Another AVhwaccel hunk from Gwenole Beauchesne.
[libav.git] / libavcodec / utils.c
CommitLineData
de6d9b64
FB
1/*
2 * utils for libavcodec
406792e7 3 * Copyright (c) 2001 Fabrice Bellard
8f2ab833 4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
de6d9b64 5 *
b78e7197
DB
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
ff4ec49e
FB
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
b78e7197 11 * version 2.1 of the License, or (at your option) any later version.
de6d9b64 12 *
b78e7197 13 * FFmpeg is distributed in the hope that it will be useful,
de6d9b64 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
ff4ec49e
FB
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
de6d9b64 17 *
ff4ec49e 18 * You should have received a copy of the GNU Lesser General Public
b78e7197 19 * License along with FFmpeg; if not, write to the Free Software
5509bffa 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
de6d9b64 21 */
115329f1 22
983e3246 23/**
bad5537e 24 * @file libavcodec/utils.c
983e3246
MN
25 * utils.
26 */
115329f1 27
7246177d 28/* needed for mkstemp() */
d0feff2a 29#define _XOPEN_SOURCE 600
7246177d 30
7fb94406 31#include "libavutil/avstring.h"
245976da
DB
32#include "libavutil/integer.h"
33#include "libavutil/crc.h"
de6d9b64 34#include "avcodec.h"
3123dd79 35#include "dsputil.h"
6fd46414 36#include "opt.h"
db7ae7d1 37#include "imgconvert.h"
9e82a113 38#include "audioconvert.h"
0ba39dd1 39#include "internal.h"
7246177d 40#include <stdlib.h>
9b879566 41#include <stdarg.h>
4c263142 42#include <limits.h>
860a40c8 43#include <float.h>
b250f9c6 44#if !HAVE_MKSTEMP
1005f542
CH
45#include <fcntl.h>
46#endif
de6d9b64 47
44608ac7
RG
48const uint8_t ff_reverse[256]={
490x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
500x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
510x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
520x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
530x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
540x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
550x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
560x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
570x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
580x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
590x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
600x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
610x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
620x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
630x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
640x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
65};
66
ddebfb15
MN
67static int volatile entangled_thread_counter=0;
68
5c91a675 69void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
8e1e6f31 70{
115329f1 71 if(min_size < *size)
8e1e6f31 72 return ptr;
115329f1 73
0ecca7a4 74 *size= FFMAX(17*min_size/16 + 32, min_size);
8e1e6f31 75
978805b2
MN
76 ptr= av_realloc(ptr, *size);
77 if(!ptr) //we could set this to the unmodified min_size but this is safer if the user lost the ptr and uses NULL now
78 *size= 0;
79
80 return ptr;
8e1e6f31
FB
81}
82
de6d9b64 83/* encoder management */
e6df765e 84static AVCodec *first_avcodec = NULL;
de6d9b64 85
55b9e69a
MN
86AVCodec *av_codec_next(AVCodec *c){
87 if(c) return c->next;
88 else return first_avcodec;
89}
90
85662f49 91void avcodec_register(AVCodec *codec)
de6d9b64
FB
92{
93 AVCodec **p;
7a961a46 94 avcodec_init();
de6d9b64
FB
95 p = &first_avcodec;
96 while (*p != NULL) p = &(*p)->next;
335a761a
SS
97 *p = codec;
98 codec->next = NULL;
de6d9b64
FB
99}
100
9d385cfe 101#if LIBAVCODEC_VERSION_MAJOR < 53
85662f49
SS
102void register_avcodec(AVCodec *codec)
103{
104 avcodec_register(codec);
105}
9d385cfe 106#endif
85662f49 107
21adafec
MN
108void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
109 s->coded_width = width;
110 s->coded_height= height;
111 s->width = -((-width )>>s->lowres);
112 s->height= -((-height)>>s->lowres);
113}
114
d90cf87b 115typedef struct InternalBuffer{
1e491e29 116 int last_pic_num;
d90cf87b 117 uint8_t *base[4];
1e491e29 118 uint8_t *data[4];
237e4938 119 int linesize[4];
0701006e
MN
120 int width, height;
121 enum PixelFormat pix_fmt;
d90cf87b
MN
122}InternalBuffer;
123
124#define INTERNAL_BUFFER_SIZE 32
1e491e29 125
f0bbfc4a
MN
126#define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
127
128void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
115329f1
DB
129 int w_align= 1;
130 int h_align= 1;
131
f0bbfc4a
MN
132 switch(s->pix_fmt){
133 case PIX_FMT_YUV420P:
71e445fc 134 case PIX_FMT_YUYV422:
ebb177dd 135 case PIX_FMT_UYVY422:
f0bbfc4a
MN
136 case PIX_FMT_YUV422P:
137 case PIX_FMT_YUV444P:
138 case PIX_FMT_GRAY8:
34380af0
KS
139 case PIX_FMT_GRAY16BE:
140 case PIX_FMT_GRAY16LE:
f0bbfc4a
MN
141 case PIX_FMT_YUVJ420P:
142 case PIX_FMT_YUVJ422P:
143 case PIX_FMT_YUVJ444P:
b70335a2 144 case PIX_FMT_YUVA420P:
f0bbfc4a
MN
145 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
146 h_align= 16;
147 break;
148 case PIX_FMT_YUV411P:
71e445fc 149 case PIX_FMT_UYYVYY411:
f0bbfc4a
MN
150 w_align=32;
151 h_align=8;
152 break;
153 case PIX_FMT_YUV410P:
154 if(s->codec_id == CODEC_ID_SVQ1){
155 w_align=64;
156 h_align=64;
157 }
d99fbbf4
RT
158 case PIX_FMT_RGB555:
159 if(s->codec_id == CODEC_ID_RPZA){
160 w_align=4;
161 h_align=4;
162 }
163 case PIX_FMT_PAL8:
6337178b
MN
164 case PIX_FMT_BGR8:
165 case PIX_FMT_RGB8:
d99fbbf4
RT
166 if(s->codec_id == CODEC_ID_SMC){
167 w_align=4;
168 h_align=4;
169 }
f0bbfc4a 170 break;
c31b8121
RT
171 case PIX_FMT_BGR24:
172 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
173 w_align=4;
174 h_align=4;
175 }
176 break;
f0bbfc4a
MN
177 default:
178 w_align= 1;
179 h_align= 1;
180 break;
181 }
182
183 *width = ALIGN(*width , w_align);
184 *height= ALIGN(*height, h_align);
ae4ffe9f
MN
185 if(s->codec_id == CODEC_ID_H264)
186 *height+=2; // some of the optimized chroma MC reads one line too much
f0bbfc4a
MN
187}
188
0ecca7a4
MN
189int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
190 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
191 return 0;
115329f1 192
0ecca7a4
MN
193 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
194 return -1;
195}
196
492cd3a9 197int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
1e491e29 198 int i;
f0bbfc4a
MN
199 int w= s->width;
200 int h= s->height;
d90cf87b 201 InternalBuffer *buf;
237e4938 202 int *picture_number;
0ecca7a4 203
65d999d6
MB
204 if(pic->data[0]!=NULL) {
205 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
206 return -1;
207 }
208 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
209 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
210 return -1;
211 }
1e491e29 212
0ecca7a4
MN
213 if(avcodec_check_dimensions(s,w,h))
214 return -1;
215
d90cf87b 216 if(s->internal_buffer==NULL){
6ebc89ac 217 s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
d90cf87b
MN
218 }
219#if 0
220 s->internal_buffer= av_fast_realloc(
115329f1
DB
221 s->internal_buffer,
222 &s->internal_buffer_size,
d90cf87b
MN
223 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
224 );
225#endif
115329f1 226
d90cf87b 227 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
6ebc89ac 228 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
237e4938 229 (*picture_number)++;
115329f1 230
0701006e
MN
231 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
232 for(i=0; i<4; i++){
233 av_freep(&buf->base[i]);
234 buf->data[i]= NULL;
235 }
236 }
237
d90cf87b 238 if(buf->base[0]){
237e4938
MN
239 pic->age= *picture_number - buf->last_pic_num;
240 buf->last_pic_num= *picture_number;
1e491e29 241 }else{
f0bbfc4a 242 int h_chroma_shift, v_chroma_shift;
db7ae7d1
VS
243 int size[4] = {0};
244 int tmpsize;
c7622f9a 245 AVPicture picture;
503bc402 246 int stride_align[4];
c7622f9a 247
1e491e29 248 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
f0bbfc4a
MN
249
250 avcodec_align_dimensions(s, &w, &h);
115329f1 251
1e491e29
MN
252 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
253 w+= EDGE_WIDTH*2;
254 h+= EDGE_WIDTH*2;
255 }
5b67307a 256
db7ae7d1
VS
257 ff_fill_linesize(&picture, s->pix_fmt, w);
258
503bc402
MN
259 for (i=0; i<4; i++){
260//STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
261//we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
262//picture size unneccessarily in some cases. The solution here is not
263//pretty and better ideas are welcome!
b250f9c6 264#if HAVE_MMX
503bc402
MN
265 if(s->codec_id == CODEC_ID_SVQ1)
266 stride_align[i]= 16;
267 else
268#endif
269 stride_align[i] = STRIDE_ALIGN;
270 picture.linesize[i] = ALIGN(picture.linesize[i], stride_align[i]);
271 }
db7ae7d1 272
db7ae7d1 273 tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h);
f8c96d01
RD
274 if (tmpsize < 0)
275 return -1;
db7ae7d1
VS
276
277 for (i=0; i<3 && picture.data[i+1]; i++)
278 size[i] = picture.data[i+1] - picture.data[i];
cf73e32a 279 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
c7622f9a 280
d90cf87b 281 buf->last_pic_num= -256*256*256*64;
c7622f9a
MN
282 memset(buf->base, 0, sizeof(buf->base));
283 memset(buf->data, 0, sizeof(buf->data));
1e491e29 284
b70335a2 285 for(i=0; i<4 && size[i]; i++){
2c19981a
MN
286 const int h_shift= i==0 ? 0 : h_chroma_shift;
287 const int v_shift= i==0 ? 0 : v_chroma_shift;
1e491e29 288
c7622f9a 289 buf->linesize[i]= picture.linesize[i];
1e491e29 290
c7622f9a 291 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
d90cf87b 292 if(buf->base[i]==NULL) return -1;
c7622f9a
MN
293 memset(buf->base[i], 128, size[i]);
294
6337178b
MN
295 // no edge if EDEG EMU or not planar YUV
296 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
d90cf87b 297 buf->data[i] = buf->base[i];
1e491e29 298 else
503bc402 299 buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
1e491e29 300 }
6337178b
MN
301 if(size[1] && !size[2])
302 ff_set_systematic_pal((uint32_t*)buf->data[1], s->pix_fmt);
0701006e
MN
303 buf->width = s->width;
304 buf->height = s->height;
305 buf->pix_fmt= s->pix_fmt;
1e491e29
MN
306 pic->age= 256*256*256*64;
307 }
237e4938 308 pic->type= FF_BUFFER_TYPE_INTERNAL;
1e491e29 309
d90cf87b
MN
310 for(i=0; i<4; i++){
311 pic->base[i]= buf->base[i];
312 pic->data[i]= buf->data[i];
237e4938 313 pic->linesize[i]= buf->linesize[i];
d90cf87b
MN
314 }
315 s->internal_buffer_count++;
316
79de84f2
MN
317 pic->reordered_opaque= s->reordered_opaque;
318
385c820b
AS
319 if(s->debug&FF_DEBUG_BUFFERS)
320 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
321
1e491e29
MN
322 return 0;
323}
324
492cd3a9 325void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
1e491e29 326 int i;
6829ac8d 327 InternalBuffer *buf, *last;
d90cf87b 328
4e00e76b 329 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
59c673d5 330 assert(s->internal_buffer_count);
d90cf87b 331
b1609412 332 buf = NULL; /* avoids warning */
d90cf87b
MN
333 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
334 buf= &((InternalBuffer*)s->internal_buffer)[i];
335 if(buf->data[0] == pic->data[0])
336 break;
337 }
338 assert(i < s->internal_buffer_count);
339 s->internal_buffer_count--;
340 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
341
6829ac8d 342 FFSWAP(InternalBuffer, *buf, *last);
d90cf87b 343
b70335a2 344 for(i=0; i<4; i++){
1e491e29 345 pic->data[i]=NULL;
d90cf87b
MN
346// pic->base[i]=NULL;
347 }
1e491e29 348//printf("R%X\n", pic->opaque);
385c820b
AS
349
350 if(s->debug&FF_DEBUG_BUFFERS)
351 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
1e491e29
MN
352}
353
e1c2a5a0
RT
354int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
355 AVFrame temp_pic;
356 int i;
357
358 /* If no picture return a new buffer */
359 if(pic->data[0] == NULL) {
360 /* We will copy from buffer, so must be readable */
361 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
362 return s->get_buffer(s, pic);
363 }
364
365 /* If internal buffer type return the same buffer */
366 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
367 return 0;
368
369 /*
370 * Not internal type and reget_buffer not overridden, emulate cr buffer
371 */
372 temp_pic = *pic;
373 for(i = 0; i < 4; i++)
374 pic->data[i] = pic->base[i] = NULL;
375 pic->opaque = NULL;
376 /* Allocate new frame */
377 if (s->get_buffer(s, pic))
378 return -1;
379 /* Copy image data from old buffer to new buffer */
636d6a4a 380 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
e1c2a5a0
RT
381 s->height);
382 s->release_buffer(s, &temp_pic); // Release old frame
383 return 0;
384}
385
3a84713a 386int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
9c3d33d6
MN
387 int i;
388
389 for(i=0; i<count; i++){
3a84713a 390 int r= func(c, (char*)arg + i*size);
9c3d33d6
MN
391 if(ret) ret[i]= r;
392 }
393 return 0;
394}
395
c269cf68
MN
396enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
397 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
398 ++fmt;
a33c7159
MN
399 return fmt[0];
400}
401
9740beff
MN
402void avcodec_get_frame_defaults(AVFrame *pic){
403 memset(pic, 0, sizeof(AVFrame));
404
405 pic->pts= AV_NOPTS_VALUE;
c342499d 406 pic->key_frame= 1;
9740beff
MN
407}
408
492cd3a9 409AVFrame *avcodec_alloc_frame(void){
9740beff 410 AVFrame *pic= av_malloc(sizeof(AVFrame));
115329f1 411
9740beff 412 if(pic==NULL) return NULL;
115329f1 413
9740beff 414 avcodec_get_frame_defaults(pic);
115329f1 415
1e491e29
MN
416 return pic;
417}
418
5e4c7ca2 419int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
de6d9b64 420{
ddebfb15 421 int ret= -1;
115329f1 422
ddebfb15
MN
423 entangled_thread_counter++;
424 if(entangled_thread_counter != 1){
425 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
426 goto end;
427 }
de6d9b64 428
9c87b8f7 429 if(avctx->codec || !codec)
ddebfb15 430 goto end;
09770af8 431
0edf8a7a
PG
432 if (codec->priv_data_size > 0) {
433 avctx->priv_data = av_mallocz(codec->priv_data_size);
90f06cea
PI
434 if (!avctx->priv_data) {
435 ret = AVERROR(ENOMEM);
ddebfb15 436 goto end;
90f06cea 437 }
0edf8a7a
PG
438 } else {
439 avctx->priv_data = NULL;
440 }
21adafec
MN
441
442 if(avctx->coded_width && avctx->coded_height)
443 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
444 else if(avctx->width && avctx->height)
445 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
446
0ecca7a4
MN
447 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
448 av_freep(&avctx->priv_data);
7868349a 449 ret = AVERROR(EINVAL);
ddebfb15 450 goto end;
0ecca7a4
MN
451 }
452
b5c85991
MN
453 avctx->codec = codec;
454 avctx->codec_id = codec->id;
455 avctx->frame_number = 0;
6e546aaa 456 if(avctx->codec->init){
2de4f9eb
MN
457 ret = avctx->codec->init(avctx);
458 if (ret < 0) {
459 av_freep(&avctx->priv_data);
460 avctx->codec= NULL;
461 goto end;
462 }
6e546aaa 463 }
ddebfb15
MN
464 ret=0;
465end:
466 entangled_thread_counter--;
467 return ret;
de6d9b64
FB
468}
469
5e4c7ca2 470int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64
FB
471 const short *samples)
472{
0ecca7a4 473 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
5286d11f 474 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
0ecca7a4
MN
475 return -1;
476 }
6f824977 477 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
8eb027c8 478 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
6f824977
MN
479 avctx->frame_number++;
480 return ret;
481 }else
482 return 0;
de6d9b64
FB
483}
484
5e4c7ca2 485int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 486 const AVFrame *pict)
de6d9b64 487{
0ecca7a4 488 if(buf_size < FF_MIN_BUFFER_SIZE){
5286d11f 489 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
0ecca7a4
MN
490 return -1;
491 }
492 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
493 return -1;
6f824977 494 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
8eb027c8 495 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
6f824977 496 avctx->frame_number++;
bb628dae 497 emms_c(); //needed to avoid an emms_c() call before every return;
115329f1 498
6f824977
MN
499 return ret;
500 }else
501 return 0;
de6d9b64
FB
502}
503
115329f1 504int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
240c1657
FB
505 const AVSubtitle *sub)
506{
507 int ret;
9413db9e
BA
508 if(sub->start_display_time) {
509 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
510 return -1;
511 }
505aa6c9
BA
512 if(sub->num_rects == 0 || !sub->rects)
513 return -1;
8eb027c8 514 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
240c1657
FB
515 avctx->frame_number++;
516 return ret;
517}
518
5e4c7ca2 519int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 520 int *got_picture_ptr,
2efa7fd1 521 const uint8_t *buf, int buf_size)
de6d9b64
FB
522{
523 int ret;
115329f1 524
53db1cae 525 *got_picture_ptr= 0;
0ecca7a4
MN
526 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
527 return -1;
934982c4 528 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
115329f1 529 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
934982c4 530 buf, buf_size);
6bb925f4 531
bb628dae 532 emms_c(); //needed to avoid an emms_c() call before every return;
115329f1
DB
533
534 if (*got_picture_ptr)
934982c4
MN
535 avctx->frame_number++;
536 }else
537 ret= 0;
538
de6d9b64
FB
539 return ret;
540}
541
5e4c7ca2 542int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
de6d9b64 543 int *frame_size_ptr,
2efa7fd1 544 const uint8_t *buf, int buf_size)
de6d9b64
FB
545{
546 int ret;
547
fec9ccb7 548 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
9c856d62
MN
549 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
550 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
551 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
552 return -1;
553 }
554 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
81fc2f37 555 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
9c856d62
MN
556 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
557 return -1;
558 }
559
115329f1 560 ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
fec9ccb7
MN
561 buf, buf_size);
562 avctx->frame_number++;
ac66834c 563 }else{
fec9ccb7 564 ret= 0;
ac66834c
MN
565 *frame_size_ptr=0;
566 }
de6d9b64
FB
567 return ret;
568}
569
240c1657
FB
570int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
571 int *got_sub_ptr,
572 const uint8_t *buf, int buf_size)
573{
574 int ret;
575
576 *got_sub_ptr = 0;
115329f1 577 ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
0431d3b1 578 buf, buf_size);
240c1657
FB
579 if (*got_sub_ptr)
580 avctx->frame_number++;
581 return ret;
582}
583
de6d9b64
FB
584int avcodec_close(AVCodecContext *avctx)
585{
ddebfb15
MN
586 entangled_thread_counter++;
587 if(entangled_thread_counter != 1){
588 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
589 entangled_thread_counter--;
590 return -1;
591 }
592
49fb20cb 593 if (HAVE_THREADS && avctx->thread_opaque)
ab2cfc59 594 avcodec_thread_free(avctx);
de6d9b64
FB
595 if (avctx->codec->close)
596 avctx->codec->close(avctx);
eea8c08f 597 avcodec_default_free_buffers(avctx);
3123dd79 598 av_freep(&avctx->priv_data);
de6d9b64 599 avctx->codec = NULL;
ddebfb15 600 entangled_thread_counter--;
de6d9b64
FB
601 return 0;
602}
603
604AVCodec *avcodec_find_encoder(enum CodecID id)
605{
606 AVCodec *p;
607 p = first_avcodec;
608 while (p) {
609 if (p->encode != NULL && p->id == id)
610 return p;
611 p = p->next;
612 }
613 return NULL;
614}
615
98f3b098
A
616AVCodec *avcodec_find_encoder_by_name(const char *name)
617{
618 AVCodec *p;
fc228c90
AJ
619 if (!name)
620 return NULL;
98f3b098
A
621 p = first_avcodec;
622 while (p) {
623 if (p->encode != NULL && strcmp(name,p->name) == 0)
624 return p;
625 p = p->next;
626 }
627 return NULL;
628}
629
de6d9b64
FB
630AVCodec *avcodec_find_decoder(enum CodecID id)
631{
632 AVCodec *p;
633 p = first_avcodec;
634 while (p) {
635 if (p->decode != NULL && p->id == id)
636 return p;
637 p = p->next;
638 }
639 return NULL;
640}
641
642AVCodec *avcodec_find_decoder_by_name(const char *name)
643{
644 AVCodec *p;
fc228c90
AJ
645 if (!name)
646 return NULL;
de6d9b64
FB
647 p = first_avcodec;
648 while (p) {
649 if (p->decode != NULL && strcmp(name,p->name) == 0)
650 return p;
651 p = p->next;
652 }
653 return NULL;
654}
655
de6d9b64
FB
656void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
657{
658 const char *codec_name;
659 AVCodec *p;
660 char buf1[32];
a96b68b7 661 int bitrate;
59771f71 662 AVRational display_aspect_ratio;
de6d9b64
FB
663
664 if (encode)
665 p = avcodec_find_encoder(enc->codec_id);
666 else
667 p = avcodec_find_decoder(enc->codec_id);
668
669 if (p) {
670 codec_name = p->name;
985180a1
FB
671 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
672 /* fake mpeg2 transport stream codec (currently not
673 registered) */
674 codec_name = "mpeg2ts";
de6d9b64
FB
675 } else if (enc->codec_name[0] != '\0') {
676 codec_name = enc->codec_name;
677 } else {
678 /* output avi tags */
115329f1 679 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
b983a5c6 680 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
115329f1 681 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
de6d9b64
FB
682 enc->codec_tag & 0xff,
683 (enc->codec_tag >> 8) & 0xff,
684 (enc->codec_tag >> 16) & 0xff,
b983a5c6
MN
685 (enc->codec_tag >> 24) & 0xff,
686 enc->codec_tag);
de6d9b64
FB
687 } else {
688 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
689 }
690 codec_name = buf1;
691 }
692
693 switch(enc->codec_type) {
694 case CODEC_TYPE_VIDEO:
695 snprintf(buf, buf_size,
696 "Video: %s%s",
7d1c3fc1 697 codec_name, enc->mb_decision ? " (hq)" : "");
82c0c4ba 698 if (enc->pix_fmt != PIX_FMT_NONE) {
cf087595
FB
699 snprintf(buf + strlen(buf), buf_size - strlen(buf),
700 ", %s",
9bbffbb1 701 avcodec_get_pix_fmt_name(enc->pix_fmt));
cf087595 702 }
de6d9b64
FB
703 if (enc->width) {
704 snprintf(buf + strlen(buf), buf_size - strlen(buf),
21189011
MN
705 ", %dx%d",
706 enc->width, enc->height);
7ee4dd02 707 if (enc->sample_aspect_ratio.num) {
cbaf50f8
BC
708 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
709 enc->width*enc->sample_aspect_ratio.num,
710 enc->height*enc->sample_aspect_ratio.den,
711 1024*1024);
712 snprintf(buf + strlen(buf), buf_size - strlen(buf),
713 " [PAR %d:%d DAR %d:%d]",
714 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
715 display_aspect_ratio.num, display_aspect_ratio.den);
7ee4dd02 716 }
a309073b 717 if(av_log_get_level() >= AV_LOG_DEBUG){
9ce6c138 718 int g= av_gcd(enc->time_base.num, enc->time_base.den);
21189011
MN
719 snprintf(buf + strlen(buf), buf_size - strlen(buf),
720 ", %d/%d",
721 enc->time_base.num/g, enc->time_base.den/g);
722 }
de6d9b64 723 }
4bfad535
FB
724 if (encode) {
725 snprintf(buf + strlen(buf), buf_size - strlen(buf),
726 ", q=%d-%d", enc->qmin, enc->qmax);
727 }
a96b68b7 728 bitrate = enc->bit_rate;
de6d9b64
FB
729 break;
730 case CODEC_TYPE_AUDIO:
731 snprintf(buf, buf_size,
732 "Audio: %s",
733 codec_name);
734 if (enc->sample_rate) {
735 snprintf(buf + strlen(buf), buf_size - strlen(buf),
0d72e7d0 736 ", %d Hz", enc->sample_rate);
de6d9b64 737 }
0d72e7d0
PR
738 av_strlcat(buf, ", ", buf_size);
739 avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
9e82a113
PR
740 if (enc->sample_fmt != SAMPLE_FMT_NONE) {
741 snprintf(buf + strlen(buf), buf_size - strlen(buf),
742 ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt));
743 }
115329f1 744
a96b68b7
FB
745 /* for PCM codecs, compute bitrate directly */
746 switch(enc->codec_id) {
143a5d6f
PR
747 case CODEC_ID_PCM_F64BE:
748 case CODEC_ID_PCM_F64LE:
749 bitrate = enc->sample_rate * enc->channels * 64;
750 break;
b461b3bc
RD
751 case CODEC_ID_PCM_S32LE:
752 case CODEC_ID_PCM_S32BE:
753 case CODEC_ID_PCM_U32LE:
754 case CODEC_ID_PCM_U32BE:
aa29709e 755 case CODEC_ID_PCM_F32BE:
143a5d6f 756 case CODEC_ID_PCM_F32LE:
b461b3bc
RD
757 bitrate = enc->sample_rate * enc->channels * 32;
758 break;
759 case CODEC_ID_PCM_S24LE:
760 case CODEC_ID_PCM_S24BE:
761 case CODEC_ID_PCM_U24LE:
762 case CODEC_ID_PCM_U24BE:
763 case CODEC_ID_PCM_S24DAUD:
764 bitrate = enc->sample_rate * enc->channels * 24;
765 break;
a96b68b7
FB
766 case CODEC_ID_PCM_S16LE:
767 case CODEC_ID_PCM_S16BE:
725d86bf 768 case CODEC_ID_PCM_S16LE_PLANAR:
a96b68b7
FB
769 case CODEC_ID_PCM_U16LE:
770 case CODEC_ID_PCM_U16BE:
a190b7e9 771 bitrate = enc->sample_rate * enc->channels * 16;
a96b68b7
FB
772 break;
773 case CODEC_ID_PCM_S8:
774 case CODEC_ID_PCM_U8:
775 case CODEC_ID_PCM_ALAW:
776 case CODEC_ID_PCM_MULAW:
9d49b8ff 777 case CODEC_ID_PCM_ZORK:
a190b7e9 778 bitrate = enc->sample_rate * enc->channels * 8;
a96b68b7
FB
779 break;
780 default:
781 bitrate = enc->bit_rate;
782 break;
783 }
de6d9b64 784 break;
985180a1
FB
785 case CODEC_TYPE_DATA:
786 snprintf(buf, buf_size, "Data: %s", codec_name);
240c1657
FB
787 bitrate = enc->bit_rate;
788 break;
789 case CODEC_TYPE_SUBTITLE:
790 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
985180a1
FB
791 bitrate = enc->bit_rate;
792 break;
f8d7c9d3
ES
793 case CODEC_TYPE_ATTACHMENT:
794 snprintf(buf, buf_size, "Attachment: %s", codec_name);
795 bitrate = enc->bit_rate;
796 break;
de6d9b64 797 default:
9fe5a7b8
MN
798 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
799 return;
de6d9b64 800 }
4bfad535
FB
801 if (encode) {
802 if (enc->flags & CODEC_FLAG_PASS1)
803 snprintf(buf + strlen(buf), buf_size - strlen(buf),
804 ", pass 1");
805 if (enc->flags & CODEC_FLAG_PASS2)
806 snprintf(buf + strlen(buf), buf_size - strlen(buf),
807 ", pass 2");
808 }
a96b68b7 809 if (bitrate != 0) {
115329f1 810 snprintf(buf + strlen(buf), buf_size - strlen(buf),
a96b68b7 811 ", %d kb/s", bitrate / 1000);
de6d9b64
FB
812 }
813}
814
156e5023
NK
815unsigned avcodec_version( void )
816{
817 return LIBAVCODEC_VERSION_INT;
818}
cf087595 819
de6d9b64
FB
820void avcodec_init(void)
821{
5e534865 822 static int initialized = 0;
0344cd0a 823
5e534865 824 if (initialized != 0)
bb270c08 825 return;
5e534865 826 initialized = 1;
0344cd0a 827
486497e0 828 dsputil_static_init();
de6d9b64
FB
829}
830
1c2a8c7f
MN
831void avcodec_flush_buffers(AVCodecContext *avctx)
832{
7a06ff14
MN
833 if(avctx->codec->flush)
834 avctx->codec->flush(avctx);
1c2a8c7f
MN
835}
836
b100eab8 837void avcodec_default_free_buffers(AVCodecContext *s){
d90cf87b
MN
838 int i, j;
839
840 if(s->internal_buffer==NULL) return;
115329f1 841
d90cf87b
MN
842 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
843 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
844 for(j=0; j<4; j++){
845 av_freep(&buf->base[j]);
846 buf->data[j]= NULL;
847 }
848 }
849 av_freep(&s->internal_buffer);
115329f1 850
d90cf87b
MN
851 s->internal_buffer_count=0;
852}
853
d8085ea7
MN
854char av_get_pict_type_char(int pict_type){
855 switch(pict_type){
fbd4293d
AJ
856 case FF_I_TYPE: return 'I';
857 case FF_P_TYPE: return 'P';
858 case FF_B_TYPE: return 'B';
859 case FF_S_TYPE: return 'S';
860 case FF_SI_TYPE:return 'i';
861 case FF_SP_TYPE:return 'p';
48d533e6 862 case FF_BI_TYPE:return 'b';
c06ccb13 863 default: return '?';
d8085ea7
MN
864 }
865}
866
ac3e1834
BC
867int av_get_bits_per_sample(enum CodecID codec_id){
868 switch(codec_id){
5da71469 869 case CODEC_ID_ADPCM_SBPRO_2:
f1b163e0 870 return 2;
5da71469 871 case CODEC_ID_ADPCM_SBPRO_3:
f1b163e0 872 return 3;
5da71469 873 case CODEC_ID_ADPCM_SBPRO_4:
f1b163e0
AJ
874 case CODEC_ID_ADPCM_CT:
875 return 4;
ac3e1834
BC
876 case CODEC_ID_PCM_ALAW:
877 case CODEC_ID_PCM_MULAW:
878 case CODEC_ID_PCM_S8:
879 case CODEC_ID_PCM_U8:
9d49b8ff 880 case CODEC_ID_PCM_ZORK:
ac3e1834
BC
881 return 8;
882 case CODEC_ID_PCM_S16BE:
883 case CODEC_ID_PCM_S16LE:
725d86bf 884 case CODEC_ID_PCM_S16LE_PLANAR:
ac3e1834
BC
885 case CODEC_ID_PCM_U16BE:
886 case CODEC_ID_PCM_U16LE:
887 return 16;
888 case CODEC_ID_PCM_S24DAUD:
889 case CODEC_ID_PCM_S24BE:
890 case CODEC_ID_PCM_S24LE:
891 case CODEC_ID_PCM_U24BE:
892 case CODEC_ID_PCM_U24LE:
893 return 24;
894 case CODEC_ID_PCM_S32BE:
895 case CODEC_ID_PCM_S32LE:
896 case CODEC_ID_PCM_U32BE:
897 case CODEC_ID_PCM_U32LE:
aa29709e 898 case CODEC_ID_PCM_F32BE:
143a5d6f 899 case CODEC_ID_PCM_F32LE:
ac3e1834 900 return 32;
143a5d6f
PR
901 case CODEC_ID_PCM_F64BE:
902 case CODEC_ID_PCM_F64LE:
903 return 64;
ac3e1834
BC
904 default:
905 return 0;
906 }
907}
908
42c71907
DC
909int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
910 switch (sample_fmt) {
911 case SAMPLE_FMT_U8:
912 return 8;
913 case SAMPLE_FMT_S16:
914 return 16;
42c71907
DC
915 case SAMPLE_FMT_S32:
916 case SAMPLE_FMT_FLT:
917 return 32;
e06b00f3
PR
918 case SAMPLE_FMT_DBL:
919 return 64;
42c71907
DC
920 default:
921 return 0;
922 }
923}
924
b250f9c6 925#if !HAVE_THREADS
ca8ad847
MN
926int avcodec_thread_init(AVCodecContext *s, int thread_count){
927 return -1;
928}
929#endif
ad2b531d
MR
930
931unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
932{
933 unsigned int n = 0;
934
935 while(v >= 0xff) {
936 *s++ = 0xff;
937 v -= 0xff;
938 n++;
939 }
940 *s = v;
941 n++;
942 return n;
943}
1005f542
CH
944
945/* Wrapper to work around the lack of mkstemp() on mingw/cygin.
946 * Also, tries to create file in /tmp first, if possible.
947 * *prefix can be a character constant; *filename will be allocated internally.
948 * Returns file descriptor of opened file (or -1 on error)
949 * and opened file name in **filename. */
950int av_tempfile(char *prefix, char **filename) {
951 int fd=-1;
b250f9c6 952#if !HAVE_MKSTEMP
1005f542
CH
953 *filename = tempnam(".", prefix);
954#else
955 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
f2508b17 956 *filename = av_malloc(len);
1005f542
CH
957#endif
958 /* -----common section-----*/
959 if (*filename == NULL) {
960 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
961 return -1;
962 }
b250f9c6 963#if !HAVE_MKSTEMP
76353b42 964 fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
1005f542
CH
965#else
966 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
967 fd = mkstemp(*filename);
968 if (fd < 0) {
969 snprintf(*filename, len, "./%sXXXXXX", prefix);
970 fd = mkstemp(*filename);
971 }
972#endif
973 /* -----common section-----*/
974 if (fd < 0) {
975 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
976 return -1;
977 }
978 return fd; /* success */
979}
26ef3220
SS
980
981typedef struct {
c0ad72a7 982 const char *abbr;
26ef3220 983 int width, height;
c0ad72a7
SS
984} VideoFrameSizeAbbr;
985
986typedef struct {
987 const char *abbr;
988 int rate_num, rate_den;
989} VideoFrameRateAbbr;
990
cf2baeb3 991static const VideoFrameSizeAbbr video_frame_size_abbrs[] = {
c0ad72a7
SS
992 { "ntsc", 720, 480 },
993 { "pal", 720, 576 },
994 { "qntsc", 352, 240 }, /* VCD compliant NTSC */
995 { "qpal", 352, 288 }, /* VCD compliant PAL */
996 { "sntsc", 640, 480 }, /* square pixel NTSC */
997 { "spal", 768, 576 }, /* square pixel PAL */
998 { "film", 352, 240 },
999 { "ntsc-film", 352, 240 },
1000 { "sqcif", 128, 96 },
1001 { "qcif", 176, 144 },
1002 { "cif", 352, 288 },
1003 { "4cif", 704, 576 },
1004 { "qqvga", 160, 120 },
1005 { "qvga", 320, 240 },
1006 { "vga", 640, 480 },
1007 { "svga", 800, 600 },
1008 { "xga", 1024, 768 },
1009 { "uxga", 1600,1200 },
1010 { "qxga", 2048,1536 },
1011 { "sxga", 1280,1024 },
1012 { "qsxga", 2560,2048 },
1013 { "hsxga", 5120,4096 },
1014 { "wvga", 852, 480 },
1015 { "wxga", 1366, 768 },
1016 { "wsxga", 1600,1024 },
1017 { "wuxga", 1920,1200 },
1018 { "woxga", 2560,1600 },
1019 { "wqsxga", 3200,2048 },
1020 { "wquxga", 3840,2400 },
1021 { "whsxga", 6400,4096 },
1022 { "whuxga", 7680,4800 },
1023 { "cga", 320, 200 },
1024 { "ega", 640, 350 },
1025 { "hd480", 852, 480 },
1026 { "hd720", 1280, 720 },
1027 { "hd1080", 1920,1080 },
1028};
1029
cf2baeb3 1030static const VideoFrameRateAbbr video_frame_rate_abbrs[]= {
c0ad72a7
SS
1031 { "ntsc", 30000, 1001 },
1032 { "pal", 25, 1 },
1033 { "qntsc", 30000, 1001 }, /* VCD compliant NTSC */
1034 { "qpal", 25, 1 }, /* VCD compliant PAL */
1035 { "sntsc", 30000, 1001 }, /* square pixel NTSC */
1036 { "spal", 25, 1 }, /* square pixel PAL */
1037 { "film", 24, 1 },
1038 { "ntsc-film", 24000, 1001 },
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1039};
1040
1041int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1042{
1043 int i;
37d3e066 1044 int n = FF_ARRAY_ELEMS(video_frame_size_abbrs);
8468664b 1045 char *p;
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1046 int frame_width = 0, frame_height = 0;
1047
1048 for(i=0;i<n;i++) {
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1049 if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {
1050 frame_width = video_frame_size_abbrs[i].width;
1051 frame_height = video_frame_size_abbrs[i].height;
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1052 break;
1053 }
1054 }
1055 if (i == n) {
1056 p = str;
8468664b 1057 frame_width = strtol(p, &p, 10);
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1058 if (*p)
1059 p++;
8468664b 1060 frame_height = strtol(p, &p, 10);
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1061 }
1062 if (frame_width <= 0 || frame_height <= 0)
1063 return -1;
1064 *width_ptr = frame_width;
1065 *height_ptr = frame_height;
1066 return 0;
1067}
1068
1069int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1070{
1071 int i;
37d3e066 1072 int n = FF_ARRAY_ELEMS(video_frame_rate_abbrs);
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1073 char* cp;
1074
1075 /* First, we check our abbreviation table */
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1076 for (i = 0; i < n; ++i)
1077 if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {
1078 frame_rate->num = video_frame_rate_abbrs[i].rate_num;
1079 frame_rate->den = video_frame_rate_abbrs[i].rate_den;
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1080 return 0;
1081 }
1082
1083 /* Then, we try to parse it as fraction */
1084 cp = strchr(arg, '/');
1085 if (!cp)
1086 cp = strchr(arg, ':');
1087 if (cp) {
1088 char* cpp;
1089 frame_rate->num = strtol(arg, &cpp, 10);
1090 if (cpp != arg || cpp == cp)
1091 frame_rate->den = strtol(cp+1, &cpp, 10);
1092 else
1093 frame_rate->num = 0;
1094 }
1095 else {
1096 /* Finally we give up and parse it as double */
38360668 1097 AVRational time_base = av_d2q(strtod(arg, 0), 1001000);
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1098 frame_rate->den = time_base.den;
1099 frame_rate->num = time_base.num;
1100 }
1101 if (!frame_rate->num || !frame_rate->den)
1102 return -1;
1103 else
1104 return 0;
1105}
ea779d91 1106
dbbec0c2 1107void ff_log_missing_feature(void *avc, const char *feature, int want_sample)
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1108{
1109 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1110 "version to the newest one from SVN. If the problem still "
1111 "occurs, it means that your file has a feature which has not "
1112 "been implemented.", feature);
1113 if(want_sample)
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1114 ff_log_ask_for_sample(avc, NULL);
1115 else
1116 av_log(avc, AV_LOG_WARNING, "\n");
1117}
1118
1119void ff_log_ask_for_sample(void *avc, const char *msg)
1120{
1121 if (msg)
1122 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1123 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1124 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1125 "and contact the ffmpeg-devel mailing list.\n");
ea779d91 1126}