checksum doesnt cover the forward_ptr anymore
[libav.git] / libavcodec / utils.c
CommitLineData
de6d9b64
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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 *
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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
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
de6d9b64 16 *
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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 */
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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"
9b879566 31#include <stdarg.h>
4c263142 32#include <limits.h>
860a40c8 33#include <float.h>
de6d9b64 34
44608ac7
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35const uint8_t ff_reverse[256]={
360x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
370x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
380x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
390x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
400x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
410x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
420x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
430x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
440x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
450x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
460x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
470x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
480x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
490x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
500x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
510x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
52};
53
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54static int volatile entangled_thread_counter=0;
55
b100eab8 56void avcodec_default_free_buffers(AVCodecContext *s);
eea8c08f 57
18f77016 58void *av_mallocz(unsigned int size)
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59{
60 void *ptr;
5b20b732 61
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62 ptr = av_malloc(size);
63 if (!ptr)
64 return NULL;
65 memset(ptr, 0, size);
66 return ptr;
67}
68
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69char *av_strdup(const char *s)
70{
71 char *ptr;
72 int len;
73 len = strlen(s) + 1;
74 ptr = av_malloc(len);
75 if (!ptr)
76 return NULL;
77 memcpy(ptr, s, len);
78 return ptr;
79}
80
81/**
82 * realloc which does nothing if the block is large enough
83 */
5c91a675 84void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
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85{
86 if(min_size < *size)
87 return ptr;
88
0ecca7a4 89 *size= FFMAX(17*min_size/16 + 32, min_size);
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90
91 return av_realloc(ptr, *size);
92}
93
94
855ea723 95static unsigned int last_static = 0;
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96static unsigned int allocated_static = 0;
97static void** array_static = NULL;
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98
99/**
100 * allocation of static arrays - do not use for normal allocation.
101 */
102void *av_mallocz_static(unsigned int size)
855ea723 103{
855ea723 104 void *ptr = av_mallocz(size);
855ea723 105
8d1f2ba5 106 if(ptr){
4e39ab4c 107 array_static =av_fast_realloc(array_static, &allocated_static, sizeof(void*)*(last_static+1));
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108 if(!array_static)
109 return NULL;
8d1f2ba5 110 array_static[last_static++] = ptr;
855ea723 111 }
8d1f2ba5 112
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113 return ptr;
114}
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115
116/**
073c2593
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117 * same as above, but does realloc
118 */
119
120void *av_realloc_static(void *ptr, unsigned int size)
121{
122 int i;
123 if(!ptr)
124 return av_mallocz_static(size);
125 /* Look for the old ptr */
126 for(i = 0; i < last_static; i++) {
127 if(array_static[i] == ptr) {
128 array_static[i] = av_realloc(array_static[i], size);
129 return array_static[i];
130 }
131 }
132 return NULL;
133
134}
135
136/**
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137 * free all static arrays and reset pointers to 0.
138 */
4cfbf61b 139void av_free_static(void)
855ea723 140{
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141 while(last_static){
142 av_freep(&array_static[--last_static]);
855ea723 143 }
8d1f2ba5 144 av_freep(&array_static);
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145}
146
81c5f887 147/**
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148 * Call av_free_static automatically before it's too late
149 */
150
151static void do_free() __attribute__ ((destructor));
152
153static void do_free()
154{
155 av_free_static();
156}
157
158/**
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159 * Frees memory and sets the pointer to NULL.
160 * @param arg pointer to the pointer which should be freed
161 */
162void av_freep(void *arg)
4d7a0a05 163{
81c5f887 164 void **ptr= (void**)arg;
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165 av_free(*ptr);
166 *ptr = NULL;
167}
168
de6d9b64 169/* encoder management */
8b69867f 170AVCodec *first_avcodec = NULL;
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171
172void register_avcodec(AVCodec *format)
173{
174 AVCodec **p;
175 p = &first_avcodec;
176 while (*p != NULL) p = &(*p)->next;
177 *p = format;
178 format->next = NULL;
179}
180
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181void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
182 s->coded_width = width;
183 s->coded_height= height;
184 s->width = -((-width )>>s->lowres);
185 s->height= -((-height)>>s->lowres);
186}
187
d90cf87b 188typedef struct InternalBuffer{
1e491e29 189 int last_pic_num;
d90cf87b 190 uint8_t *base[4];
1e491e29 191 uint8_t *data[4];
237e4938 192 int linesize[4];
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193}InternalBuffer;
194
195#define INTERNAL_BUFFER_SIZE 32
1e491e29 196
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197#define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
198
199void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
200 int w_align= 1;
201 int h_align= 1;
202
203 switch(s->pix_fmt){
204 case PIX_FMT_YUV420P:
205 case PIX_FMT_YUV422:
ebb177dd 206 case PIX_FMT_UYVY422:
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207 case PIX_FMT_YUV422P:
208 case PIX_FMT_YUV444P:
209 case PIX_FMT_GRAY8:
210 case PIX_FMT_YUVJ420P:
211 case PIX_FMT_YUVJ422P:
212 case PIX_FMT_YUVJ444P:
213 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
214 h_align= 16;
215 break;
216 case PIX_FMT_YUV411P:
f02be79d 217 case PIX_FMT_UYVY411:
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218 w_align=32;
219 h_align=8;
220 break;
221 case PIX_FMT_YUV410P:
222 if(s->codec_id == CODEC_ID_SVQ1){
223 w_align=64;
224 h_align=64;
225 }
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226 case PIX_FMT_RGB555:
227 if(s->codec_id == CODEC_ID_RPZA){
228 w_align=4;
229 h_align=4;
230 }
231 case PIX_FMT_PAL8:
232 if(s->codec_id == CODEC_ID_SMC){
233 w_align=4;
234 h_align=4;
235 }
f0bbfc4a 236 break;
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237 case PIX_FMT_BGR24:
238 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
239 w_align=4;
240 h_align=4;
241 }
242 break;
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243 default:
244 w_align= 1;
245 h_align= 1;
246 break;
247 }
248
249 *width = ALIGN(*width , w_align);
250 *height= ALIGN(*height, h_align);
251}
252
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253int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
254 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
255 return 0;
256
257 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
258 return -1;
259}
260
492cd3a9 261int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
1e491e29 262 int i;
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263 int w= s->width;
264 int h= s->height;
d90cf87b 265 InternalBuffer *buf;
237e4938 266 int *picture_number;
0ecca7a4 267
4e00e76b 268 assert(pic->data[0]==NULL);
d90cf87b 269 assert(INTERNAL_BUFFER_SIZE > s->internal_buffer_count);
1e491e29 270
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271 if(avcodec_check_dimensions(s,w,h))
272 return -1;
273
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274 if(s->internal_buffer==NULL){
275 s->internal_buffer= av_mallocz(INTERNAL_BUFFER_SIZE*sizeof(InternalBuffer));
276 }
277#if 0
278 s->internal_buffer= av_fast_realloc(
279 s->internal_buffer,
280 &s->internal_buffer_size,
281 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
282 );
283#endif
284
285 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
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286 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE-1]).last_pic_num; //FIXME ugly hack
287 (*picture_number)++;
288
d90cf87b 289 if(buf->base[0]){
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290 pic->age= *picture_number - buf->last_pic_num;
291 buf->last_pic_num= *picture_number;
1e491e29 292 }else{
f0bbfc4a 293 int h_chroma_shift, v_chroma_shift;
3237f731 294 int pixel_size;
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295
296 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
f0bbfc4a 297
1e491e29 298 switch(s->pix_fmt){
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299 case PIX_FMT_RGB555:
300 case PIX_FMT_RGB565:
1e491e29 301 case PIX_FMT_YUV422:
ebb177dd 302 case PIX_FMT_UYVY422:
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303 pixel_size=2;
304 break;
305 case PIX_FMT_RGB24:
306 case PIX_FMT_BGR24:
307 pixel_size=3;
308 break;
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309 case PIX_FMT_RGBA32:
310 pixel_size=4;
311 break;
312 default:
313 pixel_size=1;
314 }
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315
316 avcodec_align_dimensions(s, &w, &h);
f0bbfc4a 317
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318 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
319 w+= EDGE_WIDTH*2;
320 h+= EDGE_WIDTH*2;
321 }
322
d90cf87b 323 buf->last_pic_num= -256*256*256*64;
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324
325 for(i=0; i<3; i++){
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326 const int h_shift= i==0 ? 0 : h_chroma_shift;
327 const int v_shift= i==0 ? 0 : v_chroma_shift;
1e491e29 328
7984082a 329 //FIXME next ensures that linesize= 2^x uvlinesize, thats needed because some MC code assumes it
3237f731 330 buf->linesize[i]= ALIGN(pixel_size*w>>h_shift, STRIDE_ALIGN<<(h_chroma_shift-h_shift));
1e491e29 331
f41c1fac 332 buf->base[i]= av_malloc((buf->linesize[i]*h>>v_shift)+16); //FIXME 16
d90cf87b 333 if(buf->base[i]==NULL) return -1;
237e4938 334 memset(buf->base[i], 128, buf->linesize[i]*h>>v_shift);
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335
336 if(s->flags&CODEC_FLAG_EMU_EDGE)
d90cf87b 337 buf->data[i] = buf->base[i];
1e491e29 338 else
3237f731 339 buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);
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340 }
341 pic->age= 256*256*256*64;
342 }
237e4938 343 pic->type= FF_BUFFER_TYPE_INTERNAL;
1e491e29 344
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345 for(i=0; i<4; i++){
346 pic->base[i]= buf->base[i];
347 pic->data[i]= buf->data[i];
237e4938 348 pic->linesize[i]= buf->linesize[i];
d90cf87b
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349 }
350 s->internal_buffer_count++;
351
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352 return 0;
353}
354
492cd3a9 355void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
1e491e29 356 int i;
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357 InternalBuffer *buf, *last, temp;
358
4e00e76b 359 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
59c673d5 360 assert(s->internal_buffer_count);
d90cf87b 361
b1609412 362 buf = NULL; /* avoids warning */
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363 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
364 buf= &((InternalBuffer*)s->internal_buffer)[i];
365 if(buf->data[0] == pic->data[0])
366 break;
367 }
368 assert(i < s->internal_buffer_count);
369 s->internal_buffer_count--;
370 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
371
372 temp= *buf;
373 *buf= *last;
374 *last= temp;
375
376 for(i=0; i<3; i++){
1e491e29 377 pic->data[i]=NULL;
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378// pic->base[i]=NULL;
379 }
1e491e29
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380//printf("R%X\n", pic->opaque);
381}
382
e1c2a5a0
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383int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
384 AVFrame temp_pic;
385 int i;
386
387 /* If no picture return a new buffer */
388 if(pic->data[0] == NULL) {
389 /* We will copy from buffer, so must be readable */
390 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
391 return s->get_buffer(s, pic);
392 }
393
394 /* If internal buffer type return the same buffer */
395 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
396 return 0;
397
398 /*
399 * Not internal type and reget_buffer not overridden, emulate cr buffer
400 */
401 temp_pic = *pic;
402 for(i = 0; i < 4; i++)
403 pic->data[i] = pic->base[i] = NULL;
404 pic->opaque = NULL;
405 /* Allocate new frame */
406 if (s->get_buffer(s, pic))
407 return -1;
408 /* Copy image data from old buffer to new buffer */
409 img_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
410 s->height);
411 s->release_buffer(s, &temp_pic); // Release old frame
412 return 0;
413}
414
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415int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){
416 int i;
417
418 for(i=0; i<count; i++){
419 int r= func(c, arg[i]);
420 if(ret) ret[i]= r;
421 }
422 return 0;
423}
424
494c56d3 425enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
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426 return fmt[0];
427}
428
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429static const char* context_to_name(void* ptr) {
430 AVCodecContext *avc= ptr;
431
432 if(avc && avc->codec && avc->codec->name)
433 return avc->codec->name;
434 else
435 return "NULL";
436}
437
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438#define OFFSET(x) (int)&((AVCodecContext*)0)->x
439#define DEFAULT 0 //should be NAN but it doesnt work as its not a constant in glibc as required by ANSI/ISO C
440
441static AVOption options[]={
442{"bit_rate", NULL, OFFSET(bit_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
443{"bit_rate_tolerance", NULL, OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
444{"flags", NULL, OFFSET(flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
445{"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
446{"me_method", NULL, OFFSET(me_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
447{"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
448{"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
449{"gop_size", NULL, OFFSET(gop_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
450{"rate_emu", NULL, OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
451{"sample_rate", NULL, OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
452{"channels", NULL, OFFSET(channels), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
453{"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
454{"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
455{"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
456{"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
457{"qcompress", NULL, OFFSET(qcompress), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
458{"qblur", NULL, OFFSET(qblur), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
459{"qmin", NULL, OFFSET(qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
460{"qmax", NULL, OFFSET(qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
461{"max_qdiff", NULL, OFFSET(max_qdiff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
462{"max_b_frames", NULL, OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
463{"b_quant_factor", NULL, OFFSET(b_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
464{"rc_strategy", NULL, OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
465{"b_frame_strategy", NULL, OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
466{"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
467{"rtp_mode", NULL, OFFSET(rtp_mode), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
468{"rtp_payload_size", NULL, OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
469{"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
470{"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
471{"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
472{"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
473{"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
474{"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
475{"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
476{"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
477{"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
478{"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
479{"workaround_bugs", NULL, OFFSET(workaround_bugs), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
480{"luma_elim_threshold", NULL, OFFSET(luma_elim_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
481{"chroma_elim_threshold", NULL, OFFSET(chroma_elim_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
482{"strict_std_compliance", NULL, OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
483{"b_quant_offset", NULL, OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
484{"error_resilience", NULL, OFFSET(error_resilience), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
485{"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
486{"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
487{"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
488{"mpeg_quant", NULL, OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
489{"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
490{"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
491{"rc_qsquish", NULL, OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
492{"rc_qmod_amp", NULL, OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
493{"rc_qmod_freq", NULL, OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
494{"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
495{"rc_eq", NULL, OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
496{"rc_max_rate", NULL, OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
497{"rc_min_rate", NULL, OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
498{"rc_buffer_size", NULL, OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
499{"rc_buffer_aggressivity", NULL, OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
500{"i_quant_factor", NULL, OFFSET(i_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
501{"i_quant_offset", NULL, OFFSET(i_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
502{"rc_initial_cplx", NULL, OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
503{"dct_algo", NULL, OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
504{"lumi_masking", NULL, OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
505{"temporal_cplx_masking", NULL, OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
506{"spatial_cplx_masking", NULL, OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
507{"p_masking", NULL, OFFSET(p_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
508{"dark_masking", NULL, OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
509{"unused", NULL, OFFSET(unused), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
510{"idct_algo", NULL, OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
511{"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
512{"error_concealment", NULL, OFFSET(error_concealment), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
513{"bits_per_sample", NULL, OFFSET(bits_per_sample), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
514{"prediction_method", NULL, OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
515{"sample_aspect_ratio", NULL, OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
516{"debug", NULL, OFFSET(debug), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
517{"debug_mv", NULL, OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
518{"mb_qmin", NULL, OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
519{"mb_qmax", NULL, OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
520{"me_cmp", NULL, OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
521{"me_sub_cmp", NULL, OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
522{"mb_cmp", NULL, OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
523{"ildct_cmp", NULL, OFFSET(ildct_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
524{"dia_size", NULL, OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
525{"last_predictor_count", NULL, OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
526{"pre_me", NULL, OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
527{"me_pre_cmp", NULL, OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
528{"pre_dia_size", NULL, OFFSET(pre_dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
529{"me_subpel_quality", NULL, OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
530{"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
531{"me_range", NULL, OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
532{"intra_quant_bias", NULL, OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
533{"inter_quant_bias", NULL, OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
534{"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
535{"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
536{"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
537{"coder_type", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
538{"context_model", NULL, OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
539{"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
540{"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
541{"mb_decision", NULL, OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
542{"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
543{"scenechange_threshold", NULL, OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
544{"lmin", NULL, OFFSET(lmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
545{"lmax", NULL, OFFSET(lmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
546{"noise_reduction", NULL, OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
547{"rc_initial_buffer_occupancy", NULL, OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
548{"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
549{"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
550{"error_rate", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
551{"antialias_algo", NULL, OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
552{"quantizer_noise_shaping", NULL, OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
553{"thread_count", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
554{"me_threshold", NULL, OFFSET(me_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
555{"mb_threshold", NULL, OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
556{"intra_dc_precision", NULL, OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
557{"nsse_weight", NULL, OFFSET(nsse_weight), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
558{"skip_top", NULL, OFFSET(skip_top), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
559{"skip_bottom", NULL, OFFSET(skip_bottom), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
560{"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
561{"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
562{"lowres", NULL, OFFSET(lowres), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
563{"frame_skip_threshold", NULL, OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
564{"frame_skip_factor", NULL, OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
565{"frame_skip_exp", NULL, OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
566{"frame_skip_cmp", NULL, OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
567{"border_masking", NULL, OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
568{"mb_lmin", NULL, OFFSET(mb_lmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
569{"mb_lmax", NULL, OFFSET(mb_lmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
570{"me_penalty_compensation", NULL, OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
571{NULL},
572};
573
574static AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options };
43465395 575
a949d72e 576void avcodec_get_context_defaults(AVCodecContext *s){
9740beff
MN
577 memset(s, 0, sizeof(AVCodecContext));
578
43465395 579 s->av_class= &av_codec_context_class;
e8b62df6
MN
580 s->bit_rate= 800*1000;
581 s->bit_rate_tolerance= s->bit_rate*10;
a949d72e
MN
582 s->qmin= 2;
583 s->qmax= 31;
6e0d8c06
MN
584 s->mb_lmin= FF_QP2LAMBDA * 2;
585 s->mb_lmax= FF_QP2LAMBDA * 31;
a949d72e
MN
586 s->rc_eq= "tex^qComp";
587 s->qcompress= 0.5;
e8b62df6
MN
588 s->max_qdiff= 3;
589 s->b_quant_factor=1.25;
590 s->b_quant_offset=1.25;
b3a391e8 591 s->i_quant_factor=-0.8;
e8b62df6 592 s->i_quant_offset=0.0;
4d2858de 593 s->error_concealment= 3;
8d0e42ca 594 s->error_resilience= 1;
4d2858de 595 s->workaround_bugs= FF_BUG_AUTODETECT;
c0df9d75 596 s->time_base= (AVRational){0,1};
8d0e42ca
MN
597 s->gop_size= 50;
598 s->me_method= ME_EPZS;
1e491e29
MN
599 s->get_buffer= avcodec_default_get_buffer;
600 s->release_buffer= avcodec_default_release_buffer;
a33c7159 601 s->get_format= avcodec_default_get_format;
9c3d33d6
MN
602 s->execute= avcodec_default_execute;
603 s->thread_count=1;
826f429a 604 s->me_subpel_quality=8;
158c7f05
MN
605 s->lmin= FF_QP2LAMBDA * s->qmin;
606 s->lmax= FF_QP2LAMBDA * s->qmax;
5ff85f1d 607 s->sample_aspect_ratio= (AVRational){0,1};
620fe604 608 s->ildct_cmp= FF_CMP_VSAD;
baced9f5
MN
609 s->profile= FF_PROFILE_UNKNOWN;
610 s->level= FF_LEVEL_UNKNOWN;
09c3e44e 611 s->me_penalty_compensation= 256;
644a9262 612 s->pix_fmt= PIX_FMT_NONE;
1984f635
MN
613
614 s->intra_quant_bias= FF_DEFAULT_QUANT_BIAS;
615 s->inter_quant_bias= FF_DEFAULT_QUANT_BIAS;
2a2bbcb0 616 s->palctrl = NULL;
e1c2a5a0 617 s->reget_buffer= avcodec_default_reget_buffer;
a949d72e
MN
618}
619
620/**
621 * allocates a AVCodecContext and set it to defaults.
622 * this can be deallocated by simply calling free()
623 */
7ffbb60e 624AVCodecContext *avcodec_alloc_context(void){
9740beff 625 AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
a949d72e
MN
626
627 if(avctx==NULL) return NULL;
628
629 avcodec_get_context_defaults(avctx);
630
631 return avctx;
632}
633
9740beff
MN
634void avcodec_get_frame_defaults(AVFrame *pic){
635 memset(pic, 0, sizeof(AVFrame));
636
637 pic->pts= AV_NOPTS_VALUE;
c342499d 638 pic->key_frame= 1;
9740beff
MN
639}
640
1e491e29 641/**
492cd3a9 642 * allocates a AVPFrame and set it to defaults.
1e491e29
MN
643 * this can be deallocated by simply calling free()
644 */
492cd3a9 645AVFrame *avcodec_alloc_frame(void){
9740beff
MN
646 AVFrame *pic= av_malloc(sizeof(AVFrame));
647
648 if(pic==NULL) return NULL;
649
650 avcodec_get_frame_defaults(pic);
1e491e29
MN
651
652 return pic;
653}
654
de6d9b64
FB
655int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
656{
ddebfb15
MN
657 int ret= -1;
658
659 entangled_thread_counter++;
660 if(entangled_thread_counter != 1){
661 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
662 goto end;
663 }
de6d9b64 664
09770af8 665 if(avctx->codec)
ddebfb15 666 goto end;
09770af8 667
de6d9b64 668 avctx->codec = codec;
4cb3ca72 669 avctx->codec_id = codec->id;
de6d9b64 670 avctx->frame_number = 0;
0edf8a7a
PG
671 if (codec->priv_data_size > 0) {
672 avctx->priv_data = av_mallocz(codec->priv_data_size);
673 if (!avctx->priv_data)
ddebfb15 674 goto end;
0edf8a7a
PG
675 } else {
676 avctx->priv_data = NULL;
677 }
21adafec
MN
678
679 if(avctx->coded_width && avctx->coded_height)
680 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
681 else if(avctx->width && avctx->height)
682 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
683
0ecca7a4
MN
684 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
685 av_freep(&avctx->priv_data);
ddebfb15 686 goto end;
0ecca7a4
MN
687 }
688
de6d9b64
FB
689 ret = avctx->codec->init(avctx);
690 if (ret < 0) {
3123dd79 691 av_freep(&avctx->priv_data);
ddebfb15 692 goto end;
de6d9b64 693 }
ddebfb15
MN
694 ret=0;
695end:
696 entangled_thread_counter--;
697 return ret;
de6d9b64
FB
698}
699
0c1a9eda 700int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64
FB
701 const short *samples)
702{
0ecca7a4
MN
703 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
704 av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
705 return -1;
706 }
6f824977
MN
707 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
708 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
709 avctx->frame_number++;
710 return ret;
711 }else
712 return 0;
de6d9b64
FB
713}
714
0c1a9eda 715int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 716 const AVFrame *pict)
de6d9b64 717{
0ecca7a4
MN
718 if(buf_size < FF_MIN_BUFFER_SIZE){
719 av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
720 return -1;
721 }
722 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
723 return -1;
6f824977
MN
724 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
725 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
726 avctx->frame_number++;
bb628dae 727 emms_c(); //needed to avoid an emms_c() call before every return;
6bb925f4 728
6f824977
MN
729 return ret;
730 }else
731 return 0;
de6d9b64
FB
732}
733
240c1657
FB
734int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
735 const AVSubtitle *sub)
736{
737 int ret;
738 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);
739 avctx->frame_number++;
740 return ret;
741}
742
f138f883
MN
743/**
744 * decode a frame.
745 * @param buf bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE larger then the actual read bytes
746 * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
747 * @param buf_size the size of the buffer in bytes
748 * @param got_picture_ptr zero if no frame could be decompressed, Otherwise, it is non zero
749 * @return -1 if error, otherwise return the number of
750 * bytes used.
751 */
492cd3a9 752int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 753 int *got_picture_ptr,
0c1a9eda 754 uint8_t *buf, int buf_size)
de6d9b64
FB
755{
756 int ret;
1e491e29 757
53db1cae 758 *got_picture_ptr= 0;
0ecca7a4
MN
759 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
760 return -1;
934982c4
MN
761 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
762 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
763 buf, buf_size);
6bb925f4 764
bb628dae 765 emms_c(); //needed to avoid an emms_c() call before every return;
1e491e29 766
934982c4
MN
767 if (*got_picture_ptr)
768 avctx->frame_number++;
769 }else
770 ret= 0;
771
de6d9b64
FB
772 return ret;
773}
774
775/* decode an audio frame. return -1 if error, otherwise return the
776 *number of bytes used. If no frame could be decompressed,
777 *frame_size_ptr is zero. Otherwise, it is the decompressed frame
778 *size in BYTES. */
0c1a9eda 779int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 780 int *frame_size_ptr,
0c1a9eda 781 uint8_t *buf, int buf_size)
de6d9b64
FB
782{
783 int ret;
784
53db1cae 785 *frame_size_ptr= 0;
fec9ccb7
MN
786 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
787 ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
788 buf, buf_size);
789 avctx->frame_number++;
790 }else
791 ret= 0;
de6d9b64
FB
792 return ret;
793}
794
240c1657
FB
795/* decode a subtitle message. return -1 if error, otherwise return the
796 *number of bytes used. If no subtitle could be decompressed,
797 *got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
798int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
799 int *got_sub_ptr,
800 const uint8_t *buf, int buf_size)
801{
802 int ret;
803
804 *got_sub_ptr = 0;
805 ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
806 (uint8_t *)buf, buf_size);
807 if (*got_sub_ptr)
808 avctx->frame_number++;
809 return ret;
810}
811
de6d9b64
FB
812int avcodec_close(AVCodecContext *avctx)
813{
ddebfb15
MN
814 entangled_thread_counter++;
815 if(entangled_thread_counter != 1){
816 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
817 entangled_thread_counter--;
818 return -1;
819 }
820
de6d9b64
FB
821 if (avctx->codec->close)
822 avctx->codec->close(avctx);
eea8c08f 823 avcodec_default_free_buffers(avctx);
3123dd79 824 av_freep(&avctx->priv_data);
de6d9b64 825 avctx->codec = NULL;
ddebfb15 826 entangled_thread_counter--;
de6d9b64
FB
827 return 0;
828}
829
830AVCodec *avcodec_find_encoder(enum CodecID id)
831{
832 AVCodec *p;
833 p = first_avcodec;
834 while (p) {
835 if (p->encode != NULL && p->id == id)
836 return p;
837 p = p->next;
838 }
839 return NULL;
840}
841
98f3b098
A
842AVCodec *avcodec_find_encoder_by_name(const char *name)
843{
844 AVCodec *p;
845 p = first_avcodec;
846 while (p) {
847 if (p->encode != NULL && strcmp(name,p->name) == 0)
848 return p;
849 p = p->next;
850 }
851 return NULL;
852}
853
de6d9b64
FB
854AVCodec *avcodec_find_decoder(enum CodecID id)
855{
856 AVCodec *p;
857 p = first_avcodec;
858 while (p) {
859 if (p->decode != NULL && p->id == id)
860 return p;
861 p = p->next;
862 }
863 return NULL;
864}
865
866AVCodec *avcodec_find_decoder_by_name(const char *name)
867{
868 AVCodec *p;
869 p = first_avcodec;
870 while (p) {
871 if (p->decode != NULL && strcmp(name,p->name) == 0)
872 return p;
873 p = p->next;
874 }
875 return NULL;
876}
877
de6d9b64
FB
878void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
879{
880 const char *codec_name;
881 AVCodec *p;
882 char buf1[32];
623563c0 883 char channels_str[100];
a96b68b7 884 int bitrate;
de6d9b64
FB
885
886 if (encode)
887 p = avcodec_find_encoder(enc->codec_id);
888 else
889 p = avcodec_find_decoder(enc->codec_id);
890
891 if (p) {
892 codec_name = p->name;
98ce5991
FB
893 if (!encode && enc->codec_id == CODEC_ID_MP3) {
894 if (enc->sub_id == 2)
895 codec_name = "mp2";
896 else if (enc->sub_id == 1)
897 codec_name = "mp1";
898 }
985180a1
FB
899 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
900 /* fake mpeg2 transport stream codec (currently not
901 registered) */
902 codec_name = "mpeg2ts";
de6d9b64
FB
903 } else if (enc->codec_name[0] != '\0') {
904 codec_name = enc->codec_name;
905 } else {
906 /* output avi tags */
b983a5c6
MN
907 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
908 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
909 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
de6d9b64
FB
910 enc->codec_tag & 0xff,
911 (enc->codec_tag >> 8) & 0xff,
912 (enc->codec_tag >> 16) & 0xff,
b983a5c6
MN
913 (enc->codec_tag >> 24) & 0xff,
914 enc->codec_tag);
de6d9b64
FB
915 } else {
916 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
917 }
918 codec_name = buf1;
919 }
920
921 switch(enc->codec_type) {
922 case CODEC_TYPE_VIDEO:
923 snprintf(buf, buf_size,
924 "Video: %s%s",
7d1c3fc1 925 codec_name, enc->mb_decision ? " (hq)" : "");
82c0c4ba 926 if (enc->pix_fmt != PIX_FMT_NONE) {
cf087595
FB
927 snprintf(buf + strlen(buf), buf_size - strlen(buf),
928 ", %s",
9bbffbb1 929 avcodec_get_pix_fmt_name(enc->pix_fmt));
cf087595 930 }
de6d9b64
FB
931 if (enc->width) {
932 snprintf(buf + strlen(buf), buf_size - strlen(buf),
933 ", %dx%d, %0.2f fps",
934 enc->width, enc->height,
c0df9d75 935 1/av_q2d(enc->time_base));
de6d9b64 936 }
4bfad535
FB
937 if (encode) {
938 snprintf(buf + strlen(buf), buf_size - strlen(buf),
939 ", q=%d-%d", enc->qmin, enc->qmax);
940 }
a96b68b7 941 bitrate = enc->bit_rate;
de6d9b64
FB
942 break;
943 case CODEC_TYPE_AUDIO:
944 snprintf(buf, buf_size,
945 "Audio: %s",
946 codec_name);
e0d2714a
J
947 switch (enc->channels) {
948 case 1:
623563c0 949 strcpy(channels_str, "mono");
e0d2714a
J
950 break;
951 case 2:
623563c0 952 strcpy(channels_str, "stereo");
e0d2714a
J
953 break;
954 case 6:
623563c0 955 strcpy(channels_str, "5:1");
e0d2714a
J
956 break;
957 default:
2fc8ea24 958 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);
e0d2714a
J
959 break;
960 }
de6d9b64
FB
961 if (enc->sample_rate) {
962 snprintf(buf + strlen(buf), buf_size - strlen(buf),
963 ", %d Hz, %s",
964 enc->sample_rate,
e0d2714a 965 channels_str);
de6d9b64 966 }
e0d2714a 967
a96b68b7
FB
968 /* for PCM codecs, compute bitrate directly */
969 switch(enc->codec_id) {
b461b3bc
RD
970 case CODEC_ID_PCM_S32LE:
971 case CODEC_ID_PCM_S32BE:
972 case CODEC_ID_PCM_U32LE:
973 case CODEC_ID_PCM_U32BE:
974 bitrate = enc->sample_rate * enc->channels * 32;
975 break;
976 case CODEC_ID_PCM_S24LE:
977 case CODEC_ID_PCM_S24BE:
978 case CODEC_ID_PCM_U24LE:
979 case CODEC_ID_PCM_U24BE:
980 case CODEC_ID_PCM_S24DAUD:
981 bitrate = enc->sample_rate * enc->channels * 24;
982 break;
a96b68b7
FB
983 case CODEC_ID_PCM_S16LE:
984 case CODEC_ID_PCM_S16BE:
985 case CODEC_ID_PCM_U16LE:
986 case CODEC_ID_PCM_U16BE:
a190b7e9 987 bitrate = enc->sample_rate * enc->channels * 16;
a96b68b7
FB
988 break;
989 case CODEC_ID_PCM_S8:
990 case CODEC_ID_PCM_U8:
991 case CODEC_ID_PCM_ALAW:
992 case CODEC_ID_PCM_MULAW:
a190b7e9 993 bitrate = enc->sample_rate * enc->channels * 8;
a96b68b7
FB
994 break;
995 default:
996 bitrate = enc->bit_rate;
997 break;
998 }
de6d9b64 999 break;
985180a1
FB
1000 case CODEC_TYPE_DATA:
1001 snprintf(buf, buf_size, "Data: %s", codec_name);
240c1657
FB
1002 bitrate = enc->bit_rate;
1003 break;
1004 case CODEC_TYPE_SUBTITLE:
1005 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
985180a1
FB
1006 bitrate = enc->bit_rate;
1007 break;
de6d9b64 1008 default:
9fe5a7b8
MN
1009 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1010 return;
de6d9b64 1011 }
4bfad535
FB
1012 if (encode) {
1013 if (enc->flags & CODEC_FLAG_PASS1)
1014 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1015 ", pass 1");
1016 if (enc->flags & CODEC_FLAG_PASS2)
1017 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1018 ", pass 2");
1019 }
a96b68b7 1020 if (bitrate != 0) {
de6d9b64 1021 snprintf(buf + strlen(buf), buf_size - strlen(buf),
a96b68b7 1022 ", %d kb/s", bitrate / 1000);
de6d9b64
FB
1023 }
1024}
1025
156e5023
NK
1026unsigned avcodec_version( void )
1027{
1028 return LIBAVCODEC_VERSION_INT;
1029}
cf087595 1030
8bceb6af
NK
1031unsigned avcodec_build( void )
1032{
1033 return LIBAVCODEC_BUILD;
1034}
1035
de6d9b64
FB
1036/* must be called before any other functions */
1037void avcodec_init(void)
1038{
0344cd0a
AB
1039 static int inited = 0;
1040
1041 if (inited != 0)
1042 return;
1043 inited = 1;
1044
59cf08ce 1045 dsputil_static_init();
de6d9b64
FB
1046}
1047
7a06ff14
MN
1048/**
1049 * Flush buffers, should be called when seeking or when swicthing to a different stream.
1050 */
1c2a8c7f
MN
1051void avcodec_flush_buffers(AVCodecContext *avctx)
1052{
7a06ff14
MN
1053 if(avctx->codec->flush)
1054 avctx->codec->flush(avctx);
1c2a8c7f
MN
1055}
1056
b100eab8 1057void avcodec_default_free_buffers(AVCodecContext *s){
d90cf87b
MN
1058 int i, j;
1059
1060 if(s->internal_buffer==NULL) return;
1061
1062 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1063 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1064 for(j=0; j<4; j++){
1065 av_freep(&buf->base[j]);
1066 buf->data[j]= NULL;
1067 }
1068 }
1069 av_freep(&s->internal_buffer);
1070
1071 s->internal_buffer_count=0;
1072}
1073
d8085ea7
MN
1074char av_get_pict_type_char(int pict_type){
1075 switch(pict_type){
1076 case I_TYPE: return 'I';
1077 case P_TYPE: return 'P';
1078 case B_TYPE: return 'B';
1079 case S_TYPE: return 'S';
1080 case SI_TYPE:return 'i';
1081 case SP_TYPE:return 'p';
1082 default: return '?';
1083 }
1084}
1085
9b879566
MB
1086/* av_log API */
1087
e18c1f19 1088static int av_log_level = AV_LOG_INFO;
9b879566 1089
bc874dae 1090static void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
9b879566 1091{
89b9441a 1092 static int print_prefix=1;
43465395 1093 AVClass* avc= ptr ? *(AVClass**)ptr : NULL;
9b879566 1094 if(level>av_log_level)
bc874dae 1095 return;
d705e4a6 1096#undef fprintf
43465395
MN
1097 if(print_prefix && avc) {
1098 fprintf(stderr, "[%s @ %p]", avc->item_name(ptr), avc);
bc874dae 1099 }
d705e4a6 1100#define fprintf please_use_av_log
89b9441a 1101
95ba2c8f 1102 print_prefix= strstr(fmt, "\n") != NULL;
89b9441a 1103
9b879566
MB
1104 vfprintf(stderr, fmt, vl);
1105}
1106
bc874dae 1107static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback;
9b879566 1108
bc874dae 1109void av_log(void* avcl, int level, const char *fmt, ...)
9b879566
MB
1110{
1111 va_list vl;
1112 va_start(vl, fmt);
bc874dae 1113 av_vlog(avcl, level, fmt, vl);
9b879566
MB
1114 va_end(vl);
1115}
1116
bc874dae 1117void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
9b879566 1118{
bc874dae 1119 av_log_callback(avcl, level, fmt, vl);
9b879566
MB
1120}
1121
1122int av_log_get_level(void)
1123{
1124 return av_log_level;
1125}
1126
1127void av_log_set_level(int level)
1128{
1129 av_log_level = level;
1130}
1131
bc874dae 1132void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))
9b879566
MB
1133{
1134 av_log_callback = callback;
1135}
1136
2450cff2 1137#if !defined(HAVE_THREADS)
ca8ad847
MN
1138int avcodec_thread_init(AVCodecContext *s, int thread_count){
1139 return -1;
1140}
1141#endif
ad2b531d
MR
1142
1143unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1144{
1145 unsigned int n = 0;
1146
1147 while(v >= 0xff) {
1148 *s++ = 0xff;
1149 v -= 0xff;
1150 n++;
1151 }
1152 *s = v;
1153 n++;
1154 return n;
1155}