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ext/twolame/gsttwolame.*: Allow raw float samples as input for encoding.

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Original commit message from CVS:
* ext/twolame/gsttwolame.c: (gst_two_lame_sink_setcaps),
(gst_two_lame_chain):
* ext/twolame/gsttwolame.h:
Allow raw float samples as input for encoding.
This commit is contained in:
Sebastian Dröge 2008-08-07 14:34:03 +00:00
parent 2e1e65e154
commit eea5ff778f
3 changed files with 47 additions and 12 deletions
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7
ChangeLog
View file

@ -1,3 +1,10 @@
2008-08-07 Sebastian Dröge <sebastian.droege@collabora.co.uk>
* ext/twolame/gsttwolame.c: (gst_two_lame_sink_setcaps),
(gst_two_lame_chain):
* ext/twolame/gsttwolame.h:
Allow raw float samples as input for encoding.
2008-08-07 Stefan Kost <ensonic@users.sf.net>
* ext/jack/gstjackaudiosrc.c:

51
ext/twolame/gsttwolame.c
View file

@ -62,11 +62,16 @@ GST_DEBUG_CATEGORY_STATIC (debug);
/* TwoLAME can do MPEG-1, MPEG-2 so it has 6 possible
* sample rates it supports */
static GstStaticPadTemplate gst_two_lame_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"endianness = (int) " G_STRINGIFY (G_BYTE_ORDER) ", "
GST_STATIC_CAPS ("audio/x-raw-float, "
"endianness = (int) BYTE_ORDER, "
"width = (int) 32, "
"rate = (int) { 16000, 22050, 24000, 32000, 44100, 48000 }, "
"channels = (int) [ 1, 2 ]; "
"audio/x-raw-int, "
"endianness = (int) BYTE_ORDER, "
"signed = (boolean) true, "
"width = (int) 16, "
"depth = (int) 16, "
@ -355,6 +360,11 @@ gst_two_lame_sink_setcaps (GstPad * pad, GstCaps * caps)
twolame = GST_TWO_LAME (GST_PAD_PARENT (pad));
structure = gst_caps_get_structure (caps, 0);
if (strcmp (gst_structure_get_name (structure), "audio/x-raw-int") == 0)
twolame->float_input = FALSE;
else
twolame->float_input = TRUE;
if (!gst_structure_get_int (structure, "rate", &twolame->samplerate))
goto no_rate;
if (!gst_structure_get_int (structure, "channels", &twolame->num_channels))
@ -720,27 +730,44 @@ gst_two_lame_chain (GstPad * pad, GstBuffer * buf)
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
num_samples = size / 2;
if (twolame->float_input)
num_samples = size / 4;
else
num_samples = size / 2;
/* allocate space for output */
mp3_buffer_size = 1.25 * num_samples + 16384;
mp3_data = g_malloc (mp3_buffer_size);
if (twolame->num_channels == 1) {
mp3_size = twolame_encode_buffer (twolame->glopts,
(short int *) data,
(short int *) data, num_samples, mp3_data, mp3_buffer_size);
if (twolame->float_input)
mp3_size = twolame_encode_buffer_float32 (twolame->glopts,
(float *) data,
(float *) data, num_samples, mp3_data, mp3_buffer_size);
else
mp3_size = twolame_encode_buffer (twolame->glopts,
(short int *) data,
(short int *) data, num_samples, mp3_data, mp3_buffer_size);
} else {
mp3_size = twolame_encode_buffer_interleaved (twolame->glopts,
(short int *) data,
num_samples / twolame->num_channels, mp3_data, mp3_buffer_size);
if (twolame->float_input)
mp3_size = twolame_encode_buffer_float32_interleaved (twolame->glopts,
(float *) data,
num_samples / twolame->num_channels, mp3_data, mp3_buffer_size);
else
mp3_size = twolame_encode_buffer_interleaved (twolame->glopts,
(short int *) data,
num_samples / twolame->num_channels, mp3_data, mp3_buffer_size);
}
GST_LOG_OBJECT (twolame, "encoded %d bytes of audio to %d bytes of mp3",
size, mp3_size);
duration = gst_util_uint64_scale_int (size, GST_SECOND,
2 * twolame->samplerate * twolame->num_channels);
if (twolame->float_input)
duration = gst_util_uint64_scale_int (size, GST_SECOND,
4 * twolame->samplerate * twolame->num_channels);
else
duration = gst_util_uint64_scale_int (size, GST_SECOND,
2 * twolame->samplerate * twolame->num_channels);
if (GST_BUFFER_DURATION (buf) != GST_CLOCK_TIME_NONE &&
GST_BUFFER_DURATION (buf) != duration) {

1
ext/twolame/gsttwolame.h
View file

@ -56,6 +56,7 @@ struct _GstTwoLame {
gint samplerate;
gint num_channels;
gboolean float_input;
gboolean setup;
gint mode;