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audio-converter: add a convenience conversion method

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This is useful from python bindings

https://bugzilla.gnome.org/show_bug.cgi?id=793492
This commit is contained in:
Mathieu Duponchelle 2018-02-15 20:00:42 +01:00
parent 6a4a82f355
commit 9cf4293bde
3 changed files with 42 additions and 0 deletions
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1
docs/libs/gst-plugins-base-libs-sections.txt
View file

@ -658,6 +658,7 @@ GstAudioConverterFlags
gst_audio_converter_new gst_audio_converter_new
gst_audio_converter_free gst_audio_converter_free
gst_audio_converter_samples gst_audio_converter_samples
gst_audio_converter_convert
gst_audio_converter_get_in_frames gst_audio_converter_get_in_frames
gst_audio_converter_get_max_latency gst_audio_converter_get_max_latency
gst_audio_converter_get_out_frames gst_audio_converter_get_out_frames

35
gst-libs/gst/audio/audio-converter.c
View file

@ -1447,6 +1447,41 @@ gst_audio_converter_samples (GstAudioConverter * convert,
return convert->convert (convert, flags, in, in_frames, out, out_frames); return convert->convert (convert, flags, in, in_frames, out, out_frames);
} }
/**
* gst_audio_converter_convert:
* @flags: extra #GstAudioConverterFlags
* @in: (array length=in_size) (element-type guint8): input data
* @in_size: size of @in
* @out: (out) (array length=out_size) (element-type guint8): a pointer where
* the output data will be written
* @out_size: (out): a pointer where the size of @out will be written
*
* Convenience wrapper around gst_audio_converter_samples(), which will
* perform allocation of the output buffer based on the result from
* gst_audio_converter_get_out_frames().
*
* Returns: %TRUE is the conversion could be performed.
*
* Since: 1.14
*/
gboolean
gst_audio_converter_convert (GstAudioConverter * convert,
GstAudioConverterFlags flags, gpointer in, gsize in_size,
gpointer * out, gsize * out_size)
{
g_return_val_if_fail (convert != NULL, FALSE);
g_return_val_if_fail (flags ^ GST_AUDIO_CONVERTER_FLAG_IN_WRITABLE, FALSE);
gsize in_frames = in_size / convert->in.bpf;
gsize out_frames = gst_audio_converter_get_out_frames (convert, in_frames);
*out_size = out_frames * convert->out.bpf;
*out = g_malloc0 (*out_size);
return gst_audio_converter_samples (convert, flags, &in, in_frames, out,
out_frames);
}
/** /**
* gst_audio_converter_supports_inplace: * gst_audio_converter_supports_inplace:
* @convert: a #GstAudioConverter * @convert: a #GstAudioConverter

6
gst-libs/gst/audio/audio-converter.h
View file

@ -159,6 +159,12 @@ gboolean gst_audio_converter_samples (GstAudioConverter * co
GST_EXPORT GST_EXPORT
gboolean gst_audio_converter_supports_inplace (GstAudioConverter *convert); gboolean gst_audio_converter_supports_inplace (GstAudioConverter *convert);
GST_EXPORT
gboolean gst_audio_converter_convert (GstAudioConverter * convert,
GstAudioConverterFlags flags,
gpointer in, gsize in_size,
gpointer *out, gsize *out_size);
G_END_DECLS G_END_DECLS
#endif /* __GST_AUDIO_CONVERTER_H__ */ #endif /* __GST_AUDIO_CONVERTER_H__ */