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spectrum: put number of channels to instance variable

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When freeing data the format might have changed. Thus we need to remember for
which format we allocated memory.
This commit is contained in:
Stefan Kost 2011-03-10 14:10:25 +02:00
parent dc1fe1d77f
commit 5bf267c485
2 changed files with 16 additions and 12 deletions
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27
gst/spectrum/gstspectrum.c
View file

@ -297,13 +297,17 @@ gst_spectrum_alloc_channel_data (GstSpectrum * spectrum)
GstSpectrumChannel *cd;
guint bands = spectrum->bands;
guint nfft = 2 * bands - 2;
guint channels = (spectrum->multi_channel) ?
g_assert (spectrum->channel_data == NULL);
spectrum->num_channels = (spectrum->multi_channel) ?
GST_AUDIO_FILTER (spectrum)->format.channels : 1;
GST_DEBUG_OBJECT (spectrum, "allocating data for %d channels", channels);
GST_DEBUG_OBJECT (spectrum, "allocating data for %d channels",
spectrum->num_channels);
spectrum->channel_data = g_new (GstSpectrumChannel, channels);
for (i = 0; i < channels; i++) {
spectrum->channel_data = g_new (GstSpectrumChannel, spectrum->num_channels);
for (i = 0; i < spectrum->num_channels; i++) {
cd = &spectrum->channel_data[i];
cd->fft_ctx = gst_fft_f32_new (nfft, FALSE);
cd->input = g_new0 (gfloat, nfft);
@ -317,15 +321,14 @@ gst_spectrum_alloc_channel_data (GstSpectrum * spectrum)
static void
gst_spectrum_free_channel_data (GstSpectrum * spectrum)
{
gint i;
GstSpectrumChannel *cd;
guint channels = (spectrum->multi_channel) ?
GST_AUDIO_FILTER (spectrum)->format.channels : 1;
GST_DEBUG_OBJECT (spectrum, "freeing data for %d channels", channels);
if (spectrum->channel_data) {
for (i = 0; i < channels; i++) {
gint i;
GstSpectrumChannel *cd;
GST_DEBUG_OBJECT (spectrum, "freeing data for %d channels",
spectrum->num_channels);
for (i = 0; i < spectrum->num_channels; i++) {
cd = &spectrum->channel_data[i];
if (cd->fft_ctx)
gst_fft_f32_free (cd->fft_ctx);

1
gst/spectrum/gstspectrum.h
View file

@ -72,6 +72,7 @@ struct _GstSpectrum
/* <private> */
GstSpectrumChannel *channel_data;
guint num_channels;
guint input_pos;
guint64 error_per_interval;