mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-18 15:51:11 +00:00
8248ff8232
The audio library considers them as encoded formats and does not fill in the sample width. The audio ringbuffers identifies the format as alaw/mulaw and that is always 8 bits.
370 lines
9.9 KiB
C
370 lines
9.9 KiB
C
/*
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* GStreamer pulseaudio plugin
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*
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* Copyright (c) 2004-2008 Lennart Poettering
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*
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* gst-pulse is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of the
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* License, or (at your option) any later version.
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*
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* gst-pulse is distributed in the hope that it will be useful, but
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* 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with gst-pulse; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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* USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/audio/audio.h>
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#include "pulseutil.h"
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#ifdef HAVE_UNISTD_H
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# include <unistd.h> /* getpid on UNIX */
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#endif
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#ifdef HAVE_PROCESS_H
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# include <process.h> /* getpid on win32 */
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#endif
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static const struct
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{
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GstAudioChannelPosition gst_pos;
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pa_channel_position_t pa_pos;
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} gst_pa_pos_table[] = {
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{
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GST_AUDIO_CHANNEL_POSITION_MONO, PA_CHANNEL_POSITION_MONO}, {
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GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_LEFT}, {
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GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT, PA_CHANNEL_POSITION_FRONT_RIGHT}, {
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GST_AUDIO_CHANNEL_POSITION_REAR_CENTER, PA_CHANNEL_POSITION_REAR_CENTER}, {
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GST_AUDIO_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_LEFT}, {
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GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT, PA_CHANNEL_POSITION_REAR_RIGHT}, {
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GST_AUDIO_CHANNEL_POSITION_LFE1, PA_CHANNEL_POSITION_LFE}, {
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GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_FRONT_CENTER}, {
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GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
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PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER}, {
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GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
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PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER}, {
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GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_LEFT}, {
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GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT, PA_CHANNEL_POSITION_SIDE_RIGHT}, {
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GST_AUDIO_CHANNEL_POSITION_TOP_CENTER, PA_CHANNEL_POSITION_TOP_CENTER}, {
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GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_LEFT,
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PA_CHANNEL_POSITION_TOP_FRONT_LEFT}, {
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GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_RIGHT,
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PA_CHANNEL_POSITION_TOP_FRONT_RIGHT}, {
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GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_CENTER,
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PA_CHANNEL_POSITION_TOP_FRONT_CENTER}, {
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GST_AUDIO_CHANNEL_POSITION_TOP_REAR_LEFT, PA_CHANNEL_POSITION_TOP_REAR_LEFT}, {
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GST_AUDIO_CHANNEL_POSITION_TOP_REAR_RIGHT,
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PA_CHANNEL_POSITION_TOP_REAR_RIGHT}, {
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GST_AUDIO_CHANNEL_POSITION_TOP_REAR_CENTER,
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PA_CHANNEL_POSITION_TOP_REAR_CENTER}, {
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GST_AUDIO_CHANNEL_POSITION_NONE, PA_CHANNEL_POSITION_INVALID}
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};
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static gboolean
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gstaudioformat_to_pasampleformat (GstAudioFormat format,
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pa_sample_format_t * sf)
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{
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switch (format) {
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case GST_AUDIO_FORMAT_U8:
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*sf = PA_SAMPLE_U8;
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break;
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case GST_AUDIO_FORMAT_S16LE:
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*sf = PA_SAMPLE_S16LE;
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break;
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case GST_AUDIO_FORMAT_S16BE:
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*sf = PA_SAMPLE_S16BE;
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break;
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case GST_AUDIO_FORMAT_F32LE:
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*sf = PA_SAMPLE_FLOAT32LE;
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break;
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case GST_AUDIO_FORMAT_F32BE:
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*sf = PA_SAMPLE_FLOAT32BE;
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break;
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case GST_AUDIO_FORMAT_S32LE:
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*sf = PA_SAMPLE_S32LE;
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break;
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case GST_AUDIO_FORMAT_S32BE:
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*sf = PA_SAMPLE_S32BE;
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break;
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case GST_AUDIO_FORMAT_S24LE:
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*sf = PA_SAMPLE_S24LE;
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break;
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case GST_AUDIO_FORMAT_S24BE:
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*sf = PA_SAMPLE_S24BE;
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break;
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case GST_AUDIO_FORMAT_S24_32LE:
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*sf = PA_SAMPLE_S24_32LE;
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break;
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case GST_AUDIO_FORMAT_S24_32BE:
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*sf = PA_SAMPLE_S24_32BE;
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break;
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default:
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return FALSE;
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}
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return TRUE;
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}
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gboolean
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gst_pulse_fill_sample_spec (GstAudioRingBufferSpec * spec, pa_sample_spec * ss)
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{
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if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_RAW) {
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if (!gstaudioformat_to_pasampleformat (GST_AUDIO_INFO_FORMAT (&spec->info),
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&ss->format))
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return FALSE;
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} else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_MU_LAW) {
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ss->format = PA_SAMPLE_ULAW;
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} else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_A_LAW) {
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ss->format = PA_SAMPLE_ALAW;
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} else
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return FALSE;
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ss->channels = GST_AUDIO_INFO_CHANNELS (&spec->info);
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ss->rate = GST_AUDIO_INFO_RATE (&spec->info);
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if (!pa_sample_spec_valid (ss))
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return FALSE;
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return TRUE;
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}
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gboolean
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gst_pulse_fill_format_info (GstAudioRingBufferSpec * spec, pa_format_info ** f,
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guint * channels)
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{
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pa_format_info *format;
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pa_sample_format_t sf = PA_SAMPLE_INVALID;
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GstAudioInfo *ainfo = &spec->info;
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format = pa_format_info_new ();
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if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_MU_LAW) {
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format->encoding = PA_ENCODING_PCM;
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sf = PA_SAMPLE_ULAW;
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} else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_A_LAW) {
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format->encoding = PA_ENCODING_PCM;
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sf = PA_SAMPLE_ALAW;
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} else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_RAW) {
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format->encoding = PA_ENCODING_PCM;
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if (!gstaudioformat_to_pasampleformat (GST_AUDIO_INFO_FORMAT (ainfo), &sf))
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goto fail;
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} else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_AC3) {
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format->encoding = PA_ENCODING_AC3_IEC61937;
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} else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_EAC3) {
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format->encoding = PA_ENCODING_EAC3_IEC61937;
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} else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_DTS) {
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format->encoding = PA_ENCODING_DTS_IEC61937;
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} else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_MPEG) {
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format->encoding = PA_ENCODING_MPEG_IEC61937;
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} else {
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goto fail;
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}
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if (format->encoding == PA_ENCODING_PCM) {
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pa_format_info_set_sample_format (format, sf);
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pa_format_info_set_channels (format, GST_AUDIO_INFO_CHANNELS (ainfo));
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}
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pa_format_info_set_rate (format, GST_AUDIO_INFO_RATE (ainfo));
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if (!pa_format_info_valid (format))
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goto fail;
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*f = format;
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*channels = GST_AUDIO_INFO_CHANNELS (ainfo);
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return TRUE;
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fail:
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if (format)
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pa_format_info_free (format);
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return FALSE;
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}
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const char *
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gst_pulse_sample_format_to_caps_format (pa_sample_format_t sf)
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{
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switch (sf) {
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case PA_SAMPLE_U8:
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return "U8";
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case PA_SAMPLE_S16LE:
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return "S16LE";
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case PA_SAMPLE_S16BE:
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return "S16BE";
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case PA_SAMPLE_FLOAT32LE:
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return "F32LE";
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case PA_SAMPLE_FLOAT32BE:
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return "F32BE";
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case PA_SAMPLE_S32LE:
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return "S32LE";
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case PA_SAMPLE_S32BE:
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return "S32BE";
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case PA_SAMPLE_S24LE:
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return "S24LE";
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case PA_SAMPLE_S24BE:
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return "S24BE";
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case PA_SAMPLE_S24_32LE:
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return "S24_32LE";
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case PA_SAMPLE_S24_32BE:
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return "S24_32BE";
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default:
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return NULL;
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}
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}
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/* PATH_MAX is not defined everywhere, e.g. on GNU Hurd */
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#ifndef PATH_MAX
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#define PATH_MAX 4096
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#endif
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gchar *
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gst_pulse_client_name (void)
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{
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gchar buf[PATH_MAX];
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const char *c;
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if ((c = g_get_application_name ()))
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return g_strdup (c);
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else if (pa_get_binary_name (buf, sizeof (buf)))
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return g_strdup (buf);
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else
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return g_strdup_printf ("GStreamer-pid-%lu", (gulong) getpid ());
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}
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pa_channel_map *
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gst_pulse_gst_to_channel_map (pa_channel_map * map,
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const GstAudioRingBufferSpec * spec)
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{
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gint i, j;
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gint channels;
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const GstAudioChannelPosition *pos;
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pa_channel_map_init (map);
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channels = GST_AUDIO_INFO_CHANNELS (&spec->info);
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pos = spec->info.position;
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for (j = 0; j < channels; j++) {
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for (i = 0; i < G_N_ELEMENTS (gst_pa_pos_table); i++) {
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if (pos[j] == gst_pa_pos_table[i].gst_pos) {
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map->map[j] = gst_pa_pos_table[i].pa_pos;
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break;
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}
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}
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if (i == G_N_ELEMENTS (gst_pa_pos_table))
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return NULL;
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}
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if (j != spec->info.channels) {
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return NULL;
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}
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map->channels = spec->info.channels;
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if (!pa_channel_map_valid (map)) {
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return NULL;
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}
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return map;
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}
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GstAudioRingBufferSpec *
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gst_pulse_channel_map_to_gst (const pa_channel_map * map,
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GstAudioRingBufferSpec * spec)
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{
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gint i, j;
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gboolean invalid = FALSE;
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gint channels;
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GstAudioChannelPosition *pos;
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channels = GST_AUDIO_INFO_CHANNELS (&spec->info);
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g_return_val_if_fail (map->channels == channels, NULL);
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pos = spec->info.position;
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for (j = 0; j < channels; j++) {
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for (i = 0; j < channels && i < G_N_ELEMENTS (gst_pa_pos_table); i++) {
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if (map->map[j] == gst_pa_pos_table[i].pa_pos) {
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pos[j] = gst_pa_pos_table[i].gst_pos;
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break;
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}
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}
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if (i == G_N_ELEMENTS (gst_pa_pos_table))
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return NULL;
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}
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if (!invalid
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&& !gst_audio_check_valid_channel_positions (pos, channels, FALSE))
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invalid = TRUE;
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if (invalid) {
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for (i = 0; i < channels; i++)
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pos[i] = GST_AUDIO_CHANNEL_POSITION_NONE;
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} else {
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if (pos[0] != GST_AUDIO_CHANNEL_POSITION_NONE)
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spec->info.flags &= ~GST_AUDIO_FLAG_UNPOSITIONED;
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}
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return spec;
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}
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void
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gst_pulse_cvolume_from_linear (pa_cvolume * v, unsigned channels,
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gdouble volume)
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{
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pa_cvolume_set (v, channels, pa_sw_volume_from_linear (volume));
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}
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static gboolean
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make_proplist_item (GQuark field_id, const GValue * value, gpointer user_data)
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{
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pa_proplist *p = (pa_proplist *) user_data;
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gchar *prop_id = (gchar *) g_quark_to_string (field_id);
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/* http://0pointer.de/lennart/projects/pulseaudio/doxygen/proplist_8h.html */
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/* match prop id */
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/* check type */
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switch (G_VALUE_TYPE (value)) {
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case G_TYPE_STRING:
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pa_proplist_sets (p, prop_id, g_value_get_string (value));
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break;
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default:
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GST_WARNING ("unmapped property type %s", G_VALUE_TYPE_NAME (value));
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break;
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}
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return TRUE;
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}
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pa_proplist *
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gst_pulse_make_proplist (const GstStructure * properties)
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{
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pa_proplist *proplist = pa_proplist_new ();
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/* iterate the structure and fill the proplist */
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gst_structure_foreach (properties, make_proplist_item, proplist);
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return proplist;
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}
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