change management of "ab" option in ffmpeg.c, so that it works as "b" option.
[libav.git] / libavcodec / utils.c
1 /*
2 * utils for libavcodec
3 * Copyright (c) 2001 Fabrice Bellard.
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /**
24 * @file utils.c
25 * utils.
26 */
27
28 #include "avcodec.h"
29 #include "dsputil.h"
30 #include "mpegvideo.h"
31 #include "integer.h"
32 #include "opt.h"
33 #include "crc.h"
34 #include <stdarg.h>
35 #include <limits.h>
36 #include <float.h>
37 #ifdef __MINGW32__
38 #include <fcntl.h>
39 #endif
40
41 const uint8_t ff_reverse[256]={
42 0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
43 0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
44 0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
45 0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
46 0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
47 0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
48 0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
49 0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
50 0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
51 0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
52 0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
53 0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
54 0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
55 0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
56 0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
57 0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
58 };
59
60 static int volatile entangled_thread_counter=0;
61
62 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
63 {
64 if(min_size < *size)
65 return ptr;
66
67 *size= FFMAX(17*min_size/16 + 32, min_size);
68
69 return av_realloc(ptr, *size);
70 }
71
72 static unsigned int last_static = 0;
73 static unsigned int allocated_static = 0;
74 static void** array_static = NULL;
75
76 void *av_mallocz_static(unsigned int size)
77 {
78 void *ptr = av_mallocz(size);
79
80 if(ptr){
81 array_static =av_fast_realloc(array_static, &allocated_static, sizeof(void*)*(last_static+1));
82 if(!array_static)
83 return NULL;
84 array_static[last_static++] = ptr;
85 }
86
87 return ptr;
88 }
89
90 void *ff_realloc_static(void *ptr, unsigned int size)
91 {
92 int i;
93 if(!ptr)
94 return av_mallocz_static(size);
95 /* Look for the old ptr */
96 for(i = 0; i < last_static; i++) {
97 if(array_static[i] == ptr) {
98 array_static[i] = av_realloc(array_static[i], size);
99 return array_static[i];
100 }
101 }
102 return NULL;
103
104 }
105
106 void av_free_static(void)
107 {
108 while(last_static){
109 av_freep(&array_static[--last_static]);
110 }
111 av_freep(&array_static);
112 }
113
114 /**
115 * Call av_free_static automatically before it's too late
116 */
117
118 static void do_free(void) __attribute__ ((destructor));
119
120 static void do_free(void)
121 {
122 av_free_static();
123 }
124
125
126 /* encoder management */
127 AVCodec *first_avcodec = NULL;
128
129 void register_avcodec(AVCodec *format)
130 {
131 AVCodec **p;
132 p = &first_avcodec;
133 while (*p != NULL) p = &(*p)->next;
134 *p = format;
135 format->next = NULL;
136 }
137
138 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
139 s->coded_width = width;
140 s->coded_height= height;
141 s->width = -((-width )>>s->lowres);
142 s->height= -((-height)>>s->lowres);
143 }
144
145 typedef struct InternalBuffer{
146 int last_pic_num;
147 uint8_t *base[4];
148 uint8_t *data[4];
149 int linesize[4];
150 }InternalBuffer;
151
152 #define INTERNAL_BUFFER_SIZE 32
153
154 #define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
155
156 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
157 int w_align= 1;
158 int h_align= 1;
159
160 switch(s->pix_fmt){
161 case PIX_FMT_YUV420P:
162 case PIX_FMT_YUYV422:
163 case PIX_FMT_UYVY422:
164 case PIX_FMT_YUV422P:
165 case PIX_FMT_YUV444P:
166 case PIX_FMT_GRAY8:
167 case PIX_FMT_GRAY16BE:
168 case PIX_FMT_GRAY16LE:
169 case PIX_FMT_YUVJ420P:
170 case PIX_FMT_YUVJ422P:
171 case PIX_FMT_YUVJ444P:
172 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
173 h_align= 16;
174 break;
175 case PIX_FMT_YUV411P:
176 case PIX_FMT_UYYVYY411:
177 w_align=32;
178 h_align=8;
179 break;
180 case PIX_FMT_YUV410P:
181 if(s->codec_id == CODEC_ID_SVQ1){
182 w_align=64;
183 h_align=64;
184 }
185 case PIX_FMT_RGB555:
186 if(s->codec_id == CODEC_ID_RPZA){
187 w_align=4;
188 h_align=4;
189 }
190 case PIX_FMT_PAL8:
191 if(s->codec_id == CODEC_ID_SMC){
192 w_align=4;
193 h_align=4;
194 }
195 break;
196 case PIX_FMT_BGR24:
197 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
198 w_align=4;
199 h_align=4;
200 }
201 break;
202 default:
203 w_align= 1;
204 h_align= 1;
205 break;
206 }
207
208 *width = ALIGN(*width , w_align);
209 *height= ALIGN(*height, h_align);
210 }
211
212 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
213 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
214 return 0;
215
216 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
217 return -1;
218 }
219
220 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
221 int i;
222 int w= s->width;
223 int h= s->height;
224 InternalBuffer *buf;
225 int *picture_number;
226
227 if(pic->data[0]!=NULL) {
228 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
229 return -1;
230 }
231 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
232 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
233 return -1;
234 }
235
236 if(avcodec_check_dimensions(s,w,h))
237 return -1;
238
239 if(s->internal_buffer==NULL){
240 s->internal_buffer= av_mallocz(INTERNAL_BUFFER_SIZE*sizeof(InternalBuffer));
241 }
242 #if 0
243 s->internal_buffer= av_fast_realloc(
244 s->internal_buffer,
245 &s->internal_buffer_size,
246 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
247 );
248 #endif
249
250 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
251 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE-1]).last_pic_num; //FIXME ugly hack
252 (*picture_number)++;
253
254 if(buf->base[0]){
255 pic->age= *picture_number - buf->last_pic_num;
256 buf->last_pic_num= *picture_number;
257 }else{
258 int h_chroma_shift, v_chroma_shift;
259 int pixel_size, size[3];
260 AVPicture picture;
261
262 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
263
264 avcodec_align_dimensions(s, &w, &h);
265
266 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
267 w+= EDGE_WIDTH*2;
268 h+= EDGE_WIDTH*2;
269 }
270 avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
271 pixel_size= picture.linesize[0]*8 / w;
272 //av_log(NULL, AV_LOG_ERROR, "%d %d %d %d\n", (int)picture.data[1], w, h, s->pix_fmt);
273 assert(pixel_size>=1);
274 //FIXME next ensures that linesize= 2^x uvlinesize, thats needed because some MC code assumes it
275 if(pixel_size == 3*8)
276 w= ALIGN(w, STRIDE_ALIGN<<h_chroma_shift);
277 else
278 w= ALIGN(pixel_size*w, STRIDE_ALIGN<<(h_chroma_shift+3)) / pixel_size;
279 size[1] = avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
280 size[0] = picture.linesize[0] * h;
281 size[1] -= size[0];
282 if(picture.data[2])
283 size[1]= size[2]= size[1]/2;
284 else
285 size[2]= 0;
286
287 buf->last_pic_num= -256*256*256*64;
288 memset(buf->base, 0, sizeof(buf->base));
289 memset(buf->data, 0, sizeof(buf->data));
290
291 for(i=0; i<3 && size[i]; i++){
292 const int h_shift= i==0 ? 0 : h_chroma_shift;
293 const int v_shift= i==0 ? 0 : v_chroma_shift;
294
295 buf->linesize[i]= picture.linesize[i];
296
297 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
298 if(buf->base[i]==NULL) return -1;
299 memset(buf->base[i], 128, size[i]);
300
301 // no edge if EDEG EMU or not planar YUV, we check for PAL8 redundantly to protect against a exploitable bug regression ...
302 if((s->flags&CODEC_FLAG_EMU_EDGE) || (s->pix_fmt == PIX_FMT_PAL8) || !size[2])
303 buf->data[i] = buf->base[i];
304 else
305 buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);
306 }
307 pic->age= 256*256*256*64;
308 }
309 pic->type= FF_BUFFER_TYPE_INTERNAL;
310
311 for(i=0; i<4; i++){
312 pic->base[i]= buf->base[i];
313 pic->data[i]= buf->data[i];
314 pic->linesize[i]= buf->linesize[i];
315 }
316 s->internal_buffer_count++;
317
318 return 0;
319 }
320
321 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
322 int i;
323 InternalBuffer *buf, *last;
324
325 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
326 assert(s->internal_buffer_count);
327
328 buf = NULL; /* avoids warning */
329 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
330 buf= &((InternalBuffer*)s->internal_buffer)[i];
331 if(buf->data[0] == pic->data[0])
332 break;
333 }
334 assert(i < s->internal_buffer_count);
335 s->internal_buffer_count--;
336 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
337
338 FFSWAP(InternalBuffer, *buf, *last);
339
340 for(i=0; i<3; i++){
341 pic->data[i]=NULL;
342 // pic->base[i]=NULL;
343 }
344 //printf("R%X\n", pic->opaque);
345 }
346
347 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
348 AVFrame temp_pic;
349 int i;
350
351 /* If no picture return a new buffer */
352 if(pic->data[0] == NULL) {
353 /* We will copy from buffer, so must be readable */
354 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
355 return s->get_buffer(s, pic);
356 }
357
358 /* If internal buffer type return the same buffer */
359 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
360 return 0;
361
362 /*
363 * Not internal type and reget_buffer not overridden, emulate cr buffer
364 */
365 temp_pic = *pic;
366 for(i = 0; i < 4; i++)
367 pic->data[i] = pic->base[i] = NULL;
368 pic->opaque = NULL;
369 /* Allocate new frame */
370 if (s->get_buffer(s, pic))
371 return -1;
372 /* Copy image data from old buffer to new buffer */
373 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
374 s->height);
375 s->release_buffer(s, &temp_pic); // Release old frame
376 return 0;
377 }
378
379 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){
380 int i;
381
382 for(i=0; i<count; i++){
383 int r= func(c, arg[i]);
384 if(ret) ret[i]= r;
385 }
386 return 0;
387 }
388
389 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
390 return fmt[0];
391 }
392
393 static const char* context_to_name(void* ptr) {
394 AVCodecContext *avc= ptr;
395
396 if(avc && avc->codec && avc->codec->name)
397 return avc->codec->name;
398 else
399 return "NULL";
400 }
401
402 #define OFFSET(x) offsetof(AVCodecContext,x)
403 #define DEFAULT 0 //should be NAN but it doesnt work as its not a constant in glibc as required by ANSI/ISO C
404 //these names are too long to be readable
405 #define V AV_OPT_FLAG_VIDEO_PARAM
406 #define A AV_OPT_FLAG_AUDIO_PARAM
407 #define S AV_OPT_FLAG_SUBTITLE_PARAM
408 #define E AV_OPT_FLAG_ENCODING_PARAM
409 #define D AV_OPT_FLAG_DECODING_PARAM
410
411 #define AV_CODEC_DEFAULT_BITRATE 200*1000
412
413 static const AVOption options[]={
414 {"b", "set bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, AV_CODEC_DEFAULT_BITRATE, INT_MIN, INT_MAX, V|A|E},
415 {"bt", "set video bitrate tolerance (in bits/s)", OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, AV_CODEC_DEFAULT_BITRATE*20, 1, INT_MAX, V|E},
416 {"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|A|E|D, "flags"},
417 {"mv4", "use four motion vector by macroblock (mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_4MV, INT_MIN, INT_MAX, V|E, "flags"},
418 {"obmc", "use overlapped block motion compensation (h263+)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_OBMC, INT_MIN, INT_MAX, V|E, "flags"},
419 {"qpel", "use 1/4 pel motion compensation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QPEL, INT_MIN, INT_MAX, V|E, "flags"},
420 {"loop", "use loop filter", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOOP_FILTER, INT_MIN, INT_MAX, V|E, "flags"},
421 {"qscale", "use fixed qscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QSCALE, INT_MIN, INT_MAX, 0, "flags"},
422 {"gmc", "use gmc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GMC, INT_MIN, INT_MAX, V|E, "flags"},
423 {"mv0", "always try a mb with mv=<0,0>", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_MV0, INT_MIN, INT_MAX, V|E, "flags"},
424 {"part", "use data partitioning", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PART, INT_MIN, INT_MAX, V|E, "flags"},
425 {"input_preserved", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INPUT_PRESERVED, INT_MIN, INT_MAX, 0, "flags"},
426 {"pass1", "use internal 2pass ratecontrol in first pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS1, INT_MIN, INT_MAX, 0, "flags"},
427 {"pass2", "use internal 2pass ratecontrol in second pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS2, INT_MIN, INT_MAX, 0, "flags"},
428 {"extern_huff", "use external huffman table (for mjpeg)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EXTERN_HUFF, INT_MIN, INT_MAX, 0, "flags"},
429 {"gray", "only decode/encode grayscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GRAY, INT_MIN, INT_MAX, V|E|D, "flags"},
430 {"emu_edge", "don't draw edges", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EMU_EDGE, INT_MIN, INT_MAX, 0, "flags"},
431 {"psnr", "error[?] variables will be set during encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PSNR, INT_MIN, INT_MAX, V|E, "flags"},
432 {"truncated", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRUNCATED, INT_MIN, INT_MAX, 0, "flags"},
433 {"naq", "normalize adaptive quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_NORMALIZE_AQP, INT_MIN, INT_MAX, V|E, "flags"},
434 {"ildct", "use interlaced dct", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_DCT, INT_MIN, INT_MAX, V|E, "flags"},
435 {"low_delay", "force low delay", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOW_DELAY, INT_MIN, INT_MAX, V|D|E, "flags"},
436 {"alt", "enable alternate scantable (mpeg2/mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_ALT_SCAN, INT_MIN, INT_MAX, V|E, "flags"},
437 {"trell", "use trellis quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRELLIS_QUANT, INT_MIN, INT_MAX, V|E, "flags"},
438 {"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"},
439 {"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"},
440 {"aic", "h263 advanced intra coding / mpeg4 ac prediction", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_AC_PRED, INT_MIN, INT_MAX, V|E, "flags"},
441 {"umv", "use unlimited motion vectors", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_UMV, INT_MIN, INT_MAX, V|E, "flags"},
442 {"cbp", "use rate distortion optimization for cbp", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CBP_RD, INT_MIN, INT_MAX, V|E, "flags"},
443 {"qprd", "use rate distortion optimization for qp selection", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QP_RD, INT_MIN, INT_MAX, V|E, "flags"},
444 {"aiv", "h263 alternative inter vlc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_AIV, INT_MIN, INT_MAX, V|E, "flags"},
445 {"slice", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_SLICE_STRUCT, INT_MIN, INT_MAX, V|E, "flags"},
446 {"ilme", "interlaced motion estimation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_ME, INT_MIN, INT_MAX, V|E, "flags"},
447 {"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"},
448 {"cgop", "closed gop", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CLOSED_GOP, INT_MIN, INT_MAX, V|E, "flags"},
449 {"fast", "allow non spec compliant speedup tricks", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FAST, INT_MIN, INT_MAX, V|E, "flags2"},
450 {"sgop", "strictly enforce gop size", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_STRICT_GOP, INT_MIN, INT_MAX, V|E, "flags2"},
451 {"noout", "skip bitstream encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NO_OUTPUT, INT_MIN, INT_MAX, V|E, "flags2"},
452 {"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"},
453 {"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
454 {"me_method", "set motion estimation method", OFFSET(me_method), FF_OPT_TYPE_INT, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method"},
455 {"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
456 {"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
457 {"g", "set the group of picture size", OFFSET(gop_size), FF_OPT_TYPE_INT, 12, INT_MIN, INT_MAX, V|E},
458 {"rate_emu", "frame rate emulation", OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
459 {"ar", "set audio sampling rate (in Hz)", OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
460 {"ac", "set number of audio channels", OFFSET(channels), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
461 {"cutoff", "set cutoff bandwidth", OFFSET(cutoff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
462 {"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
463 {"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
464 {"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
465 {"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
466 {"qcomp", "video quantizer scale compression (VBR)", OFFSET(qcompress), FF_OPT_TYPE_FLOAT, 0.5, FLT_MIN, FLT_MAX, V|E},
467 {"qblur", "video quantizer scale blur (VBR)", OFFSET(qblur), FF_OPT_TYPE_FLOAT, 0.5, FLT_MIN, FLT_MAX, V|E},
468 {"qmin", "min video quantizer scale (VBR)", OFFSET(qmin), FF_OPT_TYPE_INT, 2, 1, 51, V|E},
469 {"qmax", "max video quantizer scale (VBR)", OFFSET(qmax), FF_OPT_TYPE_INT, 31, 1, 51, V|E},
470 {"qdiff", "max difference between the quantizer scale (VBR)", OFFSET(max_qdiff), FF_OPT_TYPE_INT, 3, INT_MIN, INT_MAX, V|E},
471 {"bf", "use 'frames' B frames", OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, 0, FF_MAX_B_FRAMES, V|E},
472 {"b_qfactor", "qp factor between p and b frames", OFFSET(b_quant_factor), FF_OPT_TYPE_FLOAT, 1.25, FLT_MIN, FLT_MAX, V|E},
473 {"rc_strategy", "ratecontrol method", OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
474 {"b_strategy", "strategy to choose between I/P/B-frames", OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},
475 {"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
476 #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
477 {"rtp_mode", NULL, OFFSET(rtp_mode), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
478 #endif
479 {"ps", "rtp payload size in bits", OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
480 {"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
481 {"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
482 {"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
483 {"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
484 {"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
485 {"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
486 {"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
487 {"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
488 {"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
489 {"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
490 {"bug", "workaround not auto detected encoder bugs", OFFSET(workaround_bugs), FF_OPT_TYPE_FLAGS, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
491 {"autodetect", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
492 {"old_msmpeg4", "some old lavc generated msmpeg4v3 files (no autodetection)", 0, FF_OPT_TYPE_CONST, FF_BUG_OLD_MSMPEG4, INT_MIN, INT_MAX, V|D, "bug"},
493 {"xvid_ilace", "Xvid interlacing bug (autodetected if fourcc==XVIX)", 0, FF_OPT_TYPE_CONST, FF_BUG_XVID_ILACE, INT_MIN, INT_MAX, V|D, "bug"},
494 {"ump4", "(autodetected if fourcc==UMP4)", 0, FF_OPT_TYPE_CONST, FF_BUG_UMP4, INT_MIN, INT_MAX, V|D, "bug"},
495 {"no_padding", "padding bug (autodetected)", 0, FF_OPT_TYPE_CONST, FF_BUG_NO_PADDING, INT_MIN, INT_MAX, V|D, "bug"},
496 {"amv", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AMV, INT_MIN, INT_MAX, V|D, "bug"},
497 {"ac_vlc", "illegal vlc bug (autodetected per fourcc)", 0, FF_OPT_TYPE_CONST, FF_BUG_AC_VLC, INT_MIN, INT_MAX, V|D, "bug"},
498 {"qpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
499 {"std_qpel", "old standard qpel (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, FF_BUG_STD_QPEL, INT_MIN, INT_MAX, V|D, "bug"},
500 {"qpel_chroma2", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA2, INT_MIN, INT_MAX, V|D, "bug"},
501 {"direct_blocksize", "direct-qpel-blocksize bug (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, FF_BUG_DIRECT_BLOCKSIZE, INT_MIN, INT_MAX, V|D, "bug"},
502 {"edge", "edge padding bug (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, FF_BUG_EDGE, INT_MIN, INT_MAX, V|D, "bug"},
503 {"hpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_HPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
504 {"dc_clip", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DC_CLIP, INT_MIN, INT_MAX, V|D, "bug"},
505 {"ms", "workaround various bugs in microsofts broken decoders", 0, FF_OPT_TYPE_CONST, FF_BUG_MS, INT_MIN, INT_MAX, V|D, "bug"},
506 {"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},
507 {"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},
508 {"strict", "how strictly to follow the standards", OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|V|D, "strict"},
509 {"very", "strictly conform to a older more strict version of the spec or reference software", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_VERY_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
510 {"strict", "strictly conform to all the things in the spec no matter what consequences", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
511 {"normal", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_NORMAL, INT_MIN, INT_MAX, V|E, "strict"},
512 {"inofficial", "allow inofficial extensions", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_INOFFICIAL, INT_MIN, INT_MAX, V|E, "strict"},
513 {"experimental", "allow non standarized experimental things", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|E, "strict"},
514 {"b_qoffset", "qp offset between p and b frames", OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, 1.25, FLT_MIN, FLT_MAX, V|E},
515 {"er", "set error resilience strategy", OFFSET(error_resilience), FF_OPT_TYPE_INT, FF_ER_CAREFUL, INT_MIN, INT_MAX, A|V|D, "er"},
516 {"careful", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
517 {"compliant", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_COMPLIANT, INT_MIN, INT_MAX, V|D, "er"},
518 {"aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
519 {"very_aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_VERY_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
520 {"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
521 {"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
522 {"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
523 {"mpeg_quant", "use MPEG quantizers instead of H.263", OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
524 {"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
525 {"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
526 {"qsquish", "how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)", OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, 0, 99, V|E},
527 {"rc_qmod_amp", "experimental quantizer modulation", OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
528 {"rc_qmod_freq", "experimental quantizer modulation", OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
529 {"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
530 {"rc_eq", "set rate control equation", OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX, V|E},
531 {"maxrate", "set max video bitrate tolerance (in bits/s)", OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
532 {"minrate", "set min video bitrate tolerance (in bits/s)", OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
533 {"bufsize", "set ratecontrol buffer size (in bits)", OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
534 {"rc_buf_aggressivity", "currently useless", OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, 1.0, FLT_MIN, FLT_MAX, V|E},
535 {"i_qfactor", "qp factor between p and i frames", OFFSET(i_quant_factor), FF_OPT_TYPE_FLOAT, -0.8, -FLT_MAX, FLT_MAX, V|E},
536 {"i_qoffset", "qp offset between p and i frames", OFFSET(i_quant_offset), FF_OPT_TYPE_FLOAT, 0.0, -FLT_MAX, FLT_MAX, V|E},
537 {"rc_init_cplx", "initial complexity for 1-pass encoding", OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
538 {"dct", "DCT algorithm", OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E, "dct"},
539 {"auto", "autoselect a good one (default)", 0, FF_OPT_TYPE_CONST, FF_DCT_AUTO, INT_MIN, INT_MAX, V|E, "dct"},
540 {"fastint", "fast integer", 0, FF_OPT_TYPE_CONST, FF_DCT_FASTINT, INT_MIN, INT_MAX, V|E, "dct"},
541 {"int", "accurate integer", 0, FF_OPT_TYPE_CONST, FF_DCT_INT, INT_MIN, INT_MAX, V|E, "dct"},
542 {"mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MMX, INT_MIN, INT_MAX, V|E, "dct"},
543 {"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MLIB, INT_MIN, INT_MAX, V|E, "dct"},
544 {"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_ALTIVEC, INT_MIN, INT_MAX, V|E, "dct"},
545 {"faan", "floating point AAN DCT", 0, FF_OPT_TYPE_CONST, FF_DCT_FAAN, INT_MIN, INT_MAX, V|E, "dct"},
546 {"lumi_mask", "compresses bright areas stronger than medium ones", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
547 {"tcplx_mask", "temporal complexity masking", OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
548 {"scplx_mask", "spatial complexity masking", OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
549 {"p_mask", "inter masking", OFFSET(p_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
550 {"dark_mask", "compresses dark areas stronger than medium ones", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
551 {"unused", NULL, OFFSET(unused), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
552 {"idct", "select IDCT implementation", OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E|D, "idct"},
553 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_AUTO, INT_MIN, INT_MAX, V|E|D, "idct"},
554 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_INT, INT_MIN, INT_MAX, V|E|D, "idct"},
555 {"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLE, INT_MIN, INT_MAX, V|E|D, "idct"},
556 {"simplemmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
557 {"libmpeg2mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_LIBMPEG2MMX, INT_MIN, INT_MAX, V|E|D, "idct"},
558 {"ps2", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_PS2, INT_MIN, INT_MAX, V|E|D, "idct"},
559 {"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_MLIB, INT_MIN, INT_MAX, V|E|D, "idct"},
560 {"arm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ARM, INT_MIN, INT_MAX, V|E|D, "idct"},
561 {"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ALTIVEC, INT_MIN, INT_MAX, V|E|D, "idct"},
562 {"sh4", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SH4, INT_MIN, INT_MAX, V|E|D, "idct"},
563 {"simplearm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARM, INT_MIN, INT_MAX, V|E|D, "idct"},
564 {"simplearmv5te", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARMV5TE, INT_MIN, INT_MAX, V|E|D, "idct"},
565 {"h264", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_H264, INT_MIN, INT_MAX, V|E|D, "idct"},
566 {"vp3", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_VP3, INT_MIN, INT_MAX, V|E|D, "idct"},
567 {"ipp", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_IPP, INT_MIN, INT_MAX, V|E|D, "idct"},
568 {"xvidmmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_XVIDMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
569 {"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
570 {"ec", "set error concealment strategy", OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, 3, INT_MIN, INT_MAX, V|D, "ec"},
571 {"guess_mvs", "iterative motion vector (MV) search (slow)", 0, FF_OPT_TYPE_CONST, FF_EC_GUESS_MVS, INT_MIN, INT_MAX, V|D, "ec"},
572 {"deblock", "use strong deblock filter for damaged MBs", 0, FF_OPT_TYPE_CONST, FF_EC_DEBLOCK, INT_MIN, INT_MAX, V|D, "ec"},
573 {"bits_per_sample", NULL, OFFSET(bits_per_sample), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
574 {"pred", "prediction method", OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "pred"},
575 {"left", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_LEFT, INT_MIN, INT_MAX, V|E, "pred"},
576 {"plane", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_PLANE, INT_MIN, INT_MAX, V|E, "pred"},
577 {"median", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_MEDIAN, INT_MIN, INT_MAX, V|E, "pred"},
578 {"aspect", "sample aspect ratio", OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, 0, 10, V|E},
579 {"debug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, DEFAULT, 0, INT_MAX, V|A|S|E|D, "debug"},
580 {"pict", "picture info", 0, FF_OPT_TYPE_CONST, FF_DEBUG_PICT_INFO, INT_MIN, INT_MAX, V|D, "debug"},
581 {"rc", "rate control", 0, FF_OPT_TYPE_CONST, FF_DEBUG_RC, INT_MIN, INT_MAX, V|E, "debug"},
582 {"bitstream", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BITSTREAM, INT_MIN, INT_MAX, V|D, "debug"},
583 {"mb_type", "macroblock (MB) type", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
584 {"qp", "per-block quantization parameter (QP)", 0, FF_OPT_TYPE_CONST, FF_DEBUG_QP, INT_MIN, INT_MAX, V|D, "debug"},
585 {"mv", "motion vector", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MV, INT_MIN, INT_MAX, V|D, "debug"},
586 {"dct_coeff", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_DCT_COEFF, INT_MIN, INT_MAX, V|D, "debug"},
587 {"skip", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_SKIP, INT_MIN, INT_MAX, V|D, "debug"},
588 {"startcode", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_STARTCODE, INT_MIN, INT_MAX, V|D, "debug"},
589 {"pts", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PTS, INT_MIN, INT_MAX, V|D, "debug"},
590 {"er", "error resilience", 0, FF_OPT_TYPE_CONST, FF_DEBUG_ER, INT_MIN, INT_MAX, V|D, "debug"},
591 {"mmco", "memory management control operations (H.264)", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MMCO, INT_MIN, INT_MAX, V|D, "debug"},
592 {"bugs", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BUGS, INT_MIN, INT_MAX, V|D, "debug"},
593 {"vis_qp", "visualize quantization parameter (QP), lower QP are tinted greener", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_QP, INT_MIN, INT_MAX, V|D, "debug"},
594 {"vis_mb_type", "visualize block types", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
595 {"vismv", "visualize motion vectors (MVs)", OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|D, "debug_mv"},
596 {"pf", "forward predicted MVs of P-frames", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_P_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
597 {"bf", "forward predicted MVs of B-frames", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
598 {"bb", "backward predicted MVs of B-frames", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_BACK, INT_MIN, INT_MAX, V|D, "debug_mv"},
599 {"mb_qmin", "obsolete, use qmin", OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
600 {"mb_qmax", "obsolete, use qmax", OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
601 {"cmp", "full pel me compare function", OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
602 {"subcmp", "sub pel me compare function", OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
603 {"mbcmp", "macroblock compare function", OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
604 {"ildctcmp", "interlaced dct compare function", OFFSET(ildct_cmp), FF_OPT_TYPE_INT, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
605 {"dia_size", "diamond type & size for motion estimation", OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
606 {"last_pred", "amount of motion predictors from the previous frame", OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
607 {"preme", "pre motion estimation", OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
608 {"precmp", "pre motion estimation compare function", OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
609 {"sad", "sum of absolute differences, fast (default)", 0, FF_OPT_TYPE_CONST, FF_CMP_SAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
610 {"sse", "sum of squared errors", 0, FF_OPT_TYPE_CONST, FF_CMP_SSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
611 {"satd", "sum of absolute Hadamard transformed differences", 0, FF_OPT_TYPE_CONST, FF_CMP_SATD, INT_MIN, INT_MAX, V|E, "cmp_func"},
612 {"dct", "sum of absolute DCT transformed differences", 0, FF_OPT_TYPE_CONST, FF_CMP_DCT, INT_MIN, INT_MAX, V|E, "cmp_func"},
613 {"psnr", "sum of squared quantization errors (avoid, low quality)", 0, FF_OPT_TYPE_CONST, FF_CMP_PSNR, INT_MIN, INT_MAX, V|E, "cmp_func"},
614 {"bit", "number of bits needed for the block", 0, FF_OPT_TYPE_CONST, FF_CMP_BIT, INT_MIN, INT_MAX, V|E, "cmp_func"},
615 {"rd", "rate distortion optimal, slow", 0, FF_OPT_TYPE_CONST, FF_CMP_RD, INT_MIN, INT_MAX, V|E, "cmp_func"},
616 {"zero", "0", 0, FF_OPT_TYPE_CONST, FF_CMP_ZERO, INT_MIN, INT_MAX, V|E, "cmp_func"},
617 {"vsad", "sum of absolute vertical differences", 0, FF_OPT_TYPE_CONST, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
618 {"vsse","sum of squared vertical differences", 0, FF_OPT_TYPE_CONST, FF_CMP_VSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
619 {"nsse", "noise preserving sum of squared differences", 0, FF_OPT_TYPE_CONST, FF_CMP_NSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
620 #ifdef CONFIG_SNOW_ENCODER
621 {"w53", "5/3 wavelet, only used in snow", 0, FF_OPT_TYPE_CONST, FF_CMP_W53, INT_MIN, INT_MAX, V|E, "cmp_func"},
622 {"w97", "9/7 wavelet, only used in snow", 0, FF_OPT_TYPE_CONST, FF_CMP_W97, INT_MIN, INT_MAX, V|E, "cmp_func"},
623 #endif
624 {"dctmax", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
625 {"chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_CHROMA, INT_MIN, INT_MAX, V|E, "cmp_func"},
626 {"pre_dia_size", "diamond type & size for motion estimation pre-pass", OFFSET(pre_dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
627 {"subq", "sub pel motion estimation quality", OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
628 {"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
629 {"me_range", "limit motion vectors range (1023 for DivX player)", OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
630 {"ibias", "intra quant bias", OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},
631 {"pbias", "inter quant bias", OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},
632 {"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
633 {"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
634 {"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
635 {"coder", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "coder"},
636 {"vlc", "variable length coder / huffman coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_VLC, INT_MIN, INT_MAX, V|E, "coder"},
637 {"ac", "arithmetic coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_AC, INT_MIN, INT_MAX, V|E, "coder"},
638 {"context", "context model", OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
639 {"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
640 {"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
641 {"mbd", "macroblock decision algorithm (high quality mode)", OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "mbd"},
642 {"simple", "use mbcmp (default)", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_SIMPLE, INT_MIN, INT_MAX, V|E, "mbd"},
643 {"bits", "use fewest bits", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_BITS, INT_MIN, INT_MAX, V|E, "mbd"},
644 {"rd", "use best rate distortion", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_RD, INT_MIN, INT_MAX, V|E, "mbd"},
645 {"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
646 {"sc_threshold", "scene change threshold", OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
647 {"lmin", "min lagrange factor (VBR)", OFFSET(lmin), FF_OPT_TYPE_INT, 2*FF_QP2LAMBDA, 0, INT_MAX, V|E},
648 {"lmax", "max lagrange factor (VBR)", OFFSET(lmax), FF_OPT_TYPE_INT, 31*FF_QP2LAMBDA, 0, INT_MAX, V|E},
649 {"nr", "noise reduction", OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
650 {"rc_init_occupancy", "number of bits which should be loaded into the rc buffer before decoding starts", OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
651 {"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
652 {"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_FLAGS, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|A|E|D, "flags2"},
653 {"error", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
654 {"antialias", "MP3 antialias algorithm", OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "aa"},
655 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_AUTO, INT_MIN, INT_MAX, V|D, "aa"},
656 {"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FASTINT, INT_MIN, INT_MAX, V|D, "aa"},
657 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_INT, INT_MIN, INT_MAX, V|D, "aa"},
658 {"float", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FLOAT, INT_MIN, INT_MAX, V|D, "aa"},
659 {"qns", "quantizer noise shaping", OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
660 {"threads", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E|D},
661 {"me_threshold", "motion estimaton threshold", OFFSET(me_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
662 {"mb_threshold", "macroblock threshold", OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
663 {"dc", "intra_dc_precision", OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},
664 {"nssew", "nsse weight", OFFSET(nsse_weight), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
665 {"skip_top", "number of macroblock rows at the top which are skipped", OFFSET(skip_top), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
666 {"skip_bottom", "number of macroblock rows at the bottom which are skipped", OFFSET(skip_bottom), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
667 {"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
668 {"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
669 {"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
670 {"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
671 {"lowres", "decode at 1= 1/2, 2=1/4, 3=1/8 resolutions", OFFSET(lowres), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|D},
672 {"skip_threshold", "frame skip threshold", OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
673 {"skip_factor", "frame skip factor", OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
674 {"skip_exp", "frame skip exponent", OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
675 {"skipcmp", "frame skip compare function", OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
676 {"border_mask", "increases the quantizer for macroblocks close to borders", OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
677 {"mblmin", "min macroblock lagrange factor (VBR)", OFFSET(mb_lmin), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 2, 1, FF_LAMBDA_MAX, V|E},
678 {"mblmax", "max macroblock lagrange factor (VBR)", OFFSET(mb_lmax), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 31, 1, FF_LAMBDA_MAX, V|E},
679 {"mepc", "motion estimation bitrate penalty compensation (1.0 = 256)", OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, 256, INT_MIN, INT_MAX, V|E},
680 {"bidir_refine", "refine the two motion vectors used in bidirectional macroblocks", OFFSET(bidir_refine), FF_OPT_TYPE_INT, DEFAULT, 0, 4, V|E},
681 {"brd_scale", "downscales frames for dynamic B-frame decision", OFFSET(brd_scale), FF_OPT_TYPE_INT, DEFAULT, 0, 10, V|E},
682 {"crf", "enables constant quality mode, and selects the quality (x264)", OFFSET(crf), FF_OPT_TYPE_FLOAT, DEFAULT, 0, 51, V|E},
683 {"cqp", "constant quantization parameter rate control method", OFFSET(cqp), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, V|E},
684 {"keyint_min", "minimum interval between IDR-frames (x264)", OFFSET(keyint_min), FF_OPT_TYPE_INT, 25, INT_MIN, INT_MAX, V|E},
685 {"refs", "reference frames to consider for motion compensation (Snow)", OFFSET(refs), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E},
686 {"chromaoffset", "chroma qp offset from luma", OFFSET(chromaoffset), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
687 {"bframebias", "influences how often B-frames are used", OFFSET(bframebias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
688 {"trellis", "rate-distortion optimal quantization", OFFSET(trellis), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
689 {"directpred", "direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)", OFFSET(directpred), FF_OPT_TYPE_INT, 2, INT_MIN, INT_MAX, V|E},
690 {"bpyramid", "allows B-frames to be used as references for predicting", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BPYRAMID, INT_MIN, INT_MAX, V|E, "flags2"},
691 {"wpred", "weighted biprediction for b-frames (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_WPRED, INT_MIN, INT_MAX, V|E, "flags2"},
692 {"mixed_refs", "one reference per partition, as opposed to one reference per macroblock", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_MIXED_REFS, INT_MIN, INT_MAX, V|E, "flags2"},
693 {"8x8dct", "high profile 8x8 transform (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_8X8DCT, INT_MIN, INT_MAX, V|E, "flags2"},
694 {"fastpskip", "fast pskip (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|E, "flags2"},
695 {"aud", "access unit delimiters (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_AUD, INT_MIN, INT_MAX, V|E, "flags2"},
696 {"brdo", "b-frame rate-distortion optimization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BRDO, INT_MIN, INT_MAX, V|E, "flags2"},
697 {"skiprd", "RD optimal MB level residual skiping", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_SKIP_RD, INT_MIN, INT_MAX, V|E, "flags2"},
698 {"complexityblur", "reduce fluctuations in qp (before curve compression)", OFFSET(complexityblur), FF_OPT_TYPE_FLOAT, 20.0, FLT_MIN, FLT_MAX, V|E},
699 {"deblockalpha", "in-loop deblocking filter alphac0 parameter", OFFSET(deblockalpha), FF_OPT_TYPE_INT, DEFAULT, -6, 6, V|E},
700 {"deblockbeta", "in-loop deblocking filter beta parameter", OFFSET(deblockbeta), FF_OPT_TYPE_INT, DEFAULT, -6, 6, V|E},
701 {"partitions", "macroblock subpartition sizes to consider", OFFSET(partitions), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|E, "partitions"},
702 {"parti4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I4X4, INT_MIN, INT_MAX, V|E, "partitions"},
703 {"parti8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I8X8, INT_MIN, INT_MAX, V|E, "partitions"},
704 {"partp4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P4X4, INT_MIN, INT_MAX, V|E, "partitions"},
705 {"partp8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P8X8, INT_MIN, INT_MAX, V|E, "partitions"},
706 {"partb8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_B8X8, INT_MIN, INT_MAX, V|E, "partitions"},
707 {"sc_factor", "multiplied by qscale for each frame and added to scene_change_score", OFFSET(scenechange_factor), FF_OPT_TYPE_INT, 6, 0, INT_MAX, V|E},
708 {"mv0_threshold", NULL, OFFSET(mv0_threshold), FF_OPT_TYPE_INT, 256, 0, INT_MAX, V|E},
709 {"ivlc", "intra vlc table", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_INTRA_VLC, INT_MIN, INT_MAX, V|E, "flags2"},
710 {"b_sensitivity", "adjusts sensitivity of b_frame_strategy 1", OFFSET(b_sensitivity), FF_OPT_TYPE_INT, 40, 1, INT_MAX, V|E},
711 {"compression_level", NULL, OFFSET(compression_level), FF_OPT_TYPE_INT, FF_COMPRESSION_DEFAULT, INT_MIN, INT_MAX, V|A|E},
712 {"use_lpc", "sets whether to use LPC mode (FLAC)", OFFSET(use_lpc), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
713 {"lpc_coeff_precision", "LPC coefficient precision (FLAC)", OFFSET(lpc_coeff_precision), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|E},
714 {"min_prediction_order", NULL, OFFSET(min_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
715 {"max_prediction_order", NULL, OFFSET(max_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
716 {"prediction_order_method", "search method for selecting prediction order", OFFSET(prediction_order_method), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
717 {"min_partition_order", NULL, OFFSET(min_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
718 {"max_partition_order", NULL, OFFSET(max_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
719 {"timecode_frame_start", "GOP timecode frame start number, in non drop frame format", OFFSET(timecode_frame_start), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|E},
720 {"drop_frame_timecode", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_DROP_FRAME_TIMECODE, INT_MIN, INT_MAX, V|E, "flags2"},
721 {"non_linear_q", "use non linear quantizer", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NON_LINEAR_QUANT, INT_MIN, INT_MAX, V|E, "flags2"},
722 {NULL},
723 };
724
725 #undef A
726 #undef V
727 #undef S
728 #undef E
729 #undef D
730 #undef DEFAULT
731
732 static AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options };
733
734 void avcodec_get_context_defaults(AVCodecContext *s){
735 memset(s, 0, sizeof(AVCodecContext));
736
737 s->av_class= &av_codec_context_class;
738
739 av_opt_set_defaults(s);
740
741 s->rc_eq= "tex^qComp";
742 s->time_base= (AVRational){0,1};
743 s->get_buffer= avcodec_default_get_buffer;
744 s->release_buffer= avcodec_default_release_buffer;
745 s->get_format= avcodec_default_get_format;
746 s->execute= avcodec_default_execute;
747 s->sample_aspect_ratio= (AVRational){0,1};
748 s->pix_fmt= PIX_FMT_NONE;
749 s->sample_fmt= SAMPLE_FMT_S16; // FIXME: set to NONE
750
751 s->palctrl = NULL;
752 s->reget_buffer= avcodec_default_reget_buffer;
753 }
754
755 AVCodecContext *avcodec_alloc_context(void){
756 AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
757
758 if(avctx==NULL) return NULL;
759
760 avcodec_get_context_defaults(avctx);
761
762 return avctx;
763 }
764
765 void avcodec_get_frame_defaults(AVFrame *pic){
766 memset(pic, 0, sizeof(AVFrame));
767
768 pic->pts= AV_NOPTS_VALUE;
769 pic->key_frame= 1;
770 }
771
772 AVFrame *avcodec_alloc_frame(void){
773 AVFrame *pic= av_malloc(sizeof(AVFrame));
774
775 if(pic==NULL) return NULL;
776
777 avcodec_get_frame_defaults(pic);
778
779 return pic;
780 }
781
782 int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
783 {
784 int ret= -1;
785
786 entangled_thread_counter++;
787 if(entangled_thread_counter != 1){
788 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
789 goto end;
790 }
791
792 if(avctx->codec)
793 goto end;
794
795 if (codec->priv_data_size > 0) {
796 avctx->priv_data = av_mallocz(codec->priv_data_size);
797 if (!avctx->priv_data)
798 goto end;
799 } else {
800 avctx->priv_data = NULL;
801 }
802
803 if(avctx->coded_width && avctx->coded_height)
804 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
805 else if(avctx->width && avctx->height)
806 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
807
808 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
809 av_freep(&avctx->priv_data);
810 goto end;
811 }
812
813 avctx->codec = codec;
814 avctx->codec_id = codec->id;
815 avctx->frame_number = 0;
816 ret = avctx->codec->init(avctx);
817 if (ret < 0) {
818 av_freep(&avctx->priv_data);
819 avctx->codec= NULL;
820 goto end;
821 }
822 ret=0;
823 end:
824 entangled_thread_counter--;
825 return ret;
826 }
827
828 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
829 const short *samples)
830 {
831 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
832 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
833 return -1;
834 }
835 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
836 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
837 avctx->frame_number++;
838 return ret;
839 }else
840 return 0;
841 }
842
843 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
844 const AVFrame *pict)
845 {
846 if(buf_size < FF_MIN_BUFFER_SIZE){
847 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
848 return -1;
849 }
850 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
851 return -1;
852 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
853 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
854 avctx->frame_number++;
855 emms_c(); //needed to avoid an emms_c() call before every return;
856
857 return ret;
858 }else
859 return 0;
860 }
861
862 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
863 const AVSubtitle *sub)
864 {
865 int ret;
866 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);
867 avctx->frame_number++;
868 return ret;
869 }
870
871 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
872 int *got_picture_ptr,
873 uint8_t *buf, int buf_size)
874 {
875 int ret;
876
877 *got_picture_ptr= 0;
878 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
879 return -1;
880 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
881 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
882 buf, buf_size);
883
884 emms_c(); //needed to avoid an emms_c() call before every return;
885
886 if (*got_picture_ptr)
887 avctx->frame_number++;
888 }else
889 ret= 0;
890
891 return ret;
892 }
893
894 int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
895 int *frame_size_ptr,
896 uint8_t *buf, int buf_size)
897 {
898 int ret;
899
900 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
901 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
902 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
903 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
904 return -1;
905 }
906 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
907 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t) ||
908 *frame_size_ptr < buf_size){
909 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
910 return -1;
911 }
912
913 ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
914 buf, buf_size);
915 avctx->frame_number++;
916 }else{
917 ret= 0;
918 *frame_size_ptr=0;
919 }
920 return ret;
921 }
922
923 #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
924 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
925 int *frame_size_ptr,
926 uint8_t *buf, int buf_size){
927 *frame_size_ptr= AVCODEC_MAX_AUDIO_FRAME_SIZE;
928 return avcodec_decode_audio2(avctx, samples, frame_size_ptr, buf, buf_size);
929 }
930 #endif
931
932 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
933 int *got_sub_ptr,
934 const uint8_t *buf, int buf_size)
935 {
936 int ret;
937
938 *got_sub_ptr = 0;
939 ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
940 (uint8_t *)buf, buf_size);
941 if (*got_sub_ptr)
942 avctx->frame_number++;
943 return ret;
944 }
945
946 int avcodec_close(AVCodecContext *avctx)
947 {
948 entangled_thread_counter++;
949 if(entangled_thread_counter != 1){
950 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
951 entangled_thread_counter--;
952 return -1;
953 }
954
955 if (avctx->codec->close)
956 avctx->codec->close(avctx);
957 avcodec_default_free_buffers(avctx);
958 av_freep(&avctx->priv_data);
959 avctx->codec = NULL;
960 entangled_thread_counter--;
961 return 0;
962 }
963
964 AVCodec *avcodec_find_encoder(enum CodecID id)
965 {
966 AVCodec *p;
967 p = first_avcodec;
968 while (p) {
969 if (p->encode != NULL && p->id == id)
970 return p;
971 p = p->next;
972 }
973 return NULL;
974 }
975
976 AVCodec *avcodec_find_encoder_by_name(const char *name)
977 {
978 AVCodec *p;
979 p = first_avcodec;
980 while (p) {
981 if (p->encode != NULL && strcmp(name,p->name) == 0)
982 return p;
983 p = p->next;
984 }
985 return NULL;
986 }
987
988 AVCodec *avcodec_find_decoder(enum CodecID id)
989 {
990 AVCodec *p;
991 p = first_avcodec;
992 while (p) {
993 if (p->decode != NULL && p->id == id)
994 return p;
995 p = p->next;
996 }
997 return NULL;
998 }
999
1000 AVCodec *avcodec_find_decoder_by_name(const char *name)
1001 {
1002 AVCodec *p;
1003 p = first_avcodec;
1004 while (p) {
1005 if (p->decode != NULL && strcmp(name,p->name) == 0)
1006 return p;
1007 p = p->next;
1008 }
1009 return NULL;
1010 }
1011
1012 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1013 {
1014 const char *codec_name;
1015 AVCodec *p;
1016 char buf1[32];
1017 char channels_str[100];
1018 int bitrate;
1019
1020 if (encode)
1021 p = avcodec_find_encoder(enc->codec_id);
1022 else
1023 p = avcodec_find_decoder(enc->codec_id);
1024
1025 if (p) {
1026 codec_name = p->name;
1027 if (!encode && enc->codec_id == CODEC_ID_MP3) {
1028 if (enc->sub_id == 2)
1029 codec_name = "mp2";
1030 else if (enc->sub_id == 1)
1031 codec_name = "mp1";
1032 }
1033 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1034 /* fake mpeg2 transport stream codec (currently not
1035 registered) */
1036 codec_name = "mpeg2ts";
1037 } else if (enc->codec_name[0] != '\0') {
1038 codec_name = enc->codec_name;
1039 } else {
1040 /* output avi tags */
1041 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
1042 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
1043 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
1044 enc->codec_tag & 0xff,
1045 (enc->codec_tag >> 8) & 0xff,
1046 (enc->codec_tag >> 16) & 0xff,
1047 (enc->codec_tag >> 24) & 0xff,
1048 enc->codec_tag);
1049 } else {
1050 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
1051 }
1052 codec_name = buf1;
1053 }
1054
1055 switch(enc->codec_type) {
1056 case CODEC_TYPE_VIDEO:
1057 snprintf(buf, buf_size,
1058 "Video: %s%s",
1059 codec_name, enc->mb_decision ? " (hq)" : "");
1060 if (enc->pix_fmt != PIX_FMT_NONE) {
1061 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1062 ", %s",
1063 avcodec_get_pix_fmt_name(enc->pix_fmt));
1064 }
1065 if (enc->width) {
1066 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1067 ", %dx%d",
1068 enc->width, enc->height);
1069 if(av_log_level >= AV_LOG_DEBUG){
1070 int g= ff_gcd(enc->time_base.num, enc->time_base.den);
1071 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1072 ", %d/%d",
1073 enc->time_base.num/g, enc->time_base.den/g);
1074 }
1075 }
1076 if (encode) {
1077 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1078 ", q=%d-%d", enc->qmin, enc->qmax);
1079 }
1080 bitrate = enc->bit_rate;
1081 break;
1082 case CODEC_TYPE_AUDIO:
1083 snprintf(buf, buf_size,
1084 "Audio: %s",
1085 codec_name);
1086 switch (enc->channels) {
1087 case 1:
1088 strcpy(channels_str, "mono");
1089 break;
1090 case 2:
1091 strcpy(channels_str, "stereo");
1092 break;
1093 case 6:
1094 strcpy(channels_str, "5:1");
1095 break;
1096 default:
1097 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);
1098 break;
1099 }
1100 if (enc->sample_rate) {
1101 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1102 ", %d Hz, %s",
1103 enc->sample_rate,
1104 channels_str);
1105 }
1106
1107 /* for PCM codecs, compute bitrate directly */
1108 switch(enc->codec_id) {
1109 case CODEC_ID_PCM_S32LE:
1110 case CODEC_ID_PCM_S32BE:
1111 case CODEC_ID_PCM_U32LE:
1112 case CODEC_ID_PCM_U32BE:
1113 bitrate = enc->sample_rate * enc->channels * 32;
1114 break;
1115 case CODEC_ID_PCM_S24LE:
1116 case CODEC_ID_PCM_S24BE:
1117 case CODEC_ID_PCM_U24LE:
1118 case CODEC_ID_PCM_U24BE:
1119 case CODEC_ID_PCM_S24DAUD:
1120 bitrate = enc->sample_rate * enc->channels * 24;
1121 break;
1122 case CODEC_ID_PCM_S16LE:
1123 case CODEC_ID_PCM_S16BE:
1124 case CODEC_ID_PCM_U16LE:
1125 case CODEC_ID_PCM_U16BE:
1126 bitrate = enc->sample_rate * enc->channels * 16;
1127 break;
1128 case CODEC_ID_PCM_S8:
1129 case CODEC_ID_PCM_U8:
1130 case CODEC_ID_PCM_ALAW:
1131 case CODEC_ID_PCM_MULAW:
1132 bitrate = enc->sample_rate * enc->channels * 8;
1133 break;
1134 default:
1135 bitrate = enc->bit_rate;
1136 break;
1137 }
1138 break;
1139 case CODEC_TYPE_DATA:
1140 snprintf(buf, buf_size, "Data: %s", codec_name);
1141 bitrate = enc->bit_rate;
1142 break;
1143 case CODEC_TYPE_SUBTITLE:
1144 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1145 bitrate = enc->bit_rate;
1146 break;
1147 default:
1148 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1149 return;
1150 }
1151 if (encode) {
1152 if (enc->flags & CODEC_FLAG_PASS1)
1153 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1154 ", pass 1");
1155 if (enc->flags & CODEC_FLAG_PASS2)
1156 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1157 ", pass 2");
1158 }
1159 if (bitrate != 0) {
1160 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1161 ", %d kb/s", bitrate / 1000);
1162 }
1163 }
1164
1165 unsigned avcodec_version( void )
1166 {
1167 return LIBAVCODEC_VERSION_INT;
1168 }
1169
1170 unsigned avcodec_build( void )
1171 {
1172 return LIBAVCODEC_BUILD;
1173 }
1174
1175 static void init_crcs(void){
1176 av_crc04C11DB7= av_mallocz_static(sizeof(AVCRC) * 257);
1177 av_crc8005 = av_mallocz_static(sizeof(AVCRC) * 257);
1178 av_crc07 = av_mallocz_static(sizeof(AVCRC) * 257);
1179 av_crc_init(av_crc04C11DB7, 0, 32, 0x04c11db7, sizeof(AVCRC)*257);
1180 av_crc_init(av_crc8005 , 0, 16, 0x8005 , sizeof(AVCRC)*257);
1181 av_crc_init(av_crc07 , 0, 8, 0x07 , sizeof(AVCRC)*257);
1182 }
1183
1184 void avcodec_init(void)
1185 {
1186 static int inited = 0;
1187
1188 if (inited != 0)
1189 return;
1190 inited = 1;
1191
1192 dsputil_static_init();
1193 init_crcs();
1194 }
1195
1196 void avcodec_flush_buffers(AVCodecContext *avctx)
1197 {
1198 if(avctx->codec->flush)
1199 avctx->codec->flush(avctx);
1200 }
1201
1202 void avcodec_default_free_buffers(AVCodecContext *s){
1203 int i, j;
1204
1205 if(s->internal_buffer==NULL) return;
1206
1207 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1208 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1209 for(j=0; j<4; j++){
1210 av_freep(&buf->base[j]);
1211 buf->data[j]= NULL;
1212 }
1213 }
1214 av_freep(&s->internal_buffer);
1215
1216 s->internal_buffer_count=0;
1217 }
1218
1219 char av_get_pict_type_char(int pict_type){
1220 switch(pict_type){
1221 case I_TYPE: return 'I';
1222 case P_TYPE: return 'P';
1223 case B_TYPE: return 'B';
1224 case S_TYPE: return 'S';
1225 case SI_TYPE:return 'i';
1226 case SP_TYPE:return 'p';
1227 default: return '?';
1228 }
1229 }
1230
1231 int av_get_bits_per_sample(enum CodecID codec_id){
1232 switch(codec_id){
1233 case CODEC_ID_ADPCM_SBPRO_2:
1234 return 2;
1235 case CODEC_ID_ADPCM_SBPRO_3:
1236 return 3;
1237 case CODEC_ID_ADPCM_SBPRO_4:
1238 case CODEC_ID_ADPCM_CT:
1239 return 4;
1240 case CODEC_ID_PCM_ALAW:
1241 case CODEC_ID_PCM_MULAW:
1242 case CODEC_ID_PCM_S8:
1243 case CODEC_ID_PCM_U8:
1244 return 8;
1245 case CODEC_ID_PCM_S16BE:
1246 case CODEC_ID_PCM_S16LE:
1247 case CODEC_ID_PCM_U16BE:
1248 case CODEC_ID_PCM_U16LE:
1249 return 16;
1250 case CODEC_ID_PCM_S24DAUD:
1251 case CODEC_ID_PCM_S24BE:
1252 case CODEC_ID_PCM_S24LE:
1253 case CODEC_ID_PCM_U24BE:
1254 case CODEC_ID_PCM_U24LE:
1255 return 24;
1256 case CODEC_ID_PCM_S32BE:
1257 case CODEC_ID_PCM_S32LE:
1258 case CODEC_ID_PCM_U32BE:
1259 case CODEC_ID_PCM_U32LE:
1260 return 32;
1261 default:
1262 return 0;
1263 }
1264 }
1265
1266 #if !defined(HAVE_THREADS)
1267 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1268 return -1;
1269 }
1270 #endif
1271
1272 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1273 {
1274 unsigned int n = 0;
1275
1276 while(v >= 0xff) {
1277 *s++ = 0xff;
1278 v -= 0xff;
1279 n++;
1280 }
1281 *s = v;
1282 n++;
1283 return n;
1284 }
1285
1286 /* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1287 * Also, tries to create file in /tmp first, if possible.
1288 * *prefix can be a character constant; *filename will be allocated internally.
1289 * Returns file descriptor of opened file (or -1 on error)
1290 * and opened file name in **filename. */
1291 int av_tempfile(char *prefix, char **filename) {
1292 int fd=-1;
1293 #ifdef __MINGW32__
1294 *filename = tempnam(".", prefix);
1295 #else
1296 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1297 *filename = av_malloc(len);
1298 #endif
1299 /* -----common section-----*/
1300 if (*filename == NULL) {
1301 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1302 return -1;
1303 }
1304 #ifdef __MINGW32__
1305 fd = open(*filename, _O_RDWR | _O_BINARY | _O_CREAT, 0444);
1306 #else
1307 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1308 fd = mkstemp(*filename);
1309 if (fd < 0) {
1310 snprintf(*filename, len, "./%sXXXXXX", prefix);
1311 fd = mkstemp(*filename);
1312 }
1313 #endif
1314 /* -----common section-----*/
1315 if (fd < 0) {
1316 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1317 return -1;
1318 }
1319 return fd; /* success */
1320 }