diff options
author | Diego Biurrun <diego@biurrun.de> | 2017-04-26 18:57:54 +0200 |
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committer | Diego Biurrun <diego@biurrun.de> | 2017-05-02 18:50:34 +0200 |
commit | b5f19f7478492307e4b4763aeac3180faf50e17f (patch) | |
tree | 0fb69992023b946295a3130e2066256e3caf88fe /libavcodec/adts_parser.c | |
parent | 0ac1fec1c3dacedabbf3dd4122ef4bf8523e688c (diff) |
aac: Split function to parse ADTS header data into public and private part
This makes the currently semi-public avpriv_aac_parse_header() function
private to libavcodec and adds a proper public API function to return
the parts of the ADTS header required in libavformat.
Diffstat (limited to 'libavcodec/adts_parser.c')
-rw-r--r-- | libavcodec/adts_parser.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/libavcodec/adts_parser.c b/libavcodec/adts_parser.c new file mode 100644 index 0000000000..5821e6fb79 --- /dev/null +++ b/libavcodec/adts_parser.c @@ -0,0 +1,44 @@ +/* + * This file is part of Libav. + * + * Libav 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. + * + * Libav 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 Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "config.h" + +#include <stddef.h> +#include <stdint.h> + +#include "adts_header.h" +#include "adts_parser.h" + +int av_adts_header_parse(const uint8_t *buf, uint32_t *samples, uint8_t *frames) +{ +#if CONFIG_ADTS_HEADER + GetBitContext gb; + AACADTSHeaderInfo hdr; + int err = init_get_bits8(&gb, buf, AV_AAC_ADTS_HEADER_SIZE); + if (err < 0) + return err; + err = ff_adts_header_parse(&gb, &hdr); + if (err < 0) + return err; + *samples = hdr.samples; + *frames = hdr.num_aac_frames; + return 0; +#else + return AVERROR(ENOSYS); +#endif +} |