3 * Copyright (c) 2001 Fabrice Bellard.
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include "mpegvideo.h"
39 const uint8_t ff_reverse[256]={
40 0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
41 0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
42 0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
43 0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
44 0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
45 0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
46 0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
47 0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
48 0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
49 0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
50 0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
51 0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
52 0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
53 0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
54 0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
55 0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
58 static int volatile entangled_thread_counter=0;
60 void avcodec_default_free_buffers(AVCodecContext *s);
62 void *av_mallocz(unsigned int size)
66 ptr = av_malloc(size);
73 char *av_strdup(const char *s)
86 * realloc which does nothing if the block is large enough
88 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
93 *size= FFMAX(17*min_size/16 + 32, min_size);
95 return av_realloc(ptr, *size);
99 static unsigned int last_static = 0;
100 static unsigned int allocated_static = 0;
101 static void** array_static = NULL;
104 * allocation of static arrays - do not use for normal allocation.
106 void *av_mallocz_static(unsigned int size)
108 void *ptr = av_mallocz(size);
111 array_static =av_fast_realloc(array_static, &allocated_static, sizeof(void*)*(last_static+1));
114 array_static[last_static++] = ptr;
121 * same as above, but does realloc
124 void *av_realloc_static(void *ptr, unsigned int size)
128 return av_mallocz_static(size);
129 /* Look for the old ptr */
130 for(i = 0; i < last_static; i++) {
131 if(array_static[i] == ptr) {
132 array_static[i] = av_realloc(array_static[i], size);
133 return array_static[i];
141 * free all static arrays and reset pointers to 0.
143 void av_free_static(void)
146 av_freep(&array_static[--last_static]);
148 av_freep(&array_static);
152 * Call av_free_static automatically before it's too late
155 static void do_free(void) __attribute__ ((destructor));
157 static void do_free(void)
163 * Frees memory and sets the pointer to NULL.
164 * @param arg pointer to the pointer which should be freed
166 void av_freep(void *arg)
168 void **ptr= (void**)arg;
173 /* encoder management */
174 AVCodec *first_avcodec = NULL;
176 void register_avcodec(AVCodec *format)
180 while (*p != NULL) p = &(*p)->next;
185 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
186 s->coded_width = width;
187 s->coded_height= height;
188 s->width = -((-width )>>s->lowres);
189 s->height= -((-height)>>s->lowres);
192 typedef struct InternalBuffer{
199 #define INTERNAL_BUFFER_SIZE 32
201 #define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
203 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
208 case PIX_FMT_YUV420P:
210 case PIX_FMT_UYVY422:
211 case PIX_FMT_YUV422P:
212 case PIX_FMT_YUV444P:
214 case PIX_FMT_YUVJ420P:
215 case PIX_FMT_YUVJ422P:
216 case PIX_FMT_YUVJ444P:
217 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
220 case PIX_FMT_YUV411P:
221 case PIX_FMT_UYVY411:
225 case PIX_FMT_YUV410P:
226 if(s->codec_id == CODEC_ID_SVQ1){
231 if(s->codec_id == CODEC_ID_RPZA){
236 if(s->codec_id == CODEC_ID_SMC){
242 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
253 *width = ALIGN(*width , w_align);
254 *height= ALIGN(*height, h_align);
257 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
258 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
261 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
265 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
272 assert(pic->data[0]==NULL);
273 assert(INTERNAL_BUFFER_SIZE > s->internal_buffer_count);
275 if(avcodec_check_dimensions(s,w,h))
278 if(s->internal_buffer==NULL){
279 s->internal_buffer= av_mallocz(INTERNAL_BUFFER_SIZE*sizeof(InternalBuffer));
282 s->internal_buffer= av_fast_realloc(
284 &s->internal_buffer_size,
285 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
289 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
290 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE-1]).last_pic_num; //FIXME ugly hack
294 pic->age= *picture_number - buf->last_pic_num;
295 buf->last_pic_num= *picture_number;
297 int h_chroma_shift, v_chroma_shift;
298 int pixel_size, size[3];
301 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
303 avcodec_align_dimensions(s, &w, &h);
305 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
309 avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
310 pixel_size= picture.linesize[0]*8 / w;
311 //av_log(NULL, AV_LOG_ERROR, "%d %d %d %d\n", (int)picture.data[1], w, h, s->pix_fmt);
312 assert(pixel_size>=1);
313 //FIXME next ensures that linesize= 2^x uvlinesize, thats needed because some MC code assumes it
314 if(pixel_size == 3*8)
315 w= ALIGN(w, STRIDE_ALIGN<<h_chroma_shift);
317 w= ALIGN(pixel_size*w, STRIDE_ALIGN<<(h_chroma_shift+3)) / pixel_size;
318 size[1] = avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
319 size[0] = picture.linesize[0] * h;
322 size[1]= size[2]= size[1]/2;
326 buf->last_pic_num= -256*256*256*64;
327 memset(buf->base, 0, sizeof(buf->base));
328 memset(buf->data, 0, sizeof(buf->data));
330 for(i=0; i<3 && size[i]; i++){
331 const int h_shift= i==0 ? 0 : h_chroma_shift;
332 const int v_shift= i==0 ? 0 : v_chroma_shift;
334 buf->linesize[i]= picture.linesize[i];
336 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
337 if(buf->base[i]==NULL) return -1;
338 memset(buf->base[i], 128, size[i]);
340 // no edge if EDEG EMU or not planar YUV, we check for PAL8 redundantly to protect against a exploitable bug regression ...
341 if((s->flags&CODEC_FLAG_EMU_EDGE) || (s->pix_fmt == PIX_FMT_PAL8) || !size[2])
342 buf->data[i] = buf->base[i];
344 buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);
346 pic->age= 256*256*256*64;
348 pic->type= FF_BUFFER_TYPE_INTERNAL;
351 pic->base[i]= buf->base[i];
352 pic->data[i]= buf->data[i];
353 pic->linesize[i]= buf->linesize[i];
355 s->internal_buffer_count++;
360 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
362 InternalBuffer *buf, *last, temp;
364 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
365 assert(s->internal_buffer_count);
367 buf = NULL; /* avoids warning */
368 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
369 buf= &((InternalBuffer*)s->internal_buffer)[i];
370 if(buf->data[0] == pic->data[0])
373 assert(i < s->internal_buffer_count);
374 s->internal_buffer_count--;
375 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
383 // pic->base[i]=NULL;
385 //printf("R%X\n", pic->opaque);
388 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
392 /* If no picture return a new buffer */
393 if(pic->data[0] == NULL) {
394 /* We will copy from buffer, so must be readable */
395 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
396 return s->get_buffer(s, pic);
399 /* If internal buffer type return the same buffer */
400 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
404 * Not internal type and reget_buffer not overridden, emulate cr buffer
407 for(i = 0; i < 4; i++)
408 pic->data[i] = pic->base[i] = NULL;
410 /* Allocate new frame */
411 if (s->get_buffer(s, pic))
413 /* Copy image data from old buffer to new buffer */
414 img_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
416 s->release_buffer(s, &temp_pic); // Release old frame
420 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){
423 for(i=0; i<count; i++){
424 int r= func(c, arg[i]);
430 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
434 static const char* context_to_name(void* ptr) {
435 AVCodecContext *avc= ptr;
437 if(avc && avc->codec && avc->codec->name)
438 return avc->codec->name;
443 #define OFFSET(x) (int)&((AVCodecContext*)0)->x
444 #define DEFAULT 0 //should be NAN but it doesnt work as its not a constant in glibc as required by ANSI/ISO C
445 //these names are too long to be readable
446 #define V AV_OPT_FLAG_VIDEO_PARAM
447 #define A AV_OPT_FLAG_AUDIO_PARAM
448 #define S AV_OPT_FLAG_SUBTITLE_PARAM
449 #define E AV_OPT_FLAG_ENCODING_PARAM
450 #define D AV_OPT_FLAG_DECODING_PARAM
452 static const AVOption options[]={
453 {"bit_rate", NULL, OFFSET(bit_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
454 {"bit_rate_tolerance", NULL, OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
455 {"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|A|E|D, "flags"},
456 {"mv4", "use four motion vector by macroblock (mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_4MV, INT_MIN, INT_MAX, V|E, "flags"},
457 {"obmc", "use overlapped block motion compensation (h263+)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_OBMC, INT_MIN, INT_MAX, V|E, "flags"},
458 {"qpel", "use 1/4 pel motion compensation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QPEL, INT_MIN, INT_MAX, V|E, "flags"},
459 {"loop", "use loop filter", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOOP_FILTER, INT_MIN, INT_MAX, V|E, "flags"},
460 {"qscale", "use fixed qscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QSCALE, INT_MIN, INT_MAX, 0, "flags"},
461 {"gmc", "use gmc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GMC, INT_MIN, INT_MAX, V|E, "flags"},
462 {"mv0", "always try a mb with mv=<0,0>", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_MV0, INT_MIN, INT_MAX, V|E, "flags"},
463 {"part", "use data partitioning", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PART, INT_MIN, INT_MAX, V|E, "flags"},
464 {"input_preserved", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INPUT_PRESERVED, INT_MIN, INT_MAX, 0, "flags"},
465 {"pass1", "use internal 2pass ratecontrol in first pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS1, INT_MIN, INT_MAX, 0, "flags"},
466 {"pass2", "use internal 2pass ratecontrol in second pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS2, INT_MIN, INT_MAX, 0, "flags"},
467 {"extern_huff", "use external huffman table (for mjpeg)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EXTERN_HUFF, INT_MIN, INT_MAX, 0, "flags"},
468 {"gray", "only decode/encode grayscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GRAY, INT_MIN, INT_MAX, V|E|D, "flags"},
469 {"emu_edge", "don't draw edges", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EMU_EDGE, INT_MIN, INT_MAX, 0, "flags"},
470 {"psnr", "error[?] variables will be set during encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PSNR, INT_MIN, INT_MAX, V|E, "flags"},
471 {"truncated", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRUNCATED, INT_MIN, INT_MAX, 0, "flags"},
472 {"naq", "normalize adaptive quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_NORMALIZE_AQP, INT_MIN, INT_MAX, V|E, "flags"},
473 {"ildct", "use interlaced dct", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_DCT, INT_MIN, INT_MAX, V|E, "flags"},
474 {"low_delay", "force low delay", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOW_DELAY, INT_MIN, INT_MAX, V|D, "flags"},
475 {"alt", "enable alternate scantable (mpeg2/mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_ALT_SCAN, INT_MIN, INT_MAX, V|E, "flags"},
476 {"trell", "use trellis quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRELLIS_QUANT, INT_MIN, INT_MAX, V|E, "flags"},
477 {"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"},
478 {"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"},
479 {"aic", "h263 advanced intra coding / mpeg4 ac prediction", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_AC_PRED, INT_MIN, INT_MAX, V|E, "flags"},
480 {"umv", "use unlimited motion vectors", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_UMV, INT_MIN, INT_MAX, V|E, "flags"},
481 {"cbp", "use rate distortion optimization for cbp", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CBP_RD, INT_MIN, INT_MAX, V|E, "flags"},
482 {"qprd", "use rate distortion optimization for qp selection", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QP_RD, INT_MIN, INT_MAX, V|E, "flags"},
483 {"aiv", "h263 alternative inter vlc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_AIV, INT_MIN, INT_MAX, V|E, "flags"},
484 {"slice", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_SLICE_STRUCT, INT_MIN, INT_MAX, V|E, "flags"},
485 {"ilme", "interlaced motion estimation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_ME, INT_MIN, INT_MAX, V|E, "flags"},
486 {"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"},
487 {"cgop", "closed gop", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CLOSED_GOP, INT_MIN, INT_MAX, V|E, "flags"},
488 {"fast", "allow non spec compliant speedup tricks", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FAST, INT_MIN, INT_MAX, V|E, "flags2"},
489 {"sgop", "strictly enforce gop size", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_STRICT_GOP, INT_MIN, INT_MAX, V|E, "flags2"},
490 {"noout", "skip bitstream encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NO_OUTPUT, INT_MIN, INT_MAX, V|E, "flags2"},
491 {"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"},
492 {"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
493 {"me_method", NULL, OFFSET(me_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "me_method"},
494 {"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
495 {"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
496 {"gop_size", NULL, OFFSET(gop_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
497 {"rate_emu", NULL, OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
498 {"sample_rate", NULL, OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
499 {"channels", NULL, OFFSET(channels), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
500 {"cutoff", "set cutoff bandwidth", OFFSET(cutoff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
501 {"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
502 {"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
503 {"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
504 {"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
505 {"qcompress", NULL, OFFSET(qcompress), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
506 {"qblur", NULL, OFFSET(qblur), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
507 {"qmin", NULL, OFFSET(qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
508 {"qmax", NULL, OFFSET(qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
509 {"max_qdiff", NULL, OFFSET(max_qdiff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
510 {"max_b_frames", NULL, OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
511 {"b_quant_factor", NULL, OFFSET(b_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
512 {"rc_strategy", NULL, OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
513 {"b_strategy", NULL, OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},
514 {"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
515 {"rtp_mode", NULL, OFFSET(rtp_mode), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
516 {"rtp_payload_size", NULL, OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
517 {"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
518 {"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
519 {"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
520 {"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
521 {"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
522 {"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
523 {"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
524 {"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
525 {"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
526 {"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
527 {"bugs", NULL, OFFSET(workaround_bugs), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "bug"},
528 {"autodetect", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
529 {"old_msmpeg4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_OLD_MSMPEG4, INT_MIN, INT_MAX, V|D, "bug"},
530 {"xvid_ilace", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_XVID_ILACE, INT_MIN, INT_MAX, V|D, "bug"},
531 {"ump4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_UMP4, INT_MIN, INT_MAX, V|D, "bug"},
532 {"no_padding", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_NO_PADDING, INT_MIN, INT_MAX, V|D, "bug"},
533 {"amv", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AMV, INT_MIN, INT_MAX, V|D, "bug"},
534 {"ac_vlc", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AC_VLC, INT_MIN, INT_MAX, V|D, "bug"},
535 {"qpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
536 {"std_qpel", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_STD_QPEL, INT_MIN, INT_MAX, V|D, "bug"},
537 {"qpel_chroma2", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA2, INT_MIN, INT_MAX, V|D, "bug"},
538 {"direct_blocksize", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DIRECT_BLOCKSIZE, INT_MIN, INT_MAX, V|D, "bug"},
539 {"edge", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_EDGE, INT_MIN, INT_MAX, V|D, "bug"},
540 {"hpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_HPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
541 {"dc_clip", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DC_CLIP, INT_MIN, INT_MAX, V|D, "bug"},
542 {"ms", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_MS, INT_MIN, INT_MAX, V|D, "bug"},
543 {"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},
544 {"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},
545 {"strict", NULL, OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "strict"},
546 {"very", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_VERY_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
547 {"strict", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
548 {"normal", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_NORMAL, INT_MIN, INT_MAX, V|E, "strict"},
549 {"inofficial", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_INOFFICIAL, INT_MIN, INT_MAX, V|E, "strict"},
550 {"experimental", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|E, "strict"},
551 {"b_quant_offset", NULL, OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
552 {"er", NULL, OFFSET(error_resilience), FF_OPT_TYPE_INT, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
553 {"careful", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
554 {"compliant", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_COMPLIANT, INT_MIN, INT_MAX, V|D, "er"},
555 {"aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
556 {"very_aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_VERY_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
557 {"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
558 {"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
559 {"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
560 {"mpeg_quant", NULL, OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
561 {"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
562 {"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
563 {"rc_qsquish", NULL, OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
564 {"rc_qmod_amp", NULL, OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
565 {"rc_qmod_freq", NULL, OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
566 {"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
567 {"rc_eq", NULL, OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX, V|E},
568 {"rc_max_rate", NULL, OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
569 {"rc_min_rate", NULL, OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
570 {"rc_buffer_size", NULL, OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
571 {"rc_buf_aggressivity", NULL, OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
572 {"i_quant_factor", NULL, OFFSET(i_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
573 {"i_quant_offset", NULL, OFFSET(i_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
574 {"rc_initial_cplx", NULL, OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
575 {"dct", NULL, OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E, "dct"},
576 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_AUTO, INT_MIN, INT_MAX, V|E, "dct"},
577 {"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FASTINT, INT_MIN, INT_MAX, V|E, "dct"},
578 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_INT, INT_MIN, INT_MAX, V|E, "dct"},
579 {"mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MMX, INT_MIN, INT_MAX, V|E, "dct"},
580 {"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MLIB, INT_MIN, INT_MAX, V|E, "dct"},
581 {"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_ALTIVEC, INT_MIN, INT_MAX, V|E, "dct"},
582 {"faan", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FAAN, INT_MIN, INT_MAX, V|E, "dct"},
583 {"lumi_mask", "lumimasking", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
584 {"tcplx_mask", "temporal complexity masking", OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
585 {"scplx_mask", "spatial complexity masking", OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
586 {"p_mask", "inter masking", OFFSET(p_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
587 {"dark_mask", "darkness masking", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
588 {"unused", NULL, OFFSET(unused), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
589 {"idct", NULL, OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E|D, "idct"},
590 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_AUTO, INT_MIN, INT_MAX, V|E|D, "idct"},
591 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_INT, INT_MIN, INT_MAX, V|E|D, "idct"},
592 {"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLE, INT_MIN, INT_MAX, V|E|D, "idct"},
593 {"simplemmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
594 {"libmpeg2mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_LIBMPEG2MMX, INT_MIN, INT_MAX, V|E|D, "idct"},
595 {"ps2", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_PS2, INT_MIN, INT_MAX, V|E|D, "idct"},
596 {"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_MLIB, INT_MIN, INT_MAX, V|E|D, "idct"},
597 {"arm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ARM, INT_MIN, INT_MAX, V|E|D, "idct"},
598 {"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ALTIVEC, INT_MIN, INT_MAX, V|E|D, "idct"},
599 {"sh4", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SH4, INT_MIN, INT_MAX, V|E|D, "idct"},
600 {"simplearm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARM, INT_MIN, INT_MAX, V|E|D, "idct"},
601 {"h264", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_H264, INT_MIN, INT_MAX, V|E|D, "idct"},
602 {"vp3", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_VP3, INT_MIN, INT_MAX, V|E|D, "idct"},
603 {"ipp", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_IPP, INT_MIN, INT_MAX, V|E|D, "idct"},
604 {"xvidmmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_XVIDMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
605 {"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
606 {"ec", NULL, OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, 3, INT_MIN, INT_MAX, V|D, "ec"},
607 {"guess_mvs", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_GUESS_MVS, INT_MIN, INT_MAX, V|D, "ec"},
608 {"deblock", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_DEBLOCK, INT_MIN, INT_MAX, V|D, "ec"},
609 {"bits_per_sample", NULL, OFFSET(bits_per_sample), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
610 {"pred", "prediction method", OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "pred"},
611 {"left", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_LEFT, INT_MIN, INT_MAX, V|E, "pred"},
612 {"plane", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_PLANE, INT_MIN, INT_MAX, V|E, "pred"},
613 {"median", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_MEDIAN, INT_MIN, INT_MAX, V|E, "pred"},
614 {"aspect", NULL, OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, 0, 10, V|E},
615 {"debug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, DEFAULT, 0, INT_MAX, V|A|S|E|D, "debug"},
616 {"pict", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PICT_INFO, INT_MIN, INT_MAX, V|D, "debug"},
617 {"rc", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_RC, INT_MIN, INT_MAX, V|E, "debug"},
618 {"bitstream", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BITSTREAM, INT_MIN, INT_MAX, V|D, "debug"},
619 {"mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
620 {"qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_QP, INT_MIN, INT_MAX, V|D, "debug"},
621 {"mv", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MV, INT_MIN, INT_MAX, V|D, "debug"},
622 {"dct_coeff", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_DCT_COEFF, INT_MIN, INT_MAX, V|D, "debug"},
623 {"skip", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_SKIP, INT_MIN, INT_MAX, V|D, "debug"},
624 {"startcode", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_STARTCODE, INT_MIN, INT_MAX, V|D, "debug"},
625 {"pts", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PTS, INT_MIN, INT_MAX, V|D, "debug"},
626 {"er", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_ER, INT_MIN, INT_MAX, V|D, "debug"},
627 {"mmco", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MMCO, INT_MIN, INT_MAX, V|D, "debug"},
628 {"bugs", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BUGS, INT_MIN, INT_MAX, V|D, "debug"},
629 {"vis_qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_QP, INT_MIN, INT_MAX, V|D, "debug"},
630 {"vis_mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
631 {"vismv", "visualize motion vectors", OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|D, "debug_mv"},
632 {"pf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_P_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
633 {"bf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
634 {"bb", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_BACK, INT_MIN, INT_MAX, V|D, "debug_mv"},
635 {"mb_qmin", NULL, OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
636 {"mb_qmax", NULL, OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
637 {"cmp", "full pel me compare function", OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
638 {"subcmp", "sub pel me compare function", OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
639 {"mbcmp", "macroblock compare function", OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
640 {"ildctcmp", "interlaced dct compare function", OFFSET(ildct_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
641 {"dia_size", NULL, OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
642 {"last_pred", NULL, OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
643 {"preme", NULL, OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
644 {"precmp", "pre motion estimation compare function", OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
645 {"sad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
646 {"sse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
647 {"satd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SATD, INT_MIN, INT_MAX, V|E, "cmp_func"},
648 {"dct", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCT, INT_MIN, INT_MAX, V|E, "cmp_func"},
649 {"psnr", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_PSNR, INT_MIN, INT_MAX, V|E, "cmp_func"},
650 {"bit", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_BIT, INT_MIN, INT_MAX, V|E, "cmp_func"},
651 {"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_RD, INT_MIN, INT_MAX, V|E, "cmp_func"},
652 {"zero", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_ZERO, INT_MIN, INT_MAX, V|E, "cmp_func"},
653 {"vsad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
654 {"vsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
655 {"nsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_NSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
656 #ifdef CONFIG_SNOW_ENCODER
657 {"w53", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W53, INT_MIN, INT_MAX, V|E, "cmp_func"},
658 {"w97", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W97, INT_MIN, INT_MAX, V|E, "cmp_func"},
660 {"dctmax", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
661 {"chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_CHROMA, INT_MIN, INT_MAX, V|E, "cmp_func"},
662 {"pre_dia_size", NULL, OFFSET(pre_dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
663 {"subq", "sub pel motion estimation quality", OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
664 {"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
665 {"me_range", NULL, OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
666 {"ibias", NULL, OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
667 {"pbias", NULL, OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
668 {"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
669 {"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
670 {"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
671 {"coder", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "coder"},
672 {"vlc", "variable length coder / huffman coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_VLC, INT_MIN, INT_MAX, V|E, "coder"},
673 {"ac", "arithmetic coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_AC, INT_MIN, INT_MAX, V|E, "coder"},
674 {"context", "context model", OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
675 {"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
676 {"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
677 {"mbd", NULL, OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "mbd"},
678 {"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_SIMPLE, INT_MIN, INT_MAX, V|E, "mbd"},
679 {"bits", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_BITS, INT_MIN, INT_MAX, V|E, "mbd"},
680 {"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_RD, INT_MIN, INT_MAX, V|E, "mbd"},
681 {"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
682 {"sc_threshold", NULL, OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
683 {"lmin", "min lagrange factor", OFFSET(lmin), FF_OPT_TYPE_INT, 2*FF_QP2LAMBDA, 0, INT_MAX, V|E},
684 {"lmax", "max lagrange factor", OFFSET(lmax), FF_OPT_TYPE_INT, 31*FF_QP2LAMBDA, 0, INT_MAX, V|E},
685 {"nr", "noise reduction", OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
686 {"rc_init_occupancy", NULL, OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
687 {"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
688 {"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|A|E|D, "flags2"},
689 {"error_rate", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
690 {"antialias", NULL, OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "aa"},
691 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_AUTO, INT_MIN, INT_MAX, V|D, "aa"},
692 {"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FASTINT, INT_MIN, INT_MAX, V|D, "aa"},
693 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_INT, INT_MIN, INT_MAX, V|D, "aa"},
694 {"float", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FLOAT, INT_MIN, INT_MAX, V|D, "aa"},
695 {"qns", "quantizer noise shaping", OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
696 {"thread_count", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E|D},
697 {"me_threshold", "motion estimaton threshold", OFFSET(me_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
698 {"mb_threshold", NULL, OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
699 {"dc", NULL, OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
700 {"nssew", "nsse weight", OFFSET(nsse_weight), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
701 {"skip_top", NULL, OFFSET(skip_top), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
702 {"skip_bottom", NULL, OFFSET(skip_bottom), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
703 {"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
704 {"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
705 {"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
706 {"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
707 {"lowres", NULL, OFFSET(lowres), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|D},
708 {"frame_skip_threshold", NULL, OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
709 {"frame_skip_factor", NULL, OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
710 {"frame_skip_exp", NULL, OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
711 {"skipcmp", "frame skip compare function", OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
712 {"border_mask", NULL, OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
713 {"mb_lmin", NULL, OFFSET(mb_lmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
714 {"mb_lmax", NULL, OFFSET(mb_lmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
715 {"me_penalty_compensation", NULL, OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
716 {"bidir_refine", NULL, OFFSET(bidir_refine), FF_OPT_TYPE_INT, DEFAULT, 0, 4, V|E},
717 {"brd_scale", NULL, OFFSET(brd_scale), FF_OPT_TYPE_INT, DEFAULT, 0, 10, V|E},
718 {"crf", NULL, OFFSET(crf), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
719 {"cqp", NULL, OFFSET(cqp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
720 {"keyint_min", NULL, OFFSET(keyint_min), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
721 {"refs", NULL, OFFSET(refs), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
722 {"chromaoffset", NULL, OFFSET(chromaoffset), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
723 {"bframebias", NULL, OFFSET(bframebias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
724 {"trellis", NULL, OFFSET(trellis), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
725 {"directpred", NULL, OFFSET(directpred), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
726 {"bpyramid", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BPYRAMID, INT_MIN, INT_MAX, V|E, "flags2"},
727 {"wpred", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_WPRED, INT_MIN, INT_MAX, V|E, "flags2"},
728 {"mixed_refs", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_MIXED_REFS, INT_MIN, INT_MAX, V|E, "flags2"},
729 {"8x8dct", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_8X8DCT, INT_MIN, INT_MAX, V|E, "flags2"},
730 {"fastpskip", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|E, "flags2"},
731 {"aud", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_AUD, INT_MIN, INT_MAX, V|E, "flags2"},
732 {"brdo", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BRDO, INT_MIN, INT_MAX, V|E, "flags2"},
733 {"complexityblur", NULL, OFFSET(complexityblur), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
734 {"deblockalpha", NULL, OFFSET(deblockalpha), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
735 {"deblockbeta", NULL, OFFSET(deblockbeta), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
736 {"partitions", NULL, OFFSET(partitions), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|E, "partitions"},
737 {"parti4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I4X4, INT_MIN, INT_MAX, V|E, "partitions"},
738 {"parti8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I8X8, INT_MIN, INT_MAX, V|E, "partitions"},
739 {"partp4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P4X4, INT_MIN, INT_MAX, V|E, "partitions"},
740 {"partp8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P8X8, INT_MIN, INT_MAX, V|E, "partitions"},
741 {"partb8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_B8X8, INT_MIN, INT_MAX, V|E, "partitions"},
742 {"sc_factor", NULL, OFFSET(scenechange_factor), FF_OPT_TYPE_INT, 6, 0, INT_MAX, V|E},
743 {"mv0_threshold", NULL, OFFSET(mv0_threshold), FF_OPT_TYPE_INT, 256, 0, INT_MAX, V|E},
744 {"ivlc", "intra vlc table", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_INTRA_VLC, INT_MIN, INT_MAX, V|E, "flags2"},
745 {"b_sensitivity", NULL, OFFSET(b_sensitivity), FF_OPT_TYPE_INT, 40, 1, INT_MAX, V|E},
746 {"compression_level", NULL, OFFSET(compression_level), FF_OPT_TYPE_INT, FF_COMPRESSION_DEFAULT, INT_MIN, INT_MAX, V|A|E},
747 {"use_lpc", NULL, OFFSET(use_lpc), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
748 {"lpc_coeff_precision", NULL, OFFSET(lpc_coeff_precision), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|E},
749 {"min_prediction_order", NULL, OFFSET(min_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
750 {"max_prediction_order", NULL, OFFSET(max_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
751 {"prediction_order_method", NULL, OFFSET(prediction_order_method), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
752 {"min_partition_order", NULL, OFFSET(min_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
753 {"max_partition_order", NULL, OFFSET(max_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
760 static AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options };
762 void avcodec_get_context_defaults(AVCodecContext *s){
763 memset(s, 0, sizeof(AVCodecContext));
765 s->av_class= &av_codec_context_class;
766 s->bit_rate= 800*1000;
767 s->bit_rate_tolerance= s->bit_rate*10;
770 s->mb_lmin= FF_QP2LAMBDA * 2;
771 s->mb_lmax= FF_QP2LAMBDA * 31;
772 s->rc_eq= "tex^qComp";
777 s->complexityblur = 20.0;
779 s->flags2 = CODEC_FLAG2_FASTPSKIP;
781 s->b_quant_factor=1.25;
782 s->b_quant_offset=1.25;
783 s->i_quant_factor=-0.8;
784 s->i_quant_offset=0.0;
785 s->error_concealment= 3;
786 s->error_resilience= 1;
787 s->workaround_bugs= FF_BUG_AUTODETECT;
788 s->time_base= (AVRational){0,1};
790 s->me_method= ME_EPZS;
791 s->get_buffer= avcodec_default_get_buffer;
792 s->release_buffer= avcodec_default_release_buffer;
793 s->get_format= avcodec_default_get_format;
794 s->execute= avcodec_default_execute;
796 s->me_subpel_quality=8;
797 s->lmin= FF_QP2LAMBDA * s->qmin;
798 s->lmax= FF_QP2LAMBDA * s->qmax;
799 s->sample_aspect_ratio= (AVRational){0,1};
800 s->ildct_cmp= FF_CMP_VSAD;
801 s->profile= FF_PROFILE_UNKNOWN;
802 s->level= FF_LEVEL_UNKNOWN;
803 s->me_penalty_compensation= 256;
804 s->pix_fmt= PIX_FMT_NONE;
805 s->frame_skip_cmp= FF_CMP_DCTMAX;
807 s->sample_fmt= SAMPLE_FMT_S16; // FIXME: set to NONE
808 s->mv0_threshold= 256;
809 s->b_sensitivity= 40;
810 s->compression_level = FF_COMPRESSION_DEFAULT;
812 s->min_prediction_order = -1;
813 s->max_prediction_order = -1;
814 s->prediction_order_method = -1;
815 s->min_partition_order = -1;
816 s->max_partition_order = -1;
818 s->intra_quant_bias= FF_DEFAULT_QUANT_BIAS;
819 s->inter_quant_bias= FF_DEFAULT_QUANT_BIAS;
821 s->reget_buffer= avcodec_default_reget_buffer;
825 * allocates a AVCodecContext and set it to defaults.
826 * this can be deallocated by simply calling free()
828 AVCodecContext *avcodec_alloc_context(void){
829 AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
831 if(avctx==NULL) return NULL;
833 avcodec_get_context_defaults(avctx);
838 void avcodec_get_frame_defaults(AVFrame *pic){
839 memset(pic, 0, sizeof(AVFrame));
841 pic->pts= AV_NOPTS_VALUE;
846 * allocates a AVPFrame and set it to defaults.
847 * this can be deallocated by simply calling free()
849 AVFrame *avcodec_alloc_frame(void){
850 AVFrame *pic= av_malloc(sizeof(AVFrame));
852 if(pic==NULL) return NULL;
854 avcodec_get_frame_defaults(pic);
859 int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
863 entangled_thread_counter++;
864 if(entangled_thread_counter != 1){
865 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
872 if (codec->priv_data_size > 0) {
873 avctx->priv_data = av_mallocz(codec->priv_data_size);
874 if (!avctx->priv_data)
877 avctx->priv_data = NULL;
880 if(avctx->coded_width && avctx->coded_height)
881 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
882 else if(avctx->width && avctx->height)
883 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
885 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
886 av_freep(&avctx->priv_data);
890 avctx->codec = codec;
891 avctx->codec_id = codec->id;
892 avctx->frame_number = 0;
893 ret = avctx->codec->init(avctx);
895 av_freep(&avctx->priv_data);
901 entangled_thread_counter--;
905 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
906 const short *samples)
908 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
909 av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
912 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
913 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
914 avctx->frame_number++;
920 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
923 if(buf_size < FF_MIN_BUFFER_SIZE){
924 av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
927 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
929 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
930 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
931 avctx->frame_number++;
932 emms_c(); //needed to avoid an emms_c() call before every return;
939 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
940 const AVSubtitle *sub)
943 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);
944 avctx->frame_number++;
950 * @param buf bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE larger then the actual read bytes
951 * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
952 * @param buf_size the size of the buffer in bytes
953 * @param got_picture_ptr zero if no frame could be decompressed, Otherwise, it is non zero
954 * @return -1 if error, otherwise return the number of
957 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
958 int *got_picture_ptr,
959 uint8_t *buf, int buf_size)
964 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
966 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
967 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
970 emms_c(); //needed to avoid an emms_c() call before every return;
972 if (*got_picture_ptr)
973 avctx->frame_number++;
980 /* decode an audio frame. return -1 if error, otherwise return the
981 *number of bytes used. If no frame could be decompressed,
982 *frame_size_ptr is zero. Otherwise, it is the decompressed frame
984 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
986 uint8_t *buf, int buf_size)
991 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
992 ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
994 avctx->frame_number++;
1000 /* decode a subtitle message. return -1 if error, otherwise return the
1001 *number of bytes used. If no subtitle could be decompressed,
1002 *got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
1003 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
1005 const uint8_t *buf, int buf_size)
1010 ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
1011 (uint8_t *)buf, buf_size);
1013 avctx->frame_number++;
1017 int avcodec_close(AVCodecContext *avctx)
1019 entangled_thread_counter++;
1020 if(entangled_thread_counter != 1){
1021 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1022 entangled_thread_counter--;
1026 if (avctx->codec->close)
1027 avctx->codec->close(avctx);
1028 avcodec_default_free_buffers(avctx);
1029 av_freep(&avctx->priv_data);
1030 avctx->codec = NULL;
1031 entangled_thread_counter--;
1035 AVCodec *avcodec_find_encoder(enum CodecID id)
1040 if (p->encode != NULL && p->id == id)
1047 AVCodec *avcodec_find_encoder_by_name(const char *name)
1052 if (p->encode != NULL && strcmp(name,p->name) == 0)
1059 AVCodec *avcodec_find_decoder(enum CodecID id)
1064 if (p->decode != NULL && p->id == id)
1071 AVCodec *avcodec_find_decoder_by_name(const char *name)
1076 if (p->decode != NULL && strcmp(name,p->name) == 0)
1083 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1085 const char *codec_name;
1088 char channels_str[100];
1092 p = avcodec_find_encoder(enc->codec_id);
1094 p = avcodec_find_decoder(enc->codec_id);
1097 codec_name = p->name;
1098 if (!encode && enc->codec_id == CODEC_ID_MP3) {
1099 if (enc->sub_id == 2)
1101 else if (enc->sub_id == 1)
1104 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1105 /* fake mpeg2 transport stream codec (currently not
1107 codec_name = "mpeg2ts";
1108 } else if (enc->codec_name[0] != '\0') {
1109 codec_name = enc->codec_name;
1111 /* output avi tags */
1112 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
1113 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
1114 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
1115 enc->codec_tag & 0xff,
1116 (enc->codec_tag >> 8) & 0xff,
1117 (enc->codec_tag >> 16) & 0xff,
1118 (enc->codec_tag >> 24) & 0xff,
1121 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
1126 switch(enc->codec_type) {
1127 case CODEC_TYPE_VIDEO:
1128 snprintf(buf, buf_size,
1130 codec_name, enc->mb_decision ? " (hq)" : "");
1131 if (enc->pix_fmt != PIX_FMT_NONE) {
1132 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1134 avcodec_get_pix_fmt_name(enc->pix_fmt));
1137 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1139 enc->width, enc->height);
1140 if(av_log_get_level() >= AV_LOG_DEBUG){
1141 int g= ff_gcd(enc->time_base.num, enc->time_base.den);
1142 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1144 enc->time_base.num/g, enc->time_base.den/g);
1148 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1149 ", q=%d-%d", enc->qmin, enc->qmax);
1151 bitrate = enc->bit_rate;
1153 case CODEC_TYPE_AUDIO:
1154 snprintf(buf, buf_size,
1157 switch (enc->channels) {
1159 strcpy(channels_str, "mono");
1162 strcpy(channels_str, "stereo");
1165 strcpy(channels_str, "5:1");
1168 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);
1171 if (enc->sample_rate) {
1172 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1178 /* for PCM codecs, compute bitrate directly */
1179 switch(enc->codec_id) {
1180 case CODEC_ID_PCM_S32LE:
1181 case CODEC_ID_PCM_S32BE:
1182 case CODEC_ID_PCM_U32LE:
1183 case CODEC_ID_PCM_U32BE:
1184 bitrate = enc->sample_rate * enc->channels * 32;
1186 case CODEC_ID_PCM_S24LE:
1187 case CODEC_ID_PCM_S24BE:
1188 case CODEC_ID_PCM_U24LE:
1189 case CODEC_ID_PCM_U24BE:
1190 case CODEC_ID_PCM_S24DAUD:
1191 bitrate = enc->sample_rate * enc->channels * 24;
1193 case CODEC_ID_PCM_S16LE:
1194 case CODEC_ID_PCM_S16BE:
1195 case CODEC_ID_PCM_U16LE:
1196 case CODEC_ID_PCM_U16BE:
1197 bitrate = enc->sample_rate * enc->channels * 16;
1199 case CODEC_ID_PCM_S8:
1200 case CODEC_ID_PCM_U8:
1201 case CODEC_ID_PCM_ALAW:
1202 case CODEC_ID_PCM_MULAW:
1203 bitrate = enc->sample_rate * enc->channels * 8;
1206 bitrate = enc->bit_rate;
1210 case CODEC_TYPE_DATA:
1211 snprintf(buf, buf_size, "Data: %s", codec_name);
1212 bitrate = enc->bit_rate;
1214 case CODEC_TYPE_SUBTITLE:
1215 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1216 bitrate = enc->bit_rate;
1219 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1223 if (enc->flags & CODEC_FLAG_PASS1)
1224 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1226 if (enc->flags & CODEC_FLAG_PASS2)
1227 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1231 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1232 ", %d kb/s", bitrate / 1000);
1236 unsigned avcodec_version( void )
1238 return LIBAVCODEC_VERSION_INT;
1241 unsigned avcodec_build( void )
1243 return LIBAVCODEC_BUILD;
1246 static void init_crcs(void){
1247 av_crc04C11DB7= av_mallocz_static(sizeof(AVCRC) * 257);
1248 av_crc8005 = av_mallocz_static(sizeof(AVCRC) * 257);
1249 av_crc07 = av_mallocz_static(sizeof(AVCRC) * 257);
1250 av_crc_init(av_crc04C11DB7, 0, 32, 0x04c11db7, sizeof(AVCRC)*257);
1251 av_crc_init(av_crc8005 , 0, 16, 0x8005 , sizeof(AVCRC)*257);
1252 av_crc_init(av_crc07 , 0, 8, 0x07 , sizeof(AVCRC)*257);
1255 /* must be called before any other functions */
1256 void avcodec_init(void)
1258 static int inited = 0;
1264 dsputil_static_init();
1269 * Flush buffers, should be called when seeking or when swicthing to a different stream.
1271 void avcodec_flush_buffers(AVCodecContext *avctx)
1273 if(avctx->codec->flush)
1274 avctx->codec->flush(avctx);
1277 void avcodec_default_free_buffers(AVCodecContext *s){
1280 if(s->internal_buffer==NULL) return;
1282 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1283 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1285 av_freep(&buf->base[j]);
1289 av_freep(&s->internal_buffer);
1291 s->internal_buffer_count=0;
1294 char av_get_pict_type_char(int pict_type){
1296 case I_TYPE: return 'I';
1297 case P_TYPE: return 'P';
1298 case B_TYPE: return 'B';
1299 case S_TYPE: return 'S';
1300 case SI_TYPE:return 'i';
1301 case SP_TYPE:return 'p';
1302 default: return '?';
1306 int av_get_bits_per_sample(enum CodecID codec_id){
1308 case CODEC_ID_ADPCM_SBPRO_2:
1310 case CODEC_ID_ADPCM_SBPRO_3:
1312 case CODEC_ID_ADPCM_SBPRO_4:
1313 case CODEC_ID_ADPCM_CT:
1315 case CODEC_ID_PCM_ALAW:
1316 case CODEC_ID_PCM_MULAW:
1317 case CODEC_ID_PCM_S8:
1318 case CODEC_ID_PCM_U8:
1320 case CODEC_ID_PCM_S16BE:
1321 case CODEC_ID_PCM_S16LE:
1322 case CODEC_ID_PCM_U16BE:
1323 case CODEC_ID_PCM_U16LE:
1325 case CODEC_ID_PCM_S24DAUD:
1326 case CODEC_ID_PCM_S24BE:
1327 case CODEC_ID_PCM_S24LE:
1328 case CODEC_ID_PCM_U24BE:
1329 case CODEC_ID_PCM_U24LE:
1331 case CODEC_ID_PCM_S32BE:
1332 case CODEC_ID_PCM_S32LE:
1333 case CODEC_ID_PCM_U32BE:
1334 case CODEC_ID_PCM_U32LE:
1341 #if !defined(HAVE_THREADS)
1342 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1347 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1361 /* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1362 * Also, tries to create file in /tmp first, if possible.
1363 * *prefix can be a character constant; *filename will be allocated internally.
1364 * Returns file descriptor of opened file (or -1 on error)
1365 * and opened file name in **filename. */
1366 int av_tempfile(char *prefix, char **filename) {
1369 *filename = tempnam(".", prefix);
1371 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1372 *filename = av_malloc(len);
1374 /* -----common section-----*/
1375 if (*filename == NULL) {
1376 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1380 fd = open(*filename, _O_RDWR | _O_BINARY | _O_CREAT, 0444);
1382 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1383 fd = mkstemp(*filename);
1385 snprintf(*filename, len, "./%sXXXXXX", prefix);
1386 fd = mkstemp(*filename);
1389 /* -----common section-----*/
1391 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1394 return fd; /* success */