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	202	channel_layout &= channel - 1;
203	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	155	int av_get_channel_layout_channel_index(uint64_t channel_layout,
156	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	*/