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fe7b1abb42
Original commit message from CVS: first try at a general gstreamer audio library with helper functions
38 lines
714 B
C
38 lines
714 B
C
#include "gstaudio.h"
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double
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gst_audio_length (GstPad* pad, GstBuffer* buf)
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{
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/* calculate length in seconds
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* of audio buffer buf
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* based on capabilities of pad
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*/
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long bytes = 0;
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int width = 0;
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int channels = 0;
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long rate = 0L;
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double length;
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GstCaps *caps = NULL;
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/* get caps of pad */
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caps = GST_PAD_CAPS (pad);
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if (caps == NULL)
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{
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/* ERROR: could not get caps of pad */
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length = 0.0;
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}
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else
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{
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bytes = GST_BUFFER_SIZE (buf);
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width = gst_caps_get_int (caps, "width");
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channels = gst_caps_get_int (caps, "channels");
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rate = gst_caps_get_int (caps, "rate");
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length = (bytes * 8.0) / (double) (rate * channels * width);
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}
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return length;
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}
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