Module: libav Branch: master Commit: 23d0fdcf6f30843fc3f14084d80581f1ca10f1f3
Author: Maxim Poliakovski <[email protected]> Committer: Anton Khirnov <[email protected]> Date: Sat Sep 28 00:18:18 2013 +0200 Add support for multichannel ATRAC3+ streams. Signed-off-by: Anton Khirnov <[email protected]> --- libavformat/oma.c | 15 +++++++++++++++ libavformat/oma.h | 3 +++ libavformat/omadec.c | 13 ++++++++++--- 3 files changed, 28 insertions(+), 3 deletions(-) diff --git a/libavformat/oma.c b/libavformat/oma.c index aaaf0b2..27b5988 100644 --- a/libavformat/oma.c +++ b/libavformat/oma.c @@ -21,6 +21,7 @@ #include "internal.h" #include "oma.h" #include "libavcodec/avcodec.h" +#include "libavutil/channel_layout.h" const uint16_t ff_oma_srate_tab[8] = { 320, 441, 480, 882, 960, 0 }; @@ -31,3 +32,17 @@ const AVCodecTag ff_oma_codec_tags[] = { { AV_CODEC_ID_PCM_S16BE, OMA_CODECID_LPCM }, { 0 }, }; + +/** map ATRAC-X channel id to internal channel layout */ +const uint64_t ff_oma_chid_to_native_layout[7] = { + AV_CH_LAYOUT_MONO, + AV_CH_LAYOUT_STEREO, + AV_CH_LAYOUT_SURROUND, + AV_CH_LAYOUT_4POINT0, + AV_CH_LAYOUT_5POINT1_BACK, + AV_CH_LAYOUT_6POINT1_BACK, + AV_CH_LAYOUT_7POINT1 +}; + +/** map ATRAC-X channel id to total number of channels */ +const int ff_oma_chid_to_num_channels[7] = {1, 2, 3, 4, 6, 7, 8}; diff --git a/libavformat/oma.h b/libavformat/oma.h index 1f0ddf9..9a35da2 100644 --- a/libavformat/oma.h +++ b/libavformat/oma.h @@ -41,4 +41,7 @@ extern const uint16_t ff_oma_srate_tab[8]; extern const AVCodecTag ff_oma_codec_tags[]; +extern const uint64_t ff_oma_chid_to_native_layout[7]; +extern const int ff_oma_chid_to_num_channels[7]; + #endif /* AVFORMAT_OMA_H */ diff --git a/libavformat/omadec.c b/libavformat/omadec.c index 274112e..e68071c 100644 --- a/libavformat/omadec.c +++ b/libavformat/omadec.c @@ -1,7 +1,7 @@ /* * Sony OpenMG (OMA) demuxer * - * Copyright (c) 2008 Maxim Poliakovski + * Copyright (c) 2008, 2013 Maxim Poliakovski * 2008 Benjamin Larsson * 2011 David Goldwich * @@ -284,7 +284,7 @@ static int decrypt_init(AVFormatContext *s, ID3v2ExtraMeta *em, uint8_t *header) static int oma_read_header(AVFormatContext *s) { int ret, framesize, jsflag, samplerate; - uint32_t codec_params; + uint32_t codec_params, channel_id; int16_t eid; uint8_t buf[EA3_HEADER_SIZE]; uint8_t *edata; @@ -364,7 +364,14 @@ static int oma_read_header(AVFormatContext *s) avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate); break; case OMA_CODECID_ATRAC3P: - st->codec->channels = (codec_params >> 10) & 7; + channel_id = (codec_params >> 10) & 7; + if (!channel_id) { + av_log(s, AV_LOG_ERROR, + "Invalid ATRAC-X channel id: %d\n", channel_id); + return AVERROR_INVALIDDATA; + } + st->codec->channel_layout = ff_oma_chid_to_native_layout[channel_id - 1]; + st->codec->channels = ff_oma_chid_to_num_channels[channel_id - 1]; framesize = ((codec_params & 0x3FF) * 8) + 8; samplerate = ff_oma_srate_tab[(codec_params >> 13) & 7] * 100; if (!samplerate) { _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
