. }

  1224. 

  1225. char av_get_pict_type_char(int pict_type){

  1226.     switch(pict_type){

  1227.     case I_TYPE: return 'I';

  1228.     case P_TYPE: return 'P';

  1229.     case B_TYPE: return 'B';

  1230.     case S_TYPE: return 'S';

  1231.     case SI_TYPE:return 'i';

  1232.     case SP_TYPE:return 'p';

  1233.     default:     return '?';

  1234.     }

  1235. }

  1236. 

  1237. /* av_log API */

  1238. 

  1239. static int av_log_level = AV_LOG_INFO;

  1240. 

  1241. static void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)

  1242. {

  1243.     static int print_prefix=1;

  1244.     AVClass* avc= ptr ? *(AVClass**)ptr : NULL;

  1245.     if(level>av_log_level)

  1246.         return;

  1247. #undef fprintf

  1248.     if(print_prefix && avc) {

  1249.             fprintf(stderr, "[%s @ %p]", avc->item_name(ptr), avc);

  1250.     }

  1251. #define fprintf please_use_av_log

  1252. 

  1253.     print_prefix= strstr(fmt, "\n") != NULL;

  1254. 

  1255.     vfprintf(stderr, fmt, vl);

  1256. }

  1257. 

  1258. static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback;

  1259. 

  1260. void av_log(void* avcl, int level, const char *fmt, ...)

  1261. {

  1262.     va_list vl;

  1263.     va_start(vl, fmt);

  1264.     av_vlog(avcl, level, fmt, vl);

  1265.     va_end(vl);

  1266. }

  1267. 

  1268. void av_vlog(void* avcl, int level, const char *fmt, va_list vl)

  1269. {

  1270.     av_log_callback(avcl, level, fmt, vl);

  1271. }

  1272. 

  1273. int av_log_get_level(void)

  1274. {

  1275.     return av_log_level;

  1276. }

  1277. 

  1278. void av_log_set_level(int level)

  1279. {

  1280.     av_log_level = level;

  1281. }

  1282. 

  1283. void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))

  1284. {

  1285.     av_log_callback = callback;

  1286. }

  1287. 

  1288. #if !defined(HAVE_THREADS)

  1289. int avcodec_thread_init(AVCodecContext *s, int thread_count){

  1290.     return -1;

  1291. }

  1292. #endif

  1293. 

  1294. unsigned int av_xiphlacing(unsigned char *s, unsigned int v)

  1295. {

  1296.     unsigned int n = 0;

  1297. 

  1298.     while(v >= 0xff) {

  1299.         *s++ = 0xff;

  1300.         v -= 0xff;

  1301.         n++;

  1302.     }

  1303.     *s = v;

  1304.     n++;

  1305.     return n;

  1306. }