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https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
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74f8456acb
This adds a GStreamer-based RTP implementation to replace our own. The original implementation is retained for cases where it is not possible to include GStreamer as a dependency. The idea with this is to be able to start supporting more advanced RTP features such as RTCP, non-PCM audio, and potentially synchronised playback. Signed-off-by: Arun Raghavan <arun@arunraghavan.net>
97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
/***
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This file is part of PulseAudio.
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Copyright 2006 Lennart Poettering
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PulseAudio 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 published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio 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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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
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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 "rtp.h"
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#include <pulsecore/core-util.h>
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uint8_t pa_rtp_payload_from_sample_spec(const pa_sample_spec *ss) {
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pa_assert(ss);
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if (ss->format == PA_SAMPLE_S16BE && ss->rate == 44100 && ss->channels == 2)
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return 10;
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if (ss->format == PA_SAMPLE_S16BE && ss->rate == 44100 && ss->channels == 1)
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return 11;
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return 127;
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}
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pa_sample_spec *pa_rtp_sample_spec_from_payload(uint8_t payload, pa_sample_spec *ss) {
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pa_assert(ss);
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switch (payload) {
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case 10:
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ss->channels = 2;
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ss->format = PA_SAMPLE_S16BE;
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ss->rate = 44100;
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break;
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case 11:
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ss->channels = 1;
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ss->format = PA_SAMPLE_S16BE;
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ss->rate = 44100;
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break;
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default:
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return NULL;
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}
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return ss;
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}
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pa_sample_spec *pa_rtp_sample_spec_fixup(pa_sample_spec * ss) {
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pa_assert(ss);
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if (!pa_rtp_sample_spec_valid(ss))
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ss->format = PA_SAMPLE_S16BE;
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pa_assert(pa_rtp_sample_spec_valid(ss));
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return ss;
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}
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int pa_rtp_sample_spec_valid(const pa_sample_spec *ss) {
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pa_assert(ss);
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if (!pa_sample_spec_valid(ss))
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return 0;
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return ss->format == PA_SAMPLE_S16BE;
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}
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const char* pa_rtp_format_to_string(pa_sample_format_t f) {
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switch (f) {
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case PA_SAMPLE_S16BE:
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return "L16";
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default:
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return NULL;
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}
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}
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pa_sample_format_t pa_rtp_string_to_format(const char *s) {
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pa_assert(s);
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if (pa_streq(s, "L16"))
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return PA_SAMPLE_S16BE;
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else
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return PA_SAMPLE_INVALID;
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}
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