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403 results
Show changes
Commits on Source (3)
......@@ -38,6 +38,7 @@ rtpparse_LTLIBRARIES = \
librtp_pcm_plugin.la \
librtp_raw_plugin.la \
librtp_h264_plugin.la \
librtp_opus_plugin.la \
librtp_xiph_plugin.la
librtp_ac3_plugin_la_SOURCES = access/rtp/ac3.c
......@@ -50,4 +51,6 @@ librtp_raw_plugin_la_SOURCES = access/rtp/raw.c
librtp_h264_plugin_la_SOURCES = access/rtp/h264.c
librtp_opus_plugin_la_SOURCES = access/rtp/opus.c
librtp_xiph_plugin_la_SOURCES = access/rtp/xiph.c
/**
* @file opus.c
* @brief Real-Time Protocol Opus payload format parser
*/
/*****************************************************************************
* Copyright © 2022 VideoLabs, Videolan and VLC Authors
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
****************************************************************************/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <assert.h>
#include <vlc_common.h>
#include <vlc_block.h>
#include <vlc_es.h>
#include <vlc_plugin.h>
#include <vlc_strings.h>
#include "rtp.h"
static void *rtp_opus_init(struct vlc_rtp_pt *pt)
{
VLC_UNUSED(pt);
es_format_t fmt;
es_format_Init(&fmt, AUDIO_ES, VLC_CODEC_OPUS);
static const uint8_t header[] = { 'O', 'p', 'u', 's', 'H', 'e', 'a', 'd',
0x01, 0x02, /* version / 2 channels */
0x00, 0x00, /* preskip */
0x80, 0xbb, 0x00, 0x00, /* rate 48000 */
0x00, 0x00, 0x00 }; /* gain / mapping */
fmt.p_extra = malloc(sizeof(header));
if(!fmt.p_extra)
return NULL;
fmt.i_extra = sizeof(header);
memcpy(fmt.p_extra, header, sizeof(header));
struct vlc_rtp_es *es = vlc_rtp_pt_request_es(pt, &fmt);
es_format_Clean(&fmt);
return es;
}
static void rtp_opus_destroy(struct vlc_rtp_pt *pt, void *data)
{
VLC_UNUSED(pt);
struct vlc_rtp_es *es = data;
vlc_rtp_es_destroy(es);
}
static void rtp_opus_decode(struct vlc_rtp_pt *pt, void *data, block_t *block,
const struct vlc_rtp_pktinfo *restrict info)
{
VLC_UNUSED(pt); VLC_UNUSED(info);
struct vlc_rtp_es *es = data;
if (block->i_buffer == 0)
{
block_Release(block);
return;
}
vlc_rtp_es_send(es, block);
}
static const struct vlc_rtp_pt_operations rtp_opus_ops = {
NULL, rtp_opus_init, rtp_opus_destroy, rtp_opus_decode,
};
static int rtp_opus_open(vlc_object_t *obj, struct vlc_rtp_pt *pt,
const struct vlc_sdp_pt *desc)
{
VLC_UNUSED(obj);
if (vlc_ascii_strcasecmp(desc->name, "OPUS") ||
desc->clock_rate != 48000 ||
desc->channel_count != 2)
return VLC_ENOTSUP;
pt->ops = &rtp_opus_ops;
return VLC_SUCCESS;
}
vlc_module_begin()
set_shortname(N_("RTP Opus"))
set_description(N_("RTP Opus audio payload parser"))
set_subcategory(SUBCAT_INPUT_DEMUX)
set_rtp_parser_callback(rtp_opus_open)
add_shortcut("audio/opus")
vlc_module_end()
......@@ -357,40 +357,50 @@ static int ProcessHeaders( decoder_t *p_dec )
const uint8_t *p_extra = p_dec->fmt_in.p_extra;
uint8_t *p_alloc = NULL;
/* Xiph headers as extradata */
if( i_extra > 21 && !memcmp( &p_extra[2], "OpusHead", 8 ) )
{
if( xiph_SplitHeaders( pi_size, pp_data, &i_count,
i_extra, p_extra ) || i_count < 2 )
{
/* Borked Xiph headers */
free( p_alloc );
return VLC_EGENERIC;
}
oggpacket.bytes = pi_size[0];
oggpacket.packet = (unsigned char *) pp_data[0];
}
/* If we have no header (e.g. from RTP), make one. */
if( !i_extra ||
(i_extra > 10 && memcmp( &p_extra[2], "OpusHead", 8 )) ) /* Borked muxers */
else if( i_extra < 19 || memcmp( p_extra, "OpusHead", 8 ) )
{
OpusHeader header;
opus_header_init(&header);
opus_prepare_header( p_dec->fmt_in.audio.i_channels,
p_dec->fmt_in.audio.i_rate, &header );
opus_prepare_header( p_dec->fmt_in.audio.i_channels ? p_dec->fmt_in.audio.i_channels : 2,
p_dec->fmt_in.audio.i_rate ? p_dec->fmt_in.audio.i_rate : 48000,
&header );
int ret = opus_write_header( &p_alloc, &i_extra, &header,
opus_get_version_string() );
opus_header_clean(&header);
if(ret != 0)
if(ret != 0 || i_extra < 21)
{
free( p_alloc );
return VLC_ENOMEM;
}
p_extra = p_alloc;
oggpacket.bytes = p_alloc[1]; /* Xiph header is type8/size8 */
oggpacket.packet = (unsigned char *) p_alloc + 2; /* Point directly to opus header start */
}
if( xiph_SplitHeaders( pi_size, pp_data, &i_count,
i_extra, p_extra ) || i_count < 2 )
else /* raw header in extradata */
{
free( p_alloc );
return VLC_EGENERIC;
oggpacket.bytes = i_extra;
oggpacket.packet = (unsigned char *) p_extra;
}
/* Take care of the initial Opus header */
oggpacket.granulepos = -1;
oggpacket.e_o_s = 0;
oggpacket.packetno = 0;
/* Take care of the initial Opus header */
oggpacket.b_o_s = 1; /* yes this actually is a b_o_s packet :) */
oggpacket.bytes = pi_size[0];
oggpacket.packet = (void *)pp_data[0];
int ret = ProcessInitialHeader( p_dec, &oggpacket );
if (ret != VLC_SUCCESS)
......