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audio: introduce mp_audio readonly bit 

Convenience for the following commit.
This commit is contained in:
wm4 2015-05-04 23:57:25 +02:00
parent 937c8e513f
commit 1b0b094ca2
2 changed files with 3 additions and 1 deletions
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3
audio/audio.c
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@ -118,6 +118,7 @@ void mp_audio_set_null_data(struct mp_audio *mpa)
mpa->allocated[n] = NULL;
}
mpa->samples = 0;
mpa->readonly = false;
}
static int get_plane_size(const struct mp_audio *mpa, int samples)
@ -250,7 +251,7 @@ void mp_audio_skip_samples(struct mp_audio *data, int samples)
// Will return true for non-refcounted frames.
bool mp_audio_is_writeable(struct mp_audio *data)
{
bool ok = true;
bool ok = !data->readonly;
for (int n = 0; n < MP_NUM_CHANNELS; n++) {
if (data->allocated[n])
ok &= av_buffer_is_writable(data->allocated[n]);

1
audio/audio.h
View File

@ -38,6 +38,7 @@ struct mp_audio {
int bps; // size of sub-samples (af_fmt2bps(format))
// private
bool readonly;
struct AVBufferRef *allocated[MP_NUM_CHANNELS];
};