mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-24 10:41:04 +00:00
b5af832d7b
Original commit message from CVS: * ext/aalib/gstaasink.c: (gst_aasink_class_init): * ext/esd/esdsink.c: (gst_esdsink_class_init): * ext/flac/gstflactag.c: (gst_flac_tag_class_init): * ext/gdk_pixbuf/gstgdkpixbuf.c: (gst_gdk_pixbuf_class_init): * ext/jpeg/gstjpegenc.c: (gst_jpegenc_class_init): * ext/jpeg/gstsmokedec.c: (gst_smokedec_class_init): * ext/jpeg/gstsmokeenc.c: (gst_smokeenc_class_init): * ext/libcaca/gstcacasink.c: (gst_cacasink_class_init): * ext/libmng/gstmngdec.c: (gst_mngdec_class_init): * ext/libmng/gstmngenc.c: (gst_mngenc_class_init): * ext/libpng/gstpngdec.c: (gst_pngdec_class_init): * ext/libpng/gstpngenc.c: (gst_pngenc_class_init): * ext/mikmod/gstmikmod.c: (gst_mikmod_class_init): * ext/shout2/gstshout2.c: (gst_shout2send_class_init): * ext/speex/gstspeexenc.c: (gst_speexenc_class_init): * gst/alpha/gstalpha.c: (gst_alpha_class_init): * gst/avi/gstavimux.c: (gst_avimux_class_init): * gst/debug/efence.c: (gst_efence_class_init): * gst/debug/negotiation.c: (gst_negotiation_class_init): * gst/flx/gstflxdec.c: (gst_flxdec_class_init): * gst/goom/gstgoom.c: (gst_goom_class_init): * gst/id3demux/gstid3demux.c: (gst_id3demux_class_init): * gst/interleave/deinterleave.c: (deinterleave_class_init): * gst/interleave/interleave.c: (interleave_class_init): * gst/law/alaw-decode.c: (gst_alawdec_class_init): * gst/law/alaw-encode.c: (gst_alawenc_class_init): * gst/law/mulaw-encode.c: (gst_mulawenc_class_init): * gst/median/gstmedian.c: (gst_median_class_init): * gst/monoscope/gstmonoscope.c: (gst_monoscope_class_init): * gst/multipart/multipartmux.c: (gst_multipart_mux_class_init): * gst/rtp/gstasteriskh263.c: (gst_asteriskh263_class_init): * gst/rtp/gstrtpL16depay.c: (gst_rtp_L16depay_class_init): * gst/rtp/gstrtpL16pay.c: (gst_rtpL16pay_class_init): * gst/rtp/gstrtpamrdepay.c: (gst_rtp_amr_depay_class_init): * gst/rtp/gstrtpamrpay.c: (gst_rtp_amr_pay_class_init): * gst/rtp/gstrtpdepay.c: (gst_rtp_depay_class_init): * gst/rtp/gstrtpgsmdepay.c: (gst_rtp_gsm_depay_class_init): * gst/rtp/gstrtpgsmpay.c: (gst_rtp_gsm_pay_class_init): * gst/rtp/gstrtph263pay.c: (gst_rtp_h263_pay_class_init): * gst/rtp/gstrtph263pdepay.c: (gst_rtp_h263p_depay_class_init): * gst/rtp/gstrtph263ppay.c: (gst_rtp_h263p_pay_class_init): * gst/rtp/gstrtpmp4gpay.c: (gst_rtp_mp4g_pay_class_init): * gst/rtp/gstrtpmp4vdepay.c: (gst_rtp_mp4v_depay_class_init): * gst/rtp/gstrtpmp4vpay.c: (gst_rtp_mp4v_pay_class_init): * gst/rtp/gstrtpmpadepay.c: (gst_rtp_mpa_depay_class_init): * gst/rtp/gstrtpmpapay.c: (gst_rtp_mpa_pay_class_init): * gst/rtp/gstrtppcmadepay.c: (gst_rtp_pcma_depay_class_init): * gst/rtp/gstrtppcmapay.c: (gst_rtp_pcma_pay_class_init): * gst/rtp/gstrtppcmudepay.c: (gst_rtp_pcmu_depay_class_init): * gst/rtp/gstrtppcmupay.c: (gst_rtp_pcmu_pay_class_init): * gst/rtp/gstrtpspeexdepay.c: (gst_rtp_speex_depay_class_init): * gst/rtp/gstrtpspeexpay.c: (gst_rtp_speex_pay_class_init): * gst/rtsp/gstrtpdec.c: (gst_rtpdec_class_init): * gst/rtsp/gstrtspsrc.c: (gst_rtspsrc_class_init): * gst/smpte/gstsmpte.c: (gst_smpte_class_init): * gst/udp/gstdynudpsink.c: (gst_dynudpsink_class_init): * gst/udp/gstmultiudpsink.c: (gst_multiudpsink_class_init): * gst/udp/gstudpsink.c: (gst_udpsink_class_init): * gst/videomixer/videomixer.c: (gst_videomixer_class_init): * gst/wavenc/gstwavenc.c: (gst_wavenc_class_init): * sys/oss/gstossdmabuffer.c: (gst_ossdmabuffer_class_init): * sys/oss/gstosssink.c: (gst_oss_sink_class_init): * sys/osxaudio/gstosxaudioelement.c: (gst_osxaudioelement_class_init): * sys/osxaudio/gstosxaudiosink.c: (gst_osxaudiosink_class_init): * sys/osxaudio/gstosxaudiosrc.c: (gst_osxaudiosrc_class_init): * sys/sunaudio/gstsunaudiosink.c: (gst_sunaudiosink_class_init): Fix #337365 (g_type_class_ref <-> g_type_class_peek_parent)
252 lines
6.9 KiB
C
252 lines
6.9 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* PCM - A-Law conversion
|
|
* Copyright (C) 2000 by Abramo Bagnara <abramo@alsa-project.org>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
#include <gst/gst.h>
|
|
#include "alaw-decode.h"
|
|
|
|
extern GstPadTemplate *alawdec_src_template, *alawdec_sink_template;
|
|
|
|
/* Stereo signals and args */
|
|
enum
|
|
{
|
|
/* FILL ME */
|
|
LAST_SIGNAL
|
|
};
|
|
|
|
enum
|
|
{
|
|
ARG_0
|
|
};
|
|
|
|
static void gst_alawdec_class_init (GstALawDecClass * klass);
|
|
static void gst_alawdec_base_init (GstALawDecClass * klass);
|
|
static void gst_alawdec_init (GstALawDec * alawdec);
|
|
|
|
static GstFlowReturn gst_alawdec_chain (GstPad * pad, GstBuffer * buffer);
|
|
|
|
static GstElementClass *parent_class = NULL;
|
|
|
|
/*static guint gst_stereo_signals[LAST_SIGNAL] = { 0 }; */
|
|
|
|
/*
|
|
* alaw_to_s16() - Convert an A-law value to 16-bit linear PCM
|
|
*
|
|
*/
|
|
static gint
|
|
alaw_to_s16 (guint8 a_val)
|
|
{
|
|
gint t;
|
|
gint seg;
|
|
|
|
a_val ^= 0x55;
|
|
t = a_val & 0x7f;
|
|
if (t < 16)
|
|
t = (t << 4) + 8;
|
|
else {
|
|
seg = (t >> 4) & 0x07;
|
|
t = ((t & 0x0f) << 4) + 0x108;
|
|
t <<= seg - 1;
|
|
}
|
|
return ((a_val & 0x80) ? t : -t);
|
|
}
|
|
|
|
static GstCaps *
|
|
alawdec_getcaps (GstPad * pad)
|
|
{
|
|
GstALawDec *alawdec;
|
|
GstPad *otherpad;
|
|
GstCaps *base_caps, *othercaps;
|
|
|
|
alawdec = GST_ALAWDEC (GST_PAD_PARENT (pad));
|
|
|
|
/* we can do what our template says */
|
|
base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
|
|
|
|
if (pad == alawdec->sinkpad) {
|
|
otherpad = alawdec->srcpad;
|
|
} else {
|
|
otherpad = alawdec->sinkpad;
|
|
}
|
|
/* now intersect rate and channels from peer caps */
|
|
othercaps = gst_pad_peer_get_caps (otherpad);
|
|
if (othercaps) {
|
|
GstStructure *structure;
|
|
const GValue *orate, *ochans;
|
|
const GValue *rate, *chans;
|
|
GValue irate = { 0 }, ichans = {
|
|
0};
|
|
|
|
structure = gst_caps_get_structure (othercaps, 0);
|
|
orate = gst_structure_get_value (structure, "rate");
|
|
ochans = gst_structure_get_value (structure, "channels");
|
|
if (!orate || !ochans)
|
|
goto done;
|
|
|
|
structure = gst_caps_get_structure (base_caps, 0);
|
|
rate = gst_structure_get_value (structure, "rate");
|
|
chans = gst_structure_get_value (structure, "channels");
|
|
if (!rate || !chans)
|
|
goto done;
|
|
|
|
gst_value_intersect (&irate, orate, rate);
|
|
gst_value_intersect (&ichans, ochans, chans);
|
|
|
|
/* Set the samplerate/channels on the to-be-returned caps */
|
|
structure = gst_caps_get_structure (base_caps, 0);
|
|
gst_structure_set_value (structure, "rate", &irate);
|
|
gst_structure_set_value (structure, "channels", &ichans);
|
|
|
|
gst_caps_unref (othercaps);
|
|
}
|
|
|
|
done:
|
|
return base_caps;
|
|
}
|
|
|
|
static gboolean
|
|
alawdec_setcaps (GstPad * pad, GstCaps * caps)
|
|
{
|
|
GstALawDec *alawdec;
|
|
GstPad *otherpad;
|
|
GstStructure *structure;
|
|
const GValue *rate, *chans;
|
|
GstCaps *base_caps;
|
|
|
|
alawdec = GST_ALAWDEC (GST_PAD_PARENT (pad));
|
|
|
|
/* take rate and channels */
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
rate = gst_structure_get_value (structure, "rate");
|
|
chans = gst_structure_get_value (structure, "channels");
|
|
if (!rate || !chans)
|
|
return FALSE;
|
|
|
|
if (pad == alawdec->srcpad) {
|
|
otherpad = alawdec->sinkpad;
|
|
} else {
|
|
otherpad = alawdec->srcpad;
|
|
}
|
|
|
|
/* fill in values for otherpad */
|
|
base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad));
|
|
structure = gst_caps_get_structure (base_caps, 0);
|
|
gst_structure_set_value (structure, "rate", rate);
|
|
gst_structure_set_value (structure, "channels", chans);
|
|
|
|
/* and set on otherpad */
|
|
gst_pad_set_caps (otherpad, base_caps);
|
|
|
|
gst_caps_unref (base_caps);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
GType
|
|
gst_alawdec_get_type (void)
|
|
{
|
|
static GType alawdec_type = 0;
|
|
|
|
if (!alawdec_type) {
|
|
static const GTypeInfo alawdec_info = {
|
|
sizeof (GstALawDecClass),
|
|
(GBaseInitFunc) gst_alawdec_base_init,
|
|
NULL,
|
|
(GClassInitFunc) gst_alawdec_class_init,
|
|
NULL,
|
|
NULL,
|
|
sizeof (GstALawDec),
|
|
0,
|
|
(GInstanceInitFunc) gst_alawdec_init,
|
|
};
|
|
|
|
alawdec_type =
|
|
g_type_register_static (GST_TYPE_ELEMENT, "GstALawDec", &alawdec_info,
|
|
0);
|
|
}
|
|
return alawdec_type;
|
|
}
|
|
|
|
static void
|
|
gst_alawdec_base_init (GstALawDecClass * klass)
|
|
{
|
|
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
|
|
GstElementDetails alawdec_details =
|
|
GST_ELEMENT_DETAILS ("A Law audio decoder",
|
|
"Codec/Decoder/Audio",
|
|
"Convert 8bit A law to 16bit PCM",
|
|
"Zaheer Abbas Merali <zaheerabbas at merali dot org>");
|
|
|
|
gst_element_class_add_pad_template (element_class, alawdec_src_template);
|
|
gst_element_class_add_pad_template (element_class, alawdec_sink_template);
|
|
gst_element_class_set_details (element_class, &alawdec_details);
|
|
}
|
|
|
|
static void
|
|
gst_alawdec_class_init (GstALawDecClass * klass)
|
|
{
|
|
parent_class = g_type_class_peek_parent (klass);
|
|
}
|
|
|
|
static void
|
|
gst_alawdec_init (GstALawDec * alawdec)
|
|
{
|
|
alawdec->sinkpad = gst_pad_new_from_template (alawdec_sink_template, "sink");
|
|
gst_pad_set_setcaps_function (alawdec->sinkpad, alawdec_setcaps);
|
|
gst_pad_set_getcaps_function (alawdec->sinkpad, alawdec_getcaps);
|
|
gst_pad_set_chain_function (alawdec->sinkpad, gst_alawdec_chain);
|
|
gst_element_add_pad (GST_ELEMENT (alawdec), alawdec->sinkpad);
|
|
|
|
alawdec->srcpad = gst_pad_new_from_template (alawdec_src_template, "src");
|
|
gst_pad_set_setcaps_function (alawdec->srcpad, alawdec_setcaps);
|
|
gst_pad_set_getcaps_function (alawdec->srcpad, alawdec_getcaps);
|
|
gst_element_add_pad (GST_ELEMENT (alawdec), alawdec->srcpad);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_alawdec_chain (GstPad * pad, GstBuffer * buffer)
|
|
{
|
|
GstALawDec *alawdec;
|
|
gint16 *linear_data;
|
|
guint8 *alaw_data;
|
|
GstBuffer *outbuf;
|
|
gint i;
|
|
|
|
alawdec = GST_ALAWDEC (GST_OBJECT_PARENT (pad));
|
|
|
|
alaw_data = (guint8 *) GST_BUFFER_DATA (buffer);
|
|
outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buffer) * 2);
|
|
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
|
|
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
|
|
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (alawdec->srcpad));
|
|
linear_data = (gint16 *) GST_BUFFER_DATA (outbuf);
|
|
|
|
for (i = 0; i < GST_BUFFER_SIZE (buffer); i++) {
|
|
*linear_data = alaw_to_s16 (*alaw_data);
|
|
linear_data++;
|
|
alaw_data++;
|
|
}
|
|
|
|
gst_buffer_unref (buffer);
|
|
return gst_pad_push (alawdec->srcpad, outbuf);
|
|
}
|