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opus: Handle GstByteWriter return values

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This commit is contained in:
Edward Hervey 2012-04-04 11:51:28 +02:00 committed by Sebastian Dröge
parent 12721ecc56
commit c00bdd866b
1 changed files with 14 additions and 10 deletions
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24
ext/opus/gstopusheader.c
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@ -33,6 +33,7 @@ gst_opus_enc_create_id_buffer (gint nchannels, gint n_stereo_streams,
{
GstBuffer *buffer;
GstByteWriter bw;
gboolean hdl = TRUE;
g_return_val_if_fail (nchannels > 0 && nchannels < 256, NULL);
g_return_val_if_fail (n_stereo_streams >= 0, NULL);
@ -41,19 +42,22 @@ gst_opus_enc_create_id_buffer (gint nchannels, gint n_stereo_streams,
gst_byte_writer_init (&bw);
/* See http://wiki.xiph.org/OggOpus */
gst_byte_writer_put_data (&bw, (const guint8 *) "OpusHead", 8);
gst_byte_writer_put_uint8 (&bw, 0); /* version number */
gst_byte_writer_put_uint8 (&bw, nchannels);
gst_byte_writer_put_uint16_le (&bw, 0); /* pre-skip */
gst_byte_writer_put_uint32_le (&bw, sample_rate);
gst_byte_writer_put_uint16_le (&bw, 0); /* output gain */
gst_byte_writer_put_uint8 (&bw, channel_mapping_family);
hdl &= gst_byte_writer_put_data (&bw, (const guint8 *) "OpusHead", 8);
hdl &= gst_byte_writer_put_uint8 (&bw, 0); /* version number */
hdl &= gst_byte_writer_put_uint8 (&bw, nchannels);
hdl &= gst_byte_writer_put_uint16_le (&bw, 0); /* pre-skip */
hdl &= gst_byte_writer_put_uint32_le (&bw, sample_rate);
hdl &= gst_byte_writer_put_uint16_le (&bw, 0); /* output gain */
hdl &= gst_byte_writer_put_uint8 (&bw, channel_mapping_family);
if (channel_mapping_family > 0) {
gst_byte_writer_put_uint8 (&bw, nchannels - n_stereo_streams);
gst_byte_writer_put_uint8 (&bw, n_stereo_streams);
gst_byte_writer_put_data (&bw, channel_mapping, nchannels);
hdl &= gst_byte_writer_put_uint8 (&bw, nchannels - n_stereo_streams);
hdl &= gst_byte_writer_put_uint8 (&bw, n_stereo_streams);
hdl &= gst_byte_writer_put_data (&bw, channel_mapping, nchannels);
}
if (!hdl)
GST_WARNING ("Error creating header");
buffer = gst_byte_writer_reset_and_get_buffer (&bw);
GST_BUFFER_OFFSET (buffer) = 0;