malloc padding to avoid reading past the malloc()ed area.
[libav.git] / libavcodec / utils.c
CommitLineData
de6d9b64
FB
1/*
2 * utils for libavcodec
ff4ec49e 3 * Copyright (c) 2001 Fabrice Bellard.
9b879566 4 * Copyright (c) 2003 Michel Bardiaux for the av_log API
8f2ab833 5 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
de6d9b64 6 *
ff4ec49e
FB
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
de6d9b64 11 *
ff4ec49e 12 * This library is distributed in the hope that it will be useful,
de6d9b64 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
ff4ec49e
FB
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
de6d9b64 16 *
ff4ec49e
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17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
de6d9b64 20 */
983e3246
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21
22/**
23 * @file utils.c
24 * utils.
25 */
26
de6d9b64 27#include "avcodec.h"
3123dd79 28#include "dsputil.h"
1c2a8c7f 29#include "mpegvideo.h"
4c263142 30#include "integer.h"
6fd46414 31#include "opt.h"
9b879566 32#include <stdarg.h>
4c263142 33#include <limits.h>
860a40c8 34#include <float.h>
de6d9b64 35
44608ac7
RG
36const uint8_t ff_reverse[256]={
370x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
380x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
390x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
400x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
410x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
420x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
430x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
440x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
450x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
460x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
470x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
480x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
490x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
500x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
510x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
520x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
53};
54
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55static int volatile entangled_thread_counter=0;
56
b100eab8 57void avcodec_default_free_buffers(AVCodecContext *s);
eea8c08f 58
18f77016 59void *av_mallocz(unsigned int size)
3123dd79
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60{
61 void *ptr;
5b20b732 62
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63 ptr = av_malloc(size);
64 if (!ptr)
65 return NULL;
66 memset(ptr, 0, size);
67 return ptr;
68}
69
8e1e6f31
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70char *av_strdup(const char *s)
71{
72 char *ptr;
73 int len;
74 len = strlen(s) + 1;
75 ptr = av_malloc(len);
76 if (!ptr)
77 return NULL;
78 memcpy(ptr, s, len);
79 return ptr;
80}
81
82/**
83 * realloc which does nothing if the block is large enough
84 */
5c91a675 85void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
8e1e6f31
FB
86{
87 if(min_size < *size)
88 return ptr;
89
0ecca7a4 90 *size= FFMAX(17*min_size/16 + 32, min_size);
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91
92 return av_realloc(ptr, *size);
93}
94
95
855ea723 96static unsigned int last_static = 0;
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97static unsigned int allocated_static = 0;
98static void** array_static = NULL;
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99
100/**
101 * allocation of static arrays - do not use for normal allocation.
102 */
103void *av_mallocz_static(unsigned int size)
855ea723 104{
855ea723 105 void *ptr = av_mallocz(size);
855ea723 106
8d1f2ba5 107 if(ptr){
4e39ab4c 108 array_static =av_fast_realloc(array_static, &allocated_static, sizeof(void*)*(last_static+1));
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109 if(!array_static)
110 return NULL;
8d1f2ba5 111 array_static[last_static++] = ptr;
855ea723 112 }
8d1f2ba5 113
855ea723
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114 return ptr;
115}
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116
117/**
073c2593
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118 * same as above, but does realloc
119 */
120
121void *av_realloc_static(void *ptr, unsigned int size)
122{
123 int i;
124 if(!ptr)
125 return av_mallocz_static(size);
126 /* Look for the old ptr */
127 for(i = 0; i < last_static; i++) {
128 if(array_static[i] == ptr) {
129 array_static[i] = av_realloc(array_static[i], size);
130 return array_static[i];
131 }
132 }
133 return NULL;
134
135}
136
137/**
8d1f2ba5
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138 * free all static arrays and reset pointers to 0.
139 */
4cfbf61b 140void av_free_static(void)
855ea723 141{
8d1f2ba5
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142 while(last_static){
143 av_freep(&array_static[--last_static]);
855ea723 144 }
8d1f2ba5 145 av_freep(&array_static);
855ea723
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146}
147
81c5f887 148/**
32fbf33e
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149 * Call av_free_static automatically before it's too late
150 */
151
152static void do_free() __attribute__ ((destructor));
153
154static void do_free()
155{
156 av_free_static();
157}
158
159/**
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160 * Frees memory and sets the pointer to NULL.
161 * @param arg pointer to the pointer which should be freed
162 */
163void av_freep(void *arg)
4d7a0a05 164{
81c5f887 165 void **ptr= (void**)arg;
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166 av_free(*ptr);
167 *ptr = NULL;
168}
169
de6d9b64 170/* encoder management */
8b69867f 171AVCodec *first_avcodec = NULL;
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172
173void register_avcodec(AVCodec *format)
174{
175 AVCodec **p;
176 p = &first_avcodec;
177 while (*p != NULL) p = &(*p)->next;
178 *p = format;
179 format->next = NULL;
180}
181
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182void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
183 s->coded_width = width;
184 s->coded_height= height;
185 s->width = -((-width )>>s->lowres);
186 s->height= -((-height)>>s->lowres);
187}
188
d90cf87b 189typedef struct InternalBuffer{
1e491e29 190 int last_pic_num;
d90cf87b 191 uint8_t *base[4];
1e491e29 192 uint8_t *data[4];
237e4938 193 int linesize[4];
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194}InternalBuffer;
195
196#define INTERNAL_BUFFER_SIZE 32
1e491e29 197
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198#define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
199
200void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
201 int w_align= 1;
202 int h_align= 1;
203
204 switch(s->pix_fmt){
205 case PIX_FMT_YUV420P:
206 case PIX_FMT_YUV422:
ebb177dd 207 case PIX_FMT_UYVY422:
f0bbfc4a
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208 case PIX_FMT_YUV422P:
209 case PIX_FMT_YUV444P:
210 case PIX_FMT_GRAY8:
211 case PIX_FMT_YUVJ420P:
212 case PIX_FMT_YUVJ422P:
213 case PIX_FMT_YUVJ444P:
214 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
215 h_align= 16;
216 break;
217 case PIX_FMT_YUV411P:
f02be79d 218 case PIX_FMT_UYVY411:
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219 w_align=32;
220 h_align=8;
221 break;
222 case PIX_FMT_YUV410P:
223 if(s->codec_id == CODEC_ID_SVQ1){
224 w_align=64;
225 h_align=64;
226 }
d99fbbf4
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227 case PIX_FMT_RGB555:
228 if(s->codec_id == CODEC_ID_RPZA){
229 w_align=4;
230 h_align=4;
231 }
232 case PIX_FMT_PAL8:
233 if(s->codec_id == CODEC_ID_SMC){
234 w_align=4;
235 h_align=4;
236 }
f0bbfc4a 237 break;
c31b8121
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238 case PIX_FMT_BGR24:
239 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
240 w_align=4;
241 h_align=4;
242 }
243 break;
f0bbfc4a
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244 default:
245 w_align= 1;
246 h_align= 1;
247 break;
248 }
249
250 *width = ALIGN(*width , w_align);
251 *height= ALIGN(*height, h_align);
252}
253
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254int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
255 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
256 return 0;
257
258 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
259 return -1;
260}
261
492cd3a9 262int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
1e491e29 263 int i;
f0bbfc4a
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264 int w= s->width;
265 int h= s->height;
d90cf87b 266 InternalBuffer *buf;
237e4938 267 int *picture_number;
0ecca7a4 268
4e00e76b 269 assert(pic->data[0]==NULL);
d90cf87b 270 assert(INTERNAL_BUFFER_SIZE > s->internal_buffer_count);
1e491e29 271
0ecca7a4
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272 if(avcodec_check_dimensions(s,w,h))
273 return -1;
274
d90cf87b
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275 if(s->internal_buffer==NULL){
276 s->internal_buffer= av_mallocz(INTERNAL_BUFFER_SIZE*sizeof(InternalBuffer));
277 }
278#if 0
279 s->internal_buffer= av_fast_realloc(
280 s->internal_buffer,
281 &s->internal_buffer_size,
282 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
283 );
284#endif
285
286 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
237e4938
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287 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE-1]).last_pic_num; //FIXME ugly hack
288 (*picture_number)++;
289
d90cf87b 290 if(buf->base[0]){
237e4938
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291 pic->age= *picture_number - buf->last_pic_num;
292 buf->last_pic_num= *picture_number;
1e491e29 293 }else{
f0bbfc4a 294 int h_chroma_shift, v_chroma_shift;
c7622f9a
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295 int pixel_size, size[3];
296 AVPicture picture;
297
1e491e29 298 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
f0bbfc4a
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299
300 avcodec_align_dimensions(s, &w, &h);
f0bbfc4a 301
1e491e29
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302 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
303 w+= EDGE_WIDTH*2;
304 h+= EDGE_WIDTH*2;
305 }
c7622f9a
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306 avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
307 pixel_size= picture.linesize[0]*8 / w;
308//av_log(NULL, AV_LOG_ERROR, "%d %d %d %d\n", (int)picture.data[1], w, h, s->pix_fmt);
309 assert(pixel_size>=1);
310 //FIXME next ensures that linesize= 2^x uvlinesize, thats needed because some MC code assumes it
311 if(pixel_size == 3*8)
312 w= ALIGN(w, STRIDE_ALIGN<<h_chroma_shift);
313 else
314 w= ALIGN(pixel_size*w, STRIDE_ALIGN<<(h_chroma_shift+3)) / pixel_size;
315 size[1] = avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
316 size[0] = picture.linesize[0] * h;
317 size[1] -= size[0];
318 if(picture.data[2])
319 size[1]= size[2]= size[1]/2;
320 else
321 size[2]= 0;
322
d90cf87b 323 buf->last_pic_num= -256*256*256*64;
c7622f9a
MN
324 memset(buf->base, 0, sizeof(buf->base));
325 memset(buf->data, 0, sizeof(buf->data));
1e491e29 326
c7622f9a 327 for(i=0; i<3 && size[i]; i++){
2c19981a
MN
328 const int h_shift= i==0 ? 0 : h_chroma_shift;
329 const int v_shift= i==0 ? 0 : v_chroma_shift;
1e491e29 330
c7622f9a 331 buf->linesize[i]= picture.linesize[i];
1e491e29 332
c7622f9a 333 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
d90cf87b 334 if(buf->base[i]==NULL) return -1;
c7622f9a
MN
335 memset(buf->base[i], 128, size[i]);
336
337 // no edge if EDEG EMU or not planar YUV, we check for PAL8 redundantly to protect against a exploitable bug regression ...
338 if((s->flags&CODEC_FLAG_EMU_EDGE) || (s->pix_fmt == PIX_FMT_PAL8) || !size[2])
d90cf87b 339 buf->data[i] = buf->base[i];
1e491e29 340 else
3237f731 341 buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);
1e491e29
MN
342 }
343 pic->age= 256*256*256*64;
344 }
237e4938 345 pic->type= FF_BUFFER_TYPE_INTERNAL;
1e491e29 346
d90cf87b
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347 for(i=0; i<4; i++){
348 pic->base[i]= buf->base[i];
349 pic->data[i]= buf->data[i];
237e4938 350 pic->linesize[i]= buf->linesize[i];
d90cf87b
MN
351 }
352 s->internal_buffer_count++;
353
1e491e29
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354 return 0;
355}
356
492cd3a9 357void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
1e491e29 358 int i;
d90cf87b
MN
359 InternalBuffer *buf, *last, temp;
360
4e00e76b 361 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
59c673d5 362 assert(s->internal_buffer_count);
d90cf87b 363
b1609412 364 buf = NULL; /* avoids warning */
d90cf87b
MN
365 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
366 buf= &((InternalBuffer*)s->internal_buffer)[i];
367 if(buf->data[0] == pic->data[0])
368 break;
369 }
370 assert(i < s->internal_buffer_count);
371 s->internal_buffer_count--;
372 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
373
374 temp= *buf;
375 *buf= *last;
376 *last= temp;
377
378 for(i=0; i<3; i++){
1e491e29 379 pic->data[i]=NULL;
d90cf87b
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380// pic->base[i]=NULL;
381 }
1e491e29
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382//printf("R%X\n", pic->opaque);
383}
384
e1c2a5a0
RT
385int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
386 AVFrame temp_pic;
387 int i;
388
389 /* If no picture return a new buffer */
390 if(pic->data[0] == NULL) {
391 /* We will copy from buffer, so must be readable */
392 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
393 return s->get_buffer(s, pic);
394 }
395
396 /* If internal buffer type return the same buffer */
397 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
398 return 0;
399
400 /*
401 * Not internal type and reget_buffer not overridden, emulate cr buffer
402 */
403 temp_pic = *pic;
404 for(i = 0; i < 4; i++)
405 pic->data[i] = pic->base[i] = NULL;
406 pic->opaque = NULL;
407 /* Allocate new frame */
408 if (s->get_buffer(s, pic))
409 return -1;
410 /* Copy image data from old buffer to new buffer */
411 img_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
412 s->height);
413 s->release_buffer(s, &temp_pic); // Release old frame
414 return 0;
415}
416
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417int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){
418 int i;
419
420 for(i=0; i<count; i++){
421 int r= func(c, arg[i]);
422 if(ret) ret[i]= r;
423 }
424 return 0;
425}
426
494c56d3 427enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
a33c7159
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428 return fmt[0];
429}
430
43465395
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431static const char* context_to_name(void* ptr) {
432 AVCodecContext *avc= ptr;
433
434 if(avc && avc->codec && avc->codec->name)
435 return avc->codec->name;
436 else
437 return "NULL";
438}
439
860a40c8
MN
440#define OFFSET(x) (int)&((AVCodecContext*)0)->x
441#define DEFAULT 0 //should be NAN but it doesnt work as its not a constant in glibc as required by ANSI/ISO C
8bbf6db9
MN
442//these names are too long to be readable
443#define V AV_OPT_FLAG_VIDEO_PARAM
444#define A AV_OPT_FLAG_AUDIO_PARAM
445#define S AV_OPT_FLAG_SUBTITLE_PARAM
446#define E AV_OPT_FLAG_ENCODING_PARAM
447#define D AV_OPT_FLAG_DECODING_PARAM
860a40c8
MN
448
449static AVOption options[]={
8bbf6db9
MN
450{"bit_rate", NULL, OFFSET(bit_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
451{"bit_rate_tolerance", NULL, OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
637b5326 452{"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|A|E|D, "flags"},
fac862c6
MN
453{"mv4", "use four motion vector by macroblock (mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_4MV, INT_MIN, INT_MAX, V|E, "flags"},
454{"obmc", "use overlapped block motion compensation (h263+)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_OBMC, INT_MIN, INT_MAX, V|E, "flags"},
455{"qpel", "use 1/4 pel motion compensation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QPEL, INT_MIN, INT_MAX, V|E, "flags"},
456{"loop", "use loop filter", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOOP_FILTER, INT_MIN, INT_MAX, V|E, "flags"},
457{"qscale", "use fixed qscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QSCALE, INT_MIN, INT_MAX, 0, "flags"},
458{"gmc", "use gmc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GMC, INT_MIN, INT_MAX, V|E, "flags"},
459{"mv0", "always try a mb with mv=<0,0>", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_MV0, INT_MIN, INT_MAX, V|E, "flags"},
460{"part", "use data partitioning", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PART, INT_MIN, INT_MAX, V|E, "flags"},
461{"input_preserved", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INPUT_PRESERVED, INT_MIN, INT_MAX, 0, "flags"},
462{"pass1", "use internal 2pass ratecontrol in first pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS1, INT_MIN, INT_MAX, 0, "flags"},
463{"pass2", "use internal 2pass ratecontrol in second pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS2, INT_MIN, INT_MAX, 0, "flags"},
464{"extern_huff", "use external huffman table (for mjpeg)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EXTERN_HUFF, INT_MIN, INT_MAX, 0, "flags"},
465{"gray", "only decode/encode grayscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GRAY, INT_MIN, INT_MAX, V|E|D, "flags"},
466{"emu_edge", "don't draw edges", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EMU_EDGE, INT_MIN, INT_MAX, 0, "flags"},
467{"psnr", "error[?] variables will be set during encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PSNR, INT_MIN, INT_MAX, V|E, "flags"},
468{"truncated", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRUNCATED, INT_MIN, INT_MAX, 0, "flags"},
469{"naq", "normalize adaptive quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_NORMALIZE_AQP, INT_MIN, INT_MAX, V|E, "flags"},
470{"ildct", "use interlaced dct", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_DCT, INT_MIN, INT_MAX, V|E, "flags"},
471{"low_delay", "force low delay", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOW_DELAY, INT_MIN, INT_MAX, V|D, "flags"},
472{"alt", "enable alternate scantable (mpeg2/mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_ALT_SCAN, INT_MIN, INT_MAX, V|E, "flags"},
473{"trell", "use trellis quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRELLIS_QUANT, INT_MIN, INT_MAX, V|E, "flags"},
474{"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"},
475{"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"},
476{"aic", "h263 advanced intra coding / mpeg4 ac prediction", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_AC_PRED, INT_MIN, INT_MAX, V|E, "flags"},
477{"umv", "use unlimited motion vectors", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_UMV, INT_MIN, INT_MAX, V|E, "flags"},
478{"cbp", "use rate distortion optimization for cbp", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CBP_RD, INT_MIN, INT_MAX, V|E, "flags"},
8f196b14 479{"qprd", "use rate distortion optimization for qp selection", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QP_RD, INT_MIN, INT_MAX, V|E, "flags"},
fac862c6
MN
480{"aiv", "h263 alternative inter vlc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_AIV, INT_MIN, INT_MAX, V|E, "flags"},
481{"slice", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_SLICE_STRUCT, INT_MIN, INT_MAX, V|E, "flags"},
482{"ilme", "interlaced motion estimation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_ME, INT_MIN, INT_MAX, V|E, "flags"},
483{"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"},
8f196b14 484{"cgop", "closed gop", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CLOSED_GOP, INT_MIN, INT_MAX, V|E, "flags"},
fac862c6
MN
485{"fast", "allow non spec compliant speedup tricks", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FAST, INT_MIN, INT_MAX, V|E, "flags2"},
486{"sgop", "strictly enforce gop size", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_STRICT_GOP, INT_MIN, INT_MAX, V|E, "flags2"},
487{"noout", "skip bitstream encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NO_OUTPUT, INT_MIN, INT_MAX, V|E, "flags2"},
488{"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"},
860a40c8 489{"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
233f6f88 490{"me_method", NULL, OFFSET(me_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "me_method"},
860a40c8
MN
491{"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
492{"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
8bbf6db9 493{"gop_size", NULL, OFFSET(gop_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
860a40c8
MN
494{"rate_emu", NULL, OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
495{"sample_rate", NULL, OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
496{"channels", NULL, OFFSET(channels), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
497{"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
498{"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
499{"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
500{"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
8bbf6db9
MN
501{"qcompress", NULL, OFFSET(qcompress), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
502{"qblur", NULL, OFFSET(qblur), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
503{"qmin", NULL, OFFSET(qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
504{"qmax", NULL, OFFSET(qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
505{"max_qdiff", NULL, OFFSET(max_qdiff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
506{"max_b_frames", NULL, OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
507{"b_quant_factor", NULL, OFFSET(b_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
508{"rc_strategy", NULL, OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
509{"b_frame_strategy", NULL, OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
510{"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
860a40c8
MN
511{"rtp_mode", NULL, OFFSET(rtp_mode), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
512{"rtp_payload_size", NULL, OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
513{"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
514{"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
515{"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
516{"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
517{"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
518{"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
519{"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
520{"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
521{"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
522{"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
ec9127c4 523{"bugs", NULL, OFFSET(workaround_bugs), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "bug"},
fac862c6
MN
524{"autodetect", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
525{"old_msmpeg4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_OLD_MSMPEG4, INT_MIN, INT_MAX, V|D, "bug"},
526{"xvid_ilace", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_XVID_ILACE, INT_MIN, INT_MAX, V|D, "bug"},
527{"ump4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_UMP4, INT_MIN, INT_MAX, V|D, "bug"},
528{"no_padding", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_NO_PADDING, INT_MIN, INT_MAX, V|D, "bug"},
529{"amv", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AMV, INT_MIN, INT_MAX, V|D, "bug"},
530{"ac_vlc", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AC_VLC, INT_MIN, INT_MAX, V|D, "bug"},
531{"qpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
532{"std_qpel", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_STD_QPEL, INT_MIN, INT_MAX, V|D, "bug"},
533{"qpel_chroma2", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA2, INT_MIN, INT_MAX, V|D, "bug"},
534{"direct_blocksize", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DIRECT_BLOCKSIZE, INT_MIN, INT_MAX, V|D, "bug"},
535{"edge", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_EDGE, INT_MIN, INT_MAX, V|D, "bug"},
536{"hpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_HPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
537{"dc_clip", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DC_CLIP, INT_MIN, INT_MAX, V|D, "bug"},
538{"ms", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_MS, INT_MIN, INT_MAX, V|D, "bug"},
539{"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},
540{"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},
ec9127c4 541{"strict", NULL, OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "strict"},
fac862c6
MN
542{"very", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_VERY_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
543{"strict", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
544{"normal", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_NORMAL, INT_MIN, INT_MAX, V|E, "strict"},
545{"inofficial", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_INOFFICIAL, INT_MIN, INT_MAX, V|E, "strict"},
546{"experimental", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|E, "strict"},
8bbf6db9 547{"b_quant_offset", NULL, OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
8f196b14 548{"er", NULL, OFFSET(error_resilience), FF_OPT_TYPE_INT, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
fac862c6
MN
549{"careful", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
550{"compliant", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_COMPLIANT, INT_MIN, INT_MAX, V|D, "er"},
551{"aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
552{"very_aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_VERY_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
860a40c8
MN
553{"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
554{"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
555{"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
8bbf6db9 556{"mpeg_quant", NULL, OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
860a40c8
MN
557{"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
558{"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
8bbf6db9
MN
559{"rc_qsquish", NULL, OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
560{"rc_qmod_amp", NULL, OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
561{"rc_qmod_freq", NULL, OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
860a40c8 562{"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
8bbf6db9
MN
563{"rc_eq", NULL, OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX, V|E},
564{"rc_max_rate", NULL, OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
565{"rc_min_rate", NULL, OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
566{"rc_buffer_size", NULL, OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
567{"rc_buf_aggressivity", NULL, OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
568{"i_quant_factor", NULL, OFFSET(i_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
569{"i_quant_offset", NULL, OFFSET(i_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
570{"rc_initial_cplx", NULL, OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
637b5326 571{"dct", NULL, OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E, "dct"},
fac862c6
MN
572{"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_AUTO, INT_MIN, INT_MAX, V|E, "dct"},
573{"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FASTINT, INT_MIN, INT_MAX, V|E, "dct"},
574{"int", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_INT, INT_MIN, INT_MAX, V|E, "dct"},
575{"mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MMX, INT_MIN, INT_MAX, V|E, "dct"},
576{"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MLIB, INT_MIN, INT_MAX, V|E, "dct"},
577{"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_ALTIVEC, INT_MIN, INT_MAX, V|E, "dct"},
578{"faan", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FAAN, INT_MIN, INT_MAX, V|E, "dct"},
8f196b14
MN
579{"lumi_mask", "lumimasking", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
580{"tcplx_mask", "temporal complexity masking", OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
581{"scplx_mask", "spatial complexity masking", OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
582{"p_mask", "inter masking", OFFSET(p_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
583{"dark_mask", "darkness masking", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
860a40c8 584{"unused", NULL, OFFSET(unused), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
637b5326 585{"idct", NULL, OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E|D, "idct"},
fac862c6
MN
586{"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_AUTO, INT_MIN, INT_MAX, V|E|D, "idct"},
587{"int", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_INT, INT_MIN, INT_MAX, V|E|D, "idct"},
588{"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLE, INT_MIN, INT_MAX, V|E|D, "idct"},
589{"simplemmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
590{"libmpeg2mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_LIBMPEG2MMX, INT_MIN, INT_MAX, V|E|D, "idct"},
591{"ps2", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_PS2, INT_MIN, INT_MAX, V|E|D, "idct"},
592{"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_MLIB, INT_MIN, INT_MAX, V|E|D, "idct"},
593{"arm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ARM, INT_MIN, INT_MAX, V|E|D, "idct"},
594{"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ALTIVEC, INT_MIN, INT_MAX, V|E|D, "idct"},
595{"sh4", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SH4, INT_MIN, INT_MAX, V|E|D, "idct"},
596{"simplearm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARM, INT_MIN, INT_MAX, V|E|D, "idct"},
597{"h264", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_H264, INT_MIN, INT_MAX, V|E|D, "idct"},
598{"vp3", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_VP3, INT_MIN, INT_MAX, V|E|D, "idct"},
599{"ipp", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_IPP, INT_MIN, INT_MAX, V|E|D, "idct"},
600{"xvidmmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_XVIDMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
860a40c8 601{"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
8f196b14 602{"ec", NULL, OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, 3, INT_MIN, INT_MAX, V|D, "ec"},
fac862c6
MN
603{"guess_mvs", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_GUESS_MVS, INT_MIN, INT_MAX, V|D, "ec"},
604{"deblock", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_DEBLOCK, INT_MIN, INT_MAX, V|D, "ec"},
860a40c8 605{"bits_per_sample", NULL, OFFSET(bits_per_sample), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
8f196b14 606{"pred", "prediction method", OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "pred"},
fac862c6
MN
607{"left", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_LEFT, INT_MIN, INT_MAX, V|E, "pred"},
608{"plane", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_PLANE, INT_MIN, INT_MAX, V|E, "pred"},
609{"median", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_MEDIAN, INT_MIN, INT_MAX, V|E, "pred"},
637b5326
MN
610{"aspect", NULL, OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, 0, 10, V|E},
611{"debug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, DEFAULT, 0, INT_MAX, V|A|S|E|D, "debug"},
fac862c6
MN
612{"pict", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PICT_INFO, INT_MIN, INT_MAX, V|D, "debug"},
613{"rc", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_RC, INT_MIN, INT_MAX, V|E, "debug"},
614{"bitstream", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BITSTREAM, INT_MIN, INT_MAX, V|D, "debug"},
615{"mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
616{"qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_QP, INT_MIN, INT_MAX, V|D, "debug"},
617{"mv", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MV, INT_MIN, INT_MAX, V|D, "debug"},
618{"dct_coeff", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_DCT_COEFF, INT_MIN, INT_MAX, V|D, "debug"},
619{"skip", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_SKIP, INT_MIN, INT_MAX, V|D, "debug"},
620{"startcode", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_STARTCODE, INT_MIN, INT_MAX, V|D, "debug"},
621{"pts", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PTS, INT_MIN, INT_MAX, V|D, "debug"},
622{"er", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_ER, INT_MIN, INT_MAX, V|D, "debug"},
623{"mmco", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MMCO, INT_MIN, INT_MAX, V|D, "debug"},
624{"bugs", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BUGS, INT_MIN, INT_MAX, V|D, "debug"},
625{"vis_qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_QP, INT_MIN, INT_MAX, V|D, "debug"},
626{"vis_mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
637b5326 627{"vismv", "visualize motion vectors", OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|D, "debug_mv"},
fac862c6
MN
628{"pf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_P_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
629{"bf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
630{"bb", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_BACK, INT_MIN, INT_MAX, V|D, "debug_mv"},
8bbf6db9
MN
631{"mb_qmin", NULL, OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
632{"mb_qmax", NULL, OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
fac862c6
MN
633{"cmp", "full pel me compare function", OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
634{"subcmp", "sub pel me compare function", OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
ec9127c4
MN
635{"mbcmp", "macroblock compare function", OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
636{"ildctcmp", "interlaced dct compare function", OFFSET(ildct_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
637{"dia_size", NULL, OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
8bbf6db9 638{"last_pred", NULL, OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
637b5326 639{"preme", NULL, OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
ec9127c4 640{"precmp", "pre motion estimation compare function", OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
fac862c6
MN
641{"sad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
642{"sse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
643{"satd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SATD, INT_MIN, INT_MAX, V|E, "cmp_func"},
644{"dct", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCT, INT_MIN, INT_MAX, V|E, "cmp_func"},
645{"psnr", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_PSNR, INT_MIN, INT_MAX, V|E, "cmp_func"},
646{"bit", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_BIT, INT_MIN, INT_MAX, V|E, "cmp_func"},
647{"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_RD, INT_MIN, INT_MAX, V|E, "cmp_func"},
648{"zero", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_ZERO, INT_MIN, INT_MAX, V|E, "cmp_func"},
649{"vsad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
650{"vsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
651{"nsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_NSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
652{"w53", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W53, INT_MIN, INT_MAX, V|E, "cmp_func"},
653{"w97", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W97, INT_MIN, INT_MAX, V|E, "cmp_func"},
654{"dctmax", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
655{"chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_CHROMA, INT_MIN, INT_MAX, V|E, "cmp_func"},
8bbf6db9 656{"pre_dia_size", NULL, OFFSET(pre_dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
8f196b14 657{"subq", "sub pel motion estimation quality", OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
860a40c8 658{"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
8bbf6db9
MN
659{"me_range", NULL, OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
660{"ibias", NULL, OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
661{"pbias", NULL, OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
860a40c8
MN
662{"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
663{"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
664{"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
ec9127c4 665{"coder", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "coder"},
8f196b14
MN
666{"vlc", "variable length coder / huffman coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_VLC, INT_MIN, INT_MAX, V|E, "coder"},
667{"ac", "arithmetic coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_AC, INT_MIN, INT_MAX, V|E, "coder"},
668{"context", "context model", OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
860a40c8
MN
669{"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
670{"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
ec9127c4 671{"mbd", NULL, OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "mbd"},
fac862c6
MN
672{"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_SIMPLE, INT_MIN, INT_MAX, V|E, "mbd"},
673{"bits", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_BITS, INT_MIN, INT_MAX, V|E, "mbd"},
674{"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_RD, INT_MIN, INT_MAX, V|E, "mbd"},
860a40c8 675{"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
8bbf6db9 676{"sc_threshold", NULL, OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
637b5326
MN
677{"lmin", "min lagrange factor", OFFSET(lmin), FF_OPT_TYPE_INT, 2*FF_QP2LAMBDA, 0, INT_MAX, V|E},
678{"lmax", "max lagrange factor", OFFSET(lmax), FF_OPT_TYPE_INT, 31*FF_QP2LAMBDA, 0, INT_MAX, V|E},
8f196b14 679{"nr", "noise reduction", OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
8bbf6db9
MN
680{"rc_init_occupancy", NULL, OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
681{"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
860a40c8
MN
682{"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
683{"error_rate", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
ec9127c4 684{"antialias", NULL, OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "aa"},
fac862c6
MN
685{"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_AUTO, INT_MIN, INT_MAX, V|D, "aa"},
686{"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FASTINT, INT_MIN, INT_MAX, V|D, "aa"},
687{"int", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_INT, INT_MIN, INT_MAX, V|D, "aa"},
688{"float", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FLOAT, INT_MIN, INT_MAX, V|D, "aa"},
8f196b14 689{"qns", "quantizer noise shaping", OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
8bbf6db9 690{"thread_count", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E|D},
637b5326 691{"me_threshold", "motion estimaton threshold", OFFSET(me_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
860a40c8 692{"mb_threshold", NULL, OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
8bbf6db9 693{"dc", NULL, OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
8f196b14 694{"nssew", "nsse weight", OFFSET(nsse_weight), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
8bbf6db9
MN
695{"skip_top", NULL, OFFSET(skip_top), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
696{"skip_bottom", NULL, OFFSET(skip_bottom), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
ec9127c4 697{"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
fac862c6 698{"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
ec9127c4 699{"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
fac862c6 700{"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
637b5326 701{"lowres", NULL, OFFSET(lowres), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|D},
8bbf6db9
MN
702{"frame_skip_threshold", NULL, OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
703{"frame_skip_factor", NULL, OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
704{"frame_skip_exp", NULL, OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
d4de20d1 705{"skipcmp", "frame skip compare function", OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
8bbf6db9
MN
706{"border_mask", NULL, OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
707{"mb_lmin", NULL, OFFSET(mb_lmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
708{"mb_lmax", NULL, OFFSET(mb_lmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
709{"me_penalty_compensation", NULL, OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
860a40c8
MN
710{NULL},
711};
712
8bbf6db9
MN
713#undef A
714#undef V
715
860a40c8 716static AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options };
43465395 717
a949d72e 718void avcodec_get_context_defaults(AVCodecContext *s){
9740beff
MN
719 memset(s, 0, sizeof(AVCodecContext));
720
43465395 721 s->av_class= &av_codec_context_class;
e8b62df6
MN
722 s->bit_rate= 800*1000;
723 s->bit_rate_tolerance= s->bit_rate*10;
a949d72e
MN
724 s->qmin= 2;
725 s->qmax= 31;
6e0d8c06
MN
726 s->mb_lmin= FF_QP2LAMBDA * 2;
727 s->mb_lmax= FF_QP2LAMBDA * 31;
a949d72e
MN
728 s->rc_eq= "tex^qComp";
729 s->qcompress= 0.5;
e8b62df6
MN
730 s->max_qdiff= 3;
731 s->b_quant_factor=1.25;
732 s->b_quant_offset=1.25;
b3a391e8 733 s->i_quant_factor=-0.8;
e8b62df6 734 s->i_quant_offset=0.0;
4d2858de 735 s->error_concealment= 3;
8d0e42ca 736 s->error_resilience= 1;
4d2858de 737 s->workaround_bugs= FF_BUG_AUTODETECT;
c0df9d75 738 s->time_base= (AVRational){0,1};
8d0e42ca
MN
739 s->gop_size= 50;
740 s->me_method= ME_EPZS;
1e491e29
MN
741 s->get_buffer= avcodec_default_get_buffer;
742 s->release_buffer= avcodec_default_release_buffer;
a33c7159 743 s->get_format= avcodec_default_get_format;
9c3d33d6
MN
744 s->execute= avcodec_default_execute;
745 s->thread_count=1;
826f429a 746 s->me_subpel_quality=8;
158c7f05
MN
747 s->lmin= FF_QP2LAMBDA * s->qmin;
748 s->lmax= FF_QP2LAMBDA * s->qmax;
5ff85f1d 749 s->sample_aspect_ratio= (AVRational){0,1};
620fe604 750 s->ildct_cmp= FF_CMP_VSAD;
baced9f5
MN
751 s->profile= FF_PROFILE_UNKNOWN;
752 s->level= FF_LEVEL_UNKNOWN;
09c3e44e 753 s->me_penalty_compensation= 256;
644a9262 754 s->pix_fmt= PIX_FMT_NONE;
ec9127c4 755 s->frame_skip_cmp= FF_CMP_DCTMAX;
8f196b14 756 s->nsse_weight= 8;
1984f635
MN
757
758 s->intra_quant_bias= FF_DEFAULT_QUANT_BIAS;
759 s->inter_quant_bias= FF_DEFAULT_QUANT_BIAS;
2a2bbcb0 760 s->palctrl = NULL;
e1c2a5a0 761 s->reget_buffer= avcodec_default_reget_buffer;
a949d72e
MN
762}
763
764/**
765 * allocates a AVCodecContext and set it to defaults.
766 * this can be deallocated by simply calling free()
767 */
7ffbb60e 768AVCodecContext *avcodec_alloc_context(void){
9740beff 769 AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
a949d72e
MN
770
771 if(avctx==NULL) return NULL;
772
773 avcodec_get_context_defaults(avctx);
774
775 return avctx;
776}
777
9740beff
MN
778void avcodec_get_frame_defaults(AVFrame *pic){
779 memset(pic, 0, sizeof(AVFrame));
780
781 pic->pts= AV_NOPTS_VALUE;
c342499d 782 pic->key_frame= 1;
9740beff
MN
783}
784
1e491e29 785/**
492cd3a9 786 * allocates a AVPFrame and set it to defaults.
1e491e29
MN
787 * this can be deallocated by simply calling free()
788 */
492cd3a9 789AVFrame *avcodec_alloc_frame(void){
9740beff
MN
790 AVFrame *pic= av_malloc(sizeof(AVFrame));
791
792 if(pic==NULL) return NULL;
793
794 avcodec_get_frame_defaults(pic);
1e491e29
MN
795
796 return pic;
797}
798
de6d9b64
FB
799int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
800{
ddebfb15
MN
801 int ret= -1;
802
803 entangled_thread_counter++;
804 if(entangled_thread_counter != 1){
805 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
806 goto end;
807 }
de6d9b64 808
09770af8 809 if(avctx->codec)
ddebfb15 810 goto end;
09770af8 811
de6d9b64 812 avctx->codec = codec;
4cb3ca72 813 avctx->codec_id = codec->id;
de6d9b64 814 avctx->frame_number = 0;
0edf8a7a
PG
815 if (codec->priv_data_size > 0) {
816 avctx->priv_data = av_mallocz(codec->priv_data_size);
817 if (!avctx->priv_data)
ddebfb15 818 goto end;
0edf8a7a
PG
819 } else {
820 avctx->priv_data = NULL;
821 }
21adafec
MN
822
823 if(avctx->coded_width && avctx->coded_height)
824 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
825 else if(avctx->width && avctx->height)
826 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
827
0ecca7a4
MN
828 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
829 av_freep(&avctx->priv_data);
ddebfb15 830 goto end;
0ecca7a4
MN
831 }
832
de6d9b64
FB
833 ret = avctx->codec->init(avctx);
834 if (ret < 0) {
3123dd79 835 av_freep(&avctx->priv_data);
ddebfb15 836 goto end;
de6d9b64 837 }
ddebfb15
MN
838 ret=0;
839end:
840 entangled_thread_counter--;
841 return ret;
de6d9b64
FB
842}
843
0c1a9eda 844int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64
FB
845 const short *samples)
846{
0ecca7a4
MN
847 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
848 av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
849 return -1;
850 }
6f824977
MN
851 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
852 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
853 avctx->frame_number++;
854 return ret;
855 }else
856 return 0;
de6d9b64
FB
857}
858
0c1a9eda 859int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 860 const AVFrame *pict)
de6d9b64 861{
0ecca7a4
MN
862 if(buf_size < FF_MIN_BUFFER_SIZE){
863 av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
864 return -1;
865 }
866 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
867 return -1;
6f824977
MN
868 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
869 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
870 avctx->frame_number++;
bb628dae 871 emms_c(); //needed to avoid an emms_c() call before every return;
6bb925f4 872
6f824977
MN
873 return ret;
874 }else
875 return 0;
de6d9b64
FB
876}
877
240c1657
FB
878int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
879 const AVSubtitle *sub)
880{
881 int ret;
882 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);
883 avctx->frame_number++;
884 return ret;
885}
886
f138f883
MN
887/**
888 * decode a frame.
889 * @param buf bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE larger then the actual read bytes
890 * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
891 * @param buf_size the size of the buffer in bytes
892 * @param got_picture_ptr zero if no frame could be decompressed, Otherwise, it is non zero
893 * @return -1 if error, otherwise return the number of
894 * bytes used.
895 */
492cd3a9 896int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 897 int *got_picture_ptr,
0c1a9eda 898 uint8_t *buf, int buf_size)
de6d9b64
FB
899{
900 int ret;
1e491e29 901
53db1cae 902 *got_picture_ptr= 0;
0ecca7a4
MN
903 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
904 return -1;
934982c4
MN
905 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
906 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
907 buf, buf_size);
6bb925f4 908
bb628dae 909 emms_c(); //needed to avoid an emms_c() call before every return;
1e491e29 910
934982c4
MN
911 if (*got_picture_ptr)
912 avctx->frame_number++;
913 }else
914 ret= 0;
915
de6d9b64
FB
916 return ret;
917}
918
919/* decode an audio frame. return -1 if error, otherwise return the
920 *number of bytes used. If no frame could be decompressed,
921 *frame_size_ptr is zero. Otherwise, it is the decompressed frame
922 *size in BYTES. */
0c1a9eda 923int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 924 int *frame_size_ptr,
0c1a9eda 925 uint8_t *buf, int buf_size)
de6d9b64
FB
926{
927 int ret;
928
53db1cae 929 *frame_size_ptr= 0;
fec9ccb7
MN
930 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
931 ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
932 buf, buf_size);
933 avctx->frame_number++;
934 }else
935 ret= 0;
de6d9b64
FB
936 return ret;
937}
938
240c1657
FB
939/* decode a subtitle message. return -1 if error, otherwise return the
940 *number of bytes used. If no subtitle could be decompressed,
941 *got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
942int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
943 int *got_sub_ptr,
944 const uint8_t *buf, int buf_size)
945{
946 int ret;
947
948 *got_sub_ptr = 0;
949 ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
950 (uint8_t *)buf, buf_size);
951 if (*got_sub_ptr)
952 avctx->frame_number++;
953 return ret;
954}
955
de6d9b64
FB
956int avcodec_close(AVCodecContext *avctx)
957{
ddebfb15
MN
958 entangled_thread_counter++;
959 if(entangled_thread_counter != 1){
960 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
961 entangled_thread_counter--;
962 return -1;
963 }
964
de6d9b64
FB
965 if (avctx->codec->close)
966 avctx->codec->close(avctx);
eea8c08f 967 avcodec_default_free_buffers(avctx);
3123dd79 968 av_freep(&avctx->priv_data);
de6d9b64 969 avctx->codec = NULL;
ddebfb15 970 entangled_thread_counter--;
de6d9b64
FB
971 return 0;
972}
973
974AVCodec *avcodec_find_encoder(enum CodecID id)
975{
976 AVCodec *p;
977 p = first_avcodec;
978 while (p) {
979 if (p->encode != NULL && p->id == id)
980 return p;
981 p = p->next;
982 }
983 return NULL;
984}
985
98f3b098
A
986AVCodec *avcodec_find_encoder_by_name(const char *name)
987{
988 AVCodec *p;
989 p = first_avcodec;
990 while (p) {
991 if (p->encode != NULL && strcmp(name,p->name) == 0)
992 return p;
993 p = p->next;
994 }
995 return NULL;
996}
997
de6d9b64
FB
998AVCodec *avcodec_find_decoder(enum CodecID id)
999{
1000 AVCodec *p;
1001 p = first_avcodec;
1002 while (p) {
1003 if (p->decode != NULL && p->id == id)
1004 return p;
1005 p = p->next;
1006 }
1007 return NULL;
1008}
1009
1010AVCodec *avcodec_find_decoder_by_name(const char *name)
1011{
1012 AVCodec *p;
1013 p = first_avcodec;
1014 while (p) {
1015 if (p->decode != NULL && strcmp(name,p->name) == 0)
1016 return p;
1017 p = p->next;
1018 }
1019 return NULL;
1020}
1021
de6d9b64
FB
1022void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1023{
1024 const char *codec_name;
1025 AVCodec *p;
1026 char buf1[32];
623563c0 1027 char channels_str[100];
a96b68b7 1028 int bitrate;
de6d9b64
FB
1029
1030 if (encode)
1031 p = avcodec_find_encoder(enc->codec_id);
1032 else
1033 p = avcodec_find_decoder(enc->codec_id);
1034
1035 if (p) {
1036 codec_name = p->name;
98ce5991
FB
1037 if (!encode && enc->codec_id == CODEC_ID_MP3) {
1038 if (enc->sub_id == 2)
1039 codec_name = "mp2";
1040 else if (enc->sub_id == 1)
1041 codec_name = "mp1";
1042 }
985180a1
FB
1043 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1044 /* fake mpeg2 transport stream codec (currently not
1045 registered) */
1046 codec_name = "mpeg2ts";
de6d9b64
FB
1047 } else if (enc->codec_name[0] != '\0') {
1048 codec_name = enc->codec_name;
1049 } else {
1050 /* output avi tags */
b983a5c6
MN
1051 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
1052 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
1053 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
de6d9b64
FB
1054 enc->codec_tag & 0xff,
1055 (enc->codec_tag >> 8) & 0xff,
1056 (enc->codec_tag >> 16) & 0xff,
b983a5c6
MN
1057 (enc->codec_tag >> 24) & 0xff,
1058 enc->codec_tag);
de6d9b64
FB
1059 } else {
1060 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
1061 }
1062 codec_name = buf1;
1063 }
1064
1065 switch(enc->codec_type) {
1066 case CODEC_TYPE_VIDEO:
1067 snprintf(buf, buf_size,
1068 "Video: %s%s",
7d1c3fc1 1069 codec_name, enc->mb_decision ? " (hq)" : "");
82c0c4ba 1070 if (enc->pix_fmt != PIX_FMT_NONE) {
cf087595
FB
1071 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1072 ", %s",
9bbffbb1 1073 avcodec_get_pix_fmt_name(enc->pix_fmt));
cf087595 1074 }
de6d9b64
FB
1075 if (enc->width) {
1076 snprintf(buf + strlen(buf), buf_size - strlen(buf),
21189011
MN
1077 ", %dx%d",
1078 enc->width, enc->height);
1079 if(av_log_get_level() >= AV_LOG_DEBUG){
1080 int g= ff_gcd(enc->time_base.num, enc->time_base.den);
1081 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1082 ", %d/%d",
1083 enc->time_base.num/g, enc->time_base.den/g);
1084 }
de6d9b64 1085 }
4bfad535
FB
1086 if (encode) {
1087 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1088 ", q=%d-%d", enc->qmin, enc->qmax);
1089 }
a96b68b7 1090 bitrate = enc->bit_rate;
de6d9b64
FB
1091 break;
1092 case CODEC_TYPE_AUDIO:
1093 snprintf(buf, buf_size,
1094 "Audio: %s",
1095 codec_name);
e0d2714a
J
1096 switch (enc->channels) {
1097 case 1:
623563c0 1098 strcpy(channels_str, "mono");
e0d2714a
J
1099 break;
1100 case 2:
623563c0 1101 strcpy(channels_str, "stereo");
e0d2714a
J
1102 break;
1103 case 6:
623563c0 1104 strcpy(channels_str, "5:1");
e0d2714a
J
1105 break;
1106 default:
2fc8ea24 1107 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);
e0d2714a
J
1108 break;
1109 }
de6d9b64
FB
1110 if (enc->sample_rate) {
1111 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1112 ", %d Hz, %s",
1113 enc->sample_rate,
e0d2714a 1114 channels_str);
de6d9b64 1115 }
e0d2714a 1116
a96b68b7
FB
1117 /* for PCM codecs, compute bitrate directly */
1118 switch(enc->codec_id) {
b461b3bc
RD
1119 case CODEC_ID_PCM_S32LE:
1120 case CODEC_ID_PCM_S32BE:
1121 case CODEC_ID_PCM_U32LE:
1122 case CODEC_ID_PCM_U32BE:
1123 bitrate = enc->sample_rate * enc->channels * 32;
1124 break;
1125 case CODEC_ID_PCM_S24LE:
1126 case CODEC_ID_PCM_S24BE:
1127 case CODEC_ID_PCM_U24LE:
1128 case CODEC_ID_PCM_U24BE:
1129 case CODEC_ID_PCM_S24DAUD:
1130 bitrate = enc->sample_rate * enc->channels * 24;
1131 break;
a96b68b7
FB
1132 case CODEC_ID_PCM_S16LE:
1133 case CODEC_ID_PCM_S16BE:
1134 case CODEC_ID_PCM_U16LE:
1135 case CODEC_ID_PCM_U16BE:
a190b7e9 1136 bitrate = enc->sample_rate * enc->channels * 16;
a96b68b7
FB
1137 break;
1138 case CODEC_ID_PCM_S8:
1139 case CODEC_ID_PCM_U8:
1140 case CODEC_ID_PCM_ALAW:
1141 case CODEC_ID_PCM_MULAW:
a190b7e9 1142 bitrate = enc->sample_rate * enc->channels * 8;
a96b68b7
FB
1143 break;
1144 default:
1145 bitrate = enc->bit_rate;
1146 break;
1147 }
de6d9b64 1148 break;
985180a1
FB
1149 case CODEC_TYPE_DATA:
1150 snprintf(buf, buf_size, "Data: %s", codec_name);
240c1657
FB
1151 bitrate = enc->bit_rate;
1152 break;
1153 case CODEC_TYPE_SUBTITLE:
1154 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
985180a1
FB
1155 bitrate = enc->bit_rate;
1156 break;
de6d9b64 1157 default:
9fe5a7b8
MN
1158 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1159 return;
de6d9b64 1160 }
4bfad535
FB
1161 if (encode) {
1162 if (enc->flags & CODEC_FLAG_PASS1)
1163 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1164 ", pass 1");
1165 if (enc->flags & CODEC_FLAG_PASS2)
1166 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1167 ", pass 2");
1168 }
a96b68b7 1169 if (bitrate != 0) {
de6d9b64 1170 snprintf(buf + strlen(buf), buf_size - strlen(buf),
a96b68b7 1171 ", %d kb/s", bitrate / 1000);
de6d9b64
FB
1172 }
1173}
1174
156e5023
NK
1175unsigned avcodec_version( void )
1176{
1177 return LIBAVCODEC_VERSION_INT;
1178}
cf087595 1179
8bceb6af
NK
1180unsigned avcodec_build( void )
1181{
1182 return LIBAVCODEC_BUILD;
1183}
1184
de6d9b64
FB
1185/* must be called before any other functions */
1186void avcodec_init(void)
1187{
0344cd0a
AB
1188 static int inited = 0;
1189
1190 if (inited != 0)
1191 return;
1192 inited = 1;
1193
59cf08ce 1194 dsputil_static_init();
de6d9b64
FB
1195}
1196
7a06ff14
MN
1197/**
1198 * Flush buffers, should be called when seeking or when swicthing to a different stream.
1199 */
1c2a8c7f
MN
1200void avcodec_flush_buffers(AVCodecContext *avctx)
1201{
7a06ff14
MN
1202 if(avctx->codec->flush)
1203 avctx->codec->flush(avctx);
1c2a8c7f
MN
1204}
1205
b100eab8 1206void avcodec_default_free_buffers(AVCodecContext *s){
d90cf87b
MN
1207 int i, j;
1208
1209 if(s->internal_buffer==NULL) return;
1210
1211 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1212 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1213 for(j=0; j<4; j++){
1214 av_freep(&buf->base[j]);
1215 buf->data[j]= NULL;
1216 }
1217 }
1218 av_freep(&s->internal_buffer);
1219
1220 s->internal_buffer_count=0;
1221}
1222
d8085ea7
MN
1223char av_get_pict_type_char(int pict_type){
1224 switch(pict_type){
1225 case I_TYPE: return 'I';
1226 case P_TYPE: return 'P';
1227 case B_TYPE: return 'B';
1228 case S_TYPE: return 'S';
1229 case SI_TYPE:return 'i';
1230 case SP_TYPE:return 'p';
1231 default: return '?';
1232 }
1233}
1234
9b879566
MB
1235/* av_log API */
1236
e18c1f19 1237static int av_log_level = AV_LOG_INFO;
9b879566 1238
bc874dae 1239static void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
9b879566 1240{
89b9441a 1241 static int print_prefix=1;
43465395 1242 AVClass* avc= ptr ? *(AVClass**)ptr : NULL;
9b879566 1243 if(level>av_log_level)
bc874dae 1244 return;
d705e4a6 1245#undef fprintf
43465395
MN
1246 if(print_prefix && avc) {
1247 fprintf(stderr, "[%s @ %p]", avc->item_name(ptr), avc);
bc874dae 1248 }
d705e4a6 1249#define fprintf please_use_av_log
89b9441a 1250
95ba2c8f 1251 print_prefix= strstr(fmt, "\n") != NULL;
89b9441a 1252
9b879566
MB
1253 vfprintf(stderr, fmt, vl);
1254}
1255
bc874dae 1256static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback;
9b879566 1257
bc874dae 1258void av_log(void* avcl, int level, const char *fmt, ...)
9b879566
MB
1259{
1260 va_list vl;
1261 va_start(vl, fmt);
bc874dae 1262 av_vlog(avcl, level, fmt, vl);
9b879566
MB
1263 va_end(vl);
1264}
1265
bc874dae 1266void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
9b879566 1267{
bc874dae 1268 av_log_callback(avcl, level, fmt, vl);
9b879566
MB
1269}
1270
1271int av_log_get_level(void)
1272{
1273 return av_log_level;
1274}
1275
1276void av_log_set_level(int level)
1277{
1278 av_log_level = level;
1279}
1280
bc874dae 1281void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))
9b879566
MB
1282{
1283 av_log_callback = callback;
1284}
1285
2450cff2 1286#if !defined(HAVE_THREADS)
ca8ad847
MN
1287int avcodec_thread_init(AVCodecContext *s, int thread_count){
1288 return -1;
1289}
1290#endif
ad2b531d
MR
1291
1292unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1293{
1294 unsigned int n = 0;
1295
1296 while(v >= 0xff) {
1297 *s++ = 0xff;
1298 v -= 0xff;
1299 n++;
1300 }
1301 *s = v;
1302 n++;
1303 return n;
1304}