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gstaudiodecoder: take into account GstAudioMeta::samples on the output buffers

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This is useful if the output buffers are planar and have extra padding
on each plane, in which case size/bpf does not represent the number of
valid samples.

https://bugzilla.gnome.org/show_bug.cgi?id=705977
This commit is contained in:
George Kiagiadakis 2018-02-14 13:55:06 +02:00
parent 2d38d2f1d3
commit 0ce20cef4f
1 changed files with 28 additions and 9 deletions
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37
gst-libs/gst/audio/gstaudiodecoder.c
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@ -1213,9 +1213,9 @@ gst_audio_decoder_finish_frame (GstAudioDecoder * dec, GstBuffer * buf,
GstAudioDecoderPrivate *priv;
GstAudioDecoderContext *ctx;
GstAudioDecoderClass *klass = GST_AUDIO_DECODER_GET_CLASS (dec);
gint samples = 0;
GstAudioMeta *meta;
GstClockTime ts, next_ts;
gsize size;
gsize size, samples = 0;
GstFlowReturn ret = GST_FLOW_OK;
GQueue inbufs = G_QUEUE_INIT;
@ -1227,7 +1227,9 @@ gst_audio_decoder_finish_frame (GstAudioDecoder * dec, GstBuffer * buf,
priv = dec->priv;
ctx = &dec->priv->ctx;
meta = buf ? gst_buffer_get_audio_meta (buf) : NULL;
size = buf ? gst_buffer_get_size (buf) : 0;
samples = buf ? (meta ? meta->samples : size / ctx->info.bpf) : 0;
/* must know the output format by now */
g_return_val_if_fail (buf == NULL || GST_AUDIO_INFO_IS_VALID (&ctx->info),
@ -1235,8 +1237,7 @@ gst_audio_decoder_finish_frame (GstAudioDecoder * dec, GstBuffer * buf,
GST_LOG_OBJECT (dec,
"accepting %" G_GSIZE_FORMAT " bytes == %" G_GSIZE_FORMAT
" samples for %d frames", buf ? size : -1,
buf ? size / ctx->info.bpf : -1, frames);
" samples for %d frames", buf ? size : 0, samples, frames);
GST_AUDIO_DECODER_STREAM_LOCK (dec);
@ -1251,12 +1252,20 @@ gst_audio_decoder_finish_frame (GstAudioDecoder * dec, GstBuffer * buf,
send_pending_events (dec);
}
/* output shoud be whole number of sample frames */
/* sanity checking */
if (G_LIKELY (buf && ctx->info.bpf)) {
if (size % ctx->info.bpf)
goto wrong_buffer;
/* per channel least */
samples = size / ctx->info.bpf;
if (!meta || meta->info.layout == GST_AUDIO_LAYOUT_INTERLEAVED) {
/* output shoud be whole number of sample frames */
if (size % ctx->info.bpf)
goto wrong_buffer;
/* output should have no additional padding */
if (samples != size / ctx->info.bpf)
goto wrong_samples;
} else {
/* can't have more samples than what the buffer fits */
if (samples > size / ctx->info.bpf)
goto wrong_samples;
}
}
/* frame and ts book-keeping */
@ -1408,6 +1417,16 @@ wrong_buffer:
ret = GST_FLOW_ERROR;
goto exit;
}
wrong_samples:
{
GST_ELEMENT_ERROR (dec, STREAM, DECODE, (NULL),
("GstAudioMeta samples (%" G_GSIZE_FORMAT ") are inconsistent with "
"the buffer size and layout (size/bpf = %" G_GSIZE_FORMAT ")",
meta->samples, size / ctx->info.bpf));
gst_buffer_unref (buf);
ret = GST_FLOW_ERROR;
goto exit;
}
}
static GstFlowReturn