audioconvert: add a function for getting the name of a single channel.

Anton Khirnov committed 14 years ago

Commit 5df320e1 parent 406b2572 files · +18 −0Browse files

Unified · Split

2 files

libavutil/audioconvert.c +11 −0
libavutil/audioconvert.h +7 −0

libavutil/audioconvert.c+11−0

@@ -202,3 +202,14 @@ int av_get_channel_layout_channel_index(uint64_t channel_layout, · 201 unmodified lines
202	channel_layout &= channel - 1;	202	channel_layout &= channel - 1;
203	return av_get_channel_layout_nb_channels(channel_layout);	203	return av_get_channel_layout_nb_channels(channel_layout);
204	}	204	}
		205
		206	const char *av_get_channel_name(uint64_t channel)
		207	{
		208	int i;
		209	if (av_get_channel_layout_nb_channels(channel) != 1)
		210	return NULL;
		211	for (i = 0; i < 64; i++)
		212	if ((1ULL<<i) & channel)
		213	return get_channel_name(i);
		214	return NULL;
		215	}

libavutil/audioconvert.h+7−0

@@ -155,6 +155,13 @@ uint64_t av_get_default_channel_layout(int nb_channels); · 154 unmodified lines
155	int av_get_channel_layout_channel_index(uint64_t channel_layout,	155	int av_get_channel_layout_channel_index(uint64_t channel_layout,
156	uint64_t channel);	156	uint64_t channel);
157		157
		158	/**
		159	* Get the name of a given channel.
		160	*
		161	* @return channel name on success, NULL on error.
		162	*/
		163	const char *av_get_channel_name(uint64_t channel);
		164
158	/**	165	/**
159	* @}	166	* @}
160	*/	167	*/