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Wed, 12 Jan 2022 17:52:34 -0800 (PST) From: James Almer To: ffmpeg-devel@ffmpeg.org Date: Wed, 12 Jan 2022 22:49:51 -0300 Message-Id: <20220113015101.4-30-jamrial@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220113015101.4-1-jamrial@gmail.com> References: <20220113015101.4-1-jamrial@gmail.com> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 029/281] apm: convert to new channel layout API X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: Signed-off-by: James Almer --- libavformat/apm.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) diff --git a/libavformat/apm.c b/libavformat/apm.c index 1ced771745..6af0e1bdcb 100644 --- a/libavformat/apm.c +++ b/libavformat/apm.c @@ -104,6 +104,7 @@ static int apm_read_header(AVFormatContext *s) APMExtraData extradata; AVCodecParameters *par; uint8_t buf[APM_FILE_EXTRADATA_SIZE]; + int channels; if (!(st = avformat_new_stream(s, NULL))) return AVERROR(ENOMEM); @@ -116,7 +117,7 @@ static int apm_read_header(AVFormatContext *s) return AVERROR_INVALIDDATA; par = st->codecpar; - par->channels = avio_rl16(s->pb); + channels = avio_rl16(s->pb); par->sample_rate = avio_rl32(s->pb); /* Skip the bitrate, it's usually wrong anyway. */ @@ -136,17 +137,14 @@ static int apm_read_header(AVFormatContext *s) if (par->bits_per_coded_sample != 4) return AVERROR_INVALIDDATA; - if (par->channels == 2) - par->channel_layout = AV_CH_LAYOUT_STEREO; - else if (par->channels == 1) - par->channel_layout = AV_CH_LAYOUT_MONO; - else + if (channels > 2) return AVERROR_INVALIDDATA; + av_channel_layout_default(&par->ch_layout, channels); par->codec_type = AVMEDIA_TYPE_AUDIO; par->codec_id = AV_CODEC_ID_ADPCM_IMA_APM; par->format = AV_SAMPLE_FMT_S16; - par->bit_rate = par->channels * + par->bit_rate = par->ch_layout.nb_channels * par->sample_rate * par->bits_per_coded_sample; @@ -175,7 +173,7 @@ static int apm_read_header(AVFormatContext *s) st->start_time = 0; st->duration = extradata.data_size * (8 / par->bits_per_coded_sample) / - par->channels; + par->ch_layout.nb_channels; return 0; } @@ -195,7 +193,7 @@ static int apm_read_packet(AVFormatContext *s, AVPacket *pkt) pkt->flags &= ~AV_PKT_FLAG_CORRUPT; pkt->stream_index = 0; - pkt->duration = ret * (8 / par->bits_per_coded_sample) / par->channels; + pkt->duration = ret * (8 / par->bits_per_coded_sample) / par->ch_layout.nb_channels; return 0; } @@ -227,7 +225,7 @@ static int apm_write_init(AVFormatContext *s) return AVERROR(EINVAL); } - if (par->channels > 2) { + if (par->ch_layout.nb_channels > 2) { av_log(s, AV_LOG_ERROR, "APM files only support up to 2 channels\n"); return AVERROR(EINVAL); } @@ -260,10 +258,10 @@ static int apm_write_header(AVFormatContext *s) * be used because of the extra 2 bytes. */ avio_wl16(s->pb, APM_TAG_CODEC); - avio_wl16(s->pb, par->channels); + avio_wl16(s->pb, par->ch_layout.nb_channels); avio_wl32(s->pb, par->sample_rate); /* This is the wrong calculation, but it's what the orginal files have. */ - avio_wl32(s->pb, par->sample_rate * par->channels * 2); + avio_wl32(s->pb, par->sample_rate * par->ch_layout.nb_channels * 2); avio_wl16(s->pb, par->block_align); avio_wl16(s->pb, par->bits_per_coded_sample); avio_wl32(s->pb, APM_FILE_EXTRADATA_SIZE); -- 2.34.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".