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libs: audio: Fix gst_audio_buffer_truncate meta handling

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In the non-interleaved case, it made `buffer` writable but then changed
the meta of the non-writable buffer.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/1035>
This commit is contained in:
Jan Alexander Steffens (heftig) 2021-02-15 17:22:47 +01:00
parent 319da90d4c
commit 297a5f09b1
1 changed files with 5 additions and 1 deletions
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6
gst-libs/gst/audio/audio.c
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@ -290,6 +290,10 @@ gst_audio_buffer_truncate (GstBuffer * buffer, gint bpf, gsize trim,
if (samples == orig_samples)
return buffer;
GST_DEBUG ("Truncating %" G_GSIZE_FORMAT " to %" G_GSIZE_FORMAT
" (trim start %" G_GSIZE_FORMAT ", end %" G_GSIZE_FORMAT ")",
orig_samples, samples, trim, orig_samples - trim - samples);
if (!meta || meta->info.layout == GST_AUDIO_LAYOUT_INTERLEAVED) {
/* interleaved */
ret = gst_buffer_copy_region (buffer, GST_BUFFER_COPY_ALL, trim * bpf,
@ -301,7 +305,7 @@ gst_audio_buffer_truncate (GstBuffer * buffer, gint bpf, gsize trim,
} else {
/* non-interleaved */
ret = gst_buffer_make_writable (buffer);
meta = gst_buffer_get_audio_meta (buffer);
meta = gst_buffer_get_audio_meta (ret);
meta->samples = samples;
for (i = 0; i < meta->info.channels; i++) {
meta->offsets[i] += trim * bpf / meta->info.channels;