remove cast and use put_sbits, fix assertion in put_bits
[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
238ef6da
RD
83void av_fast_malloc(void *ptr, unsigned int *size, unsigned int min_size)
84{
85 void **p = ptr;
86 if (min_size < *size)
87 return;
88 *size= FFMAX(17*min_size/16 + 32, min_size);
89 av_free(*p);
90 *p = av_malloc(*size);
91 if (!*p) *size = 0;
92}
93
de6d9b64 94/* encoder management */
e6df765e 95static AVCodec *first_avcodec = NULL;
de6d9b64 96
55b9e69a
MN
97AVCodec *av_codec_next(AVCodec *c){
98 if(c) return c->next;
99 else return first_avcodec;
100}
101
85662f49 102void avcodec_register(AVCodec *codec)
de6d9b64
FB
103{
104 AVCodec **p;
7a961a46 105 avcodec_init();
de6d9b64
FB
106 p = &first_avcodec;
107 while (*p != NULL) p = &(*p)->next;
335a761a
SS
108 *p = codec;
109 codec->next = NULL;
de6d9b64
FB
110}
111
9d385cfe 112#if LIBAVCODEC_VERSION_MAJOR < 53
85662f49
SS
113void register_avcodec(AVCodec *codec)
114{
115 avcodec_register(codec);
116}
9d385cfe 117#endif
85662f49 118
21adafec
MN
119void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
120 s->coded_width = width;
121 s->coded_height= height;
122 s->width = -((-width )>>s->lowres);
123 s->height= -((-height)>>s->lowres);
124}
125
d90cf87b 126typedef struct InternalBuffer{
1e491e29 127 int last_pic_num;
d90cf87b 128 uint8_t *base[4];
1e491e29 129 uint8_t *data[4];
237e4938 130 int linesize[4];
0701006e
MN
131 int width, height;
132 enum PixelFormat pix_fmt;
d90cf87b
MN
133}InternalBuffer;
134
135#define INTERNAL_BUFFER_SIZE 32
1e491e29 136
f0bbfc4a 137void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
115329f1
DB
138 int w_align= 1;
139 int h_align= 1;
140
f0bbfc4a
MN
141 switch(s->pix_fmt){
142 case PIX_FMT_YUV420P:
71e445fc 143 case PIX_FMT_YUYV422:
ebb177dd 144 case PIX_FMT_UYVY422:
f0bbfc4a
MN
145 case PIX_FMT_YUV422P:
146 case PIX_FMT_YUV444P:
147 case PIX_FMT_GRAY8:
34380af0
KS
148 case PIX_FMT_GRAY16BE:
149 case PIX_FMT_GRAY16LE:
f0bbfc4a
MN
150 case PIX_FMT_YUVJ420P:
151 case PIX_FMT_YUVJ422P:
152 case PIX_FMT_YUVJ444P:
b70335a2 153 case PIX_FMT_YUVA420P:
f0bbfc4a
MN
154 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
155 h_align= 16;
c81185a1
MN
156 if(s->codec_id == CODEC_ID_MPEG2VIDEO)
157 h_align= 32; // interlaced is rounded up to 2 MBs
f0bbfc4a
MN
158 break;
159 case PIX_FMT_YUV411P:
71e445fc 160 case PIX_FMT_UYYVYY411:
f0bbfc4a
MN
161 w_align=32;
162 h_align=8;
163 break;
164 case PIX_FMT_YUV410P:
165 if(s->codec_id == CODEC_ID_SVQ1){
166 w_align=64;
167 h_align=64;
168 }
d99fbbf4
RT
169 case PIX_FMT_RGB555:
170 if(s->codec_id == CODEC_ID_RPZA){
171 w_align=4;
172 h_align=4;
173 }
174 case PIX_FMT_PAL8:
6337178b
MN
175 case PIX_FMT_BGR8:
176 case PIX_FMT_RGB8:
d99fbbf4
RT
177 if(s->codec_id == CODEC_ID_SMC){
178 w_align=4;
179 h_align=4;
180 }
f0bbfc4a 181 break;
c31b8121
RT
182 case PIX_FMT_BGR24:
183 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
184 w_align=4;
185 h_align=4;
186 }
187 break;
f0bbfc4a
MN
188 default:
189 w_align= 1;
190 h_align= 1;
191 break;
192 }
193
ef516f73
DC
194 *width = FFALIGN(*width , w_align);
195 *height= FFALIGN(*height, h_align);
ae4ffe9f
MN
196 if(s->codec_id == CODEC_ID_H264)
197 *height+=2; // some of the optimized chroma MC reads one line too much
f0bbfc4a
MN
198}
199
0ecca7a4 200int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
445f0a8b 201 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/8)
0ecca7a4 202 return 0;
115329f1 203
0ecca7a4
MN
204 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
205 return -1;
206}
207
492cd3a9 208int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
1e491e29 209 int i;
f0bbfc4a
MN
210 int w= s->width;
211 int h= s->height;
d90cf87b 212 InternalBuffer *buf;
237e4938 213 int *picture_number;
0ecca7a4 214
65d999d6
MB
215 if(pic->data[0]!=NULL) {
216 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
217 return -1;
218 }
219 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
220 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
221 return -1;
222 }
1e491e29 223
0ecca7a4
MN
224 if(avcodec_check_dimensions(s,w,h))
225 return -1;
226
d90cf87b 227 if(s->internal_buffer==NULL){
6ebc89ac 228 s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
d90cf87b
MN
229 }
230#if 0
231 s->internal_buffer= av_fast_realloc(
115329f1
DB
232 s->internal_buffer,
233 &s->internal_buffer_size,
d90cf87b
MN
234 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
235 );
236#endif
115329f1 237
d90cf87b 238 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
6ebc89ac 239 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
237e4938 240 (*picture_number)++;
115329f1 241
0701006e
MN
242 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
243 for(i=0; i<4; i++){
244 av_freep(&buf->base[i]);
245 buf->data[i]= NULL;
246 }
247 }
248
d90cf87b 249 if(buf->base[0]){
237e4938
MN
250 pic->age= *picture_number - buf->last_pic_num;
251 buf->last_pic_num= *picture_number;
1e491e29 252 }else{
f0bbfc4a 253 int h_chroma_shift, v_chroma_shift;
db7ae7d1
VS
254 int size[4] = {0};
255 int tmpsize;
c9d6e847 256 int unaligned;
c7622f9a 257 AVPicture picture;
503bc402 258 int stride_align[4];
c7622f9a 259
1e491e29 260 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
f0bbfc4a
MN
261
262 avcodec_align_dimensions(s, &w, &h);
115329f1 263
1e491e29
MN
264 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
265 w+= EDGE_WIDTH*2;
266 h+= EDGE_WIDTH*2;
267 }
5b67307a 268
c9d6e847
RD
269 do {
270 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
271 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
45bae968 272 ff_fill_linesize(&picture, s->pix_fmt, w);
c9d6e847
RD
273 // increase alignment of w for next try (rhs gives the lowest bit set in w)
274 w += w & ~(w-1);
db7ae7d1 275
c9d6e847 276 unaligned = 0;
45bae968 277 for (i=0; i<4; i++){
503bc402
MN
278//STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
279//we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
280//picture size unneccessarily in some cases. The solution here is not
281//pretty and better ideas are welcome!
b250f9c6 282#if HAVE_MMX
45bae968
RD
283 if(s->codec_id == CODEC_ID_SVQ1)
284 stride_align[i]= 16;
285 else
503bc402 286#endif
45bae968 287 stride_align[i] = STRIDE_ALIGN;
c9d6e847 288 unaligned |= picture.linesize[i] % stride_align[i];
45bae968 289 }
c9d6e847 290 } while (unaligned);
db7ae7d1 291
db7ae7d1 292 tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h);
f8c96d01
RD
293 if (tmpsize < 0)
294 return -1;
db7ae7d1
VS
295
296 for (i=0; i<3 && picture.data[i+1]; i++)
297 size[i] = picture.data[i+1] - picture.data[i];
cf73e32a 298 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
c7622f9a 299
d90cf87b 300 buf->last_pic_num= -256*256*256*64;
c7622f9a
MN
301 memset(buf->base, 0, sizeof(buf->base));
302 memset(buf->data, 0, sizeof(buf->data));
1e491e29 303
b70335a2 304 for(i=0; i<4 && size[i]; i++){
2c19981a
MN
305 const int h_shift= i==0 ? 0 : h_chroma_shift;
306 const int v_shift= i==0 ? 0 : v_chroma_shift;
1e491e29 307
c7622f9a 308 buf->linesize[i]= picture.linesize[i];
1e491e29 309
c7622f9a 310 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
d90cf87b 311 if(buf->base[i]==NULL) return -1;
c7622f9a
MN
312 memset(buf->base[i], 128, size[i]);
313
6337178b
MN
314 // no edge if EDEG EMU or not planar YUV
315 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
d90cf87b 316 buf->data[i] = buf->base[i];
1e491e29 317 else
ef516f73 318 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
1e491e29 319 }
6337178b
MN
320 if(size[1] && !size[2])
321 ff_set_systematic_pal((uint32_t*)buf->data[1], s->pix_fmt);
0701006e
MN
322 buf->width = s->width;
323 buf->height = s->height;
324 buf->pix_fmt= s->pix_fmt;
1e491e29
MN
325 pic->age= 256*256*256*64;
326 }
237e4938 327 pic->type= FF_BUFFER_TYPE_INTERNAL;
1e491e29 328
d90cf87b
MN
329 for(i=0; i<4; i++){
330 pic->base[i]= buf->base[i];
331 pic->data[i]= buf->data[i];
237e4938 332 pic->linesize[i]= buf->linesize[i];
d90cf87b
MN
333 }
334 s->internal_buffer_count++;
335
79de84f2
MN
336 pic->reordered_opaque= s->reordered_opaque;
337
385c820b
AS
338 if(s->debug&FF_DEBUG_BUFFERS)
339 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
340
1e491e29
MN
341 return 0;
342}
343
492cd3a9 344void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
1e491e29 345 int i;
6829ac8d 346 InternalBuffer *buf, *last;
d90cf87b 347
4e00e76b 348 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
59c673d5 349 assert(s->internal_buffer_count);
d90cf87b 350
b1609412 351 buf = NULL; /* avoids warning */
d90cf87b
MN
352 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
353 buf= &((InternalBuffer*)s->internal_buffer)[i];
354 if(buf->data[0] == pic->data[0])
355 break;
356 }
357 assert(i < s->internal_buffer_count);
358 s->internal_buffer_count--;
359 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
360
6829ac8d 361 FFSWAP(InternalBuffer, *buf, *last);
d90cf87b 362
b70335a2 363 for(i=0; i<4; i++){
1e491e29 364 pic->data[i]=NULL;
d90cf87b
MN
365// pic->base[i]=NULL;
366 }
1e491e29 367//printf("R%X\n", pic->opaque);
385c820b
AS
368
369 if(s->debug&FF_DEBUG_BUFFERS)
370 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
1e491e29
MN
371}
372
e1c2a5a0
RT
373int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
374 AVFrame temp_pic;
375 int i;
376
377 /* If no picture return a new buffer */
378 if(pic->data[0] == NULL) {
379 /* We will copy from buffer, so must be readable */
380 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
381 return s->get_buffer(s, pic);
382 }
383
384 /* If internal buffer type return the same buffer */
385 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
386 return 0;
387
388 /*
389 * Not internal type and reget_buffer not overridden, emulate cr buffer
390 */
391 temp_pic = *pic;
392 for(i = 0; i < 4; i++)
393 pic->data[i] = pic->base[i] = NULL;
394 pic->opaque = NULL;
395 /* Allocate new frame */
396 if (s->get_buffer(s, pic))
397 return -1;
398 /* Copy image data from old buffer to new buffer */
636d6a4a 399 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
e1c2a5a0
RT
400 s->height);
401 s->release_buffer(s, &temp_pic); // Release old frame
402 return 0;
403}
404
3a84713a 405int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
9c3d33d6
MN
406 int i;
407
408 for(i=0; i<count; i++){
3a84713a 409 int r= func(c, (char*)arg + i*size);
9c3d33d6
MN
410 if(ret) ret[i]= r;
411 }
412 return 0;
413}
414
c269cf68
MN
415enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
416 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
417 ++fmt;
a33c7159
MN
418 return fmt[0];
419}
420
9740beff
MN
421void avcodec_get_frame_defaults(AVFrame *pic){
422 memset(pic, 0, sizeof(AVFrame));
423
424 pic->pts= AV_NOPTS_VALUE;
c342499d 425 pic->key_frame= 1;
9740beff
MN
426}
427
492cd3a9 428AVFrame *avcodec_alloc_frame(void){
9740beff 429 AVFrame *pic= av_malloc(sizeof(AVFrame));
115329f1 430
9740beff 431 if(pic==NULL) return NULL;
115329f1 432
9740beff 433 avcodec_get_frame_defaults(pic);
115329f1 434
1e491e29
MN
435 return pic;
436}
437
5e4c7ca2 438int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
de6d9b64 439{
ddebfb15 440 int ret= -1;
115329f1 441
ddebfb15
MN
442 entangled_thread_counter++;
443 if(entangled_thread_counter != 1){
444 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
445 goto end;
446 }
de6d9b64 447
9c87b8f7 448 if(avctx->codec || !codec)
ddebfb15 449 goto end;
09770af8 450
0edf8a7a
PG
451 if (codec->priv_data_size > 0) {
452 avctx->priv_data = av_mallocz(codec->priv_data_size);
90f06cea
PI
453 if (!avctx->priv_data) {
454 ret = AVERROR(ENOMEM);
ddebfb15 455 goto end;
90f06cea 456 }
0edf8a7a
PG
457 } else {
458 avctx->priv_data = NULL;
459 }
21adafec
MN
460
461 if(avctx->coded_width && avctx->coded_height)
462 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
463 else if(avctx->width && avctx->height)
464 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
465
0ecca7a4
MN
466 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
467 av_freep(&avctx->priv_data);
7868349a 468 ret = AVERROR(EINVAL);
ddebfb15 469 goto end;
0ecca7a4
MN
470 }
471
b5c85991
MN
472 avctx->codec = codec;
473 avctx->codec_id = codec->id;
474 avctx->frame_number = 0;
6e546aaa 475 if(avctx->codec->init){
2de4f9eb
MN
476 ret = avctx->codec->init(avctx);
477 if (ret < 0) {
478 av_freep(&avctx->priv_data);
479 avctx->codec= NULL;
480 goto end;
481 }
6e546aaa 482 }
ddebfb15
MN
483 ret=0;
484end:
485 entangled_thread_counter--;
486 return ret;
de6d9b64
FB
487}
488
5e4c7ca2 489int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64
FB
490 const short *samples)
491{
0ecca7a4 492 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
5286d11f 493 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
0ecca7a4
MN
494 return -1;
495 }
6f824977 496 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
8eb027c8 497 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
6f824977
MN
498 avctx->frame_number++;
499 return ret;
500 }else
501 return 0;
de6d9b64
FB
502}
503
5e4c7ca2 504int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 505 const AVFrame *pict)
de6d9b64 506{
0ecca7a4 507 if(buf_size < FF_MIN_BUFFER_SIZE){
5286d11f 508 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
0ecca7a4
MN
509 return -1;
510 }
511 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
512 return -1;
6f824977 513 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
8eb027c8 514 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
6f824977 515 avctx->frame_number++;
bb628dae 516 emms_c(); //needed to avoid an emms_c() call before every return;
115329f1 517
6f824977
MN
518 return ret;
519 }else
520 return 0;
de6d9b64
FB
521}
522
115329f1 523int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
240c1657
FB
524 const AVSubtitle *sub)
525{
526 int ret;
9413db9e
BA
527 if(sub->start_display_time) {
528 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
529 return -1;
530 }
505aa6c9
BA
531 if(sub->num_rects == 0 || !sub->rects)
532 return -1;
8eb027c8 533 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
240c1657
FB
534 avctx->frame_number++;
535 return ret;
536}
537
7a00bbad 538#if LIBAVCODEC_VERSION_MAJOR < 53
5e4c7ca2 539int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 540 int *got_picture_ptr,
2efa7fd1 541 const uint8_t *buf, int buf_size)
de6d9b64 542{
7a00bbad
TB
543 AVPacket avpkt;
544 av_init_packet(&avpkt);
545 avpkt.data = buf;
546 avpkt.size = buf_size;
547
548 return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
549}
550#endif
551
552int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
553 int *got_picture_ptr,
554 AVPacket *avpkt)
555{
de6d9b64 556 int ret;
115329f1 557
53db1cae 558 *got_picture_ptr= 0;
0ecca7a4
MN
559 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
560 return -1;
7a00bbad 561 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
115329f1 562 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
7a00bbad 563 avpkt);
6bb925f4 564
bb628dae 565 emms_c(); //needed to avoid an emms_c() call before every return;
115329f1
DB
566
567 if (*got_picture_ptr)
934982c4
MN
568 avctx->frame_number++;
569 }else
570 ret= 0;
571
de6d9b64
FB
572 return ret;
573}
574
7a00bbad 575#if LIBAVCODEC_VERSION_MAJOR < 53
5e4c7ca2 576int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
de6d9b64 577 int *frame_size_ptr,
2efa7fd1 578 const uint8_t *buf, int buf_size)
de6d9b64 579{
7a00bbad
TB
580 AVPacket avpkt;
581 av_init_packet(&avpkt);
582 avpkt.data = buf;
583 avpkt.size = buf_size;
584
585 return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
586}
587#endif
588
589int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
590 int *frame_size_ptr,
591 AVPacket *avpkt)
592{
de6d9b64
FB
593 int ret;
594
7a00bbad 595 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
9c856d62
MN
596 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
597 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
598 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
599 return -1;
600 }
601 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
81fc2f37 602 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
9c856d62
MN
603 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
604 return -1;
605 }
606
7a00bbad 607 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
fec9ccb7 608 avctx->frame_number++;
ac66834c 609 }else{
fec9ccb7 610 ret= 0;
ac66834c
MN
611 *frame_size_ptr=0;
612 }
de6d9b64
FB
613 return ret;
614}
615
7a00bbad 616#if LIBAVCODEC_VERSION_MAJOR < 53
240c1657
FB
617int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
618 int *got_sub_ptr,
619 const uint8_t *buf, int buf_size)
620{
7a00bbad
TB
621 AVPacket avpkt;
622 av_init_packet(&avpkt);
623 avpkt.data = buf;
624 avpkt.size = buf_size;
625
626 return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
627}
628#endif
629
630int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
631 int *got_sub_ptr,
632 AVPacket *avpkt)
633{
240c1657
FB
634 int ret;
635
636 *got_sub_ptr = 0;
7a00bbad 637 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
240c1657
FB
638 if (*got_sub_ptr)
639 avctx->frame_number++;
640 return ret;
641}
642
de6d9b64
FB
643int avcodec_close(AVCodecContext *avctx)
644{
ddebfb15
MN
645 entangled_thread_counter++;
646 if(entangled_thread_counter != 1){
647 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
648 entangled_thread_counter--;
649 return -1;
650 }
651
49fb20cb 652 if (HAVE_THREADS && avctx->thread_opaque)
ab2cfc59 653 avcodec_thread_free(avctx);
de6d9b64
FB
654 if (avctx->codec->close)
655 avctx->codec->close(avctx);
eea8c08f 656 avcodec_default_free_buffers(avctx);
3123dd79 657 av_freep(&avctx->priv_data);
de6d9b64 658 avctx->codec = NULL;
ddebfb15 659 entangled_thread_counter--;
de6d9b64
FB
660 return 0;
661}
662
663AVCodec *avcodec_find_encoder(enum CodecID id)
664{
665 AVCodec *p;
666 p = first_avcodec;
667 while (p) {
668 if (p->encode != NULL && p->id == id)
669 return p;
670 p = p->next;
671 }
672 return NULL;
673}
674
98f3b098
A
675AVCodec *avcodec_find_encoder_by_name(const char *name)
676{
677 AVCodec *p;
fc228c90
AJ
678 if (!name)
679 return NULL;
98f3b098
A
680 p = first_avcodec;
681 while (p) {
682 if (p->encode != NULL && strcmp(name,p->name) == 0)
683 return p;
684 p = p->next;
685 }
686 return NULL;
687}
688
de6d9b64
FB
689AVCodec *avcodec_find_decoder(enum CodecID id)
690{
691 AVCodec *p;
692 p = first_avcodec;
693 while (p) {
694 if (p->decode != NULL && p->id == id)
695 return p;
696 p = p->next;
697 }
698 return NULL;
699}
700
701AVCodec *avcodec_find_decoder_by_name(const char *name)
702{
703 AVCodec *p;
fc228c90
AJ
704 if (!name)
705 return NULL;
de6d9b64
FB
706 p = first_avcodec;
707 while (p) {
708 if (p->decode != NULL && strcmp(name,p->name) == 0)
709 return p;
710 p = p->next;
711 }
712 return NULL;
713}
714
de6d9b64
FB
715void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
716{
717 const char *codec_name;
718 AVCodec *p;
719 char buf1[32];
a96b68b7 720 int bitrate;
59771f71 721 AVRational display_aspect_ratio;
de6d9b64
FB
722
723 if (encode)
724 p = avcodec_find_encoder(enc->codec_id);
725 else
726 p = avcodec_find_decoder(enc->codec_id);
727
728 if (p) {
729 codec_name = p->name;
985180a1
FB
730 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
731 /* fake mpeg2 transport stream codec (currently not
732 registered) */
733 codec_name = "mpeg2ts";
de6d9b64
FB
734 } else if (enc->codec_name[0] != '\0') {
735 codec_name = enc->codec_name;
736 } else {
737 /* output avi tags */
115329f1 738 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
b983a5c6 739 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
115329f1 740 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
de6d9b64
FB
741 enc->codec_tag & 0xff,
742 (enc->codec_tag >> 8) & 0xff,
743 (enc->codec_tag >> 16) & 0xff,
b983a5c6
MN
744 (enc->codec_tag >> 24) & 0xff,
745 enc->codec_tag);
de6d9b64
FB
746 } else {
747 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
748 }
749 codec_name = buf1;
750 }
751
752 switch(enc->codec_type) {
753 case CODEC_TYPE_VIDEO:
754 snprintf(buf, buf_size,
755 "Video: %s%s",
7d1c3fc1 756 codec_name, enc->mb_decision ? " (hq)" : "");
82c0c4ba 757 if (enc->pix_fmt != PIX_FMT_NONE) {
cf087595
FB
758 snprintf(buf + strlen(buf), buf_size - strlen(buf),
759 ", %s",
9bbffbb1 760 avcodec_get_pix_fmt_name(enc->pix_fmt));
cf087595 761 }
de6d9b64
FB
762 if (enc->width) {
763 snprintf(buf + strlen(buf), buf_size - strlen(buf),
21189011
MN
764 ", %dx%d",
765 enc->width, enc->height);
7ee4dd02 766 if (enc->sample_aspect_ratio.num) {
cbaf50f8
BC
767 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
768 enc->width*enc->sample_aspect_ratio.num,
769 enc->height*enc->sample_aspect_ratio.den,
770 1024*1024);
771 snprintf(buf + strlen(buf), buf_size - strlen(buf),
772 " [PAR %d:%d DAR %d:%d]",
773 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
774 display_aspect_ratio.num, display_aspect_ratio.den);
7ee4dd02 775 }
a309073b 776 if(av_log_get_level() >= AV_LOG_DEBUG){
9ce6c138 777 int g= av_gcd(enc->time_base.num, enc->time_base.den);
21189011
MN
778 snprintf(buf + strlen(buf), buf_size - strlen(buf),
779 ", %d/%d",
780 enc->time_base.num/g, enc->time_base.den/g);
781 }
de6d9b64 782 }
4bfad535
FB
783 if (encode) {
784 snprintf(buf + strlen(buf), buf_size - strlen(buf),
785 ", q=%d-%d", enc->qmin, enc->qmax);
786 }
a96b68b7 787 bitrate = enc->bit_rate;
de6d9b64
FB
788 break;
789 case CODEC_TYPE_AUDIO:
790 snprintf(buf, buf_size,
791 "Audio: %s",
792 codec_name);
793 if (enc->sample_rate) {
794 snprintf(buf + strlen(buf), buf_size - strlen(buf),
0d72e7d0 795 ", %d Hz", enc->sample_rate);
de6d9b64 796 }
0d72e7d0
PR
797 av_strlcat(buf, ", ", buf_size);
798 avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
9e82a113
PR
799 if (enc->sample_fmt != SAMPLE_FMT_NONE) {
800 snprintf(buf + strlen(buf), buf_size - strlen(buf),
801 ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt));
802 }
115329f1 803
a96b68b7
FB
804 /* for PCM codecs, compute bitrate directly */
805 switch(enc->codec_id) {
143a5d6f
PR
806 case CODEC_ID_PCM_F64BE:
807 case CODEC_ID_PCM_F64LE:
808 bitrate = enc->sample_rate * enc->channels * 64;
809 break;
b461b3bc
RD
810 case CODEC_ID_PCM_S32LE:
811 case CODEC_ID_PCM_S32BE:
812 case CODEC_ID_PCM_U32LE:
813 case CODEC_ID_PCM_U32BE:
aa29709e 814 case CODEC_ID_PCM_F32BE:
143a5d6f 815 case CODEC_ID_PCM_F32LE:
b461b3bc
RD
816 bitrate = enc->sample_rate * enc->channels * 32;
817 break;
818 case CODEC_ID_PCM_S24LE:
819 case CODEC_ID_PCM_S24BE:
820 case CODEC_ID_PCM_U24LE:
821 case CODEC_ID_PCM_U24BE:
822 case CODEC_ID_PCM_S24DAUD:
823 bitrate = enc->sample_rate * enc->channels * 24;
824 break;
a96b68b7
FB
825 case CODEC_ID_PCM_S16LE:
826 case CODEC_ID_PCM_S16BE:
725d86bf 827 case CODEC_ID_PCM_S16LE_PLANAR:
a96b68b7
FB
828 case CODEC_ID_PCM_U16LE:
829 case CODEC_ID_PCM_U16BE:
a190b7e9 830 bitrate = enc->sample_rate * enc->channels * 16;
a96b68b7
FB
831 break;
832 case CODEC_ID_PCM_S8:
833 case CODEC_ID_PCM_U8:
834 case CODEC_ID_PCM_ALAW:
835 case CODEC_ID_PCM_MULAW:
9d49b8ff 836 case CODEC_ID_PCM_ZORK:
a190b7e9 837 bitrate = enc->sample_rate * enc->channels * 8;
a96b68b7
FB
838 break;
839 default:
840 bitrate = enc->bit_rate;
841 break;
842 }
de6d9b64 843 break;
985180a1
FB
844 case CODEC_TYPE_DATA:
845 snprintf(buf, buf_size, "Data: %s", codec_name);
240c1657
FB
846 bitrate = enc->bit_rate;
847 break;
848 case CODEC_TYPE_SUBTITLE:
849 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
985180a1
FB
850 bitrate = enc->bit_rate;
851 break;
f8d7c9d3
ES
852 case CODEC_TYPE_ATTACHMENT:
853 snprintf(buf, buf_size, "Attachment: %s", codec_name);
854 bitrate = enc->bit_rate;
855 break;
de6d9b64 856 default:
9fe5a7b8
MN
857 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
858 return;
de6d9b64 859 }
4bfad535
FB
860 if (encode) {
861 if (enc->flags & CODEC_FLAG_PASS1)
862 snprintf(buf + strlen(buf), buf_size - strlen(buf),
863 ", pass 1");
864 if (enc->flags & CODEC_FLAG_PASS2)
865 snprintf(buf + strlen(buf), buf_size - strlen(buf),
866 ", pass 2");
867 }
a96b68b7 868 if (bitrate != 0) {
115329f1 869 snprintf(buf + strlen(buf), buf_size - strlen(buf),
a96b68b7 870 ", %d kb/s", bitrate / 1000);
de6d9b64
FB
871 }
872}
873
156e5023
NK
874unsigned avcodec_version( void )
875{
876 return LIBAVCODEC_VERSION_INT;
877}
cf087595 878
de6d9b64
FB
879void avcodec_init(void)
880{
5e534865 881 static int initialized = 0;
0344cd0a 882
5e534865 883 if (initialized != 0)
bb270c08 884 return;
5e534865 885 initialized = 1;
0344cd0a 886
486497e0 887 dsputil_static_init();
de6d9b64
FB
888}
889
1c2a8c7f
MN
890void avcodec_flush_buffers(AVCodecContext *avctx)
891{
7a06ff14
MN
892 if(avctx->codec->flush)
893 avctx->codec->flush(avctx);
1c2a8c7f
MN
894}
895
b100eab8 896void avcodec_default_free_buffers(AVCodecContext *s){
d90cf87b
MN
897 int i, j;
898
899 if(s->internal_buffer==NULL) return;
115329f1 900
d90cf87b
MN
901 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
902 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
903 for(j=0; j<4; j++){
904 av_freep(&buf->base[j]);
905 buf->data[j]= NULL;
906 }
907 }
908 av_freep(&s->internal_buffer);
115329f1 909
d90cf87b
MN
910 s->internal_buffer_count=0;
911}
912
d8085ea7
MN
913char av_get_pict_type_char(int pict_type){
914 switch(pict_type){
fbd4293d
AJ
915 case FF_I_TYPE: return 'I';
916 case FF_P_TYPE: return 'P';
917 case FF_B_TYPE: return 'B';
918 case FF_S_TYPE: return 'S';
919 case FF_SI_TYPE:return 'i';
920 case FF_SP_TYPE:return 'p';
48d533e6 921 case FF_BI_TYPE:return 'b';
c06ccb13 922 default: return '?';
d8085ea7
MN
923 }
924}
925
ac3e1834
BC
926int av_get_bits_per_sample(enum CodecID codec_id){
927 switch(codec_id){
5da71469 928 case CODEC_ID_ADPCM_SBPRO_2:
f1b163e0 929 return 2;
5da71469 930 case CODEC_ID_ADPCM_SBPRO_3:
f1b163e0 931 return 3;
5da71469 932 case CODEC_ID_ADPCM_SBPRO_4:
f1b163e0
AJ
933 case CODEC_ID_ADPCM_CT:
934 return 4;
ac3e1834
BC
935 case CODEC_ID_PCM_ALAW:
936 case CODEC_ID_PCM_MULAW:
937 case CODEC_ID_PCM_S8:
938 case CODEC_ID_PCM_U8:
9d49b8ff 939 case CODEC_ID_PCM_ZORK:
ac3e1834
BC
940 return 8;
941 case CODEC_ID_PCM_S16BE:
942 case CODEC_ID_PCM_S16LE:
725d86bf 943 case CODEC_ID_PCM_S16LE_PLANAR:
ac3e1834
BC
944 case CODEC_ID_PCM_U16BE:
945 case CODEC_ID_PCM_U16LE:
946 return 16;
947 case CODEC_ID_PCM_S24DAUD:
948 case CODEC_ID_PCM_S24BE:
949 case CODEC_ID_PCM_S24LE:
950 case CODEC_ID_PCM_U24BE:
951 case CODEC_ID_PCM_U24LE:
952 return 24;
953 case CODEC_ID_PCM_S32BE:
954 case CODEC_ID_PCM_S32LE:
955 case CODEC_ID_PCM_U32BE:
956 case CODEC_ID_PCM_U32LE:
aa29709e 957 case CODEC_ID_PCM_F32BE:
143a5d6f 958 case CODEC_ID_PCM_F32LE:
ac3e1834 959 return 32;
143a5d6f
PR
960 case CODEC_ID_PCM_F64BE:
961 case CODEC_ID_PCM_F64LE:
962 return 64;
ac3e1834
BC
963 default:
964 return 0;
965 }
966}
967
42c71907
DC
968int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
969 switch (sample_fmt) {
970 case SAMPLE_FMT_U8:
971 return 8;
972 case SAMPLE_FMT_S16:
973 return 16;
42c71907
DC
974 case SAMPLE_FMT_S32:
975 case SAMPLE_FMT_FLT:
976 return 32;
e06b00f3
PR
977 case SAMPLE_FMT_DBL:
978 return 64;
42c71907
DC
979 default:
980 return 0;
981 }
982}
983
b250f9c6 984#if !HAVE_THREADS
ca8ad847 985int avcodec_thread_init(AVCodecContext *s, int thread_count){
2e418f5e 986 s->thread_count = thread_count;
ca8ad847
MN
987 return -1;
988}
989#endif
ad2b531d
MR
990
991unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
992{
993 unsigned int n = 0;
994
995 while(v >= 0xff) {
996 *s++ = 0xff;
997 v -= 0xff;
998 n++;
999 }
1000 *s = v;
1001 n++;
1002 return n;
1003}
1005f542
CH
1004
1005/* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1006 * Also, tries to create file in /tmp first, if possible.
1007 * *prefix can be a character constant; *filename will be allocated internally.
1008 * Returns file descriptor of opened file (or -1 on error)
1009 * and opened file name in **filename. */
1010int av_tempfile(char *prefix, char **filename) {
1011 int fd=-1;
b250f9c6 1012#if !HAVE_MKSTEMP
1005f542
CH
1013 *filename = tempnam(".", prefix);
1014#else
1015 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
f2508b17 1016 *filename = av_malloc(len);
1005f542
CH
1017#endif
1018 /* -----common section-----*/
1019 if (*filename == NULL) {
1020 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1021 return -1;
1022 }
b250f9c6 1023#if !HAVE_MKSTEMP
76353b42 1024 fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
1005f542
CH
1025#else
1026 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1027 fd = mkstemp(*filename);
1028 if (fd < 0) {
1029 snprintf(*filename, len, "./%sXXXXXX", prefix);
1030 fd = mkstemp(*filename);
1031 }
1032#endif
1033 /* -----common section-----*/
1034 if (fd < 0) {
1035 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1036 return -1;
1037 }
1038 return fd; /* success */
1039}
26ef3220
SS
1040
1041typedef struct {
c0ad72a7 1042 const char *abbr;
26ef3220 1043 int width, height;
c0ad72a7
SS
1044} VideoFrameSizeAbbr;
1045
1046typedef struct {
1047 const char *abbr;
1048 int rate_num, rate_den;
1049} VideoFrameRateAbbr;
1050
cf2baeb3 1051static const VideoFrameSizeAbbr video_frame_size_abbrs[] = {
c0ad72a7
SS
1052 { "ntsc", 720, 480 },
1053 { "pal", 720, 576 },
1054 { "qntsc", 352, 240 }, /* VCD compliant NTSC */
1055 { "qpal", 352, 288 }, /* VCD compliant PAL */
1056 { "sntsc", 640, 480 }, /* square pixel NTSC */
1057 { "spal", 768, 576 }, /* square pixel PAL */
1058 { "film", 352, 240 },
1059 { "ntsc-film", 352, 240 },
1060 { "sqcif", 128, 96 },
1061 { "qcif", 176, 144 },
1062 { "cif", 352, 288 },
1063 { "4cif", 704, 576 },
41913a35 1064 { "16cif", 1408,1152 },
c0ad72a7
SS
1065 { "qqvga", 160, 120 },
1066 { "qvga", 320, 240 },
1067 { "vga", 640, 480 },
1068 { "svga", 800, 600 },
1069 { "xga", 1024, 768 },
1070 { "uxga", 1600,1200 },
1071 { "qxga", 2048,1536 },
1072 { "sxga", 1280,1024 },
1073 { "qsxga", 2560,2048 },
1074 { "hsxga", 5120,4096 },
1075 { "wvga", 852, 480 },
1076 { "wxga", 1366, 768 },
1077 { "wsxga", 1600,1024 },
1078 { "wuxga", 1920,1200 },
1079 { "woxga", 2560,1600 },
1080 { "wqsxga", 3200,2048 },
1081 { "wquxga", 3840,2400 },
1082 { "whsxga", 6400,4096 },
1083 { "whuxga", 7680,4800 },
1084 { "cga", 320, 200 },
1085 { "ega", 640, 350 },
1086 { "hd480", 852, 480 },
1087 { "hd720", 1280, 720 },
1088 { "hd1080", 1920,1080 },
1089};
1090
cf2baeb3 1091static const VideoFrameRateAbbr video_frame_rate_abbrs[]= {
c0ad72a7
SS
1092 { "ntsc", 30000, 1001 },
1093 { "pal", 25, 1 },
1094 { "qntsc", 30000, 1001 }, /* VCD compliant NTSC */
1095 { "qpal", 25, 1 }, /* VCD compliant PAL */
1096 { "sntsc", 30000, 1001 }, /* square pixel NTSC */
1097 { "spal", 25, 1 }, /* square pixel PAL */
1098 { "film", 24, 1 },
1099 { "ntsc-film", 24000, 1001 },
26ef3220
SS
1100};
1101
1102int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1103{
1104 int i;
37d3e066 1105 int n = FF_ARRAY_ELEMS(video_frame_size_abbrs);
8468664b 1106 char *p;
26ef3220
SS
1107 int frame_width = 0, frame_height = 0;
1108
1109 for(i=0;i<n;i++) {
c0ad72a7
SS
1110 if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {
1111 frame_width = video_frame_size_abbrs[i].width;
1112 frame_height = video_frame_size_abbrs[i].height;
26ef3220
SS
1113 break;
1114 }
1115 }
1116 if (i == n) {
1117 p = str;
8468664b 1118 frame_width = strtol(p, &p, 10);
26ef3220
SS
1119 if (*p)
1120 p++;
8468664b 1121 frame_height = strtol(p, &p, 10);
26ef3220
SS
1122 }
1123 if (frame_width <= 0 || frame_height <= 0)
1124 return -1;
1125 *width_ptr = frame_width;
1126 *height_ptr = frame_height;
1127 return 0;
1128}
1129
1130int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1131{
1132 int i;
37d3e066 1133 int n = FF_ARRAY_ELEMS(video_frame_rate_abbrs);
26ef3220
SS
1134 char* cp;
1135
1136 /* First, we check our abbreviation table */
c0ad72a7
SS
1137 for (i = 0; i < n; ++i)
1138 if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {
1139 frame_rate->num = video_frame_rate_abbrs[i].rate_num;
1140 frame_rate->den = video_frame_rate_abbrs[i].rate_den;
26ef3220
SS
1141 return 0;
1142 }
1143
1144 /* Then, we try to parse it as fraction */
1145 cp = strchr(arg, '/');
1146 if (!cp)
1147 cp = strchr(arg, ':');
1148 if (cp) {
1149 char* cpp;
1150 frame_rate->num = strtol(arg, &cpp, 10);
1151 if (cpp != arg || cpp == cp)
1152 frame_rate->den = strtol(cp+1, &cpp, 10);
1153 else
1154 frame_rate->num = 0;
1155 }
1156 else {
1157 /* Finally we give up and parse it as double */
38360668 1158 AVRational time_base = av_d2q(strtod(arg, 0), 1001000);
26ef3220
SS
1159 frame_rate->den = time_base.den;
1160 frame_rate->num = time_base.num;
1161 }
1162 if (!frame_rate->num || !frame_rate->den)
1163 return -1;
1164 else
1165 return 0;
1166}
ea779d91 1167
dbbec0c2 1168void ff_log_missing_feature(void *avc, const char *feature, int want_sample)
ea779d91
JR
1169{
1170 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1171 "version to the newest one from SVN. If the problem still "
1172 "occurs, it means that your file has a feature which has not "
1173 "been implemented.", feature);
1174 if(want_sample)
0ba39dd1
KG
1175 ff_log_ask_for_sample(avc, NULL);
1176 else
1177 av_log(avc, AV_LOG_WARNING, "\n");
1178}
1179
1180void ff_log_ask_for_sample(void *avc, const char *msg)
1181{
1182 if (msg)
1183 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1184 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1185 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1186 "and contact the ffmpeg-devel mailing list.\n");
ea779d91 1187}
c895618b
MN
1188
1189static AVHWAccel *first_hwaccel = NULL;
1190
1191void av_register_hwaccel(AVHWAccel *hwaccel)
1192{
1193 AVHWAccel **p = &first_hwaccel;
1194 while (*p)
1195 p = &(*p)->next;
1196 *p = hwaccel;
1197 hwaccel->next = NULL;
1198}
414d9d7f
MN
1199
1200AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1201{
1202 return hwaccel ? hwaccel->next : first_hwaccel;
1203}
6059f13c
MN
1204
1205AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1206{
1207 AVHWAccel *hwaccel=NULL;
1208
1209 while((hwaccel= av_hwaccel_next(hwaccel))){
1210 if ( hwaccel->id == codec_id
1211 && hwaccel->pix_fmt == pix_fmt)
1212 return hwaccel;
1213 }
1214 return NULL;
1215}