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audio-converter: prepare API for rate changes

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Use the update function to update the sample rates along with the config
once we implement resampling.
This commit is contained in:
Wim Taymans 2016-01-08 17:28:31 +01:00
parent 980163457e
commit 7f49b946cc
2 changed files with 25 additions and 9 deletions
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27
gst-libs/gst/audio/audio-converter.c
View file

@ -273,11 +273,16 @@ copy_config (GQuark field_id, const GValue * value, gpointer user_data)
}
/**
* gst_audio_converter_set_config:
* gst_audio_converter_update_config:
* @convert: a #GstAudioConverter
* @in_rate: input rate
* @out_rate: output rate
* @config: (transfer full): a #GstStructure
*
* Set @config as extra configuraion for @convert.
* Set @config as extra configuration for @convert.
*
* in_rate and @out_rate specify the new sample rates of input and output
* formats. A value of 0 leaves the sample rate unchanged.
*
* If the parameters in @config can not be set exactly, this function returns
* %FALSE and will try to update as much state as possible. The new state can
@ -289,8 +294,8 @@ copy_config (GQuark field_id, const GValue * value, gpointer user_data)
* Returns: %TRUE when @config could be set.
*/
gboolean
gst_audio_converter_set_config (GstAudioConverter * convert,
GstStructure * config)
gst_audio_converter_update_config (GstAudioConverter * convert,
gint in_rate, gint out_rate, GstStructure * config)
{
g_return_val_if_fail (convert != NULL, FALSE);
g_return_val_if_fail (config != NULL, FALSE);
@ -304,17 +309,25 @@ gst_audio_converter_set_config (GstAudioConverter * convert,
/**
* gst_audio_converter_get_config:
* @convert: a #GstAudioConverter
* @in_rate: result input rate
* @out_rate: result output rate
*
* Get the current configuration of @convert.
*
* Returns: a #GstStructure that remains valid for as long as @convert is valid
* or until gst_audio_converter_set_config() is called.
* or until gst_audio_converter_update_config() is called.
*/
const GstStructure *
gst_audio_converter_get_config (GstAudioConverter * convert)
gst_audio_converter_get_config (GstAudioConverter * convert,
gint * in_rate, gint * out_rate)
{
g_return_val_if_fail (convert != NULL, NULL);
if (in_rate)
*in_rate = convert->in.rate;
if (out_rate)
*out_rate = convert->out.rate;
return convert->config;
}
@ -704,7 +717,7 @@ gst_audio_converter_new (GstAudioInfo * in_info, GstAudioInfo * out_info,
/* default config */
convert->config = gst_structure_new_empty ("GstAudioConverter");
if (config)
gst_audio_converter_set_config (convert, config);
gst_audio_converter_update_config (convert, 0, 0, config);
GST_INFO ("unitsizes: %d -> %d", in_info->bpf, out_info->bpf);

7
gst-libs/gst/audio/audio-converter.h
View file

@ -75,8 +75,11 @@ GstAudioConverter * gst_audio_converter_new (GstAudioInfo *in_info,
void gst_audio_converter_free (GstAudioConverter * convert);
gboolean gst_audio_converter_set_config (GstAudioConverter * convert, GstStructure *config);
const GstStructure * gst_audio_converter_get_config (GstAudioConverter * convert);
gboolean gst_audio_converter_update_config (GstAudioConverter * convert,
gint in_rate, gint out_rate,
GstStructure *config);
const GstStructure * gst_audio_converter_get_config (GstAudioConverter * convert,
gint *in_rate, gint *out_rate);
gsize gst_audio_converter_get_out_frames (GstAudioConverter *convert,
gsize in_frames);