[FFmpeg-cvslog] avformat/argo_asf: fix handling of v1.1 files
Zane van Iperen
git at videolan.org
Mon Sep 7 06:17:54 EEST 2020
ffmpeg | branch: master | Zane van Iperen <zane at zanevaniperen.com> | Sat Sep 5 21:30:12 2020 +1000| [d2f7b399149f725138f5551ae980e755596d527c] | committer: Zane van Iperen
avformat/argo_asf: fix handling of v1.1 files
Version 1.1 (FX Fighter) files all have a sample rate of 44100
in the header, but only play back correctly at 22050.
Force the sample rate to 22050 when reading, and restrict it
when muxing.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d2f7b399149f725138f5551ae980e755596d527c
---
libavformat/argo_asf.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/libavformat/argo_asf.c b/libavformat/argo_asf.c
index 37ad2bf5e9..bf9b5d0c0a 100644
--- a/libavformat/argo_asf.c
+++ b/libavformat/argo_asf.c
@@ -187,7 +187,11 @@ static int argo_asf_read_header(AVFormatContext *s)
st->codecpar->channels = 1;
}
- st->codecpar->sample_rate = asf->ckhdr.sample_rate;
+ /* v1.1 files (FX Fighter) are all marked as 44100, but are actually 22050. */
+ if (asf->fhdr.version_major == 1 && asf->fhdr.version_minor == 1)
+ st->codecpar->sample_rate = 22050;
+ else
+ st->codecpar->sample_rate = asf->ckhdr.sample_rate;
st->codecpar->bits_per_coded_sample = 4;
@@ -264,6 +268,7 @@ AVInputFormat ff_argo_asf_demuxer = {
#if CONFIG_ARGO_ASF_MUXER
static int argo_asf_write_init(AVFormatContext *s)
{
+ ArgoASFMuxContext *ctx = s->priv_data;
const AVCodecParameters *par;
if (s->nb_streams != 1) {
@@ -279,6 +284,11 @@ static int argo_asf_write_init(AVFormatContext *s)
return AVERROR(EINVAL);
}
+ if (ctx->version_major == 1 && ctx->version_minor == 1 && par->sample_rate != 22050) {
+ av_log(s, AV_LOG_ERROR, "ASF v1.1 files only support a sample rate of 22050\n");
+ return AVERROR(EINVAL);
+ }
+
if (par->channels > 2) {
av_log(s, AV_LOG_ERROR, "ASF files only support up to 2 channels\n");
return AVERROR(EINVAL);
@@ -351,7 +361,12 @@ static int argo_asf_write_header(AVFormatContext *s)
chdr.num_blocks = 0;
chdr.num_samples = ASF_SAMPLE_COUNT;
chdr.unk1 = 0;
- chdr.sample_rate = par->sample_rate;
+
+ if (ctx->version_major == 1 && ctx->version_minor == 1)
+ chdr.sample_rate = 44100;
+ else
+ chdr.sample_rate = par->sample_rate;
+
chdr.unk2 = ~0;
chdr.flags = ASF_CF_BITS_PER_SAMPLE | ASF_CF_ALWAYS1;
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