d3410ad3334d36ed7a907f7d4f34044ff27566cc
[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 library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 /**
22 * @file utils.c
23 * utils.
24 */
25
26 #include "avcodec.h"
27 #include "dsputil.h"
28 #include "mpegvideo.h"
29 #include "integer.h"
30 #include "opt.h"
31 #include "crc.h"
32 #include <stdarg.h>
33 #include <limits.h>
34 #include <float.h>
35 #ifdef __MINGW32__
36 #include <fcntl.h>
37 #endif
38
39 const uint8_t ff_reverse[256]={
40 0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
41 0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
42 0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
43 0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
44 0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
45 0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
46 0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
47 0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
48 0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
49 0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
50 0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
51 0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
52 0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
53 0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
54 0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
55 0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
56 };
57
58 static int volatile entangled_thread_counter=0;
59
60 /**
61 * realloc which does nothing if the block is large enough
62 */
63 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
64 {
65 if(min_size < *size)
66 return ptr;
67
68 *size= FFMAX(17*min_size/16 + 32, min_size);
69
70 return av_realloc(ptr, *size);
71 }
72
73 static unsigned int last_static = 0;
74 static unsigned int allocated_static = 0;
75 static void** array_static = NULL;
76
77 /**
78 * allocation of static arrays - do not use for normal allocation.
79 */
80 void *av_mallocz_static(unsigned int size)
81 {
82 void *ptr = av_mallocz(size);
83
84 if(ptr){
85 array_static =av_fast_realloc(array_static, &allocated_static, sizeof(void*)*(last_static+1));
86 if(!array_static)
87 return NULL;
88 array_static[last_static++] = ptr;
89 }
90
91 return ptr;
92 }
93
94 /**
95 * same as above, but does realloc
96 */
97
98 void *av_realloc_static(void *ptr, unsigned int size)
99 {
100 int i;
101 if(!ptr)
102 return av_mallocz_static(size);
103 /* Look for the old ptr */
104 for(i = 0; i < last_static; i++) {
105 if(array_static[i] == ptr) {
106 array_static[i] = av_realloc(array_static[i], size);
107 return array_static[i];
108 }
109 }
110 return NULL;
111
112 }
113
114 /**
115 * free all static arrays and reset pointers to 0.
116 */
117 void av_free_static(void)
118 {
119 while(last_static){
120 av_freep(&array_static[--last_static]);
121 }
122 av_freep(&array_static);
123 }
124
125 /**
126 * Call av_free_static automatically before it's too late
127 */
128
129 static void do_free(void) __attribute__ ((destructor));
130
131 static void do_free(void)
132 {
133 av_free_static();
134 }
135
136
137 /* encoder management */
138 AVCodec *first_avcodec = NULL;
139
140 void register_avcodec(AVCodec *format)
141 {
142 AVCodec **p;
143 p = &first_avcodec;
144 while (*p != NULL) p = &(*p)->next;
145 *p = format;
146 format->next = NULL;
147 }
148
149 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
150 s->coded_width = width;
151 s->coded_height= height;
152 s->width = -((-width )>>s->lowres);
153 s->height= -((-height)>>s->lowres);
154 }
155
156 typedef struct InternalBuffer{
157 int last_pic_num;
158 uint8_t *base[4];
159 uint8_t *data[4];
160 int linesize[4];
161 }InternalBuffer;
162
163 #define INTERNAL_BUFFER_SIZE 32
164
165 #define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
166
167 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
168 int w_align= 1;
169 int h_align= 1;
170
171 switch(s->pix_fmt){
172 case PIX_FMT_YUV420P:
173 case PIX_FMT_YUV422:
174 case PIX_FMT_UYVY422:
175 case PIX_FMT_YUV422P:
176 case PIX_FMT_YUV444P:
177 case PIX_FMT_GRAY8:
178 case PIX_FMT_YUVJ420P:
179 case PIX_FMT_YUVJ422P:
180 case PIX_FMT_YUVJ444P:
181 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
182 h_align= 16;
183 break;
184 case PIX_FMT_YUV411P:
185 case PIX_FMT_UYVY411:
186 w_align=32;
187 h_align=8;
188 break;
189 case PIX_FMT_YUV410P:
190 if(s->codec_id == CODEC_ID_SVQ1){
191 w_align=64;
192 h_align=64;
193 }
194 case PIX_FMT_RGB555:
195 if(s->codec_id == CODEC_ID_RPZA){
196 w_align=4;
197 h_align=4;
198 }
199 case PIX_FMT_PAL8:
200 if(s->codec_id == CODEC_ID_SMC){
201 w_align=4;
202 h_align=4;
203 }
204 break;
205 case PIX_FMT_BGR24:
206 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
207 w_align=4;
208 h_align=4;
209 }
210 break;
211 default:
212 w_align= 1;
213 h_align= 1;
214 break;
215 }
216
217 *width = ALIGN(*width , w_align);
218 *height= ALIGN(*height, h_align);
219 }
220
221 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
222 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
223 return 0;
224
225 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
226 return -1;
227 }
228
229 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
230 int i;
231 int w= s->width;
232 int h= s->height;
233 InternalBuffer *buf;
234 int *picture_number;
235
236 assert(pic->data[0]==NULL);
237 assert(INTERNAL_BUFFER_SIZE > s->internal_buffer_count);
238
239 if(avcodec_check_dimensions(s,w,h))
240 return -1;
241
242 if(s->internal_buffer==NULL){
243 s->internal_buffer= av_mallocz(INTERNAL_BUFFER_SIZE*sizeof(InternalBuffer));
244 }
245 #if 0
246 s->internal_buffer= av_fast_realloc(
247 s->internal_buffer,
248 &s->internal_buffer_size,
249 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
250 );
251 #endif
252
253 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
254 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE-1]).last_pic_num; //FIXME ugly hack
255 (*picture_number)++;
256
257 if(buf->base[0]){
258 pic->age= *picture_number - buf->last_pic_num;
259 buf->last_pic_num= *picture_number;
260 }else{
261 int h_chroma_shift, v_chroma_shift;
262 int pixel_size, size[3];
263 AVPicture picture;
264
265 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
266
267 avcodec_align_dimensions(s, &w, &h);
268
269 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
270 w+= EDGE_WIDTH*2;
271 h+= EDGE_WIDTH*2;
272 }
273 avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
274 pixel_size= picture.linesize[0]*8 / w;
275 //av_log(NULL, AV_LOG_ERROR, "%d %d %d %d\n", (int)picture.data[1], w, h, s->pix_fmt);
276 assert(pixel_size>=1);
277 //FIXME next ensures that linesize= 2^x uvlinesize, thats needed because some MC code assumes it
278 if(pixel_size == 3*8)
279 w= ALIGN(w, STRIDE_ALIGN<<h_chroma_shift);
280 else
281 w= ALIGN(pixel_size*w, STRIDE_ALIGN<<(h_chroma_shift+3)) / pixel_size;
282 size[1] = avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
283 size[0] = picture.linesize[0] * h;
284 size[1] -= size[0];
285 if(picture.data[2])
286 size[1]= size[2]= size[1]/2;
287 else
288 size[2]= 0;
289
290 buf->last_pic_num= -256*256*256*64;
291 memset(buf->base, 0, sizeof(buf->base));
292 memset(buf->data, 0, sizeof(buf->data));
293
294 for(i=0; i<3 && size[i]; i++){
295 const int h_shift= i==0 ? 0 : h_chroma_shift;
296 const int v_shift= i==0 ? 0 : v_chroma_shift;
297
298 buf->linesize[i]= picture.linesize[i];
299
300 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
301 if(buf->base[i]==NULL) return -1;
302 memset(buf->base[i], 128, size[i]);
303
304 // no edge if EDEG EMU or not planar YUV, we check for PAL8 redundantly to protect against a exploitable bug regression ...
305 if((s->flags&CODEC_FLAG_EMU_EDGE) || (s->pix_fmt == PIX_FMT_PAL8) || !size[2])
306 buf->data[i] = buf->base[i];
307 else
308 buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);
309 }
310 pic->age= 256*256*256*64;
311 }
312 pic->type= FF_BUFFER_TYPE_INTERNAL;
313
314 for(i=0; i<4; i++){
315 pic->base[i]= buf->base[i];
316 pic->data[i]= buf->data[i];
317 pic->linesize[i]= buf->linesize[i];
318 }
319 s->internal_buffer_count++;
320
321 return 0;
322 }
323
324 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
325 int i;
326 InternalBuffer *buf, *last, temp;
327
328 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
329 assert(s->internal_buffer_count);
330
331 buf = NULL; /* avoids warning */
332 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
333 buf= &((InternalBuffer*)s->internal_buffer)[i];
334 if(buf->data[0] == pic->data[0])
335 break;
336 }
337 assert(i < s->internal_buffer_count);
338 s->internal_buffer_count--;
339 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
340
341 temp= *buf;
342 *buf= *last;
343 *last= temp;
344
345 for(i=0; i<3; i++){
346 pic->data[i]=NULL;
347 // pic->base[i]=NULL;
348 }
349 //printf("R%X\n", pic->opaque);
350 }
351
352 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
353 AVFrame temp_pic;
354 int i;
355
356 /* If no picture return a new buffer */
357 if(pic->data[0] == NULL) {
358 /* We will copy from buffer, so must be readable */
359 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
360 return s->get_buffer(s, pic);
361 }
362
363 /* If internal buffer type return the same buffer */
364 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
365 return 0;
366
367 /*
368 * Not internal type and reget_buffer not overridden, emulate cr buffer
369 */
370 temp_pic = *pic;
371 for(i = 0; i < 4; i++)
372 pic->data[i] = pic->base[i] = NULL;
373 pic->opaque = NULL;
374 /* Allocate new frame */
375 if (s->get_buffer(s, pic))
376 return -1;
377 /* Copy image data from old buffer to new buffer */
378 img_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
379 s->height);
380 s->release_buffer(s, &temp_pic); // Release old frame
381 return 0;
382 }
383
384 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){
385 int i;
386
387 for(i=0; i<count; i++){
388 int r= func(c, arg[i]);
389 if(ret) ret[i]= r;
390 }
391 return 0;
392 }
393
394 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
395 return fmt[0];
396 }
397
398 static const char* context_to_name(void* ptr) {
399 AVCodecContext *avc= ptr;
400
401 if(avc && avc->codec && avc->codec->name)
402 return avc->codec->name;
403 else
404 return "NULL";
405 }
406
407 #define OFFSET(x) offsetof(AVCodecContext,x)
408 #define DEFAULT 0 //should be NAN but it doesnt work as its not a constant in glibc as required by ANSI/ISO C
409 //these names are too long to be readable
410 #define V AV_OPT_FLAG_VIDEO_PARAM
411 #define A AV_OPT_FLAG_AUDIO_PARAM
412 #define S AV_OPT_FLAG_SUBTITLE_PARAM
413 #define E AV_OPT_FLAG_ENCODING_PARAM
414 #define D AV_OPT_FLAG_DECODING_PARAM
415
416 #define AV_CODEC_DEFAULT_BITRATE 200*1000
417
418 static const AVOption options[]={
419 {"b", "set video bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, AV_CODEC_DEFAULT_BITRATE, INT_MIN, INT_MAX, V|A|E},
420 {"bt", "set video bitrate tolerance (in bits/s)", OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, AV_CODEC_DEFAULT_BITRATE*20, INT_MIN, INT_MAX, V|E},
421 {"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|A|E|D, "flags"},
422 {"mv4", "use four motion vector by macroblock (mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_4MV, INT_MIN, INT_MAX, V|E, "flags"},
423 {"obmc", "use overlapped block motion compensation (h263+)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_OBMC, INT_MIN, INT_MAX, V|E, "flags"},
424 {"qpel", "use 1/4 pel motion compensation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QPEL, INT_MIN, INT_MAX, V|E, "flags"},
425 {"loop", "use loop filter", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOOP_FILTER, INT_MIN, INT_MAX, V|E, "flags"},
426 {"qscale", "use fixed qscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QSCALE, INT_MIN, INT_MAX, 0, "flags"},
427 {"gmc", "use gmc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GMC, INT_MIN, INT_MAX, V|E, "flags"},
428 {"mv0", "always try a mb with mv=<0,0>", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_MV0, INT_MIN, INT_MAX, V|E, "flags"},
429 {"part", "use data partitioning", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PART, INT_MIN, INT_MAX, V|E, "flags"},
430 {"input_preserved", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INPUT_PRESERVED, INT_MIN, INT_MAX, 0, "flags"},
431 {"pass1", "use internal 2pass ratecontrol in first pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS1, INT_MIN, INT_MAX, 0, "flags"},
432 {"pass2", "use internal 2pass ratecontrol in second pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS2, INT_MIN, INT_MAX, 0, "flags"},
433 {"extern_huff", "use external huffman table (for mjpeg)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EXTERN_HUFF, INT_MIN, INT_MAX, 0, "flags"},
434 {"gray", "only decode/encode grayscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GRAY, INT_MIN, INT_MAX, V|E|D, "flags"},
435 {"emu_edge", "don't draw edges", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EMU_EDGE, INT_MIN, INT_MAX, 0, "flags"},
436 {"psnr", "error[?] variables will be set during encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PSNR, INT_MIN, INT_MAX, V|E, "flags"},
437 {"truncated", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRUNCATED, INT_MIN, INT_MAX, 0, "flags"},
438 {"naq", "normalize adaptive quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_NORMALIZE_AQP, INT_MIN, INT_MAX, V|E, "flags"},
439 {"ildct", "use interlaced dct", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_DCT, INT_MIN, INT_MAX, V|E, "flags"},
440 {"low_delay", "force low delay", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOW_DELAY, INT_MIN, INT_MAX, V|D, "flags"},
441 {"alt", "enable alternate scantable (mpeg2/mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_ALT_SCAN, INT_MIN, INT_MAX, V|E, "flags"},
442 {"trell", "use trellis quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRELLIS_QUANT, INT_MIN, INT_MAX, V|E, "flags"},
443 {"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"},
444 {"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"},
445 {"aic", "h263 advanced intra coding / mpeg4 ac prediction", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_AC_PRED, INT_MIN, INT_MAX, V|E, "flags"},
446 {"umv", "use unlimited motion vectors", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_UMV, INT_MIN, INT_MAX, V|E, "flags"},
447 {"cbp", "use rate distortion optimization for cbp", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CBP_RD, INT_MIN, INT_MAX, V|E, "flags"},
448 {"qprd", "use rate distortion optimization for qp selection", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QP_RD, INT_MIN, INT_MAX, V|E, "flags"},
449 {"aiv", "h263 alternative inter vlc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_AIV, INT_MIN, INT_MAX, V|E, "flags"},
450 {"slice", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_SLICE_STRUCT, INT_MIN, INT_MAX, V|E, "flags"},
451 {"ilme", "interlaced motion estimation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_ME, INT_MIN, INT_MAX, V|E, "flags"},
452 {"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"},
453 {"cgop", "closed gop", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CLOSED_GOP, INT_MIN, INT_MAX, V|E, "flags"},
454 {"fast", "allow non spec compliant speedup tricks", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FAST, INT_MIN, INT_MAX, V|E, "flags2"},
455 {"sgop", "strictly enforce gop size", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_STRICT_GOP, INT_MIN, INT_MAX, V|E, "flags2"},
456 {"noout", "skip bitstream encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NO_OUTPUT, INT_MIN, INT_MAX, V|E, "flags2"},
457 {"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"},
458 {"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
459 {"me_method", "set motion estimation method", OFFSET(me_method), FF_OPT_TYPE_INT, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method"},
460 {"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
461 {"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
462 {"g", "set the group of picture size", OFFSET(gop_size), FF_OPT_TYPE_INT, 12, INT_MIN, INT_MAX, V|E},
463 {"rate_emu", NULL, OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
464 {"ar", "set audio sampling rate (in Hz)", OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
465 {"ac", "set number of audio channels", OFFSET(channels), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX},
466 {"cutoff", "set cutoff bandwidth", OFFSET(cutoff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
467 {"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
468 {"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
469 {"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
470 {"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
471 {"qcomp", "video quantiser scale compression (VBR)", OFFSET(qcompress), FF_OPT_TYPE_FLOAT, 0.5, FLT_MIN, FLT_MAX, V|E},
472 {"qblur", "video quantiser scale blur (VBR)", OFFSET(qblur), FF_OPT_TYPE_FLOAT, 0.5, FLT_MIN, FLT_MAX, V|E},
473 {"qmin", "min video quantiser scale (VBR)", OFFSET(qmin), FF_OPT_TYPE_INT, 2, 1, 51, V|E},
474 {"qmax", "max video quantiser scale (VBR)", OFFSET(qmax), FF_OPT_TYPE_INT, 31, 1, 51, V|E},
475 {"qdiff", "max difference between the quantiser scale (VBR)", OFFSET(max_qdiff), FF_OPT_TYPE_INT, 3, INT_MIN, INT_MAX, V|E},
476 {"bf", "use 'frames' B frames", OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, 0, FF_MAX_B_FRAMES, V|E},
477 {"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},
478 {"rc_strategy", NULL, OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
479 {"b_strategy", NULL, OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},
480 {"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
481 {"rtp_mode", NULL, OFFSET(rtp_mode), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
482 {"rtp_payload_size", NULL, OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
483 {"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
484 {"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
485 {"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
486 {"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
487 {"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
488 {"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
489 {"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
490 {"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
491 {"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
492 {"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
493 {"bug", "workaround not auto detected encoder bugs", OFFSET(workaround_bugs), FF_OPT_TYPE_FLAGS, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
494 {"autodetect", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
495 {"old_msmpeg4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_OLD_MSMPEG4, INT_MIN, INT_MAX, V|D, "bug"},
496 {"xvid_ilace", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_XVID_ILACE, INT_MIN, INT_MAX, V|D, "bug"},
497 {"ump4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_UMP4, INT_MIN, INT_MAX, V|D, "bug"},
498 {"no_padding", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_NO_PADDING, INT_MIN, INT_MAX, V|D, "bug"},
499 {"amv", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AMV, INT_MIN, INT_MAX, V|D, "bug"},
500 {"ac_vlc", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AC_VLC, INT_MIN, INT_MAX, V|D, "bug"},
501 {"qpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
502 {"std_qpel", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_STD_QPEL, INT_MIN, INT_MAX, V|D, "bug"},
503 {"qpel_chroma2", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA2, INT_MIN, INT_MAX, V|D, "bug"},
504 {"direct_blocksize", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DIRECT_BLOCKSIZE, INT_MIN, INT_MAX, V|D, "bug"},
505 {"edge", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_EDGE, INT_MIN, INT_MAX, V|D, "bug"},
506 {"hpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_HPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
507 {"dc_clip", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DC_CLIP, INT_MIN, INT_MAX, V|D, "bug"},
508 {"ms", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_MS, INT_MIN, INT_MAX, V|D, "bug"},
509 {"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},
510 {"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},
511 {"strict", "how strictly to follow the standards", OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "strict"},
512 {"very", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_VERY_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
513 {"strict", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
514 {"normal", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_NORMAL, INT_MIN, INT_MAX, V|E, "strict"},
515 {"inofficial", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_INOFFICIAL, INT_MIN, INT_MAX, V|E, "strict"},
516 {"experimental", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|E, "strict"},
517 {"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},
518 {"er", NULL, OFFSET(error_resilience), FF_OPT_TYPE_INT, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
519 {"careful", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
520 {"compliant", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_COMPLIANT, INT_MIN, INT_MAX, V|D, "er"},
521 {"aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
522 {"very_aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_VERY_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
523 {"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
524 {"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
525 {"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
526 {"mpeg_quant", NULL, OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
527 {"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
528 {"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
529 {"qsquish", "how to keep quantiser between qmin and qmax (0 = clip, 1 = use differentiable function)", OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, 0, 99, V|E},
530 {"rc_qmod_amp", NULL, OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
531 {"rc_qmod_freq", NULL, OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
532 {"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
533 {"rc_eq", "set rate control equation", OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX, V|E},
534 {"maxrate", "set max video bitrate tolerance (in bits/s)", OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
535 {"minrate", "set min video bitrate tolerance (in bits/s)", OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
536 {"bufsize", "set ratecontrol buffer size (in bits)", OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
537 {"rc_buf_aggressivity", NULL, OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, 1.0, FLT_MIN, FLT_MAX, V|E},
538 {"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},
539 {"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},
540 {"rc_init_cplx", "initial complexity for 1-pass encoding", OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
541 {"dct", NULL, OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E, "dct"},
542 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_AUTO, INT_MIN, INT_MAX, V|E, "dct"},
543 {"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FASTINT, INT_MIN, INT_MAX, V|E, "dct"},
544 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_INT, INT_MIN, INT_MAX, V|E, "dct"},
545 {"mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MMX, INT_MIN, INT_MAX, V|E, "dct"},
546 {"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MLIB, INT_MIN, INT_MAX, V|E, "dct"},
547 {"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_ALTIVEC, INT_MIN, INT_MAX, V|E, "dct"},
548 {"faan", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FAAN, INT_MIN, INT_MAX, V|E, "dct"},
549 {"lumi_mask", "lumimasking", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
550 {"tcplx_mask", "temporal complexity masking", OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
551 {"scplx_mask", "spatial complexity masking", OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
552 {"p_mask", "inter masking", OFFSET(p_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
553 {"dark_mask", "darkness masking", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
554 {"unused", NULL, OFFSET(unused), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
555 {"idct", NULL, OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E|D, "idct"},
556 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_AUTO, INT_MIN, INT_MAX, V|E|D, "idct"},
557 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_INT, INT_MIN, INT_MAX, V|E|D, "idct"},
558 {"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLE, INT_MIN, INT_MAX, V|E|D, "idct"},
559 {"simplemmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
560 {"libmpeg2mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_LIBMPEG2MMX, INT_MIN, INT_MAX, V|E|D, "idct"},
561 {"ps2", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_PS2, INT_MIN, INT_MAX, V|E|D, "idct"},
562 {"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_MLIB, INT_MIN, INT_MAX, V|E|D, "idct"},
563 {"arm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ARM, INT_MIN, INT_MAX, V|E|D, "idct"},
564 {"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ALTIVEC, INT_MIN, INT_MAX, V|E|D, "idct"},
565 {"sh4", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SH4, INT_MIN, INT_MAX, V|E|D, "idct"},
566 {"simplearm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARM, INT_MIN, INT_MAX, V|E|D, "idct"},
567 {"h264", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_H264, INT_MIN, INT_MAX, V|E|D, "idct"},
568 {"vp3", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_VP3, INT_MIN, INT_MAX, V|E|D, "idct"},
569 {"ipp", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_IPP, INT_MIN, INT_MAX, V|E|D, "idct"},
570 {"xvidmmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_XVIDMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
571 {"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
572 {"ec", NULL, OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, 3, INT_MIN, INT_MAX, V|D, "ec"},
573 {"guess_mvs", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_GUESS_MVS, INT_MIN, INT_MAX, V|D, "ec"},
574 {"deblock", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_DEBLOCK, INT_MIN, INT_MAX, V|D, "ec"},
575 {"bits_per_sample", NULL, OFFSET(bits_per_sample), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
576 {"pred", "prediction method", OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "pred"},
577 {"left", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_LEFT, INT_MIN, INT_MAX, V|E, "pred"},
578 {"plane", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_PLANE, INT_MIN, INT_MAX, V|E, "pred"},
579 {"median", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_MEDIAN, INT_MIN, INT_MAX, V|E, "pred"},
580 {"aspect", NULL, OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, 0, 10, V|E},
581 {"debug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, DEFAULT, 0, INT_MAX, V|A|S|E|D, "debug"},
582 {"pict", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PICT_INFO, INT_MIN, INT_MAX, V|D, "debug"},
583 {"rc", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_RC, INT_MIN, INT_MAX, V|E, "debug"},
584 {"bitstream", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BITSTREAM, INT_MIN, INT_MAX, V|D, "debug"},
585 {"mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
586 {"qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_QP, INT_MIN, INT_MAX, V|D, "debug"},
587 {"mv", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MV, INT_MIN, INT_MAX, V|D, "debug"},
588 {"dct_coeff", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_DCT_COEFF, INT_MIN, INT_MAX, V|D, "debug"},
589 {"skip", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_SKIP, INT_MIN, INT_MAX, V|D, "debug"},
590 {"startcode", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_STARTCODE, INT_MIN, INT_MAX, V|D, "debug"},
591 {"pts", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PTS, INT_MIN, INT_MAX, V|D, "debug"},
592 {"er", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_ER, INT_MIN, INT_MAX, V|D, "debug"},
593 {"mmco", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MMCO, INT_MIN, INT_MAX, V|D, "debug"},
594 {"bugs", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BUGS, INT_MIN, INT_MAX, V|D, "debug"},
595 {"vis_qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_QP, INT_MIN, INT_MAX, V|D, "debug"},
596 {"vis_mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
597 {"vismv", "visualize motion vectors", OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|D, "debug_mv"},
598 {"pf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_P_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
599 {"bf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
600 {"bb", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_BACK, INT_MIN, INT_MAX, V|D, "debug_mv"},
601 {"mb_qmin", NULL, OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
602 {"mb_qmax", NULL, OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
603 {"cmp", "full pel me compare function", OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
604 {"subcmp", "sub pel me compare function", OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
605 {"mbcmp", "macroblock compare function", OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
606 {"ildctcmp", "interlaced dct compare function", OFFSET(ildct_cmp), FF_OPT_TYPE_INT, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
607 {"dia_size", NULL, OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
608 {"last_pred", NULL, OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
609 {"preme", "pre motion estimation", OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
610 {"precmp", "pre motion estimation compare function", OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
611 {"sad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
612 {"sse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
613 {"satd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SATD, INT_MIN, INT_MAX, V|E, "cmp_func"},
614 {"dct", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCT, INT_MIN, INT_MAX, V|E, "cmp_func"},
615 {"psnr", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_PSNR, INT_MIN, INT_MAX, V|E, "cmp_func"},
616 {"bit", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_BIT, INT_MIN, INT_MAX, V|E, "cmp_func"},
617 {"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_RD, INT_MIN, INT_MAX, V|E, "cmp_func"},
618 {"zero", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_ZERO, INT_MIN, INT_MAX, V|E, "cmp_func"},
619 {"vsad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
620 {"vsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
621 {"nsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_NSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
622 #ifdef CONFIG_SNOW_ENCODER
623 {"w53", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W53, INT_MIN, INT_MAX, V|E, "cmp_func"},
624 {"w97", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W97, INT_MIN, INT_MAX, V|E, "cmp_func"},
625 #endif
626 {"dctmax", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
627 {"chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_CHROMA, INT_MIN, INT_MAX, V|E, "cmp_func"},
628 {"pre_dia_size", NULL, OFFSET(pre_dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
629 {"subq", "sub pel motion estimation quality", OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
630 {"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
631 {"me_range", "limit motion vectors range (1023 for DivX player)", OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
632 {"ibias", "intra quant bias", OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},
633 {"pbias", "inter quant bias", OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},
634 {"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
635 {"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
636 {"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
637 {"coder", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "coder"},
638 {"vlc", "variable length coder / huffman coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_VLC, INT_MIN, INT_MAX, V|E, "coder"},
639 {"ac", "arithmetic coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_AC, INT_MIN, INT_MAX, V|E, "coder"},
640 {"context", "context model", OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
641 {"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
642 {"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
643 {"mbd", NULL, OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "mbd"},
644 {"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_SIMPLE, INT_MIN, INT_MAX, V|E, "mbd"},
645 {"bits", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_BITS, INT_MIN, INT_MAX, V|E, "mbd"},
646 {"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_RD, INT_MIN, INT_MAX, V|E, "mbd"},
647 {"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
648 {"sc_threshold", "scene change threshold", OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
649 {"lmin", "min lagrange factor (VBR)", OFFSET(lmin), FF_OPT_TYPE_INT, 2*FF_QP2LAMBDA, 0, INT_MAX, V|E},
650 {"lmax", "max lagrange factor (VBR)", OFFSET(lmax), FF_OPT_TYPE_INT, 31*FF_QP2LAMBDA, 0, INT_MAX, V|E},
651 {"nr", "noise reduction", OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
652 {"rc_init_occupancy", NULL, OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
653 {"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
654 {"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_FLAGS, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|A|E|D, "flags2"},
655 {"error", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
656 {"antialias", NULL, OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "aa"},
657 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_AUTO, INT_MIN, INT_MAX, V|D, "aa"},
658 {"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FASTINT, INT_MIN, INT_MAX, V|D, "aa"},
659 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_INT, INT_MIN, INT_MAX, V|D, "aa"},
660 {"float", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FLOAT, INT_MIN, INT_MAX, V|D, "aa"},
661 {"qns", "quantizer noise shaping", OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
662 {"threads", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E|D},
663 {"me_threshold", "motion estimaton threshold", OFFSET(me_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
664 {"mb_threshold", "macroblock threshold", OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
665 {"dc", "intra_dc_precision", OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},
666 {"nssew", "nsse weight", OFFSET(nsse_weight), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
667 {"skip_top", NULL, OFFSET(skip_top), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
668 {"skip_bottom", NULL, OFFSET(skip_bottom), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
669 {"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
670 {"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
671 {"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
672 {"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
673 {"lowres", NULL, OFFSET(lowres), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|D},
674 {"skip_threshold", "frame skip threshold", OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
675 {"skip_factor", "frame skip factor", OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
676 {"skip_exp", "frame skip exponent", OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
677 {"skipcmp", "frame skip compare function", OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
678 {"border_mask", NULL, OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
679 {"mblmin", "min macroblock quantiser scale (VBR)", OFFSET(mb_lmin), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 2, INT_MIN, INT_MAX, V|E},
680 {"mblmax", "max macroblock quantiser scale (VBR)", OFFSET(mb_lmax), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 31, INT_MIN, INT_MAX, V|E},
681 {"mepc", "motion estimation bitrate penalty compensation (1.0 = 256)", OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, 256, INT_MIN, INT_MAX, V|E},
682 {"bidir_refine", NULL, OFFSET(bidir_refine), FF_OPT_TYPE_INT, DEFAULT, 0, 4, V|E},
683 {"brd_scale", NULL, OFFSET(brd_scale), FF_OPT_TYPE_INT, DEFAULT, 0, 10, V|E},
684 {"crf", NULL, OFFSET(crf), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
685 {"cqp", NULL, OFFSET(cqp), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, V|E},
686 {"keyint_min", NULL, OFFSET(keyint_min), FF_OPT_TYPE_INT, 25, INT_MIN, INT_MAX, V|E},
687 {"refs", NULL, OFFSET(refs), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E},
688 {"chromaoffset", NULL, OFFSET(chromaoffset), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
689 {"bframebias", NULL, OFFSET(bframebias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
690 {"trellis", NULL, OFFSET(trellis), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
691 {"directpred", NULL, OFFSET(directpred), FF_OPT_TYPE_INT, 2, INT_MIN, INT_MAX, V|E},
692 {"bpyramid", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BPYRAMID, INT_MIN, INT_MAX, V|E, "flags2"},
693 {"wpred", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_WPRED, INT_MIN, INT_MAX, V|E, "flags2"},
694 {"mixed_refs", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_MIXED_REFS, INT_MIN, INT_MAX, V|E, "flags2"},
695 {"8x8dct", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_8X8DCT, INT_MIN, INT_MAX, V|E, "flags2"},
696 {"fastpskip", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|E, "flags2"},
697 {"aud", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_AUD, INT_MIN, INT_MAX, V|E, "flags2"},
698 {"brdo", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BRDO, INT_MIN, INT_MAX, V|E, "flags2"},
699 {"complexityblur", NULL, OFFSET(complexityblur), FF_OPT_TYPE_FLOAT, 20.0, FLT_MIN, FLT_MAX, V|E},
700 {"deblockalpha", NULL, OFFSET(deblockalpha), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
701 {"deblockbeta", NULL, OFFSET(deblockbeta), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
702 {"partitions", NULL, OFFSET(partitions), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|E, "partitions"},
703 {"parti4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I4X4, INT_MIN, INT_MAX, V|E, "partitions"},
704 {"parti8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I8X8, INT_MIN, INT_MAX, V|E, "partitions"},
705 {"partp4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P4X4, INT_MIN, INT_MAX, V|E, "partitions"},
706 {"partp8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P8X8, INT_MIN, INT_MAX, V|E, "partitions"},
707 {"partb8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_B8X8, INT_MIN, INT_MAX, V|E, "partitions"},
708 {"sc_factor", NULL, OFFSET(scenechange_factor), FF_OPT_TYPE_INT, 6, 0, INT_MAX, V|E},
709 {"mv0_threshold", NULL, OFFSET(mv0_threshold), FF_OPT_TYPE_INT, 256, 0, INT_MAX, V|E},
710 {"ivlc", "intra vlc table", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_INTRA_VLC, INT_MIN, INT_MAX, V|E, "flags2"},
711 {"b_sensitivity", NULL, OFFSET(b_sensitivity), FF_OPT_TYPE_INT, 40, 1, INT_MAX, V|E},
712 {"compression_level", NULL, OFFSET(compression_level), FF_OPT_TYPE_INT, FF_COMPRESSION_DEFAULT, INT_MIN, INT_MAX, V|A|E},
713 {"use_lpc", NULL, OFFSET(use_lpc), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
714 {"lpc_coeff_precision", NULL, OFFSET(lpc_coeff_precision), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|E},
715 {"min_prediction_order", NULL, OFFSET(min_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
716 {"max_prediction_order", NULL, OFFSET(max_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
717 {"prediction_order_method", NULL, OFFSET(prediction_order_method), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
718 {"min_partition_order", NULL, OFFSET(min_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
719 {"max_partition_order", NULL, OFFSET(max_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
720 {NULL},
721 };
722
723 #undef A
724 #undef V
725 #undef S
726 #undef E
727 #undef D
728 #undef DEFAULT
729
730 static AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options };
731
732 void avcodec_get_context_defaults(AVCodecContext *s){
733 memset(s, 0, sizeof(AVCodecContext));
734
735 s->av_class= &av_codec_context_class;
736
737 av_opt_set_defaults(s);
738
739 s->rc_eq= "tex^qComp";
740 s->time_base= (AVRational){0,1};
741 s->get_buffer= avcodec_default_get_buffer;
742 s->release_buffer= avcodec_default_release_buffer;
743 s->get_format= avcodec_default_get_format;
744 s->execute= avcodec_default_execute;
745 s->lmin= FF_QP2LAMBDA * s->qmin;
746 s->lmax= FF_QP2LAMBDA * s->qmax;
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 /**
756 * allocates a AVCodecContext and set it to defaults.
757 * this can be deallocated by simply calling free()
758 */
759 AVCodecContext *avcodec_alloc_context(void){
760 AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
761
762 if(avctx==NULL) return NULL;
763
764 avcodec_get_context_defaults(avctx);
765
766 return avctx;
767 }
768
769 void avcodec_get_frame_defaults(AVFrame *pic){
770 memset(pic, 0, sizeof(AVFrame));
771
772 pic->pts= AV_NOPTS_VALUE;
773 pic->key_frame= 1;
774 }
775
776 /**
777 * allocates a AVPFrame and set it to defaults.
778 * this can be deallocated by simply calling free()
779 */
780 AVFrame *avcodec_alloc_frame(void){
781 AVFrame *pic= av_malloc(sizeof(AVFrame));
782
783 if(pic==NULL) return NULL;
784
785 avcodec_get_frame_defaults(pic);
786
787 return pic;
788 }
789
790 int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
791 {
792 int ret= -1;
793
794 entangled_thread_counter++;
795 if(entangled_thread_counter != 1){
796 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
797 goto end;
798 }
799
800 if(avctx->codec)
801 goto end;
802
803 if (codec->priv_data_size > 0) {
804 avctx->priv_data = av_mallocz(codec->priv_data_size);
805 if (!avctx->priv_data)
806 goto end;
807 } else {
808 avctx->priv_data = NULL;
809 }
810
811 if(avctx->coded_width && avctx->coded_height)
812 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
813 else if(avctx->width && avctx->height)
814 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
815
816 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
817 av_freep(&avctx->priv_data);
818 goto end;
819 }
820
821 avctx->codec = codec;
822 avctx->codec_id = codec->id;
823 avctx->frame_number = 0;
824 ret = avctx->codec->init(avctx);
825 if (ret < 0) {
826 av_freep(&avctx->priv_data);
827 avctx->codec= NULL;
828 goto end;
829 }
830 ret=0;
831 end:
832 entangled_thread_counter--;
833 return ret;
834 }
835
836 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
837 const short *samples)
838 {
839 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
840 av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
841 return -1;
842 }
843 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
844 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
845 avctx->frame_number++;
846 return ret;
847 }else
848 return 0;
849 }
850
851 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
852 const AVFrame *pict)
853 {
854 if(buf_size < FF_MIN_BUFFER_SIZE){
855 av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
856 return -1;
857 }
858 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
859 return -1;
860 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
861 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
862 avctx->frame_number++;
863 emms_c(); //needed to avoid an emms_c() call before every return;
864
865 return ret;
866 }else
867 return 0;
868 }
869
870 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
871 const AVSubtitle *sub)
872 {
873 int ret;
874 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);
875 avctx->frame_number++;
876 return ret;
877 }
878
879 /**
880 * decode a frame.
881 * @param buf bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE larger then the actual read bytes
882 * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
883 * @param buf_size the size of the buffer in bytes
884 * @param got_picture_ptr zero if no frame could be decompressed, Otherwise, it is non zero
885 * @return -1 if error, otherwise return the number of
886 * bytes used.
887 */
888 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
889 int *got_picture_ptr,
890 uint8_t *buf, int buf_size)
891 {
892 int ret;
893
894 *got_picture_ptr= 0;
895 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
896 return -1;
897 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
898 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
899 buf, buf_size);
900
901 emms_c(); //needed to avoid an emms_c() call before every return;
902
903 if (*got_picture_ptr)
904 avctx->frame_number++;
905 }else
906 ret= 0;
907
908 return ret;
909 }
910
911 /* decode an audio frame. return -1 if error, otherwise return the
912 *number of bytes used. If no frame could be decompressed,
913 *frame_size_ptr is zero. Otherwise, it is the decompressed frame
914 *size in BYTES. */
915 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
916 int *frame_size_ptr,
917 uint8_t *buf, int buf_size)
918 {
919 int ret;
920
921 *frame_size_ptr= 0;
922 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
923 ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
924 buf, buf_size);
925 avctx->frame_number++;
926 }else
927 ret= 0;
928 return ret;
929 }
930
931 /* decode a subtitle message. return -1 if error, otherwise return the
932 *number of bytes used. If no subtitle could be decompressed,
933 *got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
934 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
935 int *got_sub_ptr,
936 const uint8_t *buf, int buf_size)
937 {
938 int ret;
939
940 *got_sub_ptr = 0;
941 ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
942 (uint8_t *)buf, buf_size);
943 if (*got_sub_ptr)
944 avctx->frame_number++;
945 return ret;
946 }
947
948 int avcodec_close(AVCodecContext *avctx)
949 {
950 entangled_thread_counter++;
951 if(entangled_thread_counter != 1){
952 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
953 entangled_thread_counter--;
954 return -1;
955 }
956
957 if (avctx->codec->close)
958 avctx->codec->close(avctx);
959 avcodec_default_free_buffers(avctx);
960 av_freep(&avctx->priv_data);
961 avctx->codec = NULL;
962 entangled_thread_counter--;
963 return 0;
964 }
965
966 AVCodec *avcodec_find_encoder(enum CodecID id)
967 {
968 AVCodec *p;
969 p = first_avcodec;
970 while (p) {
971 if (p->encode != NULL && p->id == id)
972 return p;
973 p = p->next;
974 }
975 return NULL;
976 }
977
978 AVCodec *avcodec_find_encoder_by_name(const char *name)
979 {
980 AVCodec *p;
981 p = first_avcodec;
982 while (p) {
983 if (p->encode != NULL && strcmp(name,p->name) == 0)
984 return p;
985 p = p->next;
986 }
987 return NULL;
988 }
989
990 AVCodec *avcodec_find_decoder(enum CodecID id)
991 {
992 AVCodec *p;
993 p = first_avcodec;
994 while (p) {
995 if (p->decode != NULL && p->id == id)
996 return p;
997 p = p->next;
998 }
999 return NULL;
1000 }
1001
1002 AVCodec *avcodec_find_decoder_by_name(const char *name)
1003 {
1004 AVCodec *p;
1005 p = first_avcodec;
1006 while (p) {
1007 if (p->decode != NULL && strcmp(name,p->name) == 0)
1008 return p;
1009 p = p->next;
1010 }
1011 return NULL;
1012 }
1013
1014 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1015 {
1016 const char *codec_name;
1017 AVCodec *p;
1018 char buf1[32];
1019 char channels_str[100];
1020 int bitrate;
1021
1022 if (encode)
1023 p = avcodec_find_encoder(enc->codec_id);
1024 else
1025 p = avcodec_find_decoder(enc->codec_id);
1026
1027 if (p) {
1028 codec_name = p->name;
1029 if (!encode && enc->codec_id == CODEC_ID_MP3) {
1030 if (enc->sub_id == 2)
1031 codec_name = "mp2";
1032 else if (enc->sub_id == 1)
1033 codec_name = "mp1";
1034 }
1035 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1036 /* fake mpeg2 transport stream codec (currently not
1037 registered) */
1038 codec_name = "mpeg2ts";
1039 } else if (enc->codec_name[0] != '\0') {
1040 codec_name = enc->codec_name;
1041 } else {
1042 /* output avi tags */
1043 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
1044 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
1045 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
1046 enc->codec_tag & 0xff,
1047 (enc->codec_tag >> 8) & 0xff,
1048 (enc->codec_tag >> 16) & 0xff,
1049 (enc->codec_tag >> 24) & 0xff,
1050 enc->codec_tag);
1051 } else {
1052 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
1053 }
1054 codec_name = buf1;
1055 }
1056
1057 switch(enc->codec_type) {
1058 case CODEC_TYPE_VIDEO:
1059 snprintf(buf, buf_size,
1060 "Video: %s%s",
1061 codec_name, enc->mb_decision ? " (hq)" : "");
1062 if (enc->pix_fmt != PIX_FMT_NONE) {
1063 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1064 ", %s",
1065 avcodec_get_pix_fmt_name(enc->pix_fmt));
1066 }
1067 if (enc->width) {
1068 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1069 ", %dx%d",
1070 enc->width, enc->height);
1071 if(av_log_get_level() >= AV_LOG_DEBUG){
1072 int g= ff_gcd(enc->time_base.num, enc->time_base.den);
1073 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1074 ", %d/%d",
1075 enc->time_base.num/g, enc->time_base.den/g);
1076 }
1077 }
1078 if (encode) {
1079 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1080 ", q=%d-%d", enc->qmin, enc->qmax);
1081 }
1082 bitrate = enc->bit_rate;
1083 break;
1084 case CODEC_TYPE_AUDIO:
1085 snprintf(buf, buf_size,
1086 "Audio: %s",
1087 codec_name);
1088 switch (enc->channels) {
1089 case 1:
1090 strcpy(channels_str, "mono");
1091 break;
1092 case 2:
1093 strcpy(channels_str, "stereo");
1094 break;
1095 case 6:
1096 strcpy(channels_str, "5:1");
1097 break;
1098 default:
1099 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);
1100 break;
1101 }
1102 if (enc->sample_rate) {
1103 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1104 ", %d Hz, %s",
1105 enc->sample_rate,
1106 channels_str);
1107 }
1108
1109 /* for PCM codecs, compute bitrate directly */
1110 switch(enc->codec_id) {
1111 case CODEC_ID_PCM_S32LE:
1112 case CODEC_ID_PCM_S32BE:
1113 case CODEC_ID_PCM_U32LE:
1114 case CODEC_ID_PCM_U32BE:
1115 bitrate = enc->sample_rate * enc->channels * 32;
1116 break;
1117 case CODEC_ID_PCM_S24LE:
1118 case CODEC_ID_PCM_S24BE:
1119 case CODEC_ID_PCM_U24LE:
1120 case CODEC_ID_PCM_U24BE:
1121 case CODEC_ID_PCM_S24DAUD:
1122 bitrate = enc->sample_rate * enc->channels * 24;
1123 break;
1124 case CODEC_ID_PCM_S16LE:
1125 case CODEC_ID_PCM_S16BE:
1126 case CODEC_ID_PCM_U16LE:
1127 case CODEC_ID_PCM_U16BE:
1128 bitrate = enc->sample_rate * enc->channels * 16;
1129 break;
1130 case CODEC_ID_PCM_S8:
1131 case CODEC_ID_PCM_U8:
1132 case CODEC_ID_PCM_ALAW:
1133 case CODEC_ID_PCM_MULAW:
1134 bitrate = enc->sample_rate * enc->channels * 8;
1135 break;
1136 default:
1137 bitrate = enc->bit_rate;
1138 break;
1139 }
1140 break;
1141 case CODEC_TYPE_DATA:
1142 snprintf(buf, buf_size, "Data: %s", codec_name);
1143 bitrate = enc->bit_rate;
1144 break;
1145 case CODEC_TYPE_SUBTITLE:
1146 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1147 bitrate = enc->bit_rate;
1148 break;
1149 default:
1150 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1151 return;
1152 }
1153 if (encode) {
1154 if (enc->flags & CODEC_FLAG_PASS1)
1155 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1156 ", pass 1");
1157 if (enc->flags & CODEC_FLAG_PASS2)
1158 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1159 ", pass 2");
1160 }
1161 if (bitrate != 0) {
1162 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1163 ", %d kb/s", bitrate / 1000);
1164 }
1165 }
1166
1167 unsigned avcodec_version( void )
1168 {
1169 return LIBAVCODEC_VERSION_INT;
1170 }
1171
1172 unsigned avcodec_build( void )
1173 {
1174 return LIBAVCODEC_BUILD;
1175 }
1176
1177 static void init_crcs(void){
1178 av_crc04C11DB7= av_mallocz_static(sizeof(AVCRC) * 257);
1179 av_crc8005 = av_mallocz_static(sizeof(AVCRC) * 257);
1180 av_crc07 = av_mallocz_static(sizeof(AVCRC) * 257);
1181 av_crc_init(av_crc04C11DB7, 0, 32, 0x04c11db7, sizeof(AVCRC)*257);
1182 av_crc_init(av_crc8005 , 0, 16, 0x8005 , sizeof(AVCRC)*257);
1183 av_crc_init(av_crc07 , 0, 8, 0x07 , sizeof(AVCRC)*257);
1184 }
1185
1186 /* must be called before any other functions */
1187 void avcodec_init(void)
1188 {
1189 static int inited = 0;
1190
1191 if (inited != 0)
1192 return;
1193 inited = 1;
1194
1195 dsputil_static_init();
1196 init_crcs();
1197 }
1198
1199 /**
1200 * Flush buffers, should be called when seeking or when swicthing to a different stream.
1201 */
1202 void avcodec_flush_buffers(AVCodecContext *avctx)
1203 {
1204 if(avctx->codec->flush)
1205 avctx->codec->flush(avctx);
1206 }
1207
1208 void avcodec_default_free_buffers(AVCodecContext *s){
1209 int i, j;
1210
1211 if(s->internal_buffer==NULL) return;
1212
1213 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1214 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1215 for(j=0; j<4; j++){
1216 av_freep(&buf->base[j]);
1217 buf->data[j]= NULL;
1218 }
1219 }
1220 av_freep(&s->internal_buffer);
1221
1222 s->internal_buffer_count=0;
1223 }
1224
1225 char av_get_pict_type_char(int pict_type){
1226 switch(pict_type){
1227 case I_TYPE: return 'I';
1228 case P_TYPE: return 'P';
1229 case B_TYPE: return 'B';
1230 case S_TYPE: return 'S';
1231 case SI_TYPE:return 'i';
1232 case SP_TYPE:return 'p';
1233 default: return '?';
1234 }
1235 }
1236
1237 int av_get_bits_per_sample(enum CodecID codec_id){
1238 switch(codec_id){
1239 case CODEC_ID_ADPCM_SBPRO_2:
1240 return 2;
1241 case CODEC_ID_ADPCM_SBPRO_3:
1242 return 3;
1243 case CODEC_ID_ADPCM_SBPRO_4:
1244 case CODEC_ID_ADPCM_CT:
1245 return 4;
1246 case CODEC_ID_PCM_ALAW:
1247 case CODEC_ID_PCM_MULAW:
1248 case CODEC_ID_PCM_S8:
1249 case CODEC_ID_PCM_U8:
1250 return 8;
1251 case CODEC_ID_PCM_S16BE:
1252 case CODEC_ID_PCM_S16LE:
1253 case CODEC_ID_PCM_U16BE:
1254 case CODEC_ID_PCM_U16LE:
1255 return 16;
1256 case CODEC_ID_PCM_S24DAUD:
1257 case CODEC_ID_PCM_S24BE:
1258 case CODEC_ID_PCM_S24LE:
1259 case CODEC_ID_PCM_U24BE:
1260 case CODEC_ID_PCM_U24LE:
1261 return 24;
1262 case CODEC_ID_PCM_S32BE:
1263 case CODEC_ID_PCM_S32LE:
1264 case CODEC_ID_PCM_U32BE:
1265 case CODEC_ID_PCM_U32LE:
1266 return 32;
1267 default:
1268 return 0;
1269 }
1270 }
1271
1272 #if !defined(HAVE_THREADS)
1273 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1274 return -1;
1275 }
1276 #endif
1277
1278 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1279 {
1280 unsigned int n = 0;
1281
1282 while(v >= 0xff) {
1283 *s++ = 0xff;
1284 v -= 0xff;
1285 n++;
1286 }
1287 *s = v;
1288 n++;
1289 return n;
1290 }
1291
1292 /* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1293 * Also, tries to create file in /tmp first, if possible.
1294 * *prefix can be a character constant; *filename will be allocated internally.
1295 * Returns file descriptor of opened file (or -1 on error)
1296 * and opened file name in **filename. */
1297 int av_tempfile(char *prefix, char **filename) {
1298 int fd=-1;
1299 #ifdef __MINGW32__
1300 *filename = tempnam(".", prefix);
1301 #else
1302 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1303 *filename = av_malloc(len);
1304 #endif
1305 /* -----common section-----*/
1306 if (*filename == NULL) {
1307 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1308 return -1;
1309 }
1310 #ifdef __MINGW32__
1311 fd = open(*filename, _O_RDWR | _O_BINARY | _O_CREAT, 0444);
1312 #else
1313 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1314 fd = mkstemp(*filename);
1315 if (fd < 0) {
1316 snprintf(*filename, len, "./%sXXXXXX", prefix);
1317 fd = mkstemp(*filename);
1318 }
1319 #endif
1320 /* -----common section-----*/
1321 if (fd < 0) {
1322 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1323 return -1;
1324 }
1325 return fd; /* success */
1326 }