Move AVPacket up a bit, so that structs/functions that include AVPacket can
[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;
c9d6e847 245 int unaligned;
c7622f9a 246 AVPicture picture;
503bc402 247 int stride_align[4];
c7622f9a 248
1e491e29 249 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
f0bbfc4a
MN
250
251 avcodec_align_dimensions(s, &w, &h);
115329f1 252
1e491e29
MN
253 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
254 w+= EDGE_WIDTH*2;
255 h+= EDGE_WIDTH*2;
256 }
5b67307a 257
c9d6e847
RD
258 do {
259 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
260 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
45bae968 261 ff_fill_linesize(&picture, s->pix_fmt, w);
c9d6e847
RD
262 // increase alignment of w for next try (rhs gives the lowest bit set in w)
263 w += w & ~(w-1);
db7ae7d1 264
c9d6e847 265 unaligned = 0;
45bae968 266 for (i=0; i<4; i++){
503bc402
MN
267//STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
268//we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
269//picture size unneccessarily in some cases. The solution here is not
270//pretty and better ideas are welcome!
b250f9c6 271#if HAVE_MMX
45bae968
RD
272 if(s->codec_id == CODEC_ID_SVQ1)
273 stride_align[i]= 16;
274 else
503bc402 275#endif
45bae968 276 stride_align[i] = STRIDE_ALIGN;
c9d6e847 277 unaligned |= picture.linesize[i] % stride_align[i];
45bae968 278 }
c9d6e847 279 } while (unaligned);
db7ae7d1 280
db7ae7d1 281 tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h);
f8c96d01
RD
282 if (tmpsize < 0)
283 return -1;
db7ae7d1
VS
284
285 for (i=0; i<3 && picture.data[i+1]; i++)
286 size[i] = picture.data[i+1] - picture.data[i];
cf73e32a 287 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
c7622f9a 288
d90cf87b 289 buf->last_pic_num= -256*256*256*64;
c7622f9a
MN
290 memset(buf->base, 0, sizeof(buf->base));
291 memset(buf->data, 0, sizeof(buf->data));
1e491e29 292
b70335a2 293 for(i=0; i<4 && size[i]; i++){
2c19981a
MN
294 const int h_shift= i==0 ? 0 : h_chroma_shift;
295 const int v_shift= i==0 ? 0 : v_chroma_shift;
1e491e29 296
c7622f9a 297 buf->linesize[i]= picture.linesize[i];
1e491e29 298
c7622f9a 299 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
d90cf87b 300 if(buf->base[i]==NULL) return -1;
c7622f9a
MN
301 memset(buf->base[i], 128, size[i]);
302
6337178b
MN
303 // no edge if EDEG EMU or not planar YUV
304 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
d90cf87b 305 buf->data[i] = buf->base[i];
1e491e29 306 else
503bc402 307 buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
1e491e29 308 }
6337178b
MN
309 if(size[1] && !size[2])
310 ff_set_systematic_pal((uint32_t*)buf->data[1], s->pix_fmt);
0701006e
MN
311 buf->width = s->width;
312 buf->height = s->height;
313 buf->pix_fmt= s->pix_fmt;
1e491e29
MN
314 pic->age= 256*256*256*64;
315 }
237e4938 316 pic->type= FF_BUFFER_TYPE_INTERNAL;
1e491e29 317
d90cf87b
MN
318 for(i=0; i<4; i++){
319 pic->base[i]= buf->base[i];
320 pic->data[i]= buf->data[i];
237e4938 321 pic->linesize[i]= buf->linesize[i];
d90cf87b
MN
322 }
323 s->internal_buffer_count++;
324
79de84f2
MN
325 pic->reordered_opaque= s->reordered_opaque;
326
385c820b
AS
327 if(s->debug&FF_DEBUG_BUFFERS)
328 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
329
1e491e29
MN
330 return 0;
331}
332
492cd3a9 333void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
1e491e29 334 int i;
6829ac8d 335 InternalBuffer *buf, *last;
d90cf87b 336
4e00e76b 337 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
59c673d5 338 assert(s->internal_buffer_count);
d90cf87b 339
b1609412 340 buf = NULL; /* avoids warning */
d90cf87b
MN
341 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
342 buf= &((InternalBuffer*)s->internal_buffer)[i];
343 if(buf->data[0] == pic->data[0])
344 break;
345 }
346 assert(i < s->internal_buffer_count);
347 s->internal_buffer_count--;
348 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
349
6829ac8d 350 FFSWAP(InternalBuffer, *buf, *last);
d90cf87b 351
b70335a2 352 for(i=0; i<4; i++){
1e491e29 353 pic->data[i]=NULL;
d90cf87b
MN
354// pic->base[i]=NULL;
355 }
1e491e29 356//printf("R%X\n", pic->opaque);
385c820b
AS
357
358 if(s->debug&FF_DEBUG_BUFFERS)
359 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
1e491e29
MN
360}
361
e1c2a5a0
RT
362int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
363 AVFrame temp_pic;
364 int i;
365
366 /* If no picture return a new buffer */
367 if(pic->data[0] == NULL) {
368 /* We will copy from buffer, so must be readable */
369 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
370 return s->get_buffer(s, pic);
371 }
372
373 /* If internal buffer type return the same buffer */
374 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
375 return 0;
376
377 /*
378 * Not internal type and reget_buffer not overridden, emulate cr buffer
379 */
380 temp_pic = *pic;
381 for(i = 0; i < 4; i++)
382 pic->data[i] = pic->base[i] = NULL;
383 pic->opaque = NULL;
384 /* Allocate new frame */
385 if (s->get_buffer(s, pic))
386 return -1;
387 /* Copy image data from old buffer to new buffer */
636d6a4a 388 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
e1c2a5a0
RT
389 s->height);
390 s->release_buffer(s, &temp_pic); // Release old frame
391 return 0;
392}
393
3a84713a 394int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
9c3d33d6
MN
395 int i;
396
397 for(i=0; i<count; i++){
3a84713a 398 int r= func(c, (char*)arg + i*size);
9c3d33d6
MN
399 if(ret) ret[i]= r;
400 }
401 return 0;
402}
403
c269cf68
MN
404enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
405 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
406 ++fmt;
a33c7159
MN
407 return fmt[0];
408}
409
9740beff
MN
410void avcodec_get_frame_defaults(AVFrame *pic){
411 memset(pic, 0, sizeof(AVFrame));
412
413 pic->pts= AV_NOPTS_VALUE;
c342499d 414 pic->key_frame= 1;
9740beff
MN
415}
416
492cd3a9 417AVFrame *avcodec_alloc_frame(void){
9740beff 418 AVFrame *pic= av_malloc(sizeof(AVFrame));
115329f1 419
9740beff 420 if(pic==NULL) return NULL;
115329f1 421
9740beff 422 avcodec_get_frame_defaults(pic);
115329f1 423
1e491e29
MN
424 return pic;
425}
426
5e4c7ca2 427int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
de6d9b64 428{
ddebfb15 429 int ret= -1;
115329f1 430
ddebfb15
MN
431 entangled_thread_counter++;
432 if(entangled_thread_counter != 1){
433 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
434 goto end;
435 }
de6d9b64 436
9c87b8f7 437 if(avctx->codec || !codec)
ddebfb15 438 goto end;
09770af8 439
0edf8a7a
PG
440 if (codec->priv_data_size > 0) {
441 avctx->priv_data = av_mallocz(codec->priv_data_size);
90f06cea
PI
442 if (!avctx->priv_data) {
443 ret = AVERROR(ENOMEM);
ddebfb15 444 goto end;
90f06cea 445 }
0edf8a7a
PG
446 } else {
447 avctx->priv_data = NULL;
448 }
21adafec
MN
449
450 if(avctx->coded_width && avctx->coded_height)
451 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
452 else if(avctx->width && avctx->height)
453 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
454
0ecca7a4
MN
455 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
456 av_freep(&avctx->priv_data);
7868349a 457 ret = AVERROR(EINVAL);
ddebfb15 458 goto end;
0ecca7a4
MN
459 }
460
b5c85991
MN
461 avctx->codec = codec;
462 avctx->codec_id = codec->id;
463 avctx->frame_number = 0;
6e546aaa 464 if(avctx->codec->init){
2de4f9eb
MN
465 ret = avctx->codec->init(avctx);
466 if (ret < 0) {
467 av_freep(&avctx->priv_data);
468 avctx->codec= NULL;
469 goto end;
470 }
6e546aaa 471 }
ddebfb15
MN
472 ret=0;
473end:
474 entangled_thread_counter--;
475 return ret;
de6d9b64
FB
476}
477
5e4c7ca2 478int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64
FB
479 const short *samples)
480{
0ecca7a4 481 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
5286d11f 482 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
0ecca7a4
MN
483 return -1;
484 }
6f824977 485 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
8eb027c8 486 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
6f824977
MN
487 avctx->frame_number++;
488 return ret;
489 }else
490 return 0;
de6d9b64
FB
491}
492
5e4c7ca2 493int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 494 const AVFrame *pict)
de6d9b64 495{
0ecca7a4 496 if(buf_size < FF_MIN_BUFFER_SIZE){
5286d11f 497 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
0ecca7a4
MN
498 return -1;
499 }
500 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
501 return -1;
6f824977 502 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
8eb027c8 503 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
6f824977 504 avctx->frame_number++;
bb628dae 505 emms_c(); //needed to avoid an emms_c() call before every return;
115329f1 506
6f824977
MN
507 return ret;
508 }else
509 return 0;
de6d9b64
FB
510}
511
115329f1 512int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
240c1657
FB
513 const AVSubtitle *sub)
514{
515 int ret;
9413db9e
BA
516 if(sub->start_display_time) {
517 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
518 return -1;
519 }
505aa6c9
BA
520 if(sub->num_rects == 0 || !sub->rects)
521 return -1;
8eb027c8 522 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
240c1657
FB
523 avctx->frame_number++;
524 return ret;
525}
526
5e4c7ca2 527int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 528 int *got_picture_ptr,
2efa7fd1 529 const uint8_t *buf, int buf_size)
de6d9b64
FB
530{
531 int ret;
115329f1 532
53db1cae 533 *got_picture_ptr= 0;
0ecca7a4
MN
534 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
535 return -1;
934982c4 536 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
115329f1 537 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
934982c4 538 buf, buf_size);
6bb925f4 539
bb628dae 540 emms_c(); //needed to avoid an emms_c() call before every return;
115329f1
DB
541
542 if (*got_picture_ptr)
934982c4
MN
543 avctx->frame_number++;
544 }else
545 ret= 0;
546
de6d9b64
FB
547 return ret;
548}
549
5e4c7ca2 550int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
de6d9b64 551 int *frame_size_ptr,
2efa7fd1 552 const uint8_t *buf, int buf_size)
de6d9b64
FB
553{
554 int ret;
555
fec9ccb7 556 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
9c856d62
MN
557 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
558 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
559 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
560 return -1;
561 }
562 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
81fc2f37 563 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
9c856d62
MN
564 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
565 return -1;
566 }
567
115329f1 568 ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
fec9ccb7
MN
569 buf, buf_size);
570 avctx->frame_number++;
ac66834c 571 }else{
fec9ccb7 572 ret= 0;
ac66834c
MN
573 *frame_size_ptr=0;
574 }
de6d9b64
FB
575 return ret;
576}
577
240c1657
FB
578int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
579 int *got_sub_ptr,
580 const uint8_t *buf, int buf_size)
581{
582 int ret;
583
584 *got_sub_ptr = 0;
115329f1 585 ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
0431d3b1 586 buf, buf_size);
240c1657
FB
587 if (*got_sub_ptr)
588 avctx->frame_number++;
589 return ret;
590}
591
de6d9b64
FB
592int avcodec_close(AVCodecContext *avctx)
593{
ddebfb15
MN
594 entangled_thread_counter++;
595 if(entangled_thread_counter != 1){
596 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
597 entangled_thread_counter--;
598 return -1;
599 }
600
49fb20cb 601 if (HAVE_THREADS && avctx->thread_opaque)
ab2cfc59 602 avcodec_thread_free(avctx);
de6d9b64
FB
603 if (avctx->codec->close)
604 avctx->codec->close(avctx);
eea8c08f 605 avcodec_default_free_buffers(avctx);
3123dd79 606 av_freep(&avctx->priv_data);
de6d9b64 607 avctx->codec = NULL;
ddebfb15 608 entangled_thread_counter--;
de6d9b64
FB
609 return 0;
610}
611
612AVCodec *avcodec_find_encoder(enum CodecID id)
613{
614 AVCodec *p;
615 p = first_avcodec;
616 while (p) {
617 if (p->encode != NULL && p->id == id)
618 return p;
619 p = p->next;
620 }
621 return NULL;
622}
623
98f3b098
A
624AVCodec *avcodec_find_encoder_by_name(const char *name)
625{
626 AVCodec *p;
fc228c90
AJ
627 if (!name)
628 return NULL;
98f3b098
A
629 p = first_avcodec;
630 while (p) {
631 if (p->encode != NULL && strcmp(name,p->name) == 0)
632 return p;
633 p = p->next;
634 }
635 return NULL;
636}
637
de6d9b64
FB
638AVCodec *avcodec_find_decoder(enum CodecID id)
639{
640 AVCodec *p;
641 p = first_avcodec;
642 while (p) {
643 if (p->decode != NULL && p->id == id)
644 return p;
645 p = p->next;
646 }
647 return NULL;
648}
649
650AVCodec *avcodec_find_decoder_by_name(const char *name)
651{
652 AVCodec *p;
fc228c90
AJ
653 if (!name)
654 return NULL;
de6d9b64
FB
655 p = first_avcodec;
656 while (p) {
657 if (p->decode != NULL && strcmp(name,p->name) == 0)
658 return p;
659 p = p->next;
660 }
661 return NULL;
662}
663
de6d9b64
FB
664void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
665{
666 const char *codec_name;
667 AVCodec *p;
668 char buf1[32];
a96b68b7 669 int bitrate;
59771f71 670 AVRational display_aspect_ratio;
de6d9b64
FB
671
672 if (encode)
673 p = avcodec_find_encoder(enc->codec_id);
674 else
675 p = avcodec_find_decoder(enc->codec_id);
676
677 if (p) {
678 codec_name = p->name;
985180a1
FB
679 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
680 /* fake mpeg2 transport stream codec (currently not
681 registered) */
682 codec_name = "mpeg2ts";
de6d9b64
FB
683 } else if (enc->codec_name[0] != '\0') {
684 codec_name = enc->codec_name;
685 } else {
686 /* output avi tags */
115329f1 687 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
b983a5c6 688 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
115329f1 689 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
de6d9b64
FB
690 enc->codec_tag & 0xff,
691 (enc->codec_tag >> 8) & 0xff,
692 (enc->codec_tag >> 16) & 0xff,
b983a5c6
MN
693 (enc->codec_tag >> 24) & 0xff,
694 enc->codec_tag);
de6d9b64
FB
695 } else {
696 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
697 }
698 codec_name = buf1;
699 }
700
701 switch(enc->codec_type) {
702 case CODEC_TYPE_VIDEO:
703 snprintf(buf, buf_size,
704 "Video: %s%s",
7d1c3fc1 705 codec_name, enc->mb_decision ? " (hq)" : "");
82c0c4ba 706 if (enc->pix_fmt != PIX_FMT_NONE) {
cf087595
FB
707 snprintf(buf + strlen(buf), buf_size - strlen(buf),
708 ", %s",
9bbffbb1 709 avcodec_get_pix_fmt_name(enc->pix_fmt));
cf087595 710 }
de6d9b64
FB
711 if (enc->width) {
712 snprintf(buf + strlen(buf), buf_size - strlen(buf),
21189011
MN
713 ", %dx%d",
714 enc->width, enc->height);
7ee4dd02 715 if (enc->sample_aspect_ratio.num) {
cbaf50f8
BC
716 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
717 enc->width*enc->sample_aspect_ratio.num,
718 enc->height*enc->sample_aspect_ratio.den,
719 1024*1024);
720 snprintf(buf + strlen(buf), buf_size - strlen(buf),
721 " [PAR %d:%d DAR %d:%d]",
722 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
723 display_aspect_ratio.num, display_aspect_ratio.den);
7ee4dd02 724 }
a309073b 725 if(av_log_get_level() >= AV_LOG_DEBUG){
9ce6c138 726 int g= av_gcd(enc->time_base.num, enc->time_base.den);
21189011
MN
727 snprintf(buf + strlen(buf), buf_size - strlen(buf),
728 ", %d/%d",
729 enc->time_base.num/g, enc->time_base.den/g);
730 }
de6d9b64 731 }
4bfad535
FB
732 if (encode) {
733 snprintf(buf + strlen(buf), buf_size - strlen(buf),
734 ", q=%d-%d", enc->qmin, enc->qmax);
735 }
a96b68b7 736 bitrate = enc->bit_rate;
de6d9b64
FB
737 break;
738 case CODEC_TYPE_AUDIO:
739 snprintf(buf, buf_size,
740 "Audio: %s",
741 codec_name);
742 if (enc->sample_rate) {
743 snprintf(buf + strlen(buf), buf_size - strlen(buf),
0d72e7d0 744 ", %d Hz", enc->sample_rate);
de6d9b64 745 }
0d72e7d0
PR
746 av_strlcat(buf, ", ", buf_size);
747 avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
9e82a113
PR
748 if (enc->sample_fmt != SAMPLE_FMT_NONE) {
749 snprintf(buf + strlen(buf), buf_size - strlen(buf),
750 ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt));
751 }
115329f1 752
a96b68b7
FB
753 /* for PCM codecs, compute bitrate directly */
754 switch(enc->codec_id) {
143a5d6f
PR
755 case CODEC_ID_PCM_F64BE:
756 case CODEC_ID_PCM_F64LE:
757 bitrate = enc->sample_rate * enc->channels * 64;
758 break;
b461b3bc
RD
759 case CODEC_ID_PCM_S32LE:
760 case CODEC_ID_PCM_S32BE:
761 case CODEC_ID_PCM_U32LE:
762 case CODEC_ID_PCM_U32BE:
aa29709e 763 case CODEC_ID_PCM_F32BE:
143a5d6f 764 case CODEC_ID_PCM_F32LE:
b461b3bc
RD
765 bitrate = enc->sample_rate * enc->channels * 32;
766 break;
767 case CODEC_ID_PCM_S24LE:
768 case CODEC_ID_PCM_S24BE:
769 case CODEC_ID_PCM_U24LE:
770 case CODEC_ID_PCM_U24BE:
771 case CODEC_ID_PCM_S24DAUD:
772 bitrate = enc->sample_rate * enc->channels * 24;
773 break;
a96b68b7
FB
774 case CODEC_ID_PCM_S16LE:
775 case CODEC_ID_PCM_S16BE:
725d86bf 776 case CODEC_ID_PCM_S16LE_PLANAR:
a96b68b7
FB
777 case CODEC_ID_PCM_U16LE:
778 case CODEC_ID_PCM_U16BE:
a190b7e9 779 bitrate = enc->sample_rate * enc->channels * 16;
a96b68b7
FB
780 break;
781 case CODEC_ID_PCM_S8:
782 case CODEC_ID_PCM_U8:
783 case CODEC_ID_PCM_ALAW:
784 case CODEC_ID_PCM_MULAW:
9d49b8ff 785 case CODEC_ID_PCM_ZORK:
a190b7e9 786 bitrate = enc->sample_rate * enc->channels * 8;
a96b68b7
FB
787 break;
788 default:
789 bitrate = enc->bit_rate;
790 break;
791 }
de6d9b64 792 break;
985180a1
FB
793 case CODEC_TYPE_DATA:
794 snprintf(buf, buf_size, "Data: %s", codec_name);
240c1657
FB
795 bitrate = enc->bit_rate;
796 break;
797 case CODEC_TYPE_SUBTITLE:
798 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
985180a1
FB
799 bitrate = enc->bit_rate;
800 break;
f8d7c9d3
ES
801 case CODEC_TYPE_ATTACHMENT:
802 snprintf(buf, buf_size, "Attachment: %s", codec_name);
803 bitrate = enc->bit_rate;
804 break;
de6d9b64 805 default:
9fe5a7b8
MN
806 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
807 return;
de6d9b64 808 }
4bfad535
FB
809 if (encode) {
810 if (enc->flags & CODEC_FLAG_PASS1)
811 snprintf(buf + strlen(buf), buf_size - strlen(buf),
812 ", pass 1");
813 if (enc->flags & CODEC_FLAG_PASS2)
814 snprintf(buf + strlen(buf), buf_size - strlen(buf),
815 ", pass 2");
816 }
a96b68b7 817 if (bitrate != 0) {
115329f1 818 snprintf(buf + strlen(buf), buf_size - strlen(buf),
a96b68b7 819 ", %d kb/s", bitrate / 1000);
de6d9b64
FB
820 }
821}
822
156e5023
NK
823unsigned avcodec_version( void )
824{
825 return LIBAVCODEC_VERSION_INT;
826}
cf087595 827
de6d9b64
FB
828void avcodec_init(void)
829{
5e534865 830 static int initialized = 0;
0344cd0a 831
5e534865 832 if (initialized != 0)
bb270c08 833 return;
5e534865 834 initialized = 1;
0344cd0a 835
486497e0 836 dsputil_static_init();
de6d9b64
FB
837}
838
1c2a8c7f
MN
839void avcodec_flush_buffers(AVCodecContext *avctx)
840{
7a06ff14
MN
841 if(avctx->codec->flush)
842 avctx->codec->flush(avctx);
1c2a8c7f
MN
843}
844
b100eab8 845void avcodec_default_free_buffers(AVCodecContext *s){
d90cf87b
MN
846 int i, j;
847
848 if(s->internal_buffer==NULL) return;
115329f1 849
d90cf87b
MN
850 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
851 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
852 for(j=0; j<4; j++){
853 av_freep(&buf->base[j]);
854 buf->data[j]= NULL;
855 }
856 }
857 av_freep(&s->internal_buffer);
115329f1 858
d90cf87b
MN
859 s->internal_buffer_count=0;
860}
861
d8085ea7
MN
862char av_get_pict_type_char(int pict_type){
863 switch(pict_type){
fbd4293d
AJ
864 case FF_I_TYPE: return 'I';
865 case FF_P_TYPE: return 'P';
866 case FF_B_TYPE: return 'B';
867 case FF_S_TYPE: return 'S';
868 case FF_SI_TYPE:return 'i';
869 case FF_SP_TYPE:return 'p';
48d533e6 870 case FF_BI_TYPE:return 'b';
c06ccb13 871 default: return '?';
d8085ea7
MN
872 }
873}
874
ac3e1834
BC
875int av_get_bits_per_sample(enum CodecID codec_id){
876 switch(codec_id){
5da71469 877 case CODEC_ID_ADPCM_SBPRO_2:
f1b163e0 878 return 2;
5da71469 879 case CODEC_ID_ADPCM_SBPRO_3:
f1b163e0 880 return 3;
5da71469 881 case CODEC_ID_ADPCM_SBPRO_4:
f1b163e0
AJ
882 case CODEC_ID_ADPCM_CT:
883 return 4;
ac3e1834
BC
884 case CODEC_ID_PCM_ALAW:
885 case CODEC_ID_PCM_MULAW:
886 case CODEC_ID_PCM_S8:
887 case CODEC_ID_PCM_U8:
9d49b8ff 888 case CODEC_ID_PCM_ZORK:
ac3e1834
BC
889 return 8;
890 case CODEC_ID_PCM_S16BE:
891 case CODEC_ID_PCM_S16LE:
725d86bf 892 case CODEC_ID_PCM_S16LE_PLANAR:
ac3e1834
BC
893 case CODEC_ID_PCM_U16BE:
894 case CODEC_ID_PCM_U16LE:
895 return 16;
896 case CODEC_ID_PCM_S24DAUD:
897 case CODEC_ID_PCM_S24BE:
898 case CODEC_ID_PCM_S24LE:
899 case CODEC_ID_PCM_U24BE:
900 case CODEC_ID_PCM_U24LE:
901 return 24;
902 case CODEC_ID_PCM_S32BE:
903 case CODEC_ID_PCM_S32LE:
904 case CODEC_ID_PCM_U32BE:
905 case CODEC_ID_PCM_U32LE:
aa29709e 906 case CODEC_ID_PCM_F32BE:
143a5d6f 907 case CODEC_ID_PCM_F32LE:
ac3e1834 908 return 32;
143a5d6f
PR
909 case CODEC_ID_PCM_F64BE:
910 case CODEC_ID_PCM_F64LE:
911 return 64;
ac3e1834
BC
912 default:
913 return 0;
914 }
915}
916
42c71907
DC
917int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
918 switch (sample_fmt) {
919 case SAMPLE_FMT_U8:
920 return 8;
921 case SAMPLE_FMT_S16:
922 return 16;
42c71907
DC
923 case SAMPLE_FMT_S32:
924 case SAMPLE_FMT_FLT:
925 return 32;
e06b00f3
PR
926 case SAMPLE_FMT_DBL:
927 return 64;
42c71907
DC
928 default:
929 return 0;
930 }
931}
932
b250f9c6 933#if !HAVE_THREADS
ca8ad847
MN
934int avcodec_thread_init(AVCodecContext *s, int thread_count){
935 return -1;
936}
937#endif
ad2b531d
MR
938
939unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
940{
941 unsigned int n = 0;
942
943 while(v >= 0xff) {
944 *s++ = 0xff;
945 v -= 0xff;
946 n++;
947 }
948 *s = v;
949 n++;
950 return n;
951}
1005f542
CH
952
953/* Wrapper to work around the lack of mkstemp() on mingw/cygin.
954 * Also, tries to create file in /tmp first, if possible.
955 * *prefix can be a character constant; *filename will be allocated internally.
956 * Returns file descriptor of opened file (or -1 on error)
957 * and opened file name in **filename. */
958int av_tempfile(char *prefix, char **filename) {
959 int fd=-1;
b250f9c6 960#if !HAVE_MKSTEMP
1005f542
CH
961 *filename = tempnam(".", prefix);
962#else
963 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
f2508b17 964 *filename = av_malloc(len);
1005f542
CH
965#endif
966 /* -----common section-----*/
967 if (*filename == NULL) {
968 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
969 return -1;
970 }
b250f9c6 971#if !HAVE_MKSTEMP
76353b42 972 fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
1005f542
CH
973#else
974 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
975 fd = mkstemp(*filename);
976 if (fd < 0) {
977 snprintf(*filename, len, "./%sXXXXXX", prefix);
978 fd = mkstemp(*filename);
979 }
980#endif
981 /* -----common section-----*/
982 if (fd < 0) {
983 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
984 return -1;
985 }
986 return fd; /* success */
987}
26ef3220
SS
988
989typedef struct {
c0ad72a7 990 const char *abbr;
26ef3220 991 int width, height;
c0ad72a7
SS
992} VideoFrameSizeAbbr;
993
994typedef struct {
995 const char *abbr;
996 int rate_num, rate_den;
997} VideoFrameRateAbbr;
998
cf2baeb3 999static const VideoFrameSizeAbbr video_frame_size_abbrs[] = {
c0ad72a7
SS
1000 { "ntsc", 720, 480 },
1001 { "pal", 720, 576 },
1002 { "qntsc", 352, 240 }, /* VCD compliant NTSC */
1003 { "qpal", 352, 288 }, /* VCD compliant PAL */
1004 { "sntsc", 640, 480 }, /* square pixel NTSC */
1005 { "spal", 768, 576 }, /* square pixel PAL */
1006 { "film", 352, 240 },
1007 { "ntsc-film", 352, 240 },
1008 { "sqcif", 128, 96 },
1009 { "qcif", 176, 144 },
1010 { "cif", 352, 288 },
1011 { "4cif", 704, 576 },
41913a35 1012 { "16cif", 1408,1152 },
c0ad72a7
SS
1013 { "qqvga", 160, 120 },
1014 { "qvga", 320, 240 },
1015 { "vga", 640, 480 },
1016 { "svga", 800, 600 },
1017 { "xga", 1024, 768 },
1018 { "uxga", 1600,1200 },
1019 { "qxga", 2048,1536 },
1020 { "sxga", 1280,1024 },
1021 { "qsxga", 2560,2048 },
1022 { "hsxga", 5120,4096 },
1023 { "wvga", 852, 480 },
1024 { "wxga", 1366, 768 },
1025 { "wsxga", 1600,1024 },
1026 { "wuxga", 1920,1200 },
1027 { "woxga", 2560,1600 },
1028 { "wqsxga", 3200,2048 },
1029 { "wquxga", 3840,2400 },
1030 { "whsxga", 6400,4096 },
1031 { "whuxga", 7680,4800 },
1032 { "cga", 320, 200 },
1033 { "ega", 640, 350 },
1034 { "hd480", 852, 480 },
1035 { "hd720", 1280, 720 },
1036 { "hd1080", 1920,1080 },
1037};
1038
cf2baeb3 1039static const VideoFrameRateAbbr video_frame_rate_abbrs[]= {
c0ad72a7
SS
1040 { "ntsc", 30000, 1001 },
1041 { "pal", 25, 1 },
1042 { "qntsc", 30000, 1001 }, /* VCD compliant NTSC */
1043 { "qpal", 25, 1 }, /* VCD compliant PAL */
1044 { "sntsc", 30000, 1001 }, /* square pixel NTSC */
1045 { "spal", 25, 1 }, /* square pixel PAL */
1046 { "film", 24, 1 },
1047 { "ntsc-film", 24000, 1001 },
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SS
1048};
1049
1050int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1051{
1052 int i;
37d3e066 1053 int n = FF_ARRAY_ELEMS(video_frame_size_abbrs);
8468664b 1054 char *p;
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SS
1055 int frame_width = 0, frame_height = 0;
1056
1057 for(i=0;i<n;i++) {
c0ad72a7
SS
1058 if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {
1059 frame_width = video_frame_size_abbrs[i].width;
1060 frame_height = video_frame_size_abbrs[i].height;
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SS
1061 break;
1062 }
1063 }
1064 if (i == n) {
1065 p = str;
8468664b 1066 frame_width = strtol(p, &p, 10);
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SS
1067 if (*p)
1068 p++;
8468664b 1069 frame_height = strtol(p, &p, 10);
26ef3220
SS
1070 }
1071 if (frame_width <= 0 || frame_height <= 0)
1072 return -1;
1073 *width_ptr = frame_width;
1074 *height_ptr = frame_height;
1075 return 0;
1076}
1077
1078int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1079{
1080 int i;
37d3e066 1081 int n = FF_ARRAY_ELEMS(video_frame_rate_abbrs);
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SS
1082 char* cp;
1083
1084 /* First, we check our abbreviation table */
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SS
1085 for (i = 0; i < n; ++i)
1086 if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {
1087 frame_rate->num = video_frame_rate_abbrs[i].rate_num;
1088 frame_rate->den = video_frame_rate_abbrs[i].rate_den;
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SS
1089 return 0;
1090 }
1091
1092 /* Then, we try to parse it as fraction */
1093 cp = strchr(arg, '/');
1094 if (!cp)
1095 cp = strchr(arg, ':');
1096 if (cp) {
1097 char* cpp;
1098 frame_rate->num = strtol(arg, &cpp, 10);
1099 if (cpp != arg || cpp == cp)
1100 frame_rate->den = strtol(cp+1, &cpp, 10);
1101 else
1102 frame_rate->num = 0;
1103 }
1104 else {
1105 /* Finally we give up and parse it as double */
38360668 1106 AVRational time_base = av_d2q(strtod(arg, 0), 1001000);
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SS
1107 frame_rate->den = time_base.den;
1108 frame_rate->num = time_base.num;
1109 }
1110 if (!frame_rate->num || !frame_rate->den)
1111 return -1;
1112 else
1113 return 0;
1114}
ea779d91 1115
dbbec0c2 1116void ff_log_missing_feature(void *avc, const char *feature, int want_sample)
ea779d91
JR
1117{
1118 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1119 "version to the newest one from SVN. If the problem still "
1120 "occurs, it means that your file has a feature which has not "
1121 "been implemented.", feature);
1122 if(want_sample)
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KG
1123 ff_log_ask_for_sample(avc, NULL);
1124 else
1125 av_log(avc, AV_LOG_WARNING, "\n");
1126}
1127
1128void ff_log_ask_for_sample(void *avc, const char *msg)
1129{
1130 if (msg)
1131 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1132 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1133 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1134 "and contact the ffmpeg-devel mailing list.\n");
ea779d91 1135}
c895618b
MN
1136
1137static AVHWAccel *first_hwaccel = NULL;
1138
1139void av_register_hwaccel(AVHWAccel *hwaccel)
1140{
1141 AVHWAccel **p = &first_hwaccel;
1142 while (*p)
1143 p = &(*p)->next;
1144 *p = hwaccel;
1145 hwaccel->next = NULL;
1146}
414d9d7f
MN
1147
1148AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1149{
1150 return hwaccel ? hwaccel->next : first_hwaccel;
1151}
6059f13c
MN
1152
1153AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1154{
1155 AVHWAccel *hwaccel=NULL;
1156
1157 while((hwaccel= av_hwaccel_next(hwaccel))){
1158 if ( hwaccel->id == codec_id
1159 && hwaccel->pix_fmt == pix_fmt)
1160 return hwaccel;
1161 }
1162 return NULL;
1163}