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0afac375b4
Original commit message from CVS: * ext/alsa/gstalsamixeroptions.c: (gst_alsa_mixer_options_class_init): * ext/alsa/gstalsamixertrack.c: (gst_alsa_mixer_track_class_init): * ext/ogg/gstoggdemux.c: (gst_ogg_pad_class_init): * ext/ogg/gstoggmux.c: (gst_ogg_mux_class_init): * ext/ogg/gstoggparse.c: (gst_ogg_parse_class_init): * gst-libs/gst/audio/gstaudioclock.c: (gst_audio_clock_class_init): * gst-libs/gst/audio/gstaudiofilter.c: (gst_audio_filter_class_init): * gst-libs/gst/audio/gstaudiosink.c: (gst_audioringbuffer_class_init): * gst-libs/gst/audio/gstaudiosrc.c: (gst_audioringbuffer_class_init): * gst-libs/gst/audio/gstringbuffer.c: (gst_ring_buffer_class_init): * gst-libs/gst/interfaces/colorbalancechannel.c: (gst_color_balance_channel_class_init): * gst-libs/gst/interfaces/mixeroptions.c: (gst_mixer_options_class_init): * gst-libs/gst/interfaces/mixertrack.c: (gst_mixer_track_class_init): * gst-libs/gst/interfaces/tunerchannel.c: (gst_tuner_channel_class_init): * gst-libs/gst/interfaces/tunernorm.c: (gst_tuner_norm_class_init): * gst-libs/gst/netbuffer/gstnetbuffer.c: (gst_netbuffer_class_init): * gst-libs/gst/rtp/gstbasertppayload.c: (gst_basertppayload_class_init): * gst/playback/gstdecodebin.c: (gst_decode_bin_class_init): * gst/playback/gstplaybasebin.c: (gst_play_base_bin_class_init): * gst/playback/gstplaybin.c: (gst_play_bin_class_init): * gst/playback/gststreaminfo.c: (gst_stream_info_class_init): * gst/playback/gststreamselector.c: (gst_stream_selector_class_init): * gst/subparse/gstsubparse.c: (gst_sub_parse_class_init): * gst/tcp/gsttcpclientsink.c: (gst_tcp_client_sink_class_init): * sys/v4l/gstv4lcolorbalance.c: (gst_v4l_color_balance_channel_class_init): * sys/v4l/gstv4ljpegsrc.c: (gst_v4ljpegsrc_class_init): * sys/v4l/gstv4lmjpegsink.c: (gst_v4lmjpegsink_class_init): * sys/v4l/gstv4lmjpegsrc.c: (gst_v4lmjpegsrc_class_init): * sys/v4l/gstv4ltuner.c: (gst_v4l_tuner_channel_class_init), (gst_v4l_tuner_norm_class_init): * sys/ximage/ximagesink.c: (gst_ximagesink_class_init): * sys/xvimage/xvimagesink.c: (gst_xvimagesink_class_init): * tests/old/testsuite/alsa/sinesrc.c: (sinesrc_class_init): Fix #337365 (g_type_class_ref <-> g_type_class_peek_parent)
349 lines
9 KiB
C
349 lines
9 KiB
C
/*
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* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
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*
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* sinesrc.c: An elemnt emitting a sine src in lots of different formats
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "sinesrc.h"
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#include <math.h>
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#include <string.h> /* memcpy */
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#define SAMPLES_PER_WAVE 200
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static GstStaticPadTemplate sinesrc_src_factory =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-raw-int, "
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"endianness = (int) { LITTLE_ENDIAN, BIG_ENDIAN }, "
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"signed = (boolean) { FALSE, TRUE }, "
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"width = (int) [8, 32], "
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"depth = (int) [8, 32], "
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"rate = (int) [8000, 192000], "
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"channels = (int) [1, 16];"
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"audio/x-raw-float, "
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"endianness = (int) BYTE_ORDER, "
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"width = (int) {32, 64}, "
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"rate = (int) [8000, 192000], " "channels = (int) [1, 16]")
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);
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static GstElementClass *parent_class = NULL;
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static void sinesrc_init (SineSrc * src);
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static void sinesrc_class_init (SineSrcClass * klass);
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static GstData *sinesrc_get (GstPad * pad);
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static GstStateChangeReturn sinesrc_change_state (GstElement * element,
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GstStateChange transition);
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GType
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sinesrc_get_type (void)
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{
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static GType sinesrc_type = 0;
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if (!sinesrc_type) {
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static const GTypeInfo sinesrc_info = {
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sizeof (SineSrcClass), NULL, NULL,
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(GClassInitFunc) sinesrc_class_init, NULL, NULL,
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sizeof (SineSrc), 0,
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(GInstanceInitFunc) sinesrc_init,
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};
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sinesrc_type = g_type_register_static (GST_TYPE_ELEMENT, "SineSrc",
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&sinesrc_info, 0);
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}
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return sinesrc_type;
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}
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static void
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sinesrc_class_init (SineSrcClass * klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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element_class->change_state = sinesrc_change_state;
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parent_class = g_type_class_peek_parent (klass);
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}
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static void
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sinesrc_init (SineSrc * src)
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{
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src->src =
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gst_pad_new_from_template (gst_static_pad_template_get
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(&sinesrc_src_factory), "src");
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gst_element_add_pad (GST_ELEMENT (src), src->src);
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gst_pad_set_get_function (src->src, sinesrc_get);
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src->width = 16;
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src->depth = 16;
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src->sign = TRUE;
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src->endianness = G_BYTE_ORDER;
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src->rate = 44100;
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src->channels = 1;
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src->type = SINE_SRC_INT;
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src->newcaps = TRUE;
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src->pre_get_func = NULL;
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GST_OBJECT (src)->name = "sinesrc";
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}
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static void
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sinesrc_force_caps (SineSrc * src)
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{
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GstCaps *caps;
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if (!src->newcaps)
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return;
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src->newcaps = FALSE;
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switch (src->type) {
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case SINE_SRC_INT:
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caps = gst_caps_new_simple ("audio/x-raw-int",
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"signed", G_TYPE_BOOLEAN, src->sign,
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"depth", G_TYPE_INT, src->depth, NULL);
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if (src->width > 8)
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gst_caps_set_simple (caps,
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"endianness", G_TYPE_INT, src->endianness, NULL);
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break;
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case SINE_SRC_FLOAT:
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g_assert (src->width == 32 || src->width == 64);
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caps = gst_caps_new_simple ("audio/x-raw-float",
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"endianness", G_TYPE_INT, src->endianness, NULL);
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break;
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default:
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caps = NULL;
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g_assert_not_reached ();
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}
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gst_caps_set_simple (caps,
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"width", G_TYPE_INT, src->width,
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"rate", G_TYPE_INT, src->rate,
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"channels", G_TYPE_INT, src->channels, NULL);
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if (gst_pad_try_set_caps (src->src, caps) != GST_PAD_LINK_OK)
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g_assert_not_reached ();
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}
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/* always return 1 wave
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* there are 200 waves in 1 second, so the frequency is samplerate/200
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*/
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static guint8
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UIDENTITY (guint8 x)
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{
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return x;
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};
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static gint8
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IDENTITY (gint8 x)
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{
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return x;
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};
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#define POPULATE(format, be_func, le_func) G_STMT_START {\
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format val = (format) int_value;\
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format *p = data;\
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switch (src->endianness) {\
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case G_LITTLE_ENDIAN:\
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val = le_func (val);\
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break;\
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case G_BIG_ENDIAN:\
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val = be_func (val);\
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break;\
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default: \
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g_assert_not_reached ();\
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};\
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for (j = 0; j < src->channels; j++) {\
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*p = val;\
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p ++;\
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}\
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data = p;\
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} G_STMT_END
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static GstData *
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sinesrc_get (GstPad * pad)
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{
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GstBuffer *buf;
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SineSrc *src;
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void *data;
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gint i, j;
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gdouble value;
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g_return_val_if_fail (pad != NULL, NULL);
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src = SINESRC (gst_pad_get_parent (pad));
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if (src->pre_get_func)
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src->pre_get_func (src);
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buf = gst_buffer_new_and_alloc ((src->width / 8) * src->channels *
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SAMPLES_PER_WAVE);
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g_assert (buf);
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data = GST_BUFFER_DATA (buf);
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g_assert (data);
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for (i = 0; i < SAMPLES_PER_WAVE; i++) {
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value = sin (i * 2 * M_PI / SAMPLES_PER_WAVE);
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switch (src->type) {
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case SINE_SRC_INT:{
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gint64 int_value =
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(value + (src->sign ? 0 : 1)) * (((guint64) 1) << (src->depth - 1));
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if (int_value ==
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(1 + (src->sign ? 0 : 1)) * (((guint64) 1) << (src->depth - 1)))
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int_value--;
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switch (src->width) {
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case 8:
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if (src->sign)
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POPULATE (gint8, IDENTITY, IDENTITY);
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else
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POPULATE (guint8, UIDENTITY, UIDENTITY);
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break;
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case 16:
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if (src->sign)
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POPULATE (gint16, GINT16_TO_BE, GINT16_TO_LE);
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else
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POPULATE (guint16, GUINT16_TO_BE, GUINT16_TO_LE);
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break;
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case 24:
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if (src->sign) {
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gpointer p;
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gint32 val = (gint32) int_value;
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switch (src->endianness) {
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case G_LITTLE_ENDIAN:
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val = GINT32_TO_LE (val);
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break;
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case G_BIG_ENDIAN:
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val = GINT32_TO_BE (val);
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break;
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default:
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g_assert_not_reached ();
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};
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p = &val;
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if (src->endianness == G_BIG_ENDIAN)
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p++;
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for (j = 0; j < src->channels; j++) {
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memcpy (data, p, 3);
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data += 3;
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}
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} else {
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gpointer p;
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guint32 val = (guint32) int_value;
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switch (src->endianness) {
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case G_LITTLE_ENDIAN:
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val = GUINT32_TO_LE (val);
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break;
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case G_BIG_ENDIAN:
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val = GUINT32_TO_BE (val);
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break;
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default:
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g_assert_not_reached ();
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};
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p = &val;
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if (src->endianness == G_BIG_ENDIAN)
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p++;
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for (j = 0; j < src->channels; j++) {
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memcpy (data, p, 3);
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data += 3;
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}
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}
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break;
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case 32:
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if (src->sign)
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POPULATE (gint32, GINT32_TO_BE, GINT32_TO_LE);
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else
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POPULATE (guint32, GUINT32_TO_BE, GUINT32_TO_LE);
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break;
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default:
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g_assert_not_reached ();
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}
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break;
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}
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case SINE_SRC_FLOAT:
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if (src->width == 32) {
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gfloat *p = (gfloat *) data;
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gfloat fval = (gfloat) value;
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for (j = 0; j < src->channels; j++) {
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*p = fval;
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p++;
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}
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data = p;
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break;
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}
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if (src->width == 64) {
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gdouble *p = (gdouble *) data;
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for (j = 0; j < src->channels; j++) {
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*p = value;
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p++;
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}
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data = p;
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break;
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}
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g_assert_not_reached ();
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default:
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g_assert_not_reached ();
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}
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}
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if (src->newcaps) {
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sinesrc_force_caps (src);
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}
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return GST_DATA (buf);
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}
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GstElement *
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sinesrc_new (void)
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{
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return GST_ELEMENT (g_object_new (TYPE_SINESRC, NULL));
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}
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void
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sinesrc_set_pre_get_func (SineSrc * src, PreGetFunc func)
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{
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src->pre_get_func = func;
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}
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static GstStateChangeReturn
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sinesrc_change_state (GstElement * element, GstStateChange transition)
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{
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SineSrc *sinesrc;
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g_return_val_if_fail (element != NULL, FALSE);
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sinesrc = SINESRC (element);
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switch (transition) {
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case GST_STATE_CHANGE_NULL_TO_READY:
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case GST_STATE_CHANGE_READY_TO_PAUSED:
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case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
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case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
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break;
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case GST_STATE_CHANGE_PAUSED_TO_READY:
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sinesrc->newcaps = TRUE;
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break;
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case GST_STATE_CHANGE_READY_TO_NULL:
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break;
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default:
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g_assert_not_reached ();
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}
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if (GST_ELEMENT_CLASS (parent_class)->change_state)
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return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
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return GST_STATE_CHANGE_SUCCESS;
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}
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