3 * Copyright (c) 2001 Gerard Lantau.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
32 void *av_mallocz(int size)
35 #if defined ( ARCH_X86 ) && defined ( HAVE_MEMALIGN )
36 ptr = memalign(64,size);
38 Indeed, we should align it:
41 on 32 for 586, PPro - k6-III
42 on 64 for K7 (maybe for P3 too).
43 Because L1 and L2 caches are aligned on those values.
44 But I don't want to code such logic here!
55 /* encoder management */
56 AVCodec *first_avcodec;
58 void register_avcodec(AVCodec *format)
62 while (*p != NULL) p = &(*p)->next;
67 int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
72 avctx->frame_number = 0;
73 avctx->priv_data = av_mallocz(codec->priv_data_size);
74 if (!avctx->priv_data)
76 ret = avctx->codec->init(avctx);
78 free(avctx->priv_data);
79 avctx->priv_data = NULL;
85 int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
90 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
91 avctx->frame_number++;
95 int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
96 const AVPicture *pict)
100 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
101 avctx->frame_number++;
105 /* decode a frame. return -1 if error, otherwise return the number of
106 bytes used. If no frame could be decompressed, *got_picture_ptr is
107 zero. Otherwise, it is non zero */
108 int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
109 int *got_picture_ptr,
110 UINT8 *buf, int buf_size)
114 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
116 avctx->frame_number++;
120 /* decode an audio frame. return -1 if error, otherwise return the
121 *number of bytes used. If no frame could be decompressed,
122 *frame_size_ptr is zero. Otherwise, it is the decompressed frame
124 int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
126 UINT8 *buf, int buf_size)
130 ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
132 avctx->frame_number++;
136 int avcodec_close(AVCodecContext *avctx)
138 if (avctx->codec->close)
139 avctx->codec->close(avctx);
140 free(avctx->priv_data);
141 avctx->priv_data = NULL;
146 AVCodec *avcodec_find_encoder(enum CodecID id)
151 if (p->encode != NULL && p->id == id)
158 AVCodec *avcodec_find_encoder_by_name(const char *name)
163 if (p->encode != NULL && strcmp(name,p->name) == 0)
170 AVCodec *avcodec_find_decoder(enum CodecID id)
175 if (p->decode != NULL && p->id == id)
182 AVCodec *avcodec_find_decoder_by_name(const char *name)
187 if (p->decode != NULL && strcmp(name,p->name) == 0)
194 AVCodec *avcodec_find(enum CodecID id)
206 const char *pix_fmt_str[] = {
215 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
217 const char *codec_name;
223 p = avcodec_find_encoder(enc->codec_id);
225 p = avcodec_find_decoder(enc->codec_id);
228 codec_name = p->name;
229 } else if (enc->codec_name[0] != '\0') {
230 codec_name = enc->codec_name;
232 /* output avi tags */
233 if (enc->codec_type == CODEC_TYPE_VIDEO) {
234 snprintf(buf1, sizeof(buf1), "%c%c%c%c",
235 enc->codec_tag & 0xff,
236 (enc->codec_tag >> 8) & 0xff,
237 (enc->codec_tag >> 16) & 0xff,
238 (enc->codec_tag >> 24) & 0xff);
240 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
245 switch(enc->codec_type) {
246 case CODEC_TYPE_VIDEO:
247 snprintf(buf, buf_size,
249 codec_name, enc->flags & CODEC_FLAG_HQ ? " (hq)" : "");
250 if (enc->codec_id == CODEC_ID_RAWVIDEO) {
251 snprintf(buf + strlen(buf), buf_size - strlen(buf),
253 pix_fmt_str[enc->pix_fmt]);
256 snprintf(buf + strlen(buf), buf_size - strlen(buf),
257 ", %dx%d, %0.2f fps",
258 enc->width, enc->height,
259 (float)enc->frame_rate / FRAME_RATE_BASE);
261 bitrate = enc->bit_rate;
263 case CODEC_TYPE_AUDIO:
264 snprintf(buf, buf_size,
267 if (enc->sample_rate) {
268 snprintf(buf + strlen(buf), buf_size - strlen(buf),
271 enc->channels == 2 ? "stereo" : "mono");
273 /* for PCM codecs, compute bitrate directly */
274 switch(enc->codec_id) {
275 case CODEC_ID_PCM_S16LE:
276 case CODEC_ID_PCM_S16BE:
277 case CODEC_ID_PCM_U16LE:
278 case CODEC_ID_PCM_U16BE:
279 bitrate = enc->sample_rate * enc->channels * 16;
281 case CODEC_ID_PCM_S8:
282 case CODEC_ID_PCM_U8:
283 case CODEC_ID_PCM_ALAW:
284 case CODEC_ID_PCM_MULAW:
285 bitrate = enc->sample_rate * enc->channels * 8;
288 bitrate = enc->bit_rate;
296 snprintf(buf + strlen(buf), buf_size - strlen(buf),
297 ", %d kb/s", bitrate / 1000);
301 /* Picture field are filled with 'ptr' addresses */
302 void avpicture_fill(AVPicture *picture, UINT8 *ptr,
303 int pix_fmt, int width, int height)
307 size = width * height;
309 case PIX_FMT_YUV420P:
310 picture->data[0] = ptr;
311 picture->data[1] = picture->data[0] + size;
312 picture->data[2] = picture->data[1] + size / 4;
313 picture->linesize[0] = width;
314 picture->linesize[1] = width / 2;
315 picture->linesize[2] = width / 2;
317 case PIX_FMT_YUV422P:
318 picture->data[0] = ptr;
319 picture->data[1] = picture->data[0] + size;
320 picture->data[2] = picture->data[1] + size / 2;
321 picture->linesize[0] = width;
322 picture->linesize[1] = width / 2;
323 picture->linesize[2] = width / 2;
325 case PIX_FMT_YUV444P:
326 picture->data[0] = ptr;
327 picture->data[1] = picture->data[0] + size;
328 picture->data[2] = picture->data[1] + size;
329 picture->linesize[0] = width;
330 picture->linesize[1] = width;
331 picture->linesize[2] = width;
335 picture->data[0] = ptr;
336 picture->data[1] = NULL;
337 picture->data[2] = NULL;
338 picture->linesize[0] = width * 3;
341 picture->data[0] = ptr;
342 picture->data[1] = NULL;
343 picture->data[2] = NULL;
344 picture->linesize[0] = width * 2;
347 picture->data[0] = NULL;
348 picture->data[1] = NULL;
349 picture->data[2] = NULL;
354 int avpicture_get_size(int pix_fmt, int width, int height)
358 size = width * height;
360 case PIX_FMT_YUV420P:
361 size = (size * 3) / 2;
363 case PIX_FMT_YUV422P:
366 case PIX_FMT_YUV444P:
384 /* must be called before any other functions */
385 void avcodec_init(void)
390 /* simple call to use all the codecs */
391 void avcodec_register_all(void)
394 #ifdef CONFIG_ENCODERS
395 register_avcodec(&ac3_encoder);
396 register_avcodec(&mp2_encoder);
397 register_avcodec(&mpeg1video_encoder);
398 register_avcodec(&h263_encoder);
399 register_avcodec(&h263p_encoder);
400 register_avcodec(&rv10_encoder);
401 register_avcodec(&mjpeg_encoder);
402 register_avcodec(&mpeg4_encoder);
403 register_avcodec(&msmpeg4_encoder);
404 #endif /* CONFIG_ENCODERS */
405 register_avcodec(&rawvideo_codec);
408 #ifdef CONFIG_DECODERS
409 register_avcodec(&h263_decoder);
410 register_avcodec(&mpeg4_decoder);
411 register_avcodec(&msmpeg4_decoder);
412 register_avcodec(&mpeg_decoder);
413 register_avcodec(&h263i_decoder);
414 register_avcodec(&rv10_decoder);
415 register_avcodec(&mjpeg_decoder);
416 register_avcodec(&mp3_decoder);
418 register_avcodec(&ac3_decoder);
420 #endif /* CONFIG_DECODERS */
424 #define PCM_CODEC(id, name) \
425 register_avcodec(& name ## _encoder); \
426 register_avcodec(& name ## _decoder); \
428 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
429 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
430 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
431 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
432 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
433 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
434 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
435 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
440 static int encode_init(AVCodecContext *s)
445 static int decode_frame(AVCodecContext *avctx,
446 void *data, int *data_size,
447 UINT8 *buf, int buf_size)
452 static int encode_frame(AVCodecContext *avctx,
453 unsigned char *frame, int buf_size, void *data)
458 AVCodec rawvideo_codec = {