diff options
Diffstat (limited to 'libavcodec/dvaudio_parser.c')
-rw-r--r-- | libavcodec/dvaudio_parser.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/libavcodec/dvaudio_parser.c b/libavcodec/dvaudio_parser.c new file mode 100644 index 0000000..160faaf --- /dev/null +++ b/libavcodec/dvaudio_parser.c @@ -0,0 +1,46 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * Ulead DV audio parser + * + * Determines the duration for each packet. + */ + +#include "parser.h" +#include "dvaudio.h" + +static int dvaudio_parse(AVCodecParserContext *s1, AVCodecContext *avctx, + const uint8_t **poutbuf, int *poutbuf_size, + const uint8_t *buf, int buf_size) +{ + if (buf_size >= 248) + s1->duration = dv_get_audio_sample_count(buf + 244, avctx->block_align == 8640); + + /* always return the full packet. this parser isn't doing any splitting or + combining, only packet analysis */ + *poutbuf = buf; + *poutbuf_size = buf_size; + return buf_size; +} + +AVCodecParser ff_dvaudio_parser = { + .codec_ids = { AV_CODEC_ID_DVAUDIO }, + .parser_parse = dvaudio_parse, +}; |