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>
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.
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.
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 #include "mpegvideo.h"
40 const uint8_t ff_reverse[256]={
41 0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
42 0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
43 0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
44 0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
45 0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
46 0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
47 0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
48 0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
49 0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
50 0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
51 0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
52 0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
53 0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
54 0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
55 0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
56 0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
59 static int volatile entangled_thread_counter=0;
61 void avcodec_default_free_buffers(AVCodecContext *s);
63 void *av_mallocz(unsigned int size)
67 ptr = av_malloc(size);
74 char *av_strdup(const char *s)
87 * realloc which does nothing if the block is large enough
89 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
94 *size= FFMAX(17*min_size/16 + 32, min_size);
96 return av_realloc(ptr, *size);
100 static unsigned int last_static = 0;
101 static unsigned int allocated_static = 0;
102 static void** array_static = NULL;
105 * allocation of static arrays - do not use for normal allocation.
107 void *av_mallocz_static(unsigned int size)
109 void *ptr = av_mallocz(size);
112 array_static =av_fast_realloc(array_static, &allocated_static, sizeof(void*)*(last_static+1));
115 array_static[last_static++] = ptr;
122 * same as above, but does realloc
125 void *av_realloc_static(void *ptr, unsigned int size)
129 return av_mallocz_static(size);
130 /* Look for the old ptr */
131 for(i = 0; i < last_static; i++) {
132 if(array_static[i] == ptr) {
133 array_static[i] = av_realloc(array_static[i], size);
134 return array_static[i];
142 * free all static arrays and reset pointers to 0.
144 void av_free_static(void)
147 av_freep(&array_static[--last_static]);
149 av_freep(&array_static);
153 * Call av_free_static automatically before it's too late
156 static void do_free(void) __attribute__ ((destructor));
158 static void do_free(void)
164 * Frees memory and sets the pointer to NULL.
165 * @param arg pointer to the pointer which should be freed
167 void av_freep(void *arg)
169 void **ptr= (void**)arg;
174 /* encoder management */
175 AVCodec *first_avcodec = NULL;
177 void register_avcodec(AVCodec *format)
181 while (*p != NULL) p = &(*p)->next;
186 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
187 s->coded_width = width;
188 s->coded_height= height;
189 s->width = -((-width )>>s->lowres);
190 s->height= -((-height)>>s->lowres);
193 typedef struct InternalBuffer{
200 #define INTERNAL_BUFFER_SIZE 32
202 #define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
204 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
209 case PIX_FMT_YUV420P:
211 case PIX_FMT_UYVY422:
212 case PIX_FMT_YUV422P:
213 case PIX_FMT_YUV444P:
215 case PIX_FMT_YUVJ420P:
216 case PIX_FMT_YUVJ422P:
217 case PIX_FMT_YUVJ444P:
218 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
221 case PIX_FMT_YUV411P:
222 case PIX_FMT_UYVY411:
226 case PIX_FMT_YUV410P:
227 if(s->codec_id == CODEC_ID_SVQ1){
232 if(s->codec_id == CODEC_ID_RPZA){
237 if(s->codec_id == CODEC_ID_SMC){
243 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
254 *width = ALIGN(*width , w_align);
255 *height= ALIGN(*height, h_align);
258 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
259 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
262 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
266 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
273 assert(pic->data[0]==NULL);
274 assert(INTERNAL_BUFFER_SIZE > s->internal_buffer_count);
276 if(avcodec_check_dimensions(s,w,h))
279 if(s->internal_buffer==NULL){
280 s->internal_buffer= av_mallocz(INTERNAL_BUFFER_SIZE*sizeof(InternalBuffer));
283 s->internal_buffer= av_fast_realloc(
285 &s->internal_buffer_size,
286 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
290 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
291 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE-1]).last_pic_num; //FIXME ugly hack
295 pic->age= *picture_number - buf->last_pic_num;
296 buf->last_pic_num= *picture_number;
298 int h_chroma_shift, v_chroma_shift;
299 int pixel_size, size[3];
302 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
304 avcodec_align_dimensions(s, &w, &h);
306 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
310 avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
311 pixel_size= picture.linesize[0]*8 / w;
312 //av_log(NULL, AV_LOG_ERROR, "%d %d %d %d\n", (int)picture.data[1], w, h, s->pix_fmt);
313 assert(pixel_size>=1);
314 //FIXME next ensures that linesize= 2^x uvlinesize, thats needed because some MC code assumes it
315 if(pixel_size == 3*8)
316 w= ALIGN(w, STRIDE_ALIGN<<h_chroma_shift);
318 w= ALIGN(pixel_size*w, STRIDE_ALIGN<<(h_chroma_shift+3)) / pixel_size;
319 size[1] = avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
320 size[0] = picture.linesize[0] * h;
323 size[1]= size[2]= size[1]/2;
327 buf->last_pic_num= -256*256*256*64;
328 memset(buf->base, 0, sizeof(buf->base));
329 memset(buf->data, 0, sizeof(buf->data));
331 for(i=0; i<3 && size[i]; i++){
332 const int h_shift= i==0 ? 0 : h_chroma_shift;
333 const int v_shift= i==0 ? 0 : v_chroma_shift;
335 buf->linesize[i]= picture.linesize[i];
337 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
338 if(buf->base[i]==NULL) return -1;
339 memset(buf->base[i], 128, size[i]);
341 // no edge if EDEG EMU or not planar YUV, we check for PAL8 redundantly to protect against a exploitable bug regression ...
342 if((s->flags&CODEC_FLAG_EMU_EDGE) || (s->pix_fmt == PIX_FMT_PAL8) || !size[2])
343 buf->data[i] = buf->base[i];
345 buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);
347 pic->age= 256*256*256*64;
349 pic->type= FF_BUFFER_TYPE_INTERNAL;
352 pic->base[i]= buf->base[i];
353 pic->data[i]= buf->data[i];
354 pic->linesize[i]= buf->linesize[i];
356 s->internal_buffer_count++;
361 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
363 InternalBuffer *buf, *last, temp;
365 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
366 assert(s->internal_buffer_count);
368 buf = NULL; /* avoids warning */
369 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
370 buf= &((InternalBuffer*)s->internal_buffer)[i];
371 if(buf->data[0] == pic->data[0])
374 assert(i < s->internal_buffer_count);
375 s->internal_buffer_count--;
376 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
384 // pic->base[i]=NULL;
386 //printf("R%X\n", pic->opaque);
389 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
393 /* If no picture return a new buffer */
394 if(pic->data[0] == NULL) {
395 /* We will copy from buffer, so must be readable */
396 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
397 return s->get_buffer(s, pic);
400 /* If internal buffer type return the same buffer */
401 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
405 * Not internal type and reget_buffer not overridden, emulate cr buffer
408 for(i = 0; i < 4; i++)
409 pic->data[i] = pic->base[i] = NULL;
411 /* Allocate new frame */
412 if (s->get_buffer(s, pic))
414 /* Copy image data from old buffer to new buffer */
415 img_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
417 s->release_buffer(s, &temp_pic); // Release old frame
421 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){
424 for(i=0; i<count; i++){
425 int r= func(c, arg[i]);
431 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
435 static const char* context_to_name(void* ptr) {
436 AVCodecContext *avc= ptr;
438 if(avc && avc->codec && avc->codec->name)
439 return avc->codec->name;
444 #define OFFSET(x) (int)&((AVCodecContext*)0)->x
445 #define DEFAULT 0 //should be NAN but it doesnt work as its not a constant in glibc as required by ANSI/ISO C
446 //these names are too long to be readable
447 #define V AV_OPT_FLAG_VIDEO_PARAM
448 #define A AV_OPT_FLAG_AUDIO_PARAM
449 #define S AV_OPT_FLAG_SUBTITLE_PARAM
450 #define E AV_OPT_FLAG_ENCODING_PARAM
451 #define D AV_OPT_FLAG_DECODING_PARAM
453 static const AVOption options[]={
454 {"bit_rate", NULL, OFFSET(bit_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
455 {"bit_rate_tolerance", NULL, OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
456 {"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|A|E|D, "flags"},
457 {"mv4", "use four motion vector by macroblock (mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_4MV, INT_MIN, INT_MAX, V|E, "flags"},
458 {"obmc", "use overlapped block motion compensation (h263+)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_OBMC, INT_MIN, INT_MAX, V|E, "flags"},
459 {"qpel", "use 1/4 pel motion compensation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QPEL, INT_MIN, INT_MAX, V|E, "flags"},
460 {"loop", "use loop filter", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOOP_FILTER, INT_MIN, INT_MAX, V|E, "flags"},
461 {"qscale", "use fixed qscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QSCALE, INT_MIN, INT_MAX, 0, "flags"},
462 {"gmc", "use gmc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GMC, INT_MIN, INT_MAX, V|E, "flags"},
463 {"mv0", "always try a mb with mv=<0,0>", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_MV0, INT_MIN, INT_MAX, V|E, "flags"},
464 {"part", "use data partitioning", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PART, INT_MIN, INT_MAX, V|E, "flags"},
465 {"input_preserved", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INPUT_PRESERVED, INT_MIN, INT_MAX, 0, "flags"},
466 {"pass1", "use internal 2pass ratecontrol in first pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS1, INT_MIN, INT_MAX, 0, "flags"},
467 {"pass2", "use internal 2pass ratecontrol in second pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS2, INT_MIN, INT_MAX, 0, "flags"},
468 {"extern_huff", "use external huffman table (for mjpeg)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EXTERN_HUFF, INT_MIN, INT_MAX, 0, "flags"},
469 {"gray", "only decode/encode grayscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GRAY, INT_MIN, INT_MAX, V|E|D, "flags"},
470 {"emu_edge", "don't draw edges", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EMU_EDGE, INT_MIN, INT_MAX, 0, "flags"},
471 {"psnr", "error[?] variables will be set during encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PSNR, INT_MIN, INT_MAX, V|E, "flags"},
472 {"truncated", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRUNCATED, INT_MIN, INT_MAX, 0, "flags"},
473 {"naq", "normalize adaptive quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_NORMALIZE_AQP, INT_MIN, INT_MAX, V|E, "flags"},
474 {"ildct", "use interlaced dct", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_DCT, INT_MIN, INT_MAX, V|E, "flags"},
475 {"low_delay", "force low delay", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOW_DELAY, INT_MIN, INT_MAX, V|D, "flags"},
476 {"alt", "enable alternate scantable (mpeg2/mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_ALT_SCAN, INT_MIN, INT_MAX, V|E, "flags"},
477 {"trell", "use trellis quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRELLIS_QUANT, INT_MIN, INT_MAX, V|E, "flags"},
478 {"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"},
479 {"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"},
480 {"aic", "h263 advanced intra coding / mpeg4 ac prediction", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_AC_PRED, INT_MIN, INT_MAX, V|E, "flags"},
481 {"umv", "use unlimited motion vectors", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_UMV, INT_MIN, INT_MAX, V|E, "flags"},
482 {"cbp", "use rate distortion optimization for cbp", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CBP_RD, INT_MIN, INT_MAX, V|E, "flags"},
483 {"qprd", "use rate distortion optimization for qp selection", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QP_RD, INT_MIN, INT_MAX, V|E, "flags"},
484 {"aiv", "h263 alternative inter vlc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_AIV, INT_MIN, INT_MAX, V|E, "flags"},
485 {"slice", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_SLICE_STRUCT, INT_MIN, INT_MAX, V|E, "flags"},
486 {"ilme", "interlaced motion estimation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_ME, INT_MIN, INT_MAX, V|E, "flags"},
487 {"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"},
488 {"cgop", "closed gop", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CLOSED_GOP, INT_MIN, INT_MAX, V|E, "flags"},
489 {"fast", "allow non spec compliant speedup tricks", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FAST, INT_MIN, INT_MAX, V|E, "flags2"},
490 {"sgop", "strictly enforce gop size", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_STRICT_GOP, INT_MIN, INT_MAX, V|E, "flags2"},
491 {"noout", "skip bitstream encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NO_OUTPUT, INT_MIN, INT_MAX, V|E, "flags2"},
492 {"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"},
493 {"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
494 {"me_method", NULL, OFFSET(me_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "me_method"},
495 {"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
496 {"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
497 {"gop_size", NULL, OFFSET(gop_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
498 {"rate_emu", NULL, OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
499 {"sample_rate", NULL, OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
500 {"channels", NULL, OFFSET(channels), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
501 {"cutoff", "set cutoff bandwidth", OFFSET(cutoff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
502 {"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
503 {"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
504 {"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
505 {"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
506 {"qcompress", NULL, OFFSET(qcompress), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
507 {"qblur", NULL, OFFSET(qblur), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
508 {"qmin", NULL, OFFSET(qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
509 {"qmax", NULL, OFFSET(qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
510 {"max_qdiff", NULL, OFFSET(max_qdiff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
511 {"max_b_frames", NULL, OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
512 {"b_quant_factor", NULL, OFFSET(b_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
513 {"rc_strategy", NULL, OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
514 {"b_strategy", NULL, OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},
515 {"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
516 {"rtp_mode", NULL, OFFSET(rtp_mode), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
517 {"rtp_payload_size", NULL, OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
518 {"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
519 {"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
520 {"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
521 {"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
522 {"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
523 {"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
524 {"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
525 {"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
526 {"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
527 {"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
528 {"bugs", NULL, OFFSET(workaround_bugs), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "bug"},
529 {"autodetect", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
530 {"old_msmpeg4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_OLD_MSMPEG4, INT_MIN, INT_MAX, V|D, "bug"},
531 {"xvid_ilace", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_XVID_ILACE, INT_MIN, INT_MAX, V|D, "bug"},
532 {"ump4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_UMP4, INT_MIN, INT_MAX, V|D, "bug"},
533 {"no_padding", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_NO_PADDING, INT_MIN, INT_MAX, V|D, "bug"},
534 {"amv", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AMV, INT_MIN, INT_MAX, V|D, "bug"},
535 {"ac_vlc", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AC_VLC, INT_MIN, INT_MAX, V|D, "bug"},
536 {"qpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
537 {"std_qpel", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_STD_QPEL, INT_MIN, INT_MAX, V|D, "bug"},
538 {"qpel_chroma2", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA2, INT_MIN, INT_MAX, V|D, "bug"},
539 {"direct_blocksize", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DIRECT_BLOCKSIZE, INT_MIN, INT_MAX, V|D, "bug"},
540 {"edge", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_EDGE, INT_MIN, INT_MAX, V|D, "bug"},
541 {"hpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_HPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
542 {"dc_clip", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DC_CLIP, INT_MIN, INT_MAX, V|D, "bug"},
543 {"ms", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_MS, INT_MIN, INT_MAX, V|D, "bug"},
544 {"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},
545 {"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},
546 {"strict", NULL, OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "strict"},
547 {"very", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_VERY_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
548 {"strict", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
549 {"normal", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_NORMAL, INT_MIN, INT_MAX, V|E, "strict"},
550 {"inofficial", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_INOFFICIAL, INT_MIN, INT_MAX, V|E, "strict"},
551 {"experimental", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|E, "strict"},
552 {"b_quant_offset", NULL, OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
553 {"er", NULL, OFFSET(error_resilience), FF_OPT_TYPE_INT, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
554 {"careful", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
555 {"compliant", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_COMPLIANT, INT_MIN, INT_MAX, V|D, "er"},
556 {"aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
557 {"very_aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_VERY_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
558 {"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
559 {"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
560 {"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
561 {"mpeg_quant", NULL, OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
562 {"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
563 {"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
564 {"rc_qsquish", NULL, OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
565 {"rc_qmod_amp", NULL, OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
566 {"rc_qmod_freq", NULL, OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
567 {"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
568 {"rc_eq", NULL, OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX, V|E},
569 {"rc_max_rate", NULL, OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
570 {"rc_min_rate", NULL, OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
571 {"rc_buffer_size", NULL, OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
572 {"rc_buf_aggressivity", NULL, OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
573 {"i_quant_factor", NULL, OFFSET(i_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
574 {"i_quant_offset", NULL, OFFSET(i_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
575 {"rc_initial_cplx", NULL, OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
576 {"dct", NULL, OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E, "dct"},
577 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_AUTO, INT_MIN, INT_MAX, V|E, "dct"},
578 {"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FASTINT, INT_MIN, INT_MAX, V|E, "dct"},
579 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_INT, INT_MIN, INT_MAX, V|E, "dct"},
580 {"mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MMX, INT_MIN, INT_MAX, V|E, "dct"},
581 {"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MLIB, INT_MIN, INT_MAX, V|E, "dct"},
582 {"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_ALTIVEC, INT_MIN, INT_MAX, V|E, "dct"},
583 {"faan", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FAAN, INT_MIN, INT_MAX, V|E, "dct"},
584 {"lumi_mask", "lumimasking", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
585 {"tcplx_mask", "temporal complexity masking", OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
586 {"scplx_mask", "spatial complexity masking", OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
587 {"p_mask", "inter masking", OFFSET(p_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
588 {"dark_mask", "darkness masking", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
589 {"unused", NULL, OFFSET(unused), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
590 {"idct", NULL, OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E|D, "idct"},
591 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_AUTO, INT_MIN, INT_MAX, V|E|D, "idct"},
592 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_INT, INT_MIN, INT_MAX, V|E|D, "idct"},
593 {"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLE, INT_MIN, INT_MAX, V|E|D, "idct"},
594 {"simplemmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
595 {"libmpeg2mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_LIBMPEG2MMX, INT_MIN, INT_MAX, V|E|D, "idct"},
596 {"ps2", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_PS2, INT_MIN, INT_MAX, V|E|D, "idct"},
597 {"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_MLIB, INT_MIN, INT_MAX, V|E|D, "idct"},
598 {"arm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ARM, INT_MIN, INT_MAX, V|E|D, "idct"},
599 {"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ALTIVEC, INT_MIN, INT_MAX, V|E|D, "idct"},
600 {"sh4", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SH4, INT_MIN, INT_MAX, V|E|D, "idct"},
601 {"simplearm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARM, INT_MIN, INT_MAX, V|E|D, "idct"},
602 {"h264", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_H264, INT_MIN, INT_MAX, V|E|D, "idct"},
603 {"vp3", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_VP3, INT_MIN, INT_MAX, V|E|D, "idct"},
604 {"ipp", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_IPP, INT_MIN, INT_MAX, V|E|D, "idct"},
605 {"xvidmmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_XVIDMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
606 {"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
607 {"ec", NULL, OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, 3, INT_MIN, INT_MAX, V|D, "ec"},
608 {"guess_mvs", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_GUESS_MVS, INT_MIN, INT_MAX, V|D, "ec"},
609 {"deblock", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_DEBLOCK, INT_MIN, INT_MAX, V|D, "ec"},
610 {"bits_per_sample", NULL, OFFSET(bits_per_sample), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
611 {"pred", "prediction method", OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "pred"},
612 {"left", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_LEFT, INT_MIN, INT_MAX, V|E, "pred"},
613 {"plane", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_PLANE, INT_MIN, INT_MAX, V|E, "pred"},
614 {"median", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_MEDIAN, INT_MIN, INT_MAX, V|E, "pred"},
615 {"aspect", NULL, OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, 0, 10, V|E},
616 {"debug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, DEFAULT, 0, INT_MAX, V|A|S|E|D, "debug"},
617 {"pict", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PICT_INFO, INT_MIN, INT_MAX, V|D, "debug"},
618 {"rc", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_RC, INT_MIN, INT_MAX, V|E, "debug"},
619 {"bitstream", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BITSTREAM, INT_MIN, INT_MAX, V|D, "debug"},
620 {"mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
621 {"qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_QP, INT_MIN, INT_MAX, V|D, "debug"},
622 {"mv", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MV, INT_MIN, INT_MAX, V|D, "debug"},
623 {"dct_coeff", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_DCT_COEFF, INT_MIN, INT_MAX, V|D, "debug"},
624 {"skip", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_SKIP, INT_MIN, INT_MAX, V|D, "debug"},
625 {"startcode", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_STARTCODE, INT_MIN, INT_MAX, V|D, "debug"},
626 {"pts", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PTS, INT_MIN, INT_MAX, V|D, "debug"},
627 {"er", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_ER, INT_MIN, INT_MAX, V|D, "debug"},
628 {"mmco", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MMCO, INT_MIN, INT_MAX, V|D, "debug"},
629 {"bugs", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BUGS, INT_MIN, INT_MAX, V|D, "debug"},
630 {"vis_qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_QP, INT_MIN, INT_MAX, V|D, "debug"},
631 {"vis_mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
632 {"vismv", "visualize motion vectors", OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|D, "debug_mv"},
633 {"pf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_P_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
634 {"bf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
635 {"bb", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_BACK, INT_MIN, INT_MAX, V|D, "debug_mv"},
636 {"mb_qmin", NULL, OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
637 {"mb_qmax", NULL, OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
638 {"cmp", "full pel me compare function", OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
639 {"subcmp", "sub pel me compare function", OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
640 {"mbcmp", "macroblock compare function", OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
641 {"ildctcmp", "interlaced dct compare function", OFFSET(ildct_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
642 {"dia_size", NULL, OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
643 {"last_pred", NULL, OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
644 {"preme", NULL, OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
645 {"precmp", "pre motion estimation compare function", OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
646 {"sad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
647 {"sse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
648 {"satd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SATD, INT_MIN, INT_MAX, V|E, "cmp_func"},
649 {"dct", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCT, INT_MIN, INT_MAX, V|E, "cmp_func"},
650 {"psnr", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_PSNR, INT_MIN, INT_MAX, V|E, "cmp_func"},
651 {"bit", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_BIT, INT_MIN, INT_MAX, V|E, "cmp_func"},
652 {"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_RD, INT_MIN, INT_MAX, V|E, "cmp_func"},
653 {"zero", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_ZERO, INT_MIN, INT_MAX, V|E, "cmp_func"},
654 {"vsad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
655 {"vsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
656 {"nsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_NSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
657 #ifdef CONFIG_SNOW_ENCODER
658 {"w53", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W53, INT_MIN, INT_MAX, V|E, "cmp_func"},
659 {"w97", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W97, INT_MIN, INT_MAX, V|E, "cmp_func"},
661 {"dctmax", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
662 {"chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_CHROMA, INT_MIN, INT_MAX, V|E, "cmp_func"},
663 {"pre_dia_size", NULL, OFFSET(pre_dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
664 {"subq", "sub pel motion estimation quality", OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
665 {"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
666 {"me_range", NULL, OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
667 {"ibias", NULL, OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
668 {"pbias", NULL, OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
669 {"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
670 {"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
671 {"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
672 {"coder", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "coder"},
673 {"vlc", "variable length coder / huffman coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_VLC, INT_MIN, INT_MAX, V|E, "coder"},
674 {"ac", "arithmetic coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_AC, INT_MIN, INT_MAX, V|E, "coder"},
675 {"context", "context model", OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
676 {"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
677 {"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
678 {"mbd", NULL, OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "mbd"},
679 {"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_SIMPLE, INT_MIN, INT_MAX, V|E, "mbd"},
680 {"bits", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_BITS, INT_MIN, INT_MAX, V|E, "mbd"},
681 {"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_RD, INT_MIN, INT_MAX, V|E, "mbd"},
682 {"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
683 {"sc_threshold", NULL, OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
684 {"lmin", "min lagrange factor", OFFSET(lmin), FF_OPT_TYPE_INT, 2*FF_QP2LAMBDA, 0, INT_MAX, V|E},
685 {"lmax", "max lagrange factor", OFFSET(lmax), FF_OPT_TYPE_INT, 31*FF_QP2LAMBDA, 0, INT_MAX, V|E},
686 {"nr", "noise reduction", OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
687 {"rc_init_occupancy", NULL, OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
688 {"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
689 {"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|A|E|D, "flags2"},
690 {"error_rate", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
691 {"antialias", NULL, OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "aa"},
692 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_AUTO, INT_MIN, INT_MAX, V|D, "aa"},
693 {"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FASTINT, INT_MIN, INT_MAX, V|D, "aa"},
694 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_INT, INT_MIN, INT_MAX, V|D, "aa"},
695 {"float", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FLOAT, INT_MIN, INT_MAX, V|D, "aa"},
696 {"qns", "quantizer noise shaping", OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
697 {"thread_count", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E|D},
698 {"me_threshold", "motion estimaton threshold", OFFSET(me_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
699 {"mb_threshold", NULL, OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
700 {"dc", NULL, OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
701 {"nssew", "nsse weight", OFFSET(nsse_weight), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
702 {"skip_top", NULL, OFFSET(skip_top), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
703 {"skip_bottom", NULL, OFFSET(skip_bottom), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
704 {"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
705 {"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
706 {"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
707 {"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
708 {"lowres", NULL, OFFSET(lowres), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|D},
709 {"frame_skip_threshold", NULL, OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
710 {"frame_skip_factor", NULL, OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
711 {"frame_skip_exp", NULL, OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
712 {"skipcmp", "frame skip compare function", OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
713 {"border_mask", NULL, OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
714 {"mb_lmin", NULL, OFFSET(mb_lmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
715 {"mb_lmax", NULL, OFFSET(mb_lmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
716 {"me_penalty_compensation", NULL, OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
717 {"bidir_refine", NULL, OFFSET(bidir_refine), FF_OPT_TYPE_INT, DEFAULT, 0, 4, V|E},
718 {"brd_scale", NULL, OFFSET(brd_scale), FF_OPT_TYPE_INT, DEFAULT, 0, 10, V|E},
719 {"crf", NULL, OFFSET(crf), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
720 {"cqp", NULL, OFFSET(cqp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
721 {"keyint_min", NULL, OFFSET(keyint_min), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
722 {"refs", NULL, OFFSET(refs), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
723 {"chromaoffset", NULL, OFFSET(chromaoffset), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
724 {"bframebias", NULL, OFFSET(bframebias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
725 {"trellis", NULL, OFFSET(trellis), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
726 {"directpred", NULL, OFFSET(directpred), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
727 {"bpyramid", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BPYRAMID, INT_MIN, INT_MAX, V|E, "flags2"},
728 {"wpred", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_WPRED, INT_MIN, INT_MAX, V|E, "flags2"},
729 {"mixed_refs", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_MIXED_REFS, INT_MIN, INT_MAX, V|E, "flags2"},
730 {"8x8dct", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_8X8DCT, INT_MIN, INT_MAX, V|E, "flags2"},
731 {"fastpskip", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|E, "flags2"},
732 {"aud", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_AUD, INT_MIN, INT_MAX, V|E, "flags2"},
733 {"brdo", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BRDO, INT_MIN, INT_MAX, V|E, "flags2"},
734 {"complexityblur", NULL, OFFSET(complexityblur), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
735 {"deblockalpha", NULL, OFFSET(deblockalpha), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
736 {"deblockbeta", NULL, OFFSET(deblockbeta), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
737 {"partitions", NULL, OFFSET(partitions), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|E, "partitions"},
738 {"parti4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I4X4, INT_MIN, INT_MAX, V|E, "partitions"},
739 {"parti8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I8X8, INT_MIN, INT_MAX, V|E, "partitions"},
740 {"partp4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P4X4, INT_MIN, INT_MAX, V|E, "partitions"},
741 {"partp8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P8X8, INT_MIN, INT_MAX, V|E, "partitions"},
742 {"partb8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_B8X8, INT_MIN, INT_MAX, V|E, "partitions"},
743 {"sc_factor", NULL, OFFSET(scenechange_factor), FF_OPT_TYPE_INT, 6, 0, INT_MAX, V|E},
744 {"mv0_threshold", NULL, OFFSET(mv0_threshold), FF_OPT_TYPE_INT, 256, 0, INT_MAX, V|E},
745 {"ivlc", "intra vlc table", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_INTRA_VLC, INT_MIN, INT_MAX, V|E, "flags2"},
746 {"b_sensitivity", NULL, OFFSET(b_sensitivity), FF_OPT_TYPE_INT, 40, 1, INT_MAX, V|E},
747 {"compression_level", NULL, OFFSET(compression_level), FF_OPT_TYPE_INT, FF_COMPRESSION_DEFAULT, INT_MIN, INT_MAX, V|A|E},
748 {"use_lpc", NULL, OFFSET(use_lpc), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
749 {"lpc_coeff_precision", NULL, OFFSET(lpc_coeff_precision), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|E},
750 {"min_prediction_order", NULL, OFFSET(min_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
751 {"max_prediction_order", NULL, OFFSET(max_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
752 {"prediction_order_method", NULL, OFFSET(prediction_order_method), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
753 {"min_partition_order", NULL, OFFSET(min_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
754 {"max_partition_order", NULL, OFFSET(max_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
761 static AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options };
763 void avcodec_get_context_defaults(AVCodecContext *s){
764 memset(s, 0, sizeof(AVCodecContext));
766 s->av_class= &av_codec_context_class;
767 s->bit_rate= 800*1000;
768 s->bit_rate_tolerance= s->bit_rate*10;
771 s->mb_lmin= FF_QP2LAMBDA * 2;
772 s->mb_lmax= FF_QP2LAMBDA * 31;
773 s->rc_eq= "tex^qComp";
778 s->complexityblur = 20.0;
780 s->flags2 = CODEC_FLAG2_FASTPSKIP;
782 s->b_quant_factor=1.25;
783 s->b_quant_offset=1.25;
784 s->i_quant_factor=-0.8;
785 s->i_quant_offset=0.0;
786 s->error_concealment= 3;
787 s->error_resilience= 1;
788 s->workaround_bugs= FF_BUG_AUTODETECT;
789 s->time_base= (AVRational){0,1};
791 s->me_method= ME_EPZS;
792 s->get_buffer= avcodec_default_get_buffer;
793 s->release_buffer= avcodec_default_release_buffer;
794 s->get_format= avcodec_default_get_format;
795 s->execute= avcodec_default_execute;
797 s->me_subpel_quality=8;
798 s->lmin= FF_QP2LAMBDA * s->qmin;
799 s->lmax= FF_QP2LAMBDA * s->qmax;
800 s->sample_aspect_ratio= (AVRational){0,1};
801 s->ildct_cmp= FF_CMP_VSAD;
802 s->profile= FF_PROFILE_UNKNOWN;
803 s->level= FF_LEVEL_UNKNOWN;
804 s->me_penalty_compensation= 256;
805 s->pix_fmt= PIX_FMT_NONE;
806 s->frame_skip_cmp= FF_CMP_DCTMAX;
808 s->sample_fmt= SAMPLE_FMT_S16; // FIXME: set to NONE
809 s->mv0_threshold= 256;
810 s->b_sensitivity= 40;
811 s->compression_level = FF_COMPRESSION_DEFAULT;
813 s->min_prediction_order = -1;
814 s->max_prediction_order = -1;
815 s->prediction_order_method = -1;
816 s->min_partition_order = -1;
817 s->max_partition_order = -1;
819 s->intra_quant_bias= FF_DEFAULT_QUANT_BIAS;
820 s->inter_quant_bias= FF_DEFAULT_QUANT_BIAS;
822 s->reget_buffer= avcodec_default_reget_buffer;
826 * allocates a AVCodecContext and set it to defaults.
827 * this can be deallocated by simply calling free()
829 AVCodecContext *avcodec_alloc_context(void){
830 AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
832 if(avctx==NULL) return NULL;
834 avcodec_get_context_defaults(avctx);
839 void avcodec_get_frame_defaults(AVFrame *pic){
840 memset(pic, 0, sizeof(AVFrame));
842 pic->pts= AV_NOPTS_VALUE;
847 * allocates a AVPFrame and set it to defaults.
848 * this can be deallocated by simply calling free()
850 AVFrame *avcodec_alloc_frame(void){
851 AVFrame *pic= av_malloc(sizeof(AVFrame));
853 if(pic==NULL) return NULL;
855 avcodec_get_frame_defaults(pic);
860 int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
864 entangled_thread_counter++;
865 if(entangled_thread_counter != 1){
866 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
873 if (codec->priv_data_size > 0) {
874 avctx->priv_data = av_mallocz(codec->priv_data_size);
875 if (!avctx->priv_data)
878 avctx->priv_data = NULL;
881 if(avctx->coded_width && avctx->coded_height)
882 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
883 else if(avctx->width && avctx->height)
884 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
886 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
887 av_freep(&avctx->priv_data);
891 avctx->codec = codec;
892 avctx->codec_id = codec->id;
893 avctx->frame_number = 0;
894 ret = avctx->codec->init(avctx);
896 av_freep(&avctx->priv_data);
902 entangled_thread_counter--;
906 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
907 const short *samples)
909 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
910 av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
913 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
914 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
915 avctx->frame_number++;
921 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
924 if(buf_size < FF_MIN_BUFFER_SIZE){
925 av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
928 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
930 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
931 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
932 avctx->frame_number++;
933 emms_c(); //needed to avoid an emms_c() call before every return;
940 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
941 const AVSubtitle *sub)
944 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);
945 avctx->frame_number++;
951 * @param buf bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE larger then the actual read bytes
952 * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
953 * @param buf_size the size of the buffer in bytes
954 * @param got_picture_ptr zero if no frame could be decompressed, Otherwise, it is non zero
955 * @return -1 if error, otherwise return the number of
958 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
959 int *got_picture_ptr,
960 uint8_t *buf, int buf_size)
965 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
967 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
968 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
971 emms_c(); //needed to avoid an emms_c() call before every return;
973 if (*got_picture_ptr)
974 avctx->frame_number++;
981 /* decode an audio frame. return -1 if error, otherwise return the
982 *number of bytes used. If no frame could be decompressed,
983 *frame_size_ptr is zero. Otherwise, it is the decompressed frame
985 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
987 uint8_t *buf, int buf_size)
992 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
993 ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
995 avctx->frame_number++;
1001 /* decode a subtitle message. return -1 if error, otherwise return the
1002 *number of bytes used. If no subtitle could be decompressed,
1003 *got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
1004 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
1006 const uint8_t *buf, int buf_size)
1011 ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
1012 (uint8_t *)buf, buf_size);
1014 avctx->frame_number++;
1018 int avcodec_close(AVCodecContext *avctx)
1020 entangled_thread_counter++;
1021 if(entangled_thread_counter != 1){
1022 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1023 entangled_thread_counter--;
1027 if (avctx->codec->close)
1028 avctx->codec->close(avctx);
1029 avcodec_default_free_buffers(avctx);
1030 av_freep(&avctx->priv_data);
1031 avctx->codec = NULL;
1032 entangled_thread_counter--;
1036 AVCodec *avcodec_find_encoder(enum CodecID id)
1041 if (p->encode != NULL && p->id == id)
1048 AVCodec *avcodec_find_encoder_by_name(const char *name)
1053 if (p->encode != NULL && strcmp(name,p->name) == 0)
1060 AVCodec *avcodec_find_decoder(enum CodecID id)
1065 if (p->decode != NULL && p->id == id)
1072 AVCodec *avcodec_find_decoder_by_name(const char *name)
1077 if (p->decode != NULL && strcmp(name,p->name) == 0)
1084 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1086 const char *codec_name;
1089 char channels_str[100];
1093 p = avcodec_find_encoder(enc->codec_id);
1095 p = avcodec_find_decoder(enc->codec_id);
1098 codec_name = p->name;
1099 if (!encode && enc->codec_id == CODEC_ID_MP3) {
1100 if (enc->sub_id == 2)
1102 else if (enc->sub_id == 1)
1105 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1106 /* fake mpeg2 transport stream codec (currently not
1108 codec_name = "mpeg2ts";
1109 } else if (enc->codec_name[0] != '\0') {
1110 codec_name = enc->codec_name;
1112 /* output avi tags */
1113 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
1114 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
1115 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
1116 enc->codec_tag & 0xff,
1117 (enc->codec_tag >> 8) & 0xff,
1118 (enc->codec_tag >> 16) & 0xff,
1119 (enc->codec_tag >> 24) & 0xff,
1122 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
1127 switch(enc->codec_type) {
1128 case CODEC_TYPE_VIDEO:
1129 snprintf(buf, buf_size,
1131 codec_name, enc->mb_decision ? " (hq)" : "");
1132 if (enc->pix_fmt != PIX_FMT_NONE) {
1133 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1135 avcodec_get_pix_fmt_name(enc->pix_fmt));
1138 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1140 enc->width, enc->height);
1141 if(av_log_get_level() >= AV_LOG_DEBUG){
1142 int g= ff_gcd(enc->time_base.num, enc->time_base.den);
1143 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1145 enc->time_base.num/g, enc->time_base.den/g);
1149 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1150 ", q=%d-%d", enc->qmin, enc->qmax);
1152 bitrate = enc->bit_rate;
1154 case CODEC_TYPE_AUDIO:
1155 snprintf(buf, buf_size,
1158 switch (enc->channels) {
1160 strcpy(channels_str, "mono");
1163 strcpy(channels_str, "stereo");
1166 strcpy(channels_str, "5:1");
1169 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);
1172 if (enc->sample_rate) {
1173 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1179 /* for PCM codecs, compute bitrate directly */
1180 switch(enc->codec_id) {
1181 case CODEC_ID_PCM_S32LE:
1182 case CODEC_ID_PCM_S32BE:
1183 case CODEC_ID_PCM_U32LE:
1184 case CODEC_ID_PCM_U32BE:
1185 bitrate = enc->sample_rate * enc->channels * 32;
1187 case CODEC_ID_PCM_S24LE:
1188 case CODEC_ID_PCM_S24BE:
1189 case CODEC_ID_PCM_U24LE:
1190 case CODEC_ID_PCM_U24BE:
1191 case CODEC_ID_PCM_S24DAUD:
1192 bitrate = enc->sample_rate * enc->channels * 24;
1194 case CODEC_ID_PCM_S16LE:
1195 case CODEC_ID_PCM_S16BE:
1196 case CODEC_ID_PCM_U16LE:
1197 case CODEC_ID_PCM_U16BE:
1198 bitrate = enc->sample_rate * enc->channels * 16;
1200 case CODEC_ID_PCM_S8:
1201 case CODEC_ID_PCM_U8:
1202 case CODEC_ID_PCM_ALAW:
1203 case CODEC_ID_PCM_MULAW:
1204 bitrate = enc->sample_rate * enc->channels * 8;
1207 bitrate = enc->bit_rate;
1211 case CODEC_TYPE_DATA:
1212 snprintf(buf, buf_size, "Data: %s", codec_name);
1213 bitrate = enc->bit_rate;
1215 case CODEC_TYPE_SUBTITLE:
1216 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1217 bitrate = enc->bit_rate;
1220 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1224 if (enc->flags & CODEC_FLAG_PASS1)
1225 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1227 if (enc->flags & CODEC_FLAG_PASS2)
1228 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1232 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1233 ", %d kb/s", bitrate / 1000);
1237 unsigned avcodec_version( void )
1239 return LIBAVCODEC_VERSION_INT;
1242 unsigned avcodec_build( void )
1244 return LIBAVCODEC_BUILD;
1247 static void init_crcs(void){
1248 av_crc04C11DB7= av_mallocz_static(sizeof(AVCRC) * 257);
1249 av_crc8005 = av_mallocz_static(sizeof(AVCRC) * 257);
1250 av_crc07 = av_mallocz_static(sizeof(AVCRC) * 257);
1251 av_crc_init(av_crc04C11DB7, 0, 32, 0x04c11db7, sizeof(AVCRC)*257);
1252 av_crc_init(av_crc8005 , 0, 16, 0x8005 , sizeof(AVCRC)*257);
1253 av_crc_init(av_crc07 , 0, 8, 0x07 , sizeof(AVCRC)*257);
1256 /* must be called before any other functions */
1257 void avcodec_init(void)
1259 static int inited = 0;
1265 dsputil_static_init();
1270 * Flush buffers, should be called when seeking or when swicthing to a different stream.
1272 void avcodec_flush_buffers(AVCodecContext *avctx)
1274 if(avctx->codec->flush)
1275 avctx->codec->flush(avctx);
1278 void avcodec_default_free_buffers(AVCodecContext *s){
1281 if(s->internal_buffer==NULL) return;
1283 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1284 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1286 av_freep(&buf->base[j]);
1290 av_freep(&s->internal_buffer);
1292 s->internal_buffer_count=0;
1295 char av_get_pict_type_char(int pict_type){
1297 case I_TYPE: return 'I';
1298 case P_TYPE: return 'P';
1299 case B_TYPE: return 'B';
1300 case S_TYPE: return 'S';
1301 case SI_TYPE:return 'i';
1302 case SP_TYPE:return 'p';
1303 default: return '?';
1307 int av_get_bits_per_sample(enum CodecID codec_id){
1309 case CODEC_ID_PCM_ALAW:
1310 case CODEC_ID_PCM_MULAW:
1311 case CODEC_ID_PCM_S8:
1312 case CODEC_ID_PCM_U8:
1314 case CODEC_ID_PCM_S16BE:
1315 case CODEC_ID_PCM_S16LE:
1316 case CODEC_ID_PCM_U16BE:
1317 case CODEC_ID_PCM_U16LE:
1319 case CODEC_ID_PCM_S24DAUD:
1320 case CODEC_ID_PCM_S24BE:
1321 case CODEC_ID_PCM_S24LE:
1322 case CODEC_ID_PCM_U24BE:
1323 case CODEC_ID_PCM_U24LE:
1325 case CODEC_ID_PCM_S32BE:
1326 case CODEC_ID_PCM_S32LE:
1327 case CODEC_ID_PCM_U32BE:
1328 case CODEC_ID_PCM_U32LE:
1337 static int av_log_level = AV_LOG_INFO;
1339 static void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
1341 static int print_prefix=1;
1342 AVClass* avc= ptr ? *(AVClass**)ptr : NULL;
1343 if(level>av_log_level)
1346 if(print_prefix && avc) {
1347 fprintf(stderr, "[%s @ %p]", avc->item_name(ptr), avc);
1349 #define fprintf please_use_av_log
1351 print_prefix= strstr(fmt, "\n") != NULL;
1353 vfprintf(stderr, fmt, vl);
1356 static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback;
1358 void av_log(void* avcl, int level, const char *fmt, ...)
1362 av_vlog(avcl, level, fmt, vl);
1366 void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
1368 av_log_callback(avcl, level, fmt, vl);
1371 int av_log_get_level(void)
1373 return av_log_level;
1376 void av_log_set_level(int level)
1378 av_log_level = level;
1381 void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))
1383 av_log_callback = callback;
1386 #if !defined(HAVE_THREADS)
1387 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1392 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1406 /* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1407 * Also, tries to create file in /tmp first, if possible.
1408 * *prefix can be a character constant; *filename will be allocated internally.
1409 * Returns file descriptor of opened file (or -1 on error)
1410 * and opened file name in **filename. */
1411 int av_tempfile(char *prefix, char **filename) {
1414 *filename = tempnam(".", prefix);
1416 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1417 *filename = av_malloc(len);
1419 /* -----common section-----*/
1420 if (*filename == NULL) {
1421 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1425 fd = open(*filename, _O_RDWR | _O_BINARY | _O_CREAT, 0444);
1427 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1428 fd = mkstemp(*filename);
1430 snprintf(*filename, len, "./%sXXXXXX", prefix);
1431 fd = mkstemp(*filename);
1434 /* -----common section-----*/
1436 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1439 return fd; /* success */