mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-19 23:06:49 +00:00
Code Issues 1 Projects Releases Wiki Activity

ext/wavpack/gstwavpackdec.*: Output audio in native byte order (which is also how we get samples from wavpack); outpu...

Browse source 
Original commit message from CVS:
* ext/wavpack/gstwavpackdec.c: (gst_wavpack_dec_init),
(gst_wavpack_dec_format_samples),
(gst_wavpack_dec_clip_outgoing_buffer), (gst_wavpack_dec_chain),
(gst_wavpack_dec_change_state):
* ext/wavpack/gstwavpackdec.h:
Output audio in native byte order (which is also how we get
samples from wavpack); output samples with 21-24 bit depth
with 32 bit width (makes things easier for us).
This commit is contained in:
Tim-Philipp Müller 2006-07-18 16:47:25 +00:00
parent 705d43314d
commit 1bcc754b02
2 changed files with 39 additions and 33 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

71
ext/wavpack/gstwavpackdec.c
View file

@ -51,11 +51,11 @@ static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"width = (int) { 8, 16, 24, 32 }, "
"depth = (int) { 8, 16, 24, 32 }, "
"width = (int) { 8, 16, 32 }, "
"depth = (int) [ 8, 32 ], "
"channels = (int) [ 1, 2 ], "
"rate = (int) [ 6000, 192000 ], "
"endianness = (int) LITTLE_ENDIAN, " "signed = (boolean) true")
"endianness = (int) BYTE_ORDER, " "signed = (boolean) true")
);
static GstFlowReturn gst_wavpack_dec_chain (GstPad * pad, GstBuffer * buffer);
@ -121,6 +121,7 @@ gst_wavpack_dec_init (GstWavpackDec * dec, GstWavpackDecClass * gklass)
dec->channels = 0;
dec->sample_rate = 0;
dec->width = 0;
dec->depth = 0;
gst_segment_init (&dec->segment, GST_FORMAT_UNDEFINED);
}
@ -137,39 +138,40 @@ gst_wavpack_dec_finalize (GObject * object)
}
static void
gst_wavpack_dec_format_samples (GstWavpackDec * dec, guint8 * dst,
gst_wavpack_dec_format_samples (GstWavpackDec * dec, guint8 * out_buffer,
int32_t * samples, guint num_samples)
{
gint i;
int32_t temp;
switch (dec->width) {
case 8:
for (i = 0; i < num_samples * dec->channels; ++i)
*dst++ = (guint8) (*samples++);
break;
case 16:
for (i = 0; i < num_samples * dec->channels; ++i) {
*dst++ = (guint8) (temp = *samples++);
*dst++ = (guint8) (temp >> 8);
case 8:{
gint8 *dst = (gint8 *) out_buffer;
gint8 *end = dst + (num_samples * dec->channels);
while (dst < end) {
*dst++ = (gint8) * samples++;
}
break;
}
case 16:{
gint16 *dst = (gint16 *) out_buffer;
gint16 *end = dst + (num_samples * dec->channels);
while (dst < end) {
*dst++ = (gint16) * samples++;
}
break;
}
case 24:
for (i = 0; i < num_samples * dec->channels; ++i) {
*dst++ = (guint8) (temp = *samples++);
*dst++ = (guint8) (temp >> 8);
*dst++ = (guint8) (temp >> 16);
}
break;
case 32:
for (i = 0; i < num_samples * dec->channels; ++i) {
*dst++ = (guint8) (temp = *samples++);
*dst++ = (guint8) (temp >> 8);
*dst++ = (guint8) (temp >> 16);
*dst++ = (guint8) (temp >> 24);
case 32:{
gint32 *dst = (gint32 *) out_buffer;
gint32 *end = dst + (num_samples * dec->channels);
while (dst < end) {
*dst++ = *samples++;
}
break;
}
default:
g_return_if_reached ();
break;
}
}
@ -193,7 +195,7 @@ gst_wavpack_dec_clip_outgoing_buffer (GstWavpackDec * dec, GstBuffer * buf)
GST_BUFFER_TIMESTAMP (buf) = cstart;
GST_BUFFER_DURATION (buf) -= diff;
diff = ((dec->width + 7) >> 3) * dec->channels
diff = (dec->width / 8) * dec->channels
* GST_CLOCK_TIME_TO_FRAMES (diff, dec->sample_rate);
GST_BUFFER_DATA (buf) += diff;
GST_BUFFER_SIZE (buf) -= diff;
@ -203,7 +205,7 @@ gst_wavpack_dec_clip_outgoing_buffer (GstWavpackDec * dec, GstBuffer * buf)
if (diff > 0) {
GST_BUFFER_DURATION (buf) -= diff;
diff = ((dec->width + 7) >> 3) * dec->channels
diff = (dec->width / 8) * dec->channels
* GST_CLOCK_TIME_TO_FRAMES (diff, dec->sample_rate);
GST_BUFFER_SIZE (buf) -= diff;
}
@ -269,19 +271,21 @@ gst_wavpack_dec_chain (GstPad * pad, GstBuffer * buf)
format_changed =
(dec->sample_rate != WavpackGetSampleRate (dec->context)) ||
(dec->channels != WavpackGetNumChannels (dec->context)) ||
(dec->width != WavpackGetBitsPerSample (dec->context));
(dec->depth != WavpackGetBitsPerSample (dec->context));
if (!GST_PAD_CAPS (dec->srcpad) || format_changed) {
GstCaps *caps;
dec->sample_rate = WavpackGetSampleRate (dec->context);
dec->channels = WavpackGetNumChannels (dec->context);
dec->width = WavpackGetBitsPerSample (dec->context);
dec->depth = WavpackGetBitsPerSample (dec->context);
dec->width =
(GST_ROUND_UP_8 (dec->depth) == 24) ? 32 : GST_ROUND_UP_8 (dec->depth);
caps = gst_caps_new_simple ("audio/x-raw-int",
"rate", G_TYPE_INT, dec->sample_rate,
"channels", G_TYPE_INT, dec->channels,
"depth", G_TYPE_INT, dec->width,
"depth", G_TYPE_INT, dec->depth,
"width", G_TYPE_INT, dec->width,
"endianness", G_TYPE_INT, G_LITTLE_ENDIAN,
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
@ -293,7 +297,7 @@ gst_wavpack_dec_chain (GstPad * pad, GstBuffer * buf)
gst_caps_unref (caps);
}
unpacked_size = wph.block_samples * ((dec->width + 7) >> 3) * dec->channels;
unpacked_size = wph.block_samples * (dec->width / 8) * dec->channels;
/* alloc buffer */
ret = gst_pad_alloc_buffer (dec->srcpad, GST_BUFFER_OFFSET (buf),
@ -423,6 +427,7 @@ gst_wavpack_dec_change_state (GstElement * element, GstStateChange transition)
dec->channels = 0;
dec->sample_rate = 0;
dec->width = 0;
dec->depth = 0;
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;

1
ext/wavpack/gstwavpackdec.h
View file

@ -60,6 +60,7 @@ struct _GstWavpackDec
guint sample_rate;
guint width;
guint depth;
guint channels;
gint error_count;