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ffmpeg / libavcodec / utils.c @ 91cc5d37

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1 de6d9b64 Fabrice Bellard
/*
2
 * utils for libavcodec
3 406792e7 Diego Biurrun
 * Copyright (c) 2001 Fabrice Bellard
4 8f2ab833 Michael Niedermayer
 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5 de6d9b64 Fabrice Bellard
 *
6 b78e7197 Diego Biurrun
 * This file is part of FFmpeg.
7
 *
8
 * FFmpeg is free software; you can redistribute it and/or
9 ff4ec49e Fabrice Bellard
 * modify it under the terms of the GNU Lesser General Public
10
 * License as published by the Free Software Foundation; either
11 b78e7197 Diego Biurrun
 * version 2.1 of the License, or (at your option) any later version.
12 de6d9b64 Fabrice Bellard
 *
13 b78e7197 Diego Biurrun
 * FFmpeg is distributed in the hope that it will be useful,
14 de6d9b64 Fabrice Bellard
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ff4ec49e Fabrice Bellard
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16
 * Lesser General Public License for more details.
17 de6d9b64 Fabrice Bellard
 *
18 ff4ec49e Fabrice Bellard
 * You should have received a copy of the GNU Lesser General Public
19 b78e7197 Diego Biurrun
 * License along with FFmpeg; if not, write to the Free Software
20 5509bffa Diego Biurrun
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 de6d9b64 Fabrice Bellard
 */
22 115329f1 Diego Biurrun
23 983e3246 Michael Niedermayer
/**
24 bad5537e Diego Biurrun
 * @file libavcodec/utils.c
25 983e3246 Michael Niedermayer
 * utils.
26
 */
27 115329f1 Diego Biurrun
28 7246177d Aurelien Jacobs
/* needed for mkstemp() */
29 d0feff2a Diego Biurrun
#define _XOPEN_SOURCE 600
30 7246177d Aurelien Jacobs
31 7fb94406 Diego Biurrun
#include "libavutil/avstring.h"
32 245976da Diego Biurrun
#include "libavutil/integer.h"
33
#include "libavutil/crc.h"
34 de6d9b64 Fabrice Bellard
#include "avcodec.h"
35 3123dd79 Fabrice Bellard
#include "dsputil.h"
36 6fd46414 Michael Niedermayer
#include "opt.h"
37 db7ae7d1 Vitor Sessak
#include "imgconvert.h"
38 9e82a113 Peter Ross
#include "audioconvert.h"
39 0ba39dd1 Kenan Gillet
#include "internal.h"
40 7246177d Aurelien Jacobs
#include <stdlib.h>
41 9b879566 Michel Bardiaux
#include <stdarg.h>
42 4c263142 Michael Niedermayer
#include <limits.h>
43 860a40c8 Michael Niedermayer
#include <float.h>
44 b250f9c6 Aurelien Jacobs
#if !HAVE_MKSTEMP
45 1005f542 Corey Hickey
#include <fcntl.h>
46
#endif
47 de6d9b64 Fabrice Bellard
48 ddebfb15 Michael Niedermayer
static int volatile entangled_thread_counter=0;
49 f988ce6c Andreas Öman
int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
50
static void *codec_mutex;
51 ddebfb15 Michael Niedermayer
52 5c91a675 Zdenek Kabelac
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
53 8e1e6f31 Fabrice Bellard
{
54 115329f1 Diego Biurrun
    if(min_size < *size)
55 8e1e6f31 Fabrice Bellard
        return ptr;
56 115329f1 Diego Biurrun
57 0ecca7a4 Michael Niedermayer
    *size= FFMAX(17*min_size/16 + 32, min_size);
58 8e1e6f31 Fabrice Bellard
59 978805b2 Michael Niedermayer
    ptr= av_realloc(ptr, *size);
60
    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
61
        *size= 0;
62
63
    return ptr;
64 8e1e6f31 Fabrice Bellard
}
65
66 238ef6da Reimar Döffinger
void av_fast_malloc(void *ptr, unsigned int *size, unsigned int min_size)
67
{
68
    void **p = ptr;
69
    if (min_size < *size)
70
        return;
71
    *size= FFMAX(17*min_size/16 + 32, min_size);
72
    av_free(*p);
73
    *p = av_malloc(*size);
74
    if (!*p) *size = 0;
75
}
76
77 de6d9b64 Fabrice Bellard
/* encoder management */
78 e6df765e Diego Pettenò
static AVCodec *first_avcodec = NULL;
79 de6d9b64 Fabrice Bellard
80 55b9e69a Michael Niedermayer
AVCodec *av_codec_next(AVCodec *c){
81
    if(c) return c->next;
82
    else  return first_avcodec;
83
}
84
85 85662f49 Stefano Sabatini
void avcodec_register(AVCodec *codec)
86 de6d9b64 Fabrice Bellard
{
87
    AVCodec **p;
88 7a961a46 Stefano Sabatini
    avcodec_init();
89 de6d9b64 Fabrice Bellard
    p = &first_avcodec;
90
    while (*p != NULL) p = &(*p)->next;
91 335a761a Stefano Sabatini
    *p = codec;
92
    codec->next = NULL;
93 de6d9b64 Fabrice Bellard
}
94
95 9d385cfe Stefano Sabatini
#if LIBAVCODEC_VERSION_MAJOR < 53
96 85662f49 Stefano Sabatini
void register_avcodec(AVCodec *codec)
97
{
98
    avcodec_register(codec);
99
}
100 9d385cfe Stefano Sabatini
#endif
101 85662f49 Stefano Sabatini
102 21adafec Michael Niedermayer
void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
103
    s->coded_width = width;
104
    s->coded_height= height;
105
    s->width = -((-width )>>s->lowres);
106
    s->height= -((-height)>>s->lowres);
107
}
108
109 d90cf87b Michael Niedermayer
typedef struct InternalBuffer{
110 1e491e29 Michael Niedermayer
    int last_pic_num;
111 d90cf87b Michael Niedermayer
    uint8_t *base[4];
112 1e491e29 Michael Niedermayer
    uint8_t *data[4];
113 237e4938 Michael Niedermayer
    int linesize[4];
114 0701006e Michael Niedermayer
    int width, height;
115
    enum PixelFormat pix_fmt;
116 d90cf87b Michael Niedermayer
}InternalBuffer;
117
118
#define INTERNAL_BUFFER_SIZE 32
119 1e491e29 Michael Niedermayer
120 f0bbfc4a Michael Niedermayer
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
121 115329f1 Diego Biurrun
    int w_align= 1;
122
    int h_align= 1;
123
124 f0bbfc4a Michael Niedermayer
    switch(s->pix_fmt){
125
    case PIX_FMT_YUV420P:
126 71e445fc Diego Biurrun
    case PIX_FMT_YUYV422:
127 ebb177dd Todd Kirby
    case PIX_FMT_UYVY422:
128 f0bbfc4a Michael Niedermayer
    case PIX_FMT_YUV422P:
129
    case PIX_FMT_YUV444P:
130
    case PIX_FMT_GRAY8:
131 34380af0 Kostya Shishkov
    case PIX_FMT_GRAY16BE:
132
    case PIX_FMT_GRAY16LE:
133 f0bbfc4a Michael Niedermayer
    case PIX_FMT_YUVJ420P:
134
    case PIX_FMT_YUVJ422P:
135
    case PIX_FMT_YUVJ444P:
136 b70335a2 Aurelien Jacobs
    case PIX_FMT_YUVA420P:
137 f0bbfc4a Michael Niedermayer
        w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
138
        h_align= 16;
139 c81185a1 Michael Niedermayer
        if(s->codec_id == CODEC_ID_MPEG2VIDEO)
140
            h_align= 32; // interlaced is rounded up to 2 MBs
141 f0bbfc4a Michael Niedermayer
        break;
142
    case PIX_FMT_YUV411P:
143 71e445fc Diego Biurrun
    case PIX_FMT_UYYVYY411:
144 f0bbfc4a Michael Niedermayer
        w_align=32;
145
        h_align=8;
146
        break;
147
    case PIX_FMT_YUV410P:
148
        if(s->codec_id == CODEC_ID_SVQ1){
149
            w_align=64;
150
            h_align=64;
151
        }
152 d99fbbf4 Roberto Togni
    case PIX_FMT_RGB555:
153
        if(s->codec_id == CODEC_ID_RPZA){
154
            w_align=4;
155
            h_align=4;
156
        }
157
    case PIX_FMT_PAL8:
158 6337178b Michael Niedermayer
    case PIX_FMT_BGR8:
159
    case PIX_FMT_RGB8:
160 d99fbbf4 Roberto Togni
        if(s->codec_id == CODEC_ID_SMC){
161
            w_align=4;
162
            h_align=4;
163
        }
164 f0bbfc4a Michael Niedermayer
        break;
165 c31b8121 Roberto Togni
    case PIX_FMT_BGR24:
166
        if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
167
            w_align=4;
168
            h_align=4;
169
        }
170
        break;
171 f0bbfc4a Michael Niedermayer
    default:
172
        w_align= 1;
173
        h_align= 1;
174
        break;
175
    }
176
177 ef516f73 David Conrad
    *width = FFALIGN(*width , w_align);
178
    *height= FFALIGN(*height, h_align);
179 ae4ffe9f Michael Niedermayer
    if(s->codec_id == CODEC_ID_H264)
180
        *height+=2; // some of the optimized chroma MC reads one line too much
181 f0bbfc4a Michael Niedermayer
}
182
183 0ecca7a4 Michael Niedermayer
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
184 445f0a8b Michael Niedermayer
    if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/8)
185 0ecca7a4 Michael Niedermayer
        return 0;
186 115329f1 Diego Biurrun
187 0ecca7a4 Michael Niedermayer
    av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
188
    return -1;
189
}
190
191 492cd3a9 Michael Niedermayer
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
192 1e491e29 Michael Niedermayer
    int i;
193 f0bbfc4a Michael Niedermayer
    int w= s->width;
194
    int h= s->height;
195 d90cf87b Michael Niedermayer
    InternalBuffer *buf;
196 237e4938 Michael Niedermayer
    int *picture_number;
197 0ecca7a4 Michael Niedermayer
198 65d999d6 Michel Bardiaux
    if(pic->data[0]!=NULL) {
199
        av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
200
        return -1;
201
    }
202
    if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
203
        av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
204
        return -1;
205
    }
206 1e491e29 Michael Niedermayer
207 0ecca7a4 Michael Niedermayer
    if(avcodec_check_dimensions(s,w,h))
208
        return -1;
209
210 d90cf87b Michael Niedermayer
    if(s->internal_buffer==NULL){
211 6ebc89ac Michael Niedermayer
        s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
212 d90cf87b Michael Niedermayer
    }
213
#if 0
214
    s->internal_buffer= av_fast_realloc(
215 115329f1 Diego Biurrun
        s->internal_buffer,
216
        &s->internal_buffer_size,
217 d90cf87b Michael Niedermayer
        sizeof(InternalBuffer)*FFMAX(99,  s->internal_buffer_count+1)/*FIXME*/
218
        );
219
#endif
220 115329f1 Diego Biurrun
221 d90cf87b Michael Niedermayer
    buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
222 6ebc89ac Michael Niedermayer
    picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
223 237e4938 Michael Niedermayer
    (*picture_number)++;
224 115329f1 Diego Biurrun
225 0701006e Michael Niedermayer
    if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
226
        for(i=0; i<4; i++){
227
            av_freep(&buf->base[i]);
228
            buf->data[i]= NULL;
229
        }
230
    }
231
232 d90cf87b Michael Niedermayer
    if(buf->base[0]){
233 237e4938 Michael Niedermayer
        pic->age= *picture_number - buf->last_pic_num;
234
        buf->last_pic_num= *picture_number;
235 1e491e29 Michael Niedermayer
    }else{
236 f0bbfc4a Michael Niedermayer
        int h_chroma_shift, v_chroma_shift;
237 db7ae7d1 Vitor Sessak
        int size[4] = {0};
238
        int tmpsize;
239 c9d6e847 Reimar Döffinger
        int unaligned;
240 c7622f9a Michael Niedermayer
        AVPicture picture;
241 503bc402 Michael Niedermayer
        int stride_align[4];
242 c7622f9a Michael Niedermayer
243 1e491e29 Michael Niedermayer
        avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
244 f0bbfc4a Michael Niedermayer
245
        avcodec_align_dimensions(s, &w, &h);
246 115329f1 Diego Biurrun
247 1e491e29 Michael Niedermayer
        if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
248
            w+= EDGE_WIDTH*2;
249
            h+= EDGE_WIDTH*2;
250
        }
251 5b67307a Loren Merritt
252 c9d6e847 Reimar Döffinger
        do {
253
            // NOTE: do not align linesizes individually, this breaks e.g. assumptions
254
            // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
255 45bae968 Reimar Döffinger
            ff_fill_linesize(&picture, s->pix_fmt, w);
256 c9d6e847 Reimar Döffinger
            // increase alignment of w for next try (rhs gives the lowest bit set in w)
257
            w += w & ~(w-1);
258 db7ae7d1 Vitor Sessak
259 c9d6e847 Reimar Döffinger
            unaligned = 0;
260 45bae968 Reimar Döffinger
            for (i=0; i<4; i++){
261 503bc402 Michael Niedermayer
//STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
262
//we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
263
//picture size unneccessarily in some cases. The solution here is not
264
//pretty and better ideas are welcome!
265 b250f9c6 Aurelien Jacobs
#if HAVE_MMX
266 45bae968 Reimar Döffinger
                if(s->codec_id == CODEC_ID_SVQ1)
267
                    stride_align[i]= 16;
268
                else
269 503bc402 Michael Niedermayer
#endif
270 45bae968 Reimar Döffinger
                stride_align[i] = STRIDE_ALIGN;
271 c9d6e847 Reimar Döffinger
                unaligned |= picture.linesize[i] % stride_align[i];
272 45bae968 Reimar Döffinger
            }
273 c9d6e847 Reimar Döffinger
        } while (unaligned);
274 db7ae7d1 Vitor Sessak
275
        tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h);
276 f8c96d01 Reimar Döffinger
        if (tmpsize < 0)
277
            return -1;
278 db7ae7d1 Vitor Sessak
279
        for (i=0; i<3 && picture.data[i+1]; i++)
280
            size[i] = picture.data[i+1] - picture.data[i];
281 cf73e32a Vitor Sessak
        size[i] = tmpsize - (picture.data[i] - picture.data[0]);
282 c7622f9a Michael Niedermayer
283 d90cf87b Michael Niedermayer
        buf->last_pic_num= -256*256*256*64;
284 c7622f9a Michael Niedermayer
        memset(buf->base, 0, sizeof(buf->base));
285
        memset(buf->data, 0, sizeof(buf->data));
286 1e491e29 Michael Niedermayer
287 b70335a2 Aurelien Jacobs
        for(i=0; i<4 && size[i]; i++){
288 2c19981a Michael Niedermayer
            const int h_shift= i==0 ? 0 : h_chroma_shift;
289
            const int v_shift= i==0 ? 0 : v_chroma_shift;
290 1e491e29 Michael Niedermayer
291 c7622f9a Michael Niedermayer
            buf->linesize[i]= picture.linesize[i];
292 1e491e29 Michael Niedermayer
293 c7622f9a Michael Niedermayer
            buf->base[i]= av_malloc(size[i]+16); //FIXME 16
294 d90cf87b Michael Niedermayer
            if(buf->base[i]==NULL) return -1;
295 c7622f9a Michael Niedermayer
            memset(buf->base[i], 128, size[i]);
296
297 6337178b Michael Niedermayer
            // no edge if EDEG EMU or not planar YUV
298
            if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
299 d90cf87b Michael Niedermayer
                buf->data[i] = buf->base[i];
300 1e491e29 Michael Niedermayer
            else
301 ef516f73 David Conrad
                buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
302 1e491e29 Michael Niedermayer
        }
303 6337178b Michael Niedermayer
        if(size[1] && !size[2])
304
            ff_set_systematic_pal((uint32_t*)buf->data[1], s->pix_fmt);
305 0701006e Michael Niedermayer
        buf->width  = s->width;
306
        buf->height = s->height;
307
        buf->pix_fmt= s->pix_fmt;
308 1e491e29 Michael Niedermayer
        pic->age= 256*256*256*64;
309
    }
310 237e4938 Michael Niedermayer
    pic->type= FF_BUFFER_TYPE_INTERNAL;
311 1e491e29 Michael Niedermayer
312 d90cf87b Michael Niedermayer
    for(i=0; i<4; i++){
313
        pic->base[i]= buf->base[i];
314
        pic->data[i]= buf->data[i];
315 237e4938 Michael Niedermayer
        pic->linesize[i]= buf->linesize[i];
316 d90cf87b Michael Niedermayer
    }
317
    s->internal_buffer_count++;
318
319 79de84f2 Michael Niedermayer
    pic->reordered_opaque= s->reordered_opaque;
320
321 385c820b Alexander Strange
    if(s->debug&FF_DEBUG_BUFFERS)
322
        av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
323
324 1e491e29 Michael Niedermayer
    return 0;
325
}
326
327 492cd3a9 Michael Niedermayer
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
328 1e491e29 Michael Niedermayer
    int i;
329 6829ac8d Aurelien Jacobs
    InternalBuffer *buf, *last;
330 d90cf87b Michael Niedermayer
331 4e00e76b Michael Niedermayer
    assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
332 59c673d5 Michael Niedermayer
    assert(s->internal_buffer_count);
333 d90cf87b Michael Niedermayer
334 b1609412 Fabrice Bellard
    buf = NULL; /* avoids warning */
335 d90cf87b Michael Niedermayer
    for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
336
        buf= &((InternalBuffer*)s->internal_buffer)[i];
337
        if(buf->data[0] == pic->data[0])
338
            break;
339
    }
340
    assert(i < s->internal_buffer_count);
341
    s->internal_buffer_count--;
342
    last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
343
344 6829ac8d Aurelien Jacobs
    FFSWAP(InternalBuffer, *buf, *last);
345 d90cf87b Michael Niedermayer
346 b70335a2 Aurelien Jacobs
    for(i=0; i<4; i++){
347 1e491e29 Michael Niedermayer
        pic->data[i]=NULL;
348 d90cf87b Michael Niedermayer
//        pic->base[i]=NULL;
349
    }
350 1e491e29 Michael Niedermayer
//printf("R%X\n", pic->opaque);
351 385c820b Alexander Strange
352
    if(s->debug&FF_DEBUG_BUFFERS)
353
        av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
354 1e491e29 Michael Niedermayer
}
355
356 e1c2a5a0 Roberto Togni
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
357
    AVFrame temp_pic;
358
    int i;
359
360
    /* If no picture return a new buffer */
361
    if(pic->data[0] == NULL) {
362
        /* We will copy from buffer, so must be readable */
363
        pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
364
        return s->get_buffer(s, pic);
365
    }
366
367
    /* If internal buffer type return the same buffer */
368
    if(pic->type == FF_BUFFER_TYPE_INTERNAL)
369
        return 0;
370
371
    /*
372
     * Not internal type and reget_buffer not overridden, emulate cr buffer
373
     */
374
    temp_pic = *pic;
375
    for(i = 0; i < 4; i++)
376
        pic->data[i] = pic->base[i] = NULL;
377
    pic->opaque = NULL;
378
    /* Allocate new frame */
379
    if (s->get_buffer(s, pic))
380
        return -1;
381
    /* Copy image data from old buffer to new buffer */
382 636d6a4a Panagiotis Issaris
    av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
383 e1c2a5a0 Roberto Togni
             s->height);
384
    s->release_buffer(s, &temp_pic); // Release old frame
385
    return 0;
386
}
387
388 3a84713a Roman Shaposhnik
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
389 9c3d33d6 Michael Niedermayer
    int i;
390
391
    for(i=0; i<count; i++){
392 3a84713a Roman Shaposhnik
        int r= func(c, (char*)arg + i*size);
393 9c3d33d6 Michael Niedermayer
        if(ret) ret[i]= r;
394
    }
395
    return 0;
396
}
397
398 8d23a86f Reimar Döffinger
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
399
    int i;
400
401
    for(i=0; i<count; i++){
402
        int r= func(c, arg, i, 0);
403
        if(ret) ret[i]= r;
404
    }
405
    return 0;
406
}
407
408 c269cf68 Michael Niedermayer
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
409
    while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
410
        ++fmt;
411 a33c7159 Michael Niedermayer
    return fmt[0];
412
}
413
414 9740beff Michael Niedermayer
void avcodec_get_frame_defaults(AVFrame *pic){
415
    memset(pic, 0, sizeof(AVFrame));
416
417
    pic->pts= AV_NOPTS_VALUE;
418 c342499d Michael Niedermayer
    pic->key_frame= 1;
419 9740beff Michael Niedermayer
}
420
421 492cd3a9 Michael Niedermayer
AVFrame *avcodec_alloc_frame(void){
422 9740beff Michael Niedermayer
    AVFrame *pic= av_malloc(sizeof(AVFrame));
423 115329f1 Diego Biurrun
424 9740beff Michael Niedermayer
    if(pic==NULL) return NULL;
425 115329f1 Diego Biurrun
426 9740beff Michael Niedermayer
    avcodec_get_frame_defaults(pic);
427 115329f1 Diego Biurrun
428 1e491e29 Michael Niedermayer
    return pic;
429
}
430
431 5e4c7ca2 Ramiro Polla
int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
432 de6d9b64 Fabrice Bellard
{
433 ddebfb15 Michael Niedermayer
    int ret= -1;
434 115329f1 Diego Biurrun
435 f988ce6c Andreas Öman
    /* If there is a user-supplied mutex locking routine, call it. */
436
    if (ff_lockmgr_cb) {
437
        if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
438
            return -1;
439
    }
440
441 ddebfb15 Michael Niedermayer
    entangled_thread_counter++;
442
    if(entangled_thread_counter != 1){
443
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
444
        goto end;
445
    }
446 de6d9b64 Fabrice Bellard
447 9c87b8f7 Reimar Döffinger
    if(avctx->codec || !codec)
448 ddebfb15 Michael Niedermayer
        goto end;
449 09770af8 Michael Niedermayer
450 0edf8a7a Philip Gladstone
    if (codec->priv_data_size > 0) {
451
        avctx->priv_data = av_mallocz(codec->priv_data_size);
452 90f06cea Panagiotis Issaris
        if (!avctx->priv_data) {
453
            ret = AVERROR(ENOMEM);
454 ddebfb15 Michael Niedermayer
            goto end;
455 90f06cea Panagiotis Issaris
        }
456 0edf8a7a Philip Gladstone
    } else {
457
        avctx->priv_data = NULL;
458
    }
459 21adafec Michael Niedermayer
460
    if(avctx->coded_width && avctx->coded_height)
461
        avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
462
    else if(avctx->width && avctx->height)
463
        avcodec_set_dimensions(avctx, avctx->width, avctx->height);
464
465 fa77dd63 Peter Ross
#define SANE_NB_CHANNELS 128U
466 40461e54 Diego Biurrun
    if (((avctx->coded_width || avctx->coded_height)
467
        && avcodec_check_dimensions(avctx, avctx->coded_width, avctx->coded_height))
468
        || avctx->channels > SANE_NB_CHANNELS) {
469 7868349a Panagiotis Issaris
        ret = AVERROR(EINVAL);
470 2a9b5c9b Michael Niedermayer
        goto free_and_end;
471 0ecca7a4 Michael Niedermayer
    }
472
473 b5c85991 Michael Niedermayer
    avctx->codec = codec;
474 681c180d Reimar Döffinger
    if ((avctx->codec_type == CODEC_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
475
        avctx->codec_id == CODEC_ID_NONE) {
476
        avctx->codec_type = codec->type;
477
        avctx->codec_id   = codec->id;
478
    }
479 4c0dda2b Michael Niedermayer
    if(avctx->codec_id != codec->id || avctx->codec_type != codec->type){
480
        av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
481 2a9b5c9b Michael Niedermayer
        goto free_and_end;
482 4c0dda2b Michael Niedermayer
    }
483 b5c85991 Michael Niedermayer
    avctx->frame_number = 0;
484 6e546aaa Michael Niedermayer
    if(avctx->codec->init){
485 2de4f9eb Michael Niedermayer
        ret = avctx->codec->init(avctx);
486
        if (ret < 0) {
487 2a9b5c9b Michael Niedermayer
            goto free_and_end;
488 2de4f9eb Michael Niedermayer
        }
489 6e546aaa Michael Niedermayer
    }
490 ddebfb15 Michael Niedermayer
    ret=0;
491
end:
492
    entangled_thread_counter--;
493 f988ce6c Andreas Öman
494
    /* Release any user-supplied mutex. */
495
    if (ff_lockmgr_cb) {
496
        (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
497
    }
498 ddebfb15 Michael Niedermayer
    return ret;
499 2a9b5c9b Michael Niedermayer
free_and_end:
500
    av_freep(&avctx->priv_data);
501
    avctx->codec= NULL;
502
    goto end;
503 de6d9b64 Fabrice Bellard
}
504
505 5e4c7ca2 Ramiro Polla
int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
506 de6d9b64 Fabrice Bellard
                         const short *samples)
507
{
508 0ecca7a4 Michael Niedermayer
    if(buf_size < FF_MIN_BUFFER_SIZE && 0){
509 5286d11f Michel Bardiaux
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
510 0ecca7a4 Michael Niedermayer
        return -1;
511
    }
512 6f824977 Michael Niedermayer
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
513 8eb027c8 Baptiste Coudurier
        int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
514 6f824977 Michael Niedermayer
        avctx->frame_number++;
515
        return ret;
516
    }else
517
        return 0;
518 de6d9b64 Fabrice Bellard
}
519
520 5e4c7ca2 Ramiro Polla
int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
521 492cd3a9 Michael Niedermayer
                         const AVFrame *pict)
522 de6d9b64 Fabrice Bellard
{
523 0ecca7a4 Michael Niedermayer
    if(buf_size < FF_MIN_BUFFER_SIZE){
524 5286d11f Michel Bardiaux
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
525 0ecca7a4 Michael Niedermayer
        return -1;
526
    }
527
    if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
528
        return -1;
529 6f824977 Michael Niedermayer
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
530 8eb027c8 Baptiste Coudurier
        int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
531 6f824977 Michael Niedermayer
        avctx->frame_number++;
532 bb628dae Diego Biurrun
        emms_c(); //needed to avoid an emms_c() call before every return;
533 115329f1 Diego Biurrun
534 6f824977 Michael Niedermayer
        return ret;
535
    }else
536
        return 0;
537 de6d9b64 Fabrice Bellard
}
538
539 115329f1 Diego Biurrun
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
540 240c1657 Fabrice Bellard
                            const AVSubtitle *sub)
541
{
542
    int ret;
543 9413db9e Björn Axelsson
    if(sub->start_display_time) {
544
        av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
545
        return -1;
546
    }
547 505aa6c9 Björn Axelsson
    if(sub->num_rects == 0 || !sub->rects)
548
        return -1;
549 8eb027c8 Baptiste Coudurier
    ret = avctx->codec->encode(avctx, buf, buf_size, sub);
550 240c1657 Fabrice Bellard
    avctx->frame_number++;
551
    return ret;
552
}
553
554 7a00bbad Thilo Borgmann
#if LIBAVCODEC_VERSION_MAJOR < 53
555 5e4c7ca2 Ramiro Polla
int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
556 de6d9b64 Fabrice Bellard
                         int *got_picture_ptr,
557 2efa7fd1 Michael Niedermayer
                         const uint8_t *buf, int buf_size)
558 de6d9b64 Fabrice Bellard
{
559 7a00bbad Thilo Borgmann
    AVPacket avpkt;
560
    av_init_packet(&avpkt);
561
    avpkt.data = buf;
562
    avpkt.size = buf_size;
563 10f9ff9b Reimar Döffinger
    // HACK for CorePNG to decode as normal PNG by default
564
    avpkt.flags = AV_PKT_FLAG_KEY;
565 7a00bbad Thilo Borgmann
566
    return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
567
}
568
#endif
569
570
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
571
                         int *got_picture_ptr,
572
                         AVPacket *avpkt)
573
{
574 de6d9b64 Fabrice Bellard
    int ret;
575 115329f1 Diego Biurrun
576 53db1cae Michael Niedermayer
    *got_picture_ptr= 0;
577 0ecca7a4 Michael Niedermayer
    if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
578
        return -1;
579 7a00bbad Thilo Borgmann
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
580 115329f1 Diego Biurrun
        ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
581 7a00bbad Thilo Borgmann
                                avpkt);
582 6bb925f4 Michael Niedermayer
583 bb628dae Diego Biurrun
        emms_c(); //needed to avoid an emms_c() call before every return;
584 115329f1 Diego Biurrun
585
        if (*got_picture_ptr)
586 934982c4 Michael Niedermayer
            avctx->frame_number++;
587
    }else
588
        ret= 0;
589
590 de6d9b64 Fabrice Bellard
    return ret;
591
}
592
593 7a00bbad Thilo Borgmann
#if LIBAVCODEC_VERSION_MAJOR < 53
594 5e4c7ca2 Ramiro Polla
int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
595 de6d9b64 Fabrice Bellard
                         int *frame_size_ptr,
596 2efa7fd1 Michael Niedermayer
                         const uint8_t *buf, int buf_size)
597 de6d9b64 Fabrice Bellard
{
598 7a00bbad Thilo Borgmann
    AVPacket avpkt;
599
    av_init_packet(&avpkt);
600
    avpkt.data = buf;
601
    avpkt.size = buf_size;
602
603
    return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
604
}
605
#endif
606
607
int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
608
                         int *frame_size_ptr,
609
                         AVPacket *avpkt)
610
{
611 de6d9b64 Fabrice Bellard
    int ret;
612
613 7a00bbad Thilo Borgmann
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
614 9c856d62 Michael Niedermayer
        //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
615
        if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
616
            av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
617
            return -1;
618
        }
619
        if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
620 81fc2f37 Kostya Shishkov
        *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
621 9c856d62 Michael Niedermayer
            av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
622
            return -1;
623
        }
624
625 7a00bbad Thilo Borgmann
        ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
626 fec9ccb7 Michael Niedermayer
        avctx->frame_number++;
627 ac66834c Michael Niedermayer
    }else{
628 fec9ccb7 Michael Niedermayer
        ret= 0;
629 ac66834c Michael Niedermayer
        *frame_size_ptr=0;
630
    }
631 de6d9b64 Fabrice Bellard
    return ret;
632
}
633
634 7a00bbad Thilo Borgmann
#if LIBAVCODEC_VERSION_MAJOR < 53
635 240c1657 Fabrice Bellard
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
636
                            int *got_sub_ptr,
637
                            const uint8_t *buf, int buf_size)
638
{
639 7a00bbad Thilo Borgmann
    AVPacket avpkt;
640
    av_init_packet(&avpkt);
641
    avpkt.data = buf;
642
    avpkt.size = buf_size;
643
644
    return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
645
}
646
#endif
647
648
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
649
                            int *got_sub_ptr,
650
                            AVPacket *avpkt)
651
{
652 240c1657 Fabrice Bellard
    int ret;
653
654
    *got_sub_ptr = 0;
655 7a00bbad Thilo Borgmann
    ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
656 240c1657 Fabrice Bellard
    if (*got_sub_ptr)
657
        avctx->frame_number++;
658
    return ret;
659
}
660
661 de6d9b64 Fabrice Bellard
int avcodec_close(AVCodecContext *avctx)
662
{
663 f988ce6c Andreas Öman
    /* If there is a user-supplied mutex locking routine, call it. */
664
    if (ff_lockmgr_cb) {
665
        if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
666
            return -1;
667
    }
668
669 ddebfb15 Michael Niedermayer
    entangled_thread_counter++;
670
    if(entangled_thread_counter != 1){
671
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
672
        entangled_thread_counter--;
673
        return -1;
674
    }
675
676 49fb20cb Aurelien Jacobs
    if (HAVE_THREADS && avctx->thread_opaque)
677 ab2cfc59 Janne Grunau
        avcodec_thread_free(avctx);
678 de6d9b64 Fabrice Bellard
    if (avctx->codec->close)
679
        avctx->codec->close(avctx);
680 eea8c08f Michael Niedermayer
    avcodec_default_free_buffers(avctx);
681 3123dd79 Fabrice Bellard
    av_freep(&avctx->priv_data);
682 de6d9b64 Fabrice Bellard
    avctx->codec = NULL;
683 ddebfb15 Michael Niedermayer
    entangled_thread_counter--;
684 f988ce6c Andreas Öman
685
    /* Release any user-supplied mutex. */
686
    if (ff_lockmgr_cb) {
687
        (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
688
    }
689 de6d9b64 Fabrice Bellard
    return 0;
690
}
691
692
AVCodec *avcodec_find_encoder(enum CodecID id)
693
{
694
    AVCodec *p;
695
    p = first_avcodec;
696
    while (p) {
697
        if (p->encode != NULL && p->id == id)
698
            return p;
699
        p = p->next;
700
    }
701
    return NULL;
702
}
703
704 98f3b098 Arpi
AVCodec *avcodec_find_encoder_by_name(const char *name)
705
{
706
    AVCodec *p;
707 fc228c90 Aurelien Jacobs
    if (!name)
708
        return NULL;
709 98f3b098 Arpi
    p = first_avcodec;
710
    while (p) {
711
        if (p->encode != NULL && strcmp(name,p->name) == 0)
712
            return p;
713
        p = p->next;
714
    }
715
    return NULL;
716
}
717
718 de6d9b64 Fabrice Bellard
AVCodec *avcodec_find_decoder(enum CodecID id)
719
{
720
    AVCodec *p;
721
    p = first_avcodec;
722
    while (p) {
723
        if (p->decode != NULL && p->id == id)
724
            return p;
725
        p = p->next;
726
    }
727
    return NULL;
728
}
729
730
AVCodec *avcodec_find_decoder_by_name(const char *name)
731
{
732
    AVCodec *p;
733 fc228c90 Aurelien Jacobs
    if (!name)
734
        return NULL;
735 de6d9b64 Fabrice Bellard
    p = first_avcodec;
736
    while (p) {
737
        if (p->decode != NULL && strcmp(name,p->name) == 0)
738
            return p;
739
        p = p->next;
740
    }
741
    return NULL;
742
}
743
744
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
745
{
746
    const char *codec_name;
747
    AVCodec *p;
748
    char buf1[32];
749 a96b68b7 Fabrice Bellard
    int bitrate;
750 59771f71 Michel Bardiaux
    AVRational display_aspect_ratio;
751 de6d9b64 Fabrice Bellard
752
    if (encode)
753
        p = avcodec_find_encoder(enc->codec_id);
754
    else
755
        p = avcodec_find_decoder(enc->codec_id);
756
757
    if (p) {
758
        codec_name = p->name;
759 985180a1 Fabrice Bellard
    } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
760
        /* fake mpeg2 transport stream codec (currently not
761
           registered) */
762
        codec_name = "mpeg2ts";
763 de6d9b64 Fabrice Bellard
    } else if (enc->codec_name[0] != '\0') {
764
        codec_name = enc->codec_name;
765
    } else {
766
        /* output avi tags */
767 115329f1 Diego Biurrun
        if(   isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
768 b983a5c6 Michael Niedermayer
           && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
769 115329f1 Diego Biurrun
            snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
770 de6d9b64 Fabrice Bellard
                     enc->codec_tag & 0xff,
771
                     (enc->codec_tag >> 8) & 0xff,
772
                     (enc->codec_tag >> 16) & 0xff,
773 b983a5c6 Michael Niedermayer
                     (enc->codec_tag >> 24) & 0xff,
774
                      enc->codec_tag);
775 de6d9b64 Fabrice Bellard
        } else {
776
            snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
777
        }
778
        codec_name = buf1;
779
    }
780
781
    switch(enc->codec_type) {
782
    case CODEC_TYPE_VIDEO:
783
        snprintf(buf, buf_size,
784
                 "Video: %s%s",
785 7d1c3fc1 Michael Niedermayer
                 codec_name, enc->mb_decision ? " (hq)" : "");
786 82c0c4ba Michael Niedermayer
        if (enc->pix_fmt != PIX_FMT_NONE) {
787 cf087595 Fabrice Bellard
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
788
                     ", %s",
789 9bbffbb1 Fabrice Bellard
                     avcodec_get_pix_fmt_name(enc->pix_fmt));
790 cf087595 Fabrice Bellard
        }
791 de6d9b64 Fabrice Bellard
        if (enc->width) {
792
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
793 21189011 Michael Niedermayer
                     ", %dx%d",
794
                     enc->width, enc->height);
795 7ee4dd02 Baptiste Coudurier
            if (enc->sample_aspect_ratio.num) {
796 cbaf50f8 Baptiste Coudurier
                av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
797
                          enc->width*enc->sample_aspect_ratio.num,
798
                          enc->height*enc->sample_aspect_ratio.den,
799
                          1024*1024);
800
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
801
                         " [PAR %d:%d DAR %d:%d]",
802
                         enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
803
                         display_aspect_ratio.num, display_aspect_ratio.den);
804 7ee4dd02 Baptiste Coudurier
            }
805 a309073b Måns Rullgård
            if(av_log_get_level() >= AV_LOG_DEBUG){
806 9ce6c138 Aurelien Jacobs
                int g= av_gcd(enc->time_base.num, enc->time_base.den);
807 21189011 Michael Niedermayer
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
808
                     ", %d/%d",
809
                     enc->time_base.num/g, enc->time_base.den/g);
810
            }
811 de6d9b64 Fabrice Bellard
        }
812 4bfad535 Fabrice Bellard
        if (encode) {
813
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
814
                     ", q=%d-%d", enc->qmin, enc->qmax);
815
        }
816 a96b68b7 Fabrice Bellard
        bitrate = enc->bit_rate;
817 de6d9b64 Fabrice Bellard
        break;
818
    case CODEC_TYPE_AUDIO:
819
        snprintf(buf, buf_size,
820
                 "Audio: %s",
821
                 codec_name);
822
        if (enc->sample_rate) {
823
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
824 0d72e7d0 Peter Ross
                     ", %d Hz", enc->sample_rate);
825 de6d9b64 Fabrice Bellard
        }
826 0d72e7d0 Peter Ross
        av_strlcat(buf, ", ", buf_size);
827
        avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
828 9e82a113 Peter Ross
        if (enc->sample_fmt != SAMPLE_FMT_NONE) {
829
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
830
                     ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt));
831
        }
832 115329f1 Diego Biurrun
833 a96b68b7 Fabrice Bellard
        /* for PCM codecs, compute bitrate directly */
834
        switch(enc->codec_id) {
835 143a5d6f Peter Ross
        case CODEC_ID_PCM_F64BE:
836
        case CODEC_ID_PCM_F64LE:
837
            bitrate = enc->sample_rate * enc->channels * 64;
838
            break;
839 b461b3bc Reimar Döffinger
        case CODEC_ID_PCM_S32LE:
840
        case CODEC_ID_PCM_S32BE:
841
        case CODEC_ID_PCM_U32LE:
842
        case CODEC_ID_PCM_U32BE:
843 aa29709e Peter Ross
        case CODEC_ID_PCM_F32BE:
844 143a5d6f Peter Ross
        case CODEC_ID_PCM_F32LE:
845 b461b3bc Reimar Döffinger
            bitrate = enc->sample_rate * enc->channels * 32;
846
            break;
847
        case CODEC_ID_PCM_S24LE:
848
        case CODEC_ID_PCM_S24BE:
849
        case CODEC_ID_PCM_U24LE:
850
        case CODEC_ID_PCM_U24BE:
851
        case CODEC_ID_PCM_S24DAUD:
852
            bitrate = enc->sample_rate * enc->channels * 24;
853
            break;
854 a96b68b7 Fabrice Bellard
        case CODEC_ID_PCM_S16LE:
855
        case CODEC_ID_PCM_S16BE:
856 725d86bf Aurelien Jacobs
        case CODEC_ID_PCM_S16LE_PLANAR:
857 a96b68b7 Fabrice Bellard
        case CODEC_ID_PCM_U16LE:
858
        case CODEC_ID_PCM_U16BE:
859 a190b7e9 Fabrice Bellard
            bitrate = enc->sample_rate * enc->channels * 16;
860 a96b68b7 Fabrice Bellard
            break;
861
        case CODEC_ID_PCM_S8:
862
        case CODEC_ID_PCM_U8:
863
        case CODEC_ID_PCM_ALAW:
864
        case CODEC_ID_PCM_MULAW:
865 9d49b8ff Peter Ross
        case CODEC_ID_PCM_ZORK:
866 a190b7e9 Fabrice Bellard
            bitrate = enc->sample_rate * enc->channels * 8;
867 a96b68b7 Fabrice Bellard
            break;
868
        default:
869
            bitrate = enc->bit_rate;
870
            break;
871
        }
872 de6d9b64 Fabrice Bellard
        break;
873 985180a1 Fabrice Bellard
    case CODEC_TYPE_DATA:
874
        snprintf(buf, buf_size, "Data: %s", codec_name);
875 240c1657 Fabrice Bellard
        bitrate = enc->bit_rate;
876
        break;
877
    case CODEC_TYPE_SUBTITLE:
878
        snprintf(buf, buf_size, "Subtitle: %s", codec_name);
879 985180a1 Fabrice Bellard
        bitrate = enc->bit_rate;
880
        break;
881 f8d7c9d3 Evgeniy Stepanov
    case CODEC_TYPE_ATTACHMENT:
882
        snprintf(buf, buf_size, "Attachment: %s", codec_name);
883
        bitrate = enc->bit_rate;
884
        break;
885 de6d9b64 Fabrice Bellard
    default:
886 9fe5a7b8 Michael Niedermayer
        snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
887
        return;
888 de6d9b64 Fabrice Bellard
    }
889 4bfad535 Fabrice Bellard
    if (encode) {
890
        if (enc->flags & CODEC_FLAG_PASS1)
891
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
892
                     ", pass 1");
893
        if (enc->flags & CODEC_FLAG_PASS2)
894
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
895
                     ", pass 2");
896
    }
897 a96b68b7 Fabrice Bellard
    if (bitrate != 0) {
898 115329f1 Diego Biurrun
        snprintf(buf + strlen(buf), buf_size - strlen(buf),
899 a96b68b7 Fabrice Bellard
                 ", %d kb/s", bitrate / 1000);
900 de6d9b64 Fabrice Bellard
    }
901
}
902
903 156e5023 Nick Kurshev
unsigned avcodec_version( void )
904
{
905
  return LIBAVCODEC_VERSION_INT;
906
}
907 cf087595 Fabrice Bellard
908 de6d9b64 Fabrice Bellard
void avcodec_init(void)
909
{
910 5e534865 Diego Biurrun
    static int initialized = 0;
911 0344cd0a Alex Beregszaszi
912 5e534865 Diego Biurrun
    if (initialized != 0)
913 bb270c08 Diego Biurrun
        return;
914 5e534865 Diego Biurrun
    initialized = 1;
915 0344cd0a Alex Beregszaszi
916 486497e0 Måns Rullgård
    dsputil_static_init();
917 de6d9b64 Fabrice Bellard
}
918
919 1c2a8c7f Michael Niedermayer
void avcodec_flush_buffers(AVCodecContext *avctx)
920
{
921 7a06ff14 Michael Niedermayer
    if(avctx->codec->flush)
922
        avctx->codec->flush(avctx);
923 1c2a8c7f Michael Niedermayer
}
924
925 b100eab8 Michael Niedermayer
void avcodec_default_free_buffers(AVCodecContext *s){
926 d90cf87b Michael Niedermayer
    int i, j;
927
928
    if(s->internal_buffer==NULL) return;
929 115329f1 Diego Biurrun
930 ea09f691 Reimar Döffinger
    if (s->internal_buffer_count)
931
        av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
932 d90cf87b Michael Niedermayer
    for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
933
        InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
934
        for(j=0; j<4; j++){
935
            av_freep(&buf->base[j]);
936
            buf->data[j]= NULL;
937
        }
938
    }
939
    av_freep(&s->internal_buffer);
940 115329f1 Diego Biurrun
941 d90cf87b Michael Niedermayer
    s->internal_buffer_count=0;
942
}
943
944 d8085ea7 Michael Niedermayer
char av_get_pict_type_char(int pict_type){
945
    switch(pict_type){
946 fbd4293d Aurelien Jacobs
    case FF_I_TYPE: return 'I';
947
    case FF_P_TYPE: return 'P';
948
    case FF_B_TYPE: return 'B';
949
    case FF_S_TYPE: return 'S';
950
    case FF_SI_TYPE:return 'i';
951
    case FF_SP_TYPE:return 'p';
952 48d533e6 Aurelien Jacobs
    case FF_BI_TYPE:return 'b';
953 c06ccb13 Aurelien Jacobs
    default:        return '?';
954 d8085ea7 Michael Niedermayer
    }
955
}
956
957 ac3e1834 Baptiste Coudurier
int av_get_bits_per_sample(enum CodecID codec_id){
958
    switch(codec_id){
959 5da71469 Aurelien Jacobs
    case CODEC_ID_ADPCM_SBPRO_2:
960 f1b163e0 Aurelien Jacobs
        return 2;
961 5da71469 Aurelien Jacobs
    case CODEC_ID_ADPCM_SBPRO_3:
962 f1b163e0 Aurelien Jacobs
        return 3;
963 5da71469 Aurelien Jacobs
    case CODEC_ID_ADPCM_SBPRO_4:
964 f1b163e0 Aurelien Jacobs
    case CODEC_ID_ADPCM_CT:
965
        return 4;
966 ac3e1834 Baptiste Coudurier
    case CODEC_ID_PCM_ALAW:
967
    case CODEC_ID_PCM_MULAW:
968
    case CODEC_ID_PCM_S8:
969
    case CODEC_ID_PCM_U8:
970 9d49b8ff Peter Ross
    case CODEC_ID_PCM_ZORK:
971 ac3e1834 Baptiste Coudurier
        return 8;
972
    case CODEC_ID_PCM_S16BE:
973
    case CODEC_ID_PCM_S16LE:
974 725d86bf Aurelien Jacobs
    case CODEC_ID_PCM_S16LE_PLANAR:
975 ac3e1834 Baptiste Coudurier
    case CODEC_ID_PCM_U16BE:
976
    case CODEC_ID_PCM_U16LE:
977
        return 16;
978
    case CODEC_ID_PCM_S24DAUD:
979
    case CODEC_ID_PCM_S24BE:
980
    case CODEC_ID_PCM_S24LE:
981
    case CODEC_ID_PCM_U24BE:
982
    case CODEC_ID_PCM_U24LE:
983
        return 24;
984
    case CODEC_ID_PCM_S32BE:
985
    case CODEC_ID_PCM_S32LE:
986
    case CODEC_ID_PCM_U32BE:
987
    case CODEC_ID_PCM_U32LE:
988 aa29709e Peter Ross
    case CODEC_ID_PCM_F32BE:
989 143a5d6f Peter Ross
    case CODEC_ID_PCM_F32LE:
990 ac3e1834 Baptiste Coudurier
        return 32;
991 143a5d6f Peter Ross
    case CODEC_ID_PCM_F64BE:
992
    case CODEC_ID_PCM_F64LE:
993
        return 64;
994 ac3e1834 Baptiste Coudurier
    default:
995
        return 0;
996
    }
997
}
998
999 42c71907 David Conrad
int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
1000
    switch (sample_fmt) {
1001
    case SAMPLE_FMT_U8:
1002
        return 8;
1003
    case SAMPLE_FMT_S16:
1004
        return 16;
1005
    case SAMPLE_FMT_S32:
1006
    case SAMPLE_FMT_FLT:
1007
        return 32;
1008 e06b00f3 Peter Ross
    case SAMPLE_FMT_DBL:
1009
        return 64;
1010 42c71907 David Conrad
    default:
1011
        return 0;
1012
    }
1013
}
1014
1015 b250f9c6 Aurelien Jacobs
#if !HAVE_THREADS
1016 ca8ad847 Michael Niedermayer
int avcodec_thread_init(AVCodecContext *s, int thread_count){
1017 2e418f5e Stefano Sabatini
    s->thread_count = thread_count;
1018 ca8ad847 Michael Niedermayer
    return -1;
1019
}
1020
#endif
1021 ad2b531d Måns Rullgård
1022
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1023
{
1024
    unsigned int n = 0;
1025
1026
    while(v >= 0xff) {
1027
        *s++ = 0xff;
1028
        v -= 0xff;
1029
        n++;
1030
    }
1031
    *s = v;
1032
    n++;
1033
    return n;
1034
}
1035 1005f542 Corey Hickey
1036
/* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1037
 * Also, tries to create file in /tmp first, if possible.
1038
 * *prefix can be a character constant; *filename will be allocated internally.
1039
 * Returns file descriptor of opened file (or -1 on error)
1040
 * and opened file name in **filename. */
1041
int av_tempfile(char *prefix, char **filename) {
1042
    int fd=-1;
1043 b250f9c6 Aurelien Jacobs
#if !HAVE_MKSTEMP
1044 1005f542 Corey Hickey
    *filename = tempnam(".", prefix);
1045
#else
1046
    size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1047 f2508b17 Reynaldo H. Verdejo Pinochet
    *filename = av_malloc(len);
1048 1005f542 Corey Hickey
#endif
1049
    /* -----common section-----*/
1050
    if (*filename == NULL) {
1051
        av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1052
        return -1;
1053
    }
1054 b250f9c6 Aurelien Jacobs
#if !HAVE_MKSTEMP
1055 76353b42 Ramiro Polla
    fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
1056 1005f542 Corey Hickey
#else
1057
    snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1058
    fd = mkstemp(*filename);
1059
    if (fd < 0) {
1060
        snprintf(*filename, len, "./%sXXXXXX", prefix);
1061
        fd = mkstemp(*filename);
1062
    }
1063
#endif
1064
    /* -----common section-----*/
1065
    if (fd < 0) {
1066
        av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1067
        return -1;
1068
    }
1069
    return fd; /* success */
1070
}
1071 26ef3220 Stefano Sabatini
1072
typedef struct {
1073 c0ad72a7 Stefano Sabatini
    const char *abbr;
1074 26ef3220 Stefano Sabatini
    int width, height;
1075 c0ad72a7 Stefano Sabatini
} VideoFrameSizeAbbr;
1076
1077
typedef struct {
1078
    const char *abbr;
1079
    int rate_num, rate_den;
1080
} VideoFrameRateAbbr;
1081
1082 cf2baeb3 Stefan Gehrer
static const VideoFrameSizeAbbr video_frame_size_abbrs[] = {
1083 c0ad72a7 Stefano Sabatini
    { "ntsc",      720, 480 },
1084
    { "pal",       720, 576 },
1085
    { "qntsc",     352, 240 }, /* VCD compliant NTSC */
1086
    { "qpal",      352, 288 }, /* VCD compliant PAL */
1087
    { "sntsc",     640, 480 }, /* square pixel NTSC */
1088
    { "spal",      768, 576 }, /* square pixel PAL */
1089
    { "film",      352, 240 },
1090
    { "ntsc-film", 352, 240 },
1091
    { "sqcif",     128,  96 },
1092
    { "qcif",      176, 144 },
1093
    { "cif",       352, 288 },
1094
    { "4cif",      704, 576 },
1095 41913a35 Gwenole Beauchesne
    { "16cif",    1408,1152 },
1096 c0ad72a7 Stefano Sabatini
    { "qqvga",     160, 120 },
1097
    { "qvga",      320, 240 },
1098
    { "vga",       640, 480 },
1099
    { "svga",      800, 600 },
1100
    { "xga",      1024, 768 },
1101
    { "uxga",     1600,1200 },
1102
    { "qxga",     2048,1536 },
1103
    { "sxga",     1280,1024 },
1104
    { "qsxga",    2560,2048 },
1105
    { "hsxga",    5120,4096 },
1106
    { "wvga",      852, 480 },
1107
    { "wxga",     1366, 768 },
1108
    { "wsxga",    1600,1024 },
1109
    { "wuxga",    1920,1200 },
1110
    { "woxga",    2560,1600 },
1111
    { "wqsxga",   3200,2048 },
1112
    { "wquxga",   3840,2400 },
1113
    { "whsxga",   6400,4096 },
1114
    { "whuxga",   7680,4800 },
1115
    { "cga",       320, 200 },
1116
    { "ega",       640, 350 },
1117
    { "hd480",     852, 480 },
1118
    { "hd720",    1280, 720 },
1119
    { "hd1080",   1920,1080 },
1120
};
1121
1122 cf2baeb3 Stefan Gehrer
static const VideoFrameRateAbbr video_frame_rate_abbrs[]= {
1123 c0ad72a7 Stefano Sabatini
    { "ntsc",      30000, 1001 },
1124
    { "pal",          25,    1 },
1125
    { "qntsc",     30000, 1001 }, /* VCD compliant NTSC */
1126
    { "qpal",         25,    1 }, /* VCD compliant PAL */
1127
    { "sntsc",     30000, 1001 }, /* square pixel NTSC */
1128
    { "spal",         25,    1 }, /* square pixel PAL */
1129
    { "film",         24,    1 },
1130
    { "ntsc-film", 24000, 1001 },
1131 26ef3220 Stefano Sabatini
};
1132
1133
int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1134
{
1135
    int i;
1136 37d3e066 Aurelien Jacobs
    int n = FF_ARRAY_ELEMS(video_frame_size_abbrs);
1137 8468664b Baptiste Coudurier
    char *p;
1138 26ef3220 Stefano Sabatini
    int frame_width = 0, frame_height = 0;
1139
1140
    for(i=0;i<n;i++) {
1141 c0ad72a7 Stefano Sabatini
        if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {
1142
            frame_width = video_frame_size_abbrs[i].width;
1143
            frame_height = video_frame_size_abbrs[i].height;
1144 26ef3220 Stefano Sabatini
            break;
1145
        }
1146
    }
1147
    if (i == n) {
1148
        p = str;
1149 8468664b Baptiste Coudurier
        frame_width = strtol(p, &p, 10);
1150 26ef3220 Stefano Sabatini
        if (*p)
1151
            p++;
1152 8468664b Baptiste Coudurier
        frame_height = strtol(p, &p, 10);
1153 26ef3220 Stefano Sabatini
    }
1154
    if (frame_width <= 0 || frame_height <= 0)
1155
        return -1;
1156
    *width_ptr = frame_width;
1157
    *height_ptr = frame_height;
1158
    return 0;
1159
}
1160
1161
int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1162
{
1163
    int i;
1164 37d3e066 Aurelien Jacobs
    int n = FF_ARRAY_ELEMS(video_frame_rate_abbrs);
1165 26ef3220 Stefano Sabatini
    char* cp;
1166
1167
    /* First, we check our abbreviation table */
1168 c0ad72a7 Stefano Sabatini
    for (i = 0; i < n; ++i)
1169
         if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {
1170
             frame_rate->num = video_frame_rate_abbrs[i].rate_num;
1171
             frame_rate->den = video_frame_rate_abbrs[i].rate_den;
1172 26ef3220 Stefano Sabatini
             return 0;
1173
         }
1174
1175
    /* Then, we try to parse it as fraction */
1176
    cp = strchr(arg, '/');
1177
    if (!cp)
1178
        cp = strchr(arg, ':');
1179
    if (cp) {
1180
        char* cpp;
1181
        frame_rate->num = strtol(arg, &cpp, 10);
1182
        if (cpp != arg || cpp == cp)
1183
            frame_rate->den = strtol(cp+1, &cpp, 10);
1184
        else
1185
           frame_rate->num = 0;
1186
    }
1187
    else {
1188
        /* Finally we give up and parse it as double */
1189 38360668 Michael Niedermayer
        AVRational time_base = av_d2q(strtod(arg, 0), 1001000);
1190 26ef3220 Stefano Sabatini
        frame_rate->den = time_base.den;
1191
        frame_rate->num = time_base.num;
1192
    }
1193
    if (!frame_rate->num || !frame_rate->den)
1194
        return -1;
1195
    else
1196
        return 0;
1197
}
1198 ea779d91 Justin Ruggles
1199 ce863d7f Ronald S. Bultje
void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1200 ea779d91 Justin Ruggles
{
1201
    av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1202
            "version to the newest one from SVN. If the problem still "
1203
            "occurs, it means that your file has a feature which has not "
1204
            "been implemented.", feature);
1205
    if(want_sample)
1206 ce863d7f Ronald S. Bultje
        av_log_ask_for_sample(avc, NULL);
1207 0ba39dd1 Kenan Gillet
    else
1208
        av_log(avc, AV_LOG_WARNING, "\n");
1209
}
1210
1211 ce863d7f Ronald S. Bultje
void av_log_ask_for_sample(void *avc, const char *msg)
1212 0ba39dd1 Kenan Gillet
{
1213
    if (msg)
1214
        av_log(avc, AV_LOG_WARNING, "%s ", msg);
1215
    av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1216
            "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1217
            "and contact the ffmpeg-devel mailing list.\n");
1218 ea779d91 Justin Ruggles
}
1219 c895618b Michael Niedermayer
1220
static AVHWAccel *first_hwaccel = NULL;
1221
1222
void av_register_hwaccel(AVHWAccel *hwaccel)
1223
{
1224
    AVHWAccel **p = &first_hwaccel;
1225
    while (*p)
1226
        p = &(*p)->next;
1227
    *p = hwaccel;
1228
    hwaccel->next = NULL;
1229
}
1230 414d9d7f Michael Niedermayer
1231
AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1232
{
1233
    return hwaccel ? hwaccel->next : first_hwaccel;
1234
}
1235 6059f13c Michael Niedermayer
1236
AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1237
{
1238
    AVHWAccel *hwaccel=NULL;
1239
1240
    while((hwaccel= av_hwaccel_next(hwaccel))){
1241
        if (   hwaccel->id      == codec_id
1242
            && hwaccel->pix_fmt == pix_fmt)
1243
            return hwaccel;
1244
    }
1245
    return NULL;
1246
}
1247 f988ce6c Andreas Öman
1248
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1249
{
1250
    if (ff_lockmgr_cb) {
1251
        if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1252
            return -1;
1253
    }
1254
1255
    ff_lockmgr_cb = cb;
1256
1257
    if (ff_lockmgr_cb) {
1258
        if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1259
            return -1;
1260
    }
1261
    return 0;
1262
}