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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;

  296.         

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

  298.         

  299.         switch(s->pix_fmt){

  300.         case PIX_FMT_RGB555:

  301.         case PIX_FMT_RGB565:

  302.         case PIX_FMT_YUV422:

  303.         case PIX_FMT_UYVY422:

  304.             pixel_size=2;

  305.             break;

  306.         case PIX_FMT_RGB24:

  307.         case PIX_FMT_BGR24:

  308.             pixel_size=3;

  309.             break;

  310.         case PIX_FMT_RGBA32:

  311.             pixel_size=4;

  312.             break;

  313.         default:

  314.             pixel_size=1;

  315.         }

  316. 

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

  318.             

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

  320.             w+= EDGE_WIDTH*2;

  321.             h+= EDGE_WIDTH*2;

  322.         }

  323.         

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

  325. 

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

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

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

  329. 

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

  331.             buf->linesize[i]= ALIGN(pixel_size*w>>h_shift, STRIDE_ALIGN<<(h_chroma_shift-h_shift)); 

  332. 

  333.             buf->base[i]= av_malloc((buf->linesize[i]*h>>v_shift)+16); //FIXME 16

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

  335.             memset(buf->base[i], 128, buf->linesize[i]*h>>v_shift);

  336.         

  337.             if(s->flags&CODEC_FLAG_EMU_EDGE)

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

  339.             else

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

  341.         }

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

  343.     }

  344.     pic->type= FF_BUFFER_TYPE_INTERNAL;

  345. 

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

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

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

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

  350.     }

  351.     s->internal_buffer_count++;

  352. 

  353.     return 0;

  354. }

  355. 

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

  357.     int i;

  358.     InternalBuffer *buf, *last, temp;

  359. 

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

  361.     assert(s->internal_buffer_count);

  362. 

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

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

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

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

  367.             break;

  368.     }

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

  370.     s->internal_buffer_count--;

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

  372. 

  373.     temp= *buf;

  374.     *buf= *last;

  375.     *last= temp;

  376. 

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

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

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

  380.     }

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

  382. }

  383. 

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

  385.     AVFrame temp_pic;

  386.     int i;

  387. 

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

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

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

  391.         pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;

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

  393.     }

  394. 

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

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

  397.         return 0;

  398. 

  399.     /*

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

  401.      */

  402.     temp_pic = *pic;

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

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

  405.     pic->opaque = NULL;

  406.     /* Allocate new frame */

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

  408.         return -1;

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

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

  411.              s->height);

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

  413.     return 0;

  414. }

  415. 

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

  417.     int i;

  418. 

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

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

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

  422.     }

  423.     return 0;

  424. }

  425. 

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

  427.     return fmt[0];

  428. }

  429. 

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

  431.     AVCodecContext *avc= ptr;

  432. 

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

  434.         return avc->codec->name; 

  435.     else

  436.         return "NULL";

  437. }

  438. 

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

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

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

  442. #define V AV_OPT_FLAG_VIDEO_PARAM

  443. #define A AV_OPT_FLAG_AUDIO_PARAM

  444. #define S AV_OPT_FLAG_SUBTITLE_PARAM

  445. #define E AV_OPT_FLAG_ENCODING_PARAM 

  446. #define D AV_OPT_FLAG_DECODING_PARAM

  447. 

  448. static AVOption options[]={

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  473. {"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"},

  474. {"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"},

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

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

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

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

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

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

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

  482. {"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"},

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

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

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

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

  487. {"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"},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  538. {"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},

  539. {"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},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  681. {"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  709. {NULL},

  710. };

  711. 

  712. #undef A

  713. #undef V

  714. 

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

  716. 

  717. void avcodec_get_context_defaults(AVCodecContext *s){

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

  719. 

  720.     s->av_class= &av_codec_context_class;

  721.     s->bit_rate= 800*1000;

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

  723.     s->qmin= 2;

  724.     s->qmax= 31;

  725.     s->mb_lmin= FF_QP2LAMBDA * 2;

  726.     s->mb_lmax= FF_QP2LAMBDA * 31;

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

  728.     s->qcompress= 0.5;

  729.     s->max_qdiff= 3;

  730.     s->b_quant_factor=1.25;

  731.     s->b_quant_offset=1.25;

  732.     s->i_quant_factor=-0.8;

  733.     s->i_quant_offset=0.0;

  734.     s->error_concealment= 3;

  735.     s->error_resilience= 1;

  736.     s->workaround_bugs= FF_BUG_AUTODETECT;

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

  738.     s->gop_size= 50;

  739.     s->me_method= ME_EPZS;

  740.     s->get_buffer= avcodec_default_get_buffer;

  741.     s->release_buffer= avcodec_default_release_buffer;

  742.     s->get_format= avcodec_default_get_format;

  743.     s->execute= avcodec_default_execute;

  744.     s->thread_count=1;

  745.     s->me_subpel_quality=8;

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

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

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

  749.     s->ildct_cmp= FF_CMP_VSAD;

  750.     s->profile= FF_PROFILE_UNKNOWN;

  751.     s->level= FF_LEVEL_UNKNOWN;

  752.     s->me_penalty_compensation= 256;

  753.     s->pix_fmt= PIX_FMT_NONE;

  754.     s->frame_skip_cmp= FF_CMP_DCTMAX;

  755.     s->nsse_weight= 8;

  756.     

  757.     s->intra_quant_bias= FF_DEFAULT_QUANT_BIAS;

  758.     s->inter_quant_bias= FF_DEFAULT_QUANT_BIAS;

  759.     s->palctrl = NULL;

  760.     s->reget_buffer= avcodec_default_reget_buffer;

  761. }

  762. 

  763. /**

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

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

  766.  */

  767. AVCodecContext *avcodec_alloc_context(void){

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

  769.     

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

  771.     

  772.     avcodec_get_context_defaults(avctx);

  773.     

  774.     return avctx;

  775. }

  776. 

  777. void avcodec_get_frame_defaults(AVFrame *pic){

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

  779. 

  780.     pic->pts= AV_NOPTS_VALUE;

  781.     pic->key_frame= 1;

  782. }

  783. 

  784. /**

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

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

  787.  */

  788. AVFrame *avcodec_alloc_frame(void){

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

  790.     

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

  792.     

  793.     avcodec_get_frame_defaults(pic);

  794.     

  795.     return pic;

  796. }

  797. 

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

  799. {

  800.     int ret= -1;

  801.     

  802.     entangled_thread_counter++;

  803.     if(entangled_thread_counter != 1){

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

  805.         goto end;

  806.     }

  807. 

  808.     if(avctx->codec)

  809.         goto end;

  810. 

  811.     avctx->codec = codec;

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

  813.     avctx->frame_number = 0;

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

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

  816.         if (!avctx->priv_data) 

  817.             goto end;

  818.     } else {

  819.         avctx->priv_data = NULL;

  820.     }

  821. 

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

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

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

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

  826. 

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

  828.         av_freep(&avctx->priv_data);

  829.         goto end;

  830.     }

  831. 

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

  833.     if (ret < 0) {

  834.         av_freep(&avctx->priv_data);

  835.         goto end;

  836.     }

  837.     ret=0;

  838. end:

  839.     entangled_thread_counter--;

  840.     return ret;

  841. }

  842. 

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

  844.                          const short *samples)

  845. {

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

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

  848.         return -1;

  849.     }

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

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

  852.         avctx->frame_number++;

  853.         return ret;

  854.     }else

  855.         return 0;

  856. }

  857. 

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

  859.                          const AVFrame *pict)

  860. {

  861.     if(buf_size < FF_MIN_BUFFER_SIZE){

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

  863.         return -1;

  864.     }

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

  866.         return -1;

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

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

  869.         avctx->frame_number++;

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

  871.     

  872.         return ret;

  873.     }else

  874.         return 0;

  875. }

  876. 

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

  878.                             const AVSubtitle *sub)

  879. {

  880.     int ret;

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

  882.     avctx->frame_number++;

  883.     return ret;

  884. }

  885. 

  886. /** 

  887.  * decode a frame. 

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

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

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

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

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

  893.  * bytes used. 

  894.  */

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

  896.                          int *got_picture_ptr,

  897.                          uint8_t *buf, int buf_size)

  898. {

  899.     int ret;

  900.     

  901.     *got_picture_ptr= 0;

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

  903.         return -1;

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

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

  906.                                 buf, buf_size);

  907. 

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

  909.     

  910.         if (*got_picture_ptr)                           

  911.             avctx->frame_number++;

  912.     }else

  913.         ret= 0;

  914. 

  915.     return ret;

  916. }

  917. 

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

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

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

  921.    *size in BYTES. */

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

  923.                          int *frame_size_ptr,

  924.                          uint8_t *buf, int buf_size)

  925. {

  926.     int ret;

  927. 

  928.     *frame_size_ptr= 0;

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

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

  931.                                 buf, buf_size);

  932.         avctx->frame_number++;

  933.     }else

  934.         ret= 0;

  935.     return ret;

  936. }

  937. 

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

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

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

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

  942.                             int *got_sub_ptr,

  943.                             const uint8_t *buf, int buf_size)

  944. {

  945.     int ret;

  946. 

  947.     *got_sub_ptr = 0;

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

  949.                                (uint8_t *)buf, buf_size);

  950.     if (*got_sub_ptr)

  951.         avctx->frame_number++;

  952.     return ret;

  953. }

  954. 

  955. int avcodec_close(AVCodecContext *avctx)

  956. {

  957.     entangled_thread_counter++;

  958.     if(entangled_thread_counter != 1){

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

  960.         entangled_thread_counter--;

  961.         return -1;

  962.     }

  963. 

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

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

  966.     avcodec_default_free_buffers(avctx);

  967.     av_freep(&avctx->priv_data);

  968.     avctx->codec = NULL;

  969.     entangled_thread_counter--;

  970.     return 0;

  971. }

  972. 

  973. AVCodec *avcodec_find_encoder(enum CodecID id)

  974. {

  975.     AVCodec *p;

  976.     p = first_avcodec;

  977.     while (p) {

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

  979.             return p;

  980.         p = p->next;

  981.     }

  982.     return NULL;

  983. }

  984. 

  985. AVCodec *avcodec_find_encoder_by_name(const char *name)

  986. {

  987.     AVCodec *p;

  988.     p = first_avcodec;

  989.     while (p) {

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

  991.             return p;

  992.         p = p->next;

  993.     }

  994.     return NULL;

  995. }

  996. 

  997. AVCodec *avcodec_find_decoder(enum CodecID id)

  998. {

  999.     AVCodec *p;

  1000.     p = first_avcodec;

  1001.     while (p) {

  1002.         if (p->decode != NULL && p->id == id)

  1003.             return p;

  1004.         p = p->next;

  1005.     }

  1006.     return NULL;

  1007. }

  1008. 

  1009. AVCodec *avcodec_find_decoder_by_name(const char *name)

  1010. {

  1011.     AVCodec *p;

  1012.     p = first_avcodec;

  1013.     while (p) {

  1014.         if (p->decode != NULL && strcmp(name,p->name) == 0)

  1015.             return p;

  1016.         p = p->next;

  1017.     }

  1018.     return NULL;

  1019. }

  1020. 

  1021. void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)

  1022. {

  1023.     const char *codec_name;

  1024.     AVCodec *p;

  1025.     char buf1[32];

  1026.     char channels_str[100];

  1027.     int bitrate;

  1028. 

  1029.     if (encode)

  1030.         p = avcodec_find_encoder(enc->codec_id);

  1031.     else

  1032.         p = avcodec_find_decoder(enc->codec_id);

  1033. 

  1034.     if (p) {

  1035.         codec_name = p->name;

  1036.         if (!encode && enc->codec_id == CODEC_ID_MP3) {

  1037.             if (enc->sub_id == 2)

  1038.                 codec_name = "mp2";

  1039.             else if (enc->sub_id == 1)

  1040.                 codec_name = "mp1";

  1041.         }

  1042.     } else if (enc->codec_id == CODEC_ID_MPEG2TS) {

  1043.         /* fake mpeg2 transport stream codec (currently not

  1044.            registered) */

  1045.         codec_name = "mpeg2ts";

  1046.     } else if (enc->codec_name[0] != '\0') {

  1047.         codec_name = enc->codec_name;

  1048.     } else {

  1049.         /* output avi tags */

  1050.         if(   isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF) 

  1051.            && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){

  1052.             snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X", 

  1053.                      enc->codec_tag & 0xff,

  1054.                      (enc->codec_tag >> 8) & 0xff,

  1055.                      (enc->codec_tag >> 16) & 0xff,

  1056.                      (enc->codec_tag >> 24) & 0xff,

  1057.                       enc->codec_tag);

  1058.         } else {

  1059.             snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);

  1060.         }

  1061.         codec_name = buf1;

  1062.     }

  1063. 

  1064.     switch(enc->codec_type) {

  1065.     case CODEC_TYPE_VIDEO:

  1066.         snprintf(buf, buf_size,

  1067.                  "Video: %s%s",

  1068.                  codec_name, enc->mb_decision ? " (hq)" : "");

  1069.         if (enc->pix_fmt != PIX_FMT_NONE) {

  1070.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1071.                      ", %s",

  1072.                      avcodec_get_pix_fmt_name(enc->pix_fmt));

  1073.         }

  1074.         if (enc->width) {

  1075.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1076.                      ", %dx%d",

  1077.                      enc->width, enc->height);

  1078.             if(av_log_get_level() >= AV_LOG_DEBUG){

  1079.                 int g= ff_gcd(enc->time_base.num, enc->time_base.den);

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

  1081.                      ", %d/%d",

  1082.                      enc->time_base.num/g, enc->time_base.den/g);

  1083.             }

  1084.         }

  1085.         if (encode) {

  1086.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1087.                      ", q=%d-%d", enc->qmin, enc->qmax);

  1088.         }

  1089.         bitrate = enc->bit_rate;

  1090.         break;

  1091.     case CODEC_TYPE_AUDIO:

  1092.         snprintf(buf, buf_size,

  1093.                  "Audio: %s",

  1094.                  codec_name);

  1095.         switch (enc->channels) {

  1096.             case 1:

  1097.                 strcpy(channels_str, "mono");

  1098.                 break;

  1099.             case 2:

  1100.                 strcpy(channels_str, "stereo");

  1101.                 break;

  1102.             case 6:

  1103.                 strcpy(channels_str, "5:1");

  1104.                 break;

  1105.             default:

  1106.                 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);

  1107.                 break;

  1108.         }

  1109.         if (enc->sample_rate) {

  1110.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1111.                      ", %d Hz, %s",

  1112.                      enc->sample_rate,

  1113.                      channels_str);

  1114.         }

  1115.         

  1116.         /* for PCM codecs, compute bitrate directly */

  1117.         switch(enc->codec_id) {

  1118.         case CODEC_ID_PCM_S32LE:

  1119.         case CODEC_ID_PCM_S32BE:

  1120.         case CODEC_ID_PCM_U32LE:

  1121.         case CODEC_ID_PCM_U32BE:

  1122.             bitrate = enc->sample_rate * enc->channels * 32;

  1123.             break;

  1124.         case CODEC_ID_PCM_S24LE:

  1125.         case CODEC_ID_PCM_S24BE:

  1126.         case CODEC_ID_PCM_U24LE:

  1127.         case CODEC_ID_PCM_U24BE:

  1128.         case CODEC_ID_PCM_S24DAUD:

  1129.             bitrate = enc->sample_rate * enc->channels * 24;

  1130.             break;

  1131.         case CODEC_ID_PCM_S16LE:

  1132.         case CODEC_ID_PCM_S16BE:

  1133.         case CODEC_ID_PCM_U16LE:

  1134.         case CODEC_ID_PCM_U16BE:

  1135.             bitrate = enc->sample_rate * enc->channels * 16;

  1136.             break;

  1137.         case CODEC_ID_PCM_S8:

  1138.         case CODEC_ID_PCM_U8:

  1139.         case CODEC_ID_PCM_ALAW:

  1140.         case CODEC_ID_PCM_MULAW:

  1141.             bitrate = enc->sample_rate * enc->channels * 8;

  1142.             break;

  1143.         default:

  1144.             bitrate = enc->bit_rate;

  1145.             break;

  1146.         }

  1147.         break;

  1148.     case CODEC_TYPE_DATA:

  1149.         snprintf(buf, buf_size, "Data: %s", codec_name);

  1150.         bitrate = enc->bit_rate;

  1151.         break;

  1152.     case CODEC_TYPE_SUBTITLE:

  1153.         snprintf(buf, buf_size, "Subtitle: %s", codec_name);

  1154.         bitrate = enc->bit_rate;

  1155.         break;

  1156.     default:

  1157.         snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);

  1158.         return;

  1159.     }

  1160.     if (encode) {

  1161.         if (enc->flags & CODEC_FLAG_PASS1)

  1162.             snprintf(buf + strlen(buf), buf_size - strlen(buf),

  1163.                      ", pass 1");

  1164.         if (enc->flags & CODEC_FLAG_PASS2)

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

  1166.                      ", pass 2");

  1167.     }

  1168.     if (bitrate != 0) {

  1169.         snprintf(buf + strlen(buf), buf_size - strlen(buf), 

  1170.                  ", %d kb/s", bitrate / 1000);

  1171.     }

  1172. }

  1173. 

  1174. unsigned avcodec_version( void )

  1175. {

  1176.   return LIBAVCODEC_VERSION_INT;

  1177. }

  1178. 

  1179. unsigned avcodec_build( void )

  1180. {

  1181.   return LIBAVCODEC_BUILD;

  1182. }

  1183. 

  1184. /* must be called before any other functions */

  1185. void avcodec_init(void)

  1186. {

  1187.     static int inited = 0;

  1188. 

  1189.     if (inited != 0)

  1190. 	return;

  1191.     inited = 1;

  1192. 

  1193.     dsputil_static_init();

  1194. }

  1195. 

  1196. /**

  1197.  * Flush buffers, should be called when seeking or when swicthing to a different stream.

  1198.  */

  1199. void avcodec_flush_buffers(AVCodecContext *avctx)

  1200. {

  1201.     if(avctx->codec->flush)

  1202.         avctx->codec->flush(avctx);

  1203. }

  1204. 

  1205. void avcodec_default_free_buffers(AVCodecContext *s){

  1206.     int i, j;

  1207. 

  1208.     if(s->internal_buffer==NULL) return;

  1209.     

  1210.     for(i=0; i<INTERNAL_BUFFER_SIZE; i++){

  1211.         InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];

  1212.         for(j=0; j<4; j++){

  1213.             av_freep(&buf->base[j]);

  1214.             buf->data[j]= NULL;

  1215.         }

  1216.     }

  1217.     av_freep(&s->internal_buffer);

  1218.     

  1219.     s->internal_buffer_count=0;

  1220. }

  1221. 

  1222. char av_get_pict_type_char(int pict_type){

  1223.     switch(pict_type){

  1224.     case I_TYPE: return 'I'; 

  1225.     case P_TYPE: return 'P'; 

  1226.     case B_TYPE: return 'B'; 

  1227.     case S_TYPE: return 'S'; 

  1228.     case SI_TYPE:return 'i'; 

  1229.     case SP_TYPE:return 'p'; 

  1230.     default:     return '?';

  1231.     }

  1232. }

  1233. 

  1234. /* av_log API */

  1235. 

  1236. static int av_log_level = AV_LOG_INFO;

  1237. 

  1238. static void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)

  1239. {

  1240.     static int print_prefix=1;

  1241.     AVClass* avc= ptr ? *(AVClass**)ptr : NULL;

  1242.     if(level>av_log_level)

  1243. 	return;

  1244. #undef fprintf

  1245.     if(print_prefix && avc) {

  1246. 	    fprintf(stderr, "[%s @ %p]", avc->item_name(ptr), avc);

  1247.     }

  1248. #define fprintf please_use_av_log

  1249.         

  1250.     print_prefix= strstr(fmt, "\n") != NULL;

  1251.         

  1252.     vfprintf(stderr, fmt, vl);

  1253. }

  1254. 

  1255. static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback;

  1256. 

  1257. void av_log(void* avcl, int level, const char *fmt, ...)

  1258. {

  1259.     va_list vl;

  1260.     va_start(vl, fmt);

  1261.     av_vlog(avcl, level, fmt, vl);

  1262.     va_end(vl);

  1263. }

  1264. 

  1265. void av_vlog(void* avcl, int level, const char *fmt, va_list vl)

  1266. {

  1267.     av_log_callback(avcl, level, fmt, vl);

  1268. }

  1269. 

  1270. int av_log_get_level(void)

  1271. {

  1272.     return av_log_level;

  1273. }

  1274. 

  1275. void av_log_set_level(int level)

  1276. {

  1277.     av_log_level = level;

  1278. }

  1279. 

  1280. void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))

  1281. {

  1282.     av_log_callback = callback;

  1283. }

  1284. 

  1285. #if !defined(HAVE_THREADS)

  1286. int avcodec_thread_init(AVCodecContext *s, int thread_count){

  1287.     return -1;

  1288. }

  1289. #endif

  1290. 

  1291. unsigned int av_xiphlacing(unsigned char *s, unsigned int v)

  1292. {

  1293.     unsigned int n = 0;

  1294. 

  1295.     while(v >= 0xff) {

  1296.         *s++ = 0xff;

  1297.         v -= 0xff;

  1298.         n++;

  1299.     }

  1300.     *s = v;

  1301.     n++;

  1302.     return n;

  1303. }