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implemented preliminary pre-cacher for audio

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FFmpegDecoder now implements an "indexer" for audio, which actually just
extracts the raw PCM audio from an audio codec and saves it to disk
This commit is contained in:
itsmattkc
2019-10-24 16:36:26 +11:00
parent 52f4c59bec
commit 2fdf78df4a
14 changed files with 370 additions and 36 deletions
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app/render/audio/audioparams.cpp
+8 -2
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@@ -52,7 +52,7 @@ int AudioRenderingParams::time_to_bytes(const rational &time) const
{
Q_ASSERT(is_valid());
return qFloor(time.toDouble() * sample_rate()) * channel_count() * sample_size();
return qFloor(time.toDouble() * sample_rate()) * channel_count() * bytes_per_sample();
}
int AudioRenderingParams::channel_count() const
@@ -60,7 +60,7 @@ int AudioRenderingParams::channel_count() const
return av_get_channel_layout_nb_channels(channel_layout());
}
int AudioRenderingParams::sample_size() const
int AudioRenderingParams::bytes_per_sample() const
{
switch (format_) {
case olive::SAMPLE_FMT_U8:
@@ -71,6 +71,7 @@ int AudioRenderingParams::sample_size() const
case olive::SAMPLE_FMT_FLT:
return 4;
case olive::SAMPLE_FMT_DBL:
case olive::SAMPLE_FMT_S64:
return 8;
case olive::SAMPLE_FMT_INVALID:
case olive::SAMPLE_FMT_COUNT:
@@ -80,6 +81,11 @@ int AudioRenderingParams::sample_size() const
return 0;
}
int AudioRenderingParams::bits_per_sample() const
{
return bytes_per_sample() * 8;
}
bool AudioRenderingParams::is_valid() const
{
return (sample_rate() > 0