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vlc/modules/mux/ogg.c
Alexandre Janniaux 6b7a57f984 modules: fix typos 
Typos found and reworked from codespell.
2022-01-08 15:19:32 +00:00

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/*****************************************************************************
* ogg.c: ogg muxer module for vlc
*****************************************************************************
* Copyright (C) 2001, 2002, 2006 VLC authors and VideoLAN
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Gildas Bazin <gbazin@videolan.org>
*
* This program 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 program 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 program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_sout.h>
#include <vlc_block.h>
#include <vlc_codecs.h>
#include <limits.h>
#include <vlc_rand.h>
#include "../demux/xiph.h"
#include <ogg/ogg.h>
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define INDEXINTVL_TEXT N_("Index interval")
#define INDEXINTVL_LONGTEXT N_("Minimal index interval, in milliseconds. " \
"Set to 0 to disable index creation.")
#define INDEXRATIO_TEXT N_("Index size ratio")
#define INDEXRATIO_LONGTEXT N_(\
"Set index size ratio. Alters default (60min content) or estimated size." )
static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
#define SOUT_CFG_PREFIX "sout-ogg-"
vlc_module_begin ()
set_description( N_("Ogg/OGM muxer") )
set_capability( "sout mux", 10 )
set_subcategory( SUBCAT_SOUT_MUX )
add_shortcut( "ogg", "ogm" )
add_integer_with_range( SOUT_CFG_PREFIX "indexintvl", 1000, 0, INT_MAX,
INDEXINTVL_TEXT, INDEXINTVL_LONGTEXT )
add_float_with_range( SOUT_CFG_PREFIX "indexratio", 1.0, 1.0, 1000,
INDEXRATIO_TEXT, INDEXRATIO_LONGTEXT )
set_callbacks( Open, Close )
vlc_module_end ()
/*****************************************************************************
* Exported prototypes
*****************************************************************************/
static int Control ( sout_mux_t *, int, va_list );
static int AddStream( sout_mux_t *, sout_input_t * );
static void DelStream( sout_mux_t *, sout_input_t * );
static int Mux ( sout_mux_t * );
static int MuxBlock ( sout_mux_t *, sout_input_t * );
static bool OggCreateHeaders( sout_mux_t * );
static void OggFillSkeletonFishead( uint8_t *p_buffer, sout_mux_t *p_mux );
/*****************************************************************************
* Misc declarations
*****************************************************************************/
/* Skeleton */
#define FISBONE_BASE_SIZE 52
#define FISBONE_BASE_OFFSET 44
#define INDEX_BASE_SIZE 42
/* Structures used for OggDS headers used in ogm files */
#define PACKET_TYPE_HEADER 0x01
#define PACKET_TYPE_COMMENT 0x03
#define PACKET_IS_SYNCPOINT 0x08
typedef struct
{
int32_t i_width;
int32_t i_height;
} oggds_header_video_t;
typedef struct
{
int16_t i_channels;
int16_t i_block_align;
int32_t i_avgbytespersec;
} oggds_header_audio_t;
typedef struct
{
uint8_t i_packet_type;
char stream_type[8];
char sub_type[4];
int32_t i_size;
int64_t i_time_unit;
int64_t i_samples_per_unit;
int32_t i_default_len;
int32_t i_buffer_size;
int16_t i_bits_per_sample;
int16_t i_padding_0; /* Because the original is using MSVC packing style */
union
{
oggds_header_video_t video;
oggds_header_audio_t audio;
} header;
int32_t i_padding_1; /* Because the original is using MSVC packing style */
} oggds_header_t;
/*****************************************************************************
* Definitions of structures and functions used by this plugins
*****************************************************************************/
typedef struct
{
es_format_t fmt;
int b_new;
vlc_tick_t i_dts;
vlc_tick_t i_length;
int i_packet_no;
int i_serial_no;
int i_keyframe_granule_shift; /* Theora and Daala only */
int i_last_keyframe; /* dirac and theora */
int i_num_frames; /* Theora only */
uint64_t u_last_granulepos; /* Used for correct EOS page */
int64_t i_num_keyframes;
ogg_stream_state os;
oggds_header_t *p_oggds_header;
bool b_started;
bool b_finished;
struct
{
bool b_fisbone_done;
bool b_index_done;
/* Skeleton index storage */
unsigned char *p_index;
uint64_t i_index_size;
uint64_t i_index_payload; /* real index size */
uint64_t i_index_count;
/* backup values for rewriting index page later */
uint64_t i_index_offset; /* sout offset of the index page */
int64_t i_index_packetno; /* index packet no */
int i_index_pageno;
/* index creation tracking values */
uint64_t i_last_keyframe_pos;
vlc_tick_t i_last_keyframe_time;
} skeleton;
int i_dirac_last_pt;
int i_dirac_last_dt;
vlc_tick_t i_baseptsdelay;
} ogg_stream_t;
typedef struct
{
int i_streams;
vlc_tick_t i_start_dts;
int i_next_serial_no;
/* number of logical streams pending to be added */
int i_add_streams;
bool b_can_add_streams;
/* logical streams pending to be deleted */
int i_del_streams;
ogg_stream_t **pp_del_streams;
/* Skeleton */
struct
{
bool b_create;
int i_serial_no;
int i_packet_no;
ogg_stream_state os;
bool b_head_done;
/* backup values for rewriting fishead page later */
uint64_t i_fishead_offset; /* sout offset of the fishead page */
vlc_tick_t i_index_intvl;
float i_index_ratio;
} skeleton;
/* access position */
ssize_t i_pos;
ssize_t i_data_start;
ssize_t i_segment_start;
} sout_mux_sys_t;
static void OggSetDate( block_t *, vlc_tick_t , vlc_tick_t );
static block_t *OggStreamFlush( sout_mux_t *, ogg_stream_state *, vlc_tick_t );
static void OggCreateStreamFooter( sout_mux_t *p_mux, ogg_stream_t *p_stream );
static void OggRewriteFisheadPage( sout_mux_t *p_mux );
static bool AllocateIndex( sout_mux_t *p_mux, sout_input_t *p_input );
/*****************************************************************************
* Open: Open muxer
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
sout_mux_t *p_mux = (sout_mux_t*)p_this;
sout_mux_sys_t *p_sys;
msg_Info( p_mux, "Open" );
p_sys = malloc( sizeof( sout_mux_sys_t ) );
if( !p_sys )
return VLC_ENOMEM;
p_sys->i_streams = 0;
p_sys->i_add_streams = 0;
p_sys->b_can_add_streams = true;
p_sys->i_del_streams = 0;
p_sys->pp_del_streams = 0;
p_sys->i_pos = 0;
p_sys->skeleton.b_create = false;
p_sys->skeleton.b_head_done = false;
p_sys->skeleton.i_index_intvl =
VLC_TICK_FROM_MS(var_InheritInteger( p_this, SOUT_CFG_PREFIX "indexintvl" ));
p_sys->skeleton.i_index_ratio =
var_InheritFloat( p_this, SOUT_CFG_PREFIX "indexratio" );
p_sys->i_data_start = 0;
p_sys->i_segment_start = 0;
p_mux->p_sys = p_sys;
p_mux->pf_control = Control;
p_mux->pf_addstream = AddStream;
p_mux->pf_delstream = DelStream;
p_mux->pf_mux = Mux;
/* First serial number is random.
* (Done like this because on win32 you need to seed the random number
* generator once per thread). */
uint32_t r;
vlc_rand_bytes(&r, sizeof(r));
p_sys->i_next_serial_no = r & INT_MAX;
return VLC_SUCCESS;
}
/*****************************************************************************
* Close: Finalize ogg bitstream and close muxer
*****************************************************************************/
static void Close( vlc_object_t * p_this )
{
sout_mux_t *p_mux = (sout_mux_t*)p_this;
sout_mux_sys_t *p_sys = p_mux->p_sys;
msg_Info( p_mux, "Close" );
if( p_sys->i_del_streams )
{
/* Close the current ogg stream */
msg_Dbg( p_mux, "writing footers" );
/* Remove deleted logical streams */
for(int i = 0; i < p_sys->i_del_streams; i++ )
{
ogg_stream_t *p_stream = p_sys->pp_del_streams[i];
es_format_Clean( &p_stream->fmt );
OggCreateStreamFooter( p_mux, p_stream );
free( p_stream->p_oggds_header );
free( p_stream->skeleton.p_index );
free( p_stream );
}
free( p_sys->pp_del_streams );
p_sys->i_streams -= p_sys->i_del_streams;
}
/* rewrite fishead with final values */
if ( p_sys->skeleton.b_create && p_sys->skeleton.b_head_done )
{
OggRewriteFisheadPage( p_mux );
}
free( p_sys );
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( sout_mux_t *p_mux, int i_query, va_list args )
{
VLC_UNUSED(p_mux);
bool *pb_bool;
char **ppsz;
switch( i_query )
{
case MUX_CAN_ADD_STREAM_WHILE_MUXING:
pb_bool = va_arg( args, bool * );
*pb_bool = true;
return VLC_SUCCESS;
case MUX_GET_MIME:
ppsz = va_arg( args, char ** );
*ppsz = strdup( "application/ogg" );
return VLC_SUCCESS;
default:
return VLC_EGENERIC;
}
}
/*****************************************************************************
* AddStream: Add an elementary stream to the muxed stream
*****************************************************************************/
static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
ogg_stream_t *p_stream;
uint16_t i_tag;
msg_Dbg( p_mux, "adding input" );
p_input->p_sys = p_stream = calloc( 1, sizeof( ogg_stream_t ) );
if( !p_stream )
return VLC_ENOMEM;
if( es_format_Copy( &p_stream->fmt, &p_input->fmt ) != VLC_SUCCESS )
{
free( p_stream );
return VLC_ENOMEM;
}
p_stream->i_serial_no = p_sys->i_next_serial_no++;
p_stream->i_packet_no = 0;
p_stream->i_last_keyframe = 0;
p_stream->i_num_keyframes = 0;
p_stream->i_num_frames = 0;
p_stream->p_oggds_header = 0;
p_stream->i_baseptsdelay = -1;
p_stream->i_dirac_last_pt = -1;
p_stream->i_dirac_last_dt = -1;
switch( p_input->p_fmt->i_cat )
{
case VIDEO_ES:
{
if( !p_stream->fmt.video.i_frame_rate ||
!p_stream->fmt.video.i_frame_rate_base )
{
msg_Warn( p_mux, "Missing frame rate, assuming 25fps" );
p_stream->fmt.video.i_frame_rate = 25;
p_stream->fmt.video.i_frame_rate_base = 1;
}
switch( p_stream->fmt.i_codec )
{
case VLC_CODEC_MP4V:
case VLC_CODEC_MPGV:
case VLC_CODEC_MP1V:
case VLC_CODEC_MP2V:
case VLC_CODEC_DIV3:
case VLC_CODEC_MJPG:
case VLC_CODEC_WMV1:
case VLC_CODEC_WMV2:
case VLC_CODEC_WMV3:
p_stream->p_oggds_header = calloc( 1, sizeof(oggds_header_t) );
if( !p_stream->p_oggds_header )
{
free( p_stream );
return VLC_ENOMEM;
}
p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
memcpy( p_stream->p_oggds_header->stream_type, "video", 5 );
if( p_stream->fmt.i_codec == VLC_CODEC_MP4V )
{
memcpy( p_stream->p_oggds_header->sub_type, "XVID", 4 );
}
else if( p_stream->fmt.i_codec == VLC_CODEC_DIV3 )
{
memcpy( p_stream->p_oggds_header->sub_type, "DIV3", 4 );
}
else
{
memcpy( p_stream->p_oggds_header->sub_type,
&p_stream->fmt.i_codec, 4 );
}
p_stream->p_oggds_header->i_size = 0 ;
p_stream->p_oggds_header->i_time_unit =
MSFTIME_FROM_SEC(1) * p_stream->fmt.video.i_frame_rate_base /
(int64_t)p_stream->fmt.video.i_frame_rate;
p_stream->p_oggds_header->i_samples_per_unit = 1;
p_stream->p_oggds_header->i_default_len = 1 ; /* ??? */
p_stream->p_oggds_header->i_buffer_size = 1024*1024;
p_stream->p_oggds_header->i_bits_per_sample = 0;
p_stream->p_oggds_header->header.video.i_width = p_input->p_fmt->video.i_width;
p_stream->p_oggds_header->header.video.i_height = p_input->p_fmt->video.i_height;
msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->fmt.i_codec );
break;
case VLC_CODEC_DIRAC:
msg_Dbg( p_mux, "dirac stream" );
break;
case VLC_CODEC_THEORA:
msg_Dbg( p_mux, "theora stream" );
break;
case VLC_CODEC_DAALA:
msg_Dbg( p_mux, "daala stream" );
break;
case VLC_CODEC_VP8:
msg_Dbg( p_mux, "VP8 stream" );
break;
default:
FREENULL( p_input->p_sys );
return VLC_EGENERIC;
}
}
break;
case AUDIO_ES:
switch( p_stream->fmt.i_codec )
{
case VLC_CODEC_OPUS:
msg_Dbg( p_mux, "opus stream" );
break;
case VLC_CODEC_VORBIS:
msg_Dbg( p_mux, "vorbis stream" );
break;
case VLC_CODEC_SPEEX:
msg_Dbg( p_mux, "speex stream" );
break;
case VLC_CODEC_FLAC:
msg_Dbg( p_mux, "flac stream" );
break;
default:
fourcc_to_wf_tag( p_stream->fmt.i_codec, &i_tag );
if( i_tag == WAVE_FORMAT_UNKNOWN )
{
FREENULL( p_input->p_sys );
return VLC_EGENERIC;
}
p_stream->p_oggds_header =
malloc( sizeof(oggds_header_t) + p_input->p_fmt->i_extra );
if( !p_stream->p_oggds_header )
{
free( p_stream );
return VLC_ENOMEM;
}
memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
p_stream->p_oggds_header->i_size = p_input->p_fmt->i_extra;
if( p_input->p_fmt->i_extra )
{
memcpy( &p_stream->p_oggds_header[1],
p_input->p_fmt->p_extra, p_input->p_fmt->i_extra );
}
memcpy( p_stream->p_oggds_header->stream_type, "audio", 5 );
char buf[5];
memset( buf, 0, sizeof(buf) );
snprintf( buf, sizeof(buf), "%"PRIx16, i_tag );
memcpy( p_stream->p_oggds_header->sub_type, buf, 4 );
p_stream->p_oggds_header->i_time_unit = MSFTIME_FROM_SEC(1);
p_stream->p_oggds_header->i_default_len = 1;
p_stream->p_oggds_header->i_buffer_size = 30*1024 ;
p_stream->p_oggds_header->i_samples_per_unit = p_input->p_fmt->audio.i_rate;
p_stream->p_oggds_header->i_bits_per_sample = p_input->p_fmt->audio.i_bitspersample;
p_stream->p_oggds_header->header.audio.i_channels = p_input->p_fmt->audio.i_channels;
p_stream->p_oggds_header->header.audio.i_block_align = p_input->p_fmt->audio.i_blockalign;
p_stream->p_oggds_header->header.audio.i_avgbytespersec = p_input->p_fmt->i_bitrate / 8;
msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->fmt.i_codec );
break;
}
break;
case SPU_ES:
switch( p_stream->fmt.i_codec )
{
case VLC_CODEC_SUBT:
p_stream->p_oggds_header = calloc( 1, sizeof(oggds_header_t) );
if( !p_stream->p_oggds_header )
{
free( p_stream );
return VLC_ENOMEM;
}
p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
memcpy( p_stream->p_oggds_header->stream_type, "text", 4 );
msg_Dbg( p_mux, "subtitles stream" );
break;
default:
FREENULL( p_input->p_sys );
return VLC_EGENERIC;
}
break;
default:
FREENULL( p_input->p_sys );
return VLC_EGENERIC;
}
p_stream->b_new = true;
p_sys->i_add_streams++;
return VLC_SUCCESS;
}
/*****************************************************************************
* DelStream: Delete an elementary stream from the muxed stream
*****************************************************************************/
static void DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
block_t *p_og;
msg_Dbg( p_mux, "removing input" );
/* flush all remaining data */
if( p_input->p_sys )
{
if( !p_stream->b_new )
{
while( block_FifoCount( p_input->p_fifo ) )
MuxBlock( p_mux, p_input );
}
if( !p_stream->b_new &&
( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
{
OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
p_sys->i_pos += sout_AccessOutWrite( p_mux->p_access, p_og );
}
/* move input in delete queue */
if( !p_stream->b_new )
{
p_sys->pp_del_streams = xrealloc( p_sys->pp_del_streams,
(p_sys->i_del_streams + 1) * sizeof(ogg_stream_t *) );
p_sys->pp_del_streams[p_sys->i_del_streams++] = p_stream;
}
else
{
/* wasn't already added so get rid of it */
FREENULL( p_stream->p_oggds_header );
FREENULL( p_stream );
p_sys->i_add_streams--;
}
}
p_input->p_sys = NULL;
}
/*****************************************************************************
* Ogg Skeleton helpers
*****************************************************************************/
static int WriteQWVariableLE( uint64_t i_64, uint64_t i_offset,
uint8_t *p_buffer, int i_buffer_size )
{
uint8_t *p_dest = p_buffer + i_offset;
int i_written = 0;
for(;;)
{
if ( p_dest - p_buffer >= i_buffer_size ) return -1;
*p_dest = (uint8_t) ( i_64 & 0x7F );
i_64 >>= 7;
i_written++;
if ( i_64 == 0 )
{
*p_dest |= 0x80;
return i_written;
}
p_dest++;
}
}
static bool AddIndexEntry( sout_mux_t *p_mux, vlc_tick_t i_time, sout_input_t *p_input )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
ogg_stream_t *p_stream = (ogg_stream_t *) p_input->p_sys;
uint64_t i_posdelta;
vlc_tick_t i_timedelta;
if ( !p_sys->skeleton.b_create || p_sys->skeleton.i_index_intvl == 0
|| !p_stream->skeleton.p_index )
return false;
if ( p_stream->skeleton.i_last_keyframe_pos == 0 )
p_stream->skeleton.i_last_keyframe_pos = p_sys->i_segment_start;
i_posdelta = p_sys->i_pos - p_stream->skeleton.i_last_keyframe_pos;
i_timedelta = i_time - p_stream->skeleton.i_last_keyframe_time;
if ( i_timedelta <= p_sys->skeleton.i_index_intvl || i_posdelta <= 0xFFFF )
return false;
/* do inserts */
int i_ret;
if ( !p_stream->skeleton.p_index ) return false;
uint64_t i_offset = p_stream->skeleton.i_index_payload;
i_ret = WriteQWVariableLE( i_posdelta, i_offset, p_stream->skeleton.p_index,
p_stream->skeleton.i_index_size );
if ( i_ret == -1 ) return false;
i_offset += i_ret;
i_ret = WriteQWVariableLE( i_timedelta, i_offset, p_stream->skeleton.p_index,
p_stream->skeleton.i_index_size );
if ( i_ret == -1 ) return false;
p_stream->skeleton.i_index_payload = i_offset + i_ret;
p_stream->skeleton.i_index_count++;
/* update diff points */
p_stream->skeleton.i_last_keyframe_pos = p_sys->i_pos;
p_stream->skeleton.i_last_keyframe_time = i_time;
msg_Dbg( p_mux, "Added index on stream %d entry %zd %"PRIu64,
p_stream->i_serial_no, p_sys->i_pos - p_sys->i_segment_start, i_time );
return true;
}
/*****************************************************************************
* Ogg bitstream manipulation routines
*****************************************************************************/
static block_t *OggStreamGetPage( sout_mux_t *p_mux,
ogg_stream_state *p_os, vlc_tick_t i_pts,
bool flush )
{
(void)p_mux;
block_t *p_og, *p_og_first = NULL;
ogg_page og;
int (*pager)( ogg_stream_state*, ogg_page* ) = flush ? ogg_stream_flush : ogg_stream_pageout;
while( pager( p_os, &og ) )
{
/* Flush all data */
p_og = block_Alloc( og.header_len + og.body_len );
memcpy( p_og->p_buffer, og.header, og.header_len );
memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
p_og->i_dts = 0;
p_og->i_pts = i_pts;
p_og->i_length = 0;
i_pts = 0; // write it only once
block_ChainAppend( &p_og_first, p_og );
}
return p_og_first;
}
static block_t *OggStreamFlush( sout_mux_t *p_mux,
ogg_stream_state *p_os, vlc_tick_t i_pts )
{
return OggStreamGetPage( p_mux, p_os, i_pts, true );
}
static block_t *OggStreamPageOut( sout_mux_t *p_mux,
ogg_stream_state *p_os, vlc_tick_t i_pts )
{
return OggStreamGetPage( p_mux, p_os, i_pts, false );
}
static void OggGetSkeletonIndex( uint8_t **pp_buffer, long *pi_size, ogg_stream_t *p_stream )
{
uint8_t *p_buffer = calloc( INDEX_BASE_SIZE + p_stream->skeleton.i_index_size, sizeof(uint8_t) );
if ( !p_buffer ) return;
*pp_buffer = p_buffer;
memcpy( p_buffer, "index", 6 );
SetDWLE( &p_buffer[6], p_stream->i_serial_no );
SetQWLE( &p_buffer[10], p_stream->skeleton.i_index_count ); /* num keypoints */
SetQWLE( &p_buffer[18], CLOCK_FREQ );
SetQWLE( &p_buffer[34], p_stream->i_length );
memcpy( p_buffer + INDEX_BASE_SIZE, p_stream->skeleton.p_index, p_stream->skeleton.i_index_payload );
*pi_size = INDEX_BASE_SIZE + p_stream->skeleton.i_index_size;
}
static void OggGetSkeletonFisbone( uint8_t **pp_buffer, long *pi_size,
sout_input_t *p_input, sout_mux_t *p_mux )
{
uint8_t *psz_header;
uint8_t *p_buffer;
const char *psz_value = NULL;
ogg_stream_t *p_stream = (ogg_stream_t *) p_input->p_sys;
struct
{
char *psz_content_type;
char *psz_role;
long int i_size;
unsigned int i_count;
} headers = { NULL, NULL, 0, 0 };
*pi_size = 0;
switch( p_stream->fmt.i_codec )
{
case VLC_CODEC_VORBIS:
psz_value = "audio/vorbis";
break;
case VLC_CODEC_THEORA:
psz_value = "video/theora";
break;
case VLC_CODEC_DAALA:
psz_value = "video/daala";
break;
case VLC_CODEC_SPEEX:
psz_value = "audio/speex";
break;
case VLC_CODEC_FLAC:
psz_value = "audio/flac";
break;
case VLC_CODEC_CMML:
psz_value = "text/cmml";
break;
case VLC_CODEC_KATE:
psz_value = "application/kate";
break;
case VLC_CODEC_VP8:
psz_value = "video/x-vp8";
break;
default:
psz_value = "application/octet-stream";
msg_Warn( p_mux, "Unknown fourcc for stream %s, setting Content-Type to %s",
vlc_fourcc_GetDescription( p_stream->fmt.i_cat, p_stream->fmt.i_codec ),
psz_value );
}
/* Content Type Header */
if ( asprintf( &headers.psz_content_type, "Content-Type: %s\r\n", psz_value ) != -1 )
{
headers.i_size += strlen( headers.psz_content_type );
headers.i_count++;
}
/* Set Role Header */
if ( p_input->p_fmt->i_priority > ES_PRIORITY_NOT_SELECTABLE )
{
int i_max_prio = ES_PRIORITY_MIN;
for ( int i=0; i< p_mux->i_nb_inputs; i++ )
{
if ( p_mux->pp_inputs[i]->p_fmt->i_cat != p_input->p_fmt->i_cat ) continue;
i_max_prio = __MAX( p_mux->pp_inputs[i]->p_fmt->i_priority, i_max_prio );
}
psz_value = NULL;
if ( p_input->p_fmt->i_cat == AUDIO_ES || p_input->p_fmt->i_cat == VIDEO_ES )
{
if ( p_input->p_fmt->i_priority == i_max_prio && i_max_prio >= ES_PRIORITY_SELECTABLE_MIN )
psz_value = ( p_input->p_fmt->i_cat == VIDEO_ES ) ?
"video/main" : "audio/main";
else
psz_value = ( p_input->p_fmt->i_cat == VIDEO_ES ) ?
"video/alternate" : "audio/alternate";
}
else if ( p_input->p_fmt->i_cat == SPU_ES )
{
psz_value = ( p_input->p_fmt->i_codec == VLC_CODEC_KATE ) ?
"text/karaoke" : "text/subtitle";
}
if ( psz_value && asprintf( &headers.psz_role, "Role: %s\r\n", psz_value ) != -1 )
{
headers.i_size += strlen( headers.psz_role );
headers.i_count++;
}
}
*pp_buffer = calloc( FISBONE_BASE_SIZE + headers.i_size, sizeof(uint8_t) );
if ( !*pp_buffer ) return;
p_buffer = *pp_buffer;
memcpy( p_buffer, "fisbone", 8 );
SetDWLE( &p_buffer[8], FISBONE_BASE_OFFSET ); /* offset to message headers */
SetDWLE( &p_buffer[12], p_stream->i_serial_no );
SetDWLE( &p_buffer[16], headers.i_count );
/* granulerate den */
switch ( p_input->p_fmt->i_cat )
{
case VIDEO_ES:
SetQWLE( &(*pp_buffer)[20], p_stream->fmt.video.i_frame_rate );
SetQWLE( &(*pp_buffer)[28], p_stream->fmt.video.i_frame_rate_base );
break;
case AUDIO_ES:
SetQWLE( &(*pp_buffer)[20], p_input->p_fmt->audio.i_rate );
SetQWLE( &(*pp_buffer)[28], 1 );
break;
default:
SetQWLE( &(*pp_buffer)[20], 1000 );
SetQWLE( &(*pp_buffer)[28], 1 );
}
/* preroll */
if ( p_input->p_fmt->p_extra )
SetDWLE( &(*pp_buffer)[44],
xiph_CountUnknownHeaders( p_input->p_fmt->p_extra,
p_input->p_fmt->i_extra,
p_input->p_fmt->i_codec ) );
if ( headers.i_size > 0 )
{
psz_header = *pp_buffer + FISBONE_BASE_SIZE;
memcpy( psz_header, headers.psz_content_type, strlen( headers.psz_content_type ) );
psz_header += strlen( headers.psz_content_type );
if ( headers.psz_role )
memcpy( psz_header, headers.psz_role, strlen( headers.psz_role ) );
}
*pi_size = FISBONE_BASE_SIZE + headers.i_size;
free( headers.psz_content_type );
free( headers.psz_role );
}
static void OggFillSkeletonFishead( uint8_t *p_buffer, sout_mux_t *p_mux )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
memcpy( p_buffer, "fishead", 8 );
SetWLE( &p_buffer[8], 4 );
SetWLE( &p_buffer[10], 0 );
SetQWLE( &p_buffer[20], 1000 );
SetQWLE( &p_buffer[36], 1000 );
SetQWLE( &p_buffer[64], p_sys->i_pos - p_sys->i_segment_start ); /* segment length */
SetQWLE( &p_buffer[72], p_sys->i_data_start - p_sys->i_segment_start ); /* data start offset */
}
static int32_t OggFillDsHeader( uint8_t *p_buffer, oggds_header_t *p_oggds_header, int i_cat )
{
int index = 0;
p_buffer[index] = p_oggds_header->i_packet_type;
index++;
memcpy( &p_buffer[index], p_oggds_header->stream_type, sizeof(p_oggds_header->stream_type) );
index += sizeof(p_oggds_header->stream_type);
memcpy(&p_buffer[index], p_oggds_header->sub_type, sizeof(p_oggds_header->sub_type) );
index += sizeof(p_oggds_header->sub_type);
/* The size is filled at the end */
uint8_t *p_isize = &p_buffer[index];
index += 4;
SetQWLE( &p_buffer[index], p_oggds_header->i_time_unit );
index += 8;
SetQWLE( &p_buffer[index], p_oggds_header->i_samples_per_unit );
index += 8;
SetDWLE( &p_buffer[index], p_oggds_header->i_default_len );
index += 4;
SetDWLE( &p_buffer[index], p_oggds_header->i_buffer_size );
index += 4;
SetWLE( &p_buffer[index], p_oggds_header->i_bits_per_sample );
index += 2;
SetWLE( &p_buffer[index], p_oggds_header->i_padding_0 );
index += 2;
/* audio or video */
switch( i_cat )
{
case VIDEO_ES:
SetDWLE( &p_buffer[index], p_oggds_header->header.video.i_width );
SetDWLE( &p_buffer[index+4], p_oggds_header->header.video.i_height );
break;
case AUDIO_ES:
SetWLE( &p_buffer[index], p_oggds_header->header.audio.i_channels );
SetWLE( &p_buffer[index+2], p_oggds_header->header.audio.i_block_align );
SetDWLE( &p_buffer[index+4], p_oggds_header->header.audio.i_avgbytespersec );
break;
}
index += 8;
SetDWLE( &p_buffer[index], p_oggds_header->i_padding_1 );
index += 4;
/* extra header */
if( p_oggds_header->i_size > 0 )
{
memcpy( &p_buffer[index], (uint8_t *) p_oggds_header + sizeof(*p_oggds_header), p_oggds_header->i_size );
index += p_oggds_header->i_size;
}
SetDWLE( p_isize, index-1 );
return index;
}
static void OggFillVP8Header( uint8_t *p_buffer, sout_input_t *p_input )
{
ogg_stream_t *p_stream = (ogg_stream_t *) p_input->p_sys;
memcpy( p_buffer, "OVP80\x01\x01\x00", 8 );
SetWBE( &p_buffer[8], p_input->p_fmt->video.i_width );
SetDWBE( &p_buffer[14], p_input->p_fmt->video.i_sar_den );/* 24 bits, 15~ */
SetDWBE( &p_buffer[11], p_input->p_fmt->video.i_sar_num );/* 24 bits, 12~ */
SetWBE( &p_buffer[10], p_input->p_fmt->video.i_height );
SetDWBE( &p_buffer[18], p_stream->fmt.video.i_frame_rate );
SetDWBE( &p_buffer[22], p_stream->fmt.video.i_frame_rate_base );
}
static bool OggCreateHeaders( sout_mux_t *p_mux )
{
block_t *p_hdr = NULL;
block_t *p_og = NULL;
ogg_packet op;
sout_mux_sys_t *p_sys = p_mux->p_sys;
if( sout_AccessOutControl( p_mux->p_access,
ACCESS_OUT_CAN_SEEK,
&p_sys->skeleton.b_create ) )
{
p_sys->skeleton.b_create = false;
}
p_sys->skeleton.b_create &= !! p_mux->i_nb_inputs;
/* no skeleton for solo vorbis/speex/opus tracks */
if ( p_mux->i_nb_inputs == 1 && p_mux->pp_inputs[0]->p_fmt->i_cat == AUDIO_ES )
{
p_sys->skeleton.b_create = false;
}
else
{
for ( int i=0; i< p_mux->i_nb_inputs; i++ )
{
ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
if( p_stream->p_oggds_header )
{
/* We don't want skeleton for OggDS */
p_sys->skeleton.b_create = false;
break;
}
}
}
/* Skeleton's Fishead must be the first page of the stream */
if ( p_sys->skeleton.b_create && !p_sys->skeleton.b_head_done )
{
msg_Dbg( p_mux, "creating header for skeleton" );
p_sys->skeleton.i_serial_no = p_sys->i_next_serial_no++;
ogg_stream_init( &p_sys->skeleton.os, p_sys->skeleton.i_serial_no );
op.bytes = 80;
op.packet = calloc( 1, op.bytes );
if ( op.packet == NULL ) return false;
op.b_o_s = 1;
op.e_o_s = 0;
op.granulepos = 0;
op.packetno = 0;
OggFillSkeletonFishead( op.packet, p_mux );
ogg_stream_packetin( &p_sys->skeleton.os, &op );
ogg_packet_clear( &op );
p_og = OggStreamFlush( p_mux, &p_sys->skeleton.os, 0 );
block_ChainAppend( &p_hdr, p_og );
p_sys->skeleton.b_head_done = true;
p_sys->skeleton.i_fishead_offset = p_sys->i_pos;
}
/* Write header for each stream. All b_o_s (beginning of stream) packets
* must appear first in the ogg stream so we take care of them first. */
for( int pass = 0; pass < 2; pass++ )
{
for( int i = 0; i < p_mux->i_nb_inputs; i++ )
{
sout_input_t *p_input = p_mux->pp_inputs[i];
ogg_stream_t *p_stream = p_input->p_sys;
bool video = ( p_stream->fmt.i_codec == VLC_CODEC_THEORA ||
p_stream->fmt.i_codec == VLC_CODEC_DIRAC ||
p_stream->fmt.i_codec == VLC_CODEC_DAALA );
if( ( ( pass == 0 && !video ) || ( pass == 1 && video ) ) )
continue;
msg_Dbg( p_mux, "creating header for %4.4s",
(char *)&p_stream->fmt.i_codec );
ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
p_stream->b_new = false;
p_stream->i_packet_no = 0;
p_stream->b_started = true;
if( p_stream->fmt.i_codec == VLC_CODEC_VORBIS ||
p_stream->fmt.i_codec == VLC_CODEC_SPEEX ||
p_stream->fmt.i_codec == VLC_CODEC_OPUS ||
p_stream->fmt.i_codec == VLC_CODEC_THEORA ||
p_stream->fmt.i_codec == VLC_CODEC_DAALA )
{
/* First packet in order: vorbis/speex/opus/theora/daala info */
unsigned pi_size[XIPH_MAX_HEADER_COUNT];
const void *pp_data[XIPH_MAX_HEADER_COUNT];
unsigned i_count;
if( xiph_SplitHeaders( pi_size, pp_data, &i_count,
p_input->p_fmt->i_extra, p_input->p_fmt->p_extra ) )
{
i_count = 0;
pi_size[0] = 0;
pp_data[0] = NULL;
}
op.bytes = pi_size[0];
op.packet = (void *)pp_data[0];
if( pi_size[0] <= 0 )
msg_Err( p_mux, "header data corrupted");
op.b_o_s = 1;
op.e_o_s = 0;
op.granulepos = 0;
op.packetno = p_stream->i_packet_no++;
ogg_stream_packetin( &p_stream->os, &op );
p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
/* Get keyframe_granule_shift for theora or daala granulepos calculation */
if( p_stream->fmt.i_codec == VLC_CODEC_THEORA ||
p_stream->fmt.i_codec == VLC_CODEC_DAALA )
{
p_stream->i_keyframe_granule_shift =
( (op.packet[40] & 0x03) << 3 ) | ( (op.packet[41] & 0xe0) >> 5 );
}
}
else if( p_stream->fmt.i_codec == VLC_CODEC_DIRAC )
{
op.packet = p_input->p_fmt->p_extra;
op.bytes = p_input->p_fmt->i_extra;
op.b_o_s = 1;
op.e_o_s = 0;
op.granulepos = ~0;
op.packetno = p_stream->i_packet_no++;
ogg_stream_packetin( &p_stream->os, &op );
p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
}
else if( p_stream->fmt.i_codec == VLC_CODEC_FLAC )
{
/* flac stream marker (yeah, only that in the 1st packet) */
op.packet = (unsigned char *)"fLaC";
op.bytes = 4;
op.b_o_s = 1;
op.e_o_s = 0;
op.granulepos = 0;
op.packetno = p_stream->i_packet_no++;
ogg_stream_packetin( &p_stream->os, &op );
p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
}
else if( p_stream->fmt.i_codec == VLC_CODEC_VP8 )
{
/* VP8 Header */
op.packet = malloc( 26 );
if( !op.packet )
return false;
op.bytes = 26;
OggFillVP8Header( op.packet, p_input );
op.b_o_s = 1;
op.e_o_s = 0;
op.granulepos = 0;
op.packetno = p_stream->i_packet_no++;
ogg_stream_packetin( &p_stream->os, &op );
p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
free( op.packet );
}
else if( p_stream->p_oggds_header )
{
/* ds header */
op.packet = malloc( sizeof(*p_stream->p_oggds_header) + p_stream->p_oggds_header->i_size );
if( !op.packet )
return false;
op.bytes = OggFillDsHeader( op.packet, p_stream->p_oggds_header, p_stream->fmt.i_cat );
op.b_o_s = 1;
op.e_o_s = 0;
op.granulepos = 0;
op.packetno = p_stream->i_packet_no++;
ogg_stream_packetin( &p_stream->os, &op );
p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
free( op.packet );
}
block_ChainAppend( &p_hdr, p_og );
}
}
/* Create fisbones if any */
if ( p_sys->skeleton.b_create )
{
for( int i = 0; i < p_mux->i_nb_inputs; i++ )
{
sout_input_t *p_input = p_mux->pp_inputs[i];
ogg_stream_t *p_stream = p_input->p_sys;
if ( p_stream->skeleton.b_fisbone_done ) continue;
OggGetSkeletonFisbone( &op.packet, &op.bytes, p_input, p_mux );
if ( op.packet == NULL ) return false;
op.b_o_s = 0;
op.e_o_s = 0;
op.granulepos = 0;
op.packetno = p_sys->skeleton.i_packet_no++;
ogg_stream_packetin( &p_sys->skeleton.os, &op );
ogg_packet_clear( &op );
p_og = OggStreamFlush( p_mux, &p_sys->skeleton.os, 0 );
block_ChainAppend( &p_hdr, p_og );
p_stream->skeleton.b_fisbone_done = true;
}
}
/* Write previous headers */
for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
{
/* flag headers to be resent for streaming clients */
p_og->i_flags |= BLOCK_FLAG_HEADER;
}
p_sys->i_pos += sout_AccessOutWrite( p_mux->p_access, p_hdr );
p_hdr = NULL;
/* Create indexes if any */
for( int i = 0; i < p_mux->i_nb_inputs; i++ )
{
sout_input_t *p_input = p_mux->pp_inputs[i];
ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
/* flush stream && save offset */
if ( p_sys->skeleton.b_create && !p_stream->skeleton.b_index_done )
{
if ( !p_stream->skeleton.p_index ) AllocateIndex( p_mux, p_input );
if ( p_stream->skeleton.p_index )
{
msg_Dbg( p_mux, "Creating index for stream %d", p_stream->i_serial_no );
OggGetSkeletonIndex( &op.packet, &op.bytes, p_stream );
if ( op.packet == NULL ) return false;
op.b_o_s = 0;
op.e_o_s = 0;
op.granulepos = 0;
op.packetno = p_sys->skeleton.i_packet_no++;
/* backup some values */
p_stream->skeleton.i_index_offset = p_sys->i_pos;
p_stream->skeleton.i_index_packetno = p_sys->skeleton.os.packetno;
p_stream->skeleton.i_index_pageno = p_sys->skeleton.os.pageno;
ogg_stream_packetin( &p_sys->skeleton.os, &op );
ogg_packet_clear( &op );
p_og = OggStreamFlush( p_mux, &p_sys->skeleton.os, 0 );
p_sys->i_pos += sout_AccessOutWrite( p_mux->p_access, p_og );
}
p_stream->skeleton.b_index_done = true;
}
}
/* Take care of the non b_o_s headers */
for( int i = 0; i < p_mux->i_nb_inputs; i++ )
{
sout_input_t *p_input = p_mux->pp_inputs[i];
ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
if( p_stream->fmt.i_codec == VLC_CODEC_VORBIS ||
p_stream->fmt.i_codec == VLC_CODEC_SPEEX ||
p_stream->fmt.i_codec == VLC_CODEC_OPUS ||
p_stream->fmt.i_codec == VLC_CODEC_THEORA ||
p_stream->fmt.i_codec == VLC_CODEC_DAALA )
{
unsigned pi_size[XIPH_MAX_HEADER_COUNT];
const void *pp_data[XIPH_MAX_HEADER_COUNT];
unsigned i_count;
if( xiph_SplitHeaders( pi_size, pp_data, &i_count,
p_input->p_fmt->i_extra, p_input->p_fmt->p_extra ) )
i_count = 0;
/* Special case, headers are already there in the incoming stream.
* We need to gather them an mark them as headers. */
for( unsigned j = 1; j < i_count; j++ )
{
op.bytes = pi_size[j];
op.packet = (void *)pp_data[j];
if( pi_size[j] <= 0 )
msg_Err( p_mux, "header data corrupted");
op.b_o_s = 0;
op.e_o_s = 0;
op.granulepos = 0;
op.packetno = p_stream->i_packet_no++;
ogg_stream_packetin( &p_stream->os, &op );
msg_Dbg( p_mux, "adding non bos, secondary header" );
if( j == i_count - 1 )
p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
else
p_og = OggStreamPageOut( p_mux, &p_stream->os, 0 );
if( p_og )
block_ChainAppend( &p_hdr, p_og );
}
}
else if( p_stream->fmt.i_codec != VLC_CODEC_FLAC &&
p_stream->fmt.i_codec != VLC_CODEC_DIRAC )
{
uint8_t com[128];
int i_com;
/* comment */
com[0] = PACKET_TYPE_COMMENT;
i_com = snprintf( (char *)(com+1), 127,
PACKAGE_VERSION" stream output" )
+ 1;
op.packet = com;
op.bytes = i_com;
op.b_o_s = 0;
op.e_o_s = 0;
op.granulepos = 0;
op.packetno = p_stream->i_packet_no++;
ogg_stream_packetin( &p_stream->os, &op );
p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
block_ChainAppend( &p_hdr, p_og );
}
/* Special case for mp4v and flac */
if( ( p_stream->fmt.i_codec == VLC_CODEC_MP4V ||
p_stream->fmt.i_codec == VLC_CODEC_FLAC ) &&
p_input->p_fmt->i_extra )
{
/* Send a packet with the VOL data for mp4v
* or STREAMINFO for flac */
msg_Dbg( p_mux, "writing extra data" );
op.bytes = p_input->p_fmt->i_extra;
op.packet = p_input->p_fmt->p_extra;
uint8_t flac_streaminfo[34 + 4];
if( p_stream->fmt.i_codec == VLC_CODEC_FLAC )
{
if (op.bytes == 42 && !memcmp(op.packet, "fLaC", 4)) {
op.bytes -= 4;
memcpy(flac_streaminfo, op.packet + 4, 38);
op.packet = flac_streaminfo;
} else if (op.bytes == 34) {
op.bytes += 4;
memcpy(flac_streaminfo + 4, op.packet, 34);
flac_streaminfo[0] = 0x80; /* last block, streaminfo */
flac_streaminfo[1] = 0;
flac_streaminfo[2] = 0;
flac_streaminfo[3] = 34; /* block size */
op.packet = flac_streaminfo;
} else {
msg_Err(p_mux, "Invalid FLAC streaminfo (%ld bytes)",
op.bytes);
}
}
op.b_o_s = 0;
op.e_o_s = 0;
op.granulepos = 0;
op.packetno = p_stream->i_packet_no++;
ogg_stream_packetin( &p_stream->os, &op );
p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
block_ChainAppend( &p_hdr, p_og );
}
}
if ( p_sys->skeleton.b_create )
{
msg_Dbg( p_mux, "ending skeleton" );
op.packet = NULL;
op.bytes = 0;
op.b_o_s = 0;
op.e_o_s = 1;
op.granulepos = 0;
op.packetno = p_sys->skeleton.i_packet_no++;
ogg_stream_packetin( &p_sys->skeleton.os, &op );
p_og = OggStreamFlush( p_mux, &p_sys->skeleton.os, 0 );
block_ChainAppend( &p_hdr, p_og );
}
/* set HEADER flag */
/* flag headers to be resent for streaming clients */
for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
{
p_og->i_flags |= BLOCK_FLAG_HEADER;
}
/* Write previous headers */
p_sys->i_pos += sout_AccessOutWrite( p_mux->p_access, p_hdr );
return true;
}
static void OggCreateStreamFooter( sout_mux_t *p_mux, ogg_stream_t *p_stream )
{
block_t *p_og;
ogg_packet op;
sout_mux_sys_t *p_sys = p_mux->p_sys;
/* as stream is finished, overwrite the index, if there was any */
if ( p_sys->skeleton.b_create && p_stream->skeleton.p_index
&& p_stream->skeleton.i_index_payload )
{
sout_AccessOutSeek( p_mux->p_access, p_stream->skeleton.i_index_offset );
OggGetSkeletonIndex( &op.packet, &op.bytes, p_stream );
if ( op.packet != NULL )
{
msg_Dbg(p_mux, "Rewriting index at %"PRId64, p_stream->skeleton.i_index_offset );
ogg_stream_reset_serialno( &p_sys->skeleton.os, p_sys->skeleton.i_serial_no );
op.b_o_s = 0;
op.e_o_s = 0;
op.granulepos = 0;
op.packetno = p_stream->skeleton.i_index_packetno + 1;
/* fake our stream state */
p_sys->skeleton.os.pageno = p_stream->skeleton.i_index_pageno;
p_sys->skeleton.os.packetno = p_stream->skeleton.i_index_packetno;
p_sys->skeleton.os.granulepos = 0;
p_sys->skeleton.os.b_o_s = 1;
p_sys->skeleton.os.e_o_s = 0;
ogg_stream_packetin( &p_sys->skeleton.os, &op );
ogg_packet_clear( &op );
p_og = OggStreamFlush( p_mux, &p_sys->skeleton.os, 0 );
sout_AccessOutWrite( p_mux->p_access, p_og );
}
sout_AccessOutSeek( p_mux->p_access, p_sys->i_pos );
}
/* clear skeleton */
p_stream->skeleton.b_fisbone_done = false;
p_stream->skeleton.b_index_done = false;
p_stream->skeleton.i_index_offset = 0;
p_stream->skeleton.i_index_payload = 0;
p_stream->skeleton.i_last_keyframe_pos = 0;
p_stream->skeleton.i_last_keyframe_time = 0;
/* clear accounting */
p_stream->i_num_frames = 0;
p_stream->i_num_keyframes = 0;
/* Write eos packet for stream. */
op.packet = NULL;
op.bytes = 0;
op.b_o_s = 0;
op.e_o_s = 1;
op.granulepos = p_stream->u_last_granulepos;
op.packetno = p_stream->i_packet_no++;
ogg_stream_packetin( &p_stream->os, &op );
/* flush it with all remaining data */
if( ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
{
/* Write footer */
OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
p_sys->i_pos += sout_AccessOutWrite( p_mux->p_access, p_og );
}
ogg_stream_clear( &p_stream->os );
}
static void OggSetDate( block_t *p_og, vlc_tick_t i_dts, vlc_tick_t i_length )
{
int i_count;
block_t *p_tmp;
vlc_tick_t i_delta;
for( p_tmp = p_og, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->p_next )
{
i_count++;
}
if( i_count == 0 ) return; /* ignore. */
i_delta = i_length / i_count;
for( p_tmp = p_og; p_tmp != NULL; p_tmp = p_tmp->p_next )
{
p_tmp->i_dts = i_dts;
p_tmp->i_length = i_delta;
i_dts += i_delta;
}
}
static void OggRewriteFisheadPage( sout_mux_t *p_mux )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
ogg_packet op;
op.bytes = 80;
op.packet = calloc( 1, op.bytes );
if ( op.packet != NULL )
{
op.b_o_s = 1;
op.e_o_s = 0;
op.granulepos = 0;
op.packetno = 0;
ogg_stream_reset_serialno( &p_sys->skeleton.os, p_sys->skeleton.i_serial_no );
OggFillSkeletonFishead( op.packet, p_mux );
ogg_stream_packetin( &p_sys->skeleton.os, &op );
ogg_packet_clear( &op );
msg_Dbg( p_mux, "rewriting fishead at %"PRId64, p_sys->skeleton.i_fishead_offset );
sout_AccessOutSeek( p_mux->p_access, p_sys->skeleton.i_fishead_offset );
sout_AccessOutWrite( p_mux->p_access,
OggStreamFlush( p_mux, &p_sys->skeleton.os, 0 ) );
sout_AccessOutSeek( p_mux->p_access, p_sys->i_pos );
}
}
static bool AllocateIndex( sout_mux_t *p_mux, sout_input_t *p_input )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
ogg_stream_t *p_stream = (ogg_stream_t *) p_input->p_sys;
size_t i_size;
if ( p_stream->i_length )
{
vlc_tick_t i_interval = p_sys->skeleton.i_index_intvl;
uint64_t i;
if( p_input->p_fmt->i_cat == VIDEO_ES &&
p_stream->fmt.video.i_frame_rate )
{
/* optimize for fps < 1 */
i_interval= __MAX( i_interval,
VLC_TICK_FROM_SEC(10) *
p_stream->fmt.video.i_frame_rate_base /
p_stream->fmt.video.i_frame_rate );
}
size_t i_tuple_size = 0;
/* estimate length of pos value */
if ( p_input->p_fmt->i_bitrate )
{
i = samples_from_vlc_tick(i_interval, p_input->p_fmt->i_bitrate);
while ( i <<= 1 ) i_tuple_size++;
}
else
{
/* Likely 64KB<<keyframe interval<<16MB */
/* We can't really guess due to muxing */
i_tuple_size = 24 / 8;
}
/* add length of interval value */
i = i_interval;
while ( i <<= 1 ) i_tuple_size++;
i_size = i_tuple_size * ( p_stream->i_length / i_interval + 2 );
}
else
{
i_size = ( INT64_C(3600) * 11.2 * CLOCK_FREQ / p_sys->skeleton.i_index_intvl )
* p_sys->skeleton.i_index_ratio;
msg_Dbg( p_mux, "No stream length, using default allocation for index" );
}
i_size *= ( 8.0 / 7 ); /* 7bits encoding overhead */
msg_Dbg( p_mux, "allocating %zu bytes for index", i_size );
p_stream->skeleton.p_index = calloc( i_size, sizeof(uint8_t) );
if ( !p_stream->skeleton.p_index ) return false;
p_stream->skeleton.i_index_size = i_size;
p_stream->skeleton.i_index_payload = 0;
return true;
}
/*****************************************************************************
* Mux: multiplex available data in input fifos into the Ogg bitstream
*****************************************************************************/
static int Mux( sout_mux_t *p_mux )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
vlc_tick_t i_dts;
/* End any stream that ends in that group */
if ( p_sys->i_del_streams )
{
/* Remove deleted logical streams */
for( int i = 0; i < p_sys->i_del_streams; i++ )
{
OggCreateStreamFooter( p_mux, p_sys->pp_del_streams[i] );
FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
FREENULL( p_sys->pp_del_streams[i] );
}
FREENULL( p_sys->pp_del_streams );
p_sys->i_del_streams = 0;
}
if ( p_sys->i_streams == 0 )
{
/* All streams have been deleted, or none have ever been created
From this point, we are allowed to start a new group of logical streams */
p_sys->skeleton.b_head_done = false;
p_sys->b_can_add_streams = true;
p_sys->i_segment_start = p_sys->i_pos;
}
if ( p_sys->i_add_streams )
{
if ( !p_sys->b_can_add_streams )
{
msg_Warn( p_mux, "Can't add new stream %d/%d: Considerer increasing sout-mux-caching variable", p_sys->i_del_streams, p_sys->i_streams);
msg_Warn( p_mux, "Resetting and setting new identity to current streams");
/* resetting all active streams */
for ( int i=0; i < p_sys->i_streams; i++ )
{
ogg_stream_t * p_stream = (ogg_stream_t *) p_mux->pp_inputs[i]->p_sys;
if ( p_stream->b_finished || !p_stream->b_started ) continue;
OggCreateStreamFooter( p_mux, p_stream );
p_stream->i_serial_no = p_sys->i_next_serial_no++;
p_stream->i_packet_no = 0;
p_stream->b_finished = true;
}
/* rewrite fishead with final values */
if ( p_sys->skeleton.b_head_done )
{
OggRewriteFisheadPage( p_mux );
}
p_sys->b_can_add_streams = true;
p_sys->skeleton.b_head_done = false;
p_sys->i_segment_start = p_sys->i_pos;
}
/* Open new ogg stream */
if( sout_MuxGetStream( p_mux, 1, &i_dts) < 0 )
{
msg_Dbg( p_mux, "waiting for data..." );
return VLC_SUCCESS;
}
msg_Dbg( p_mux, "writing streams headers" );
p_sys->i_start_dts = i_dts;
p_sys->i_streams = p_mux->i_nb_inputs;
p_sys->i_del_streams = 0;
p_sys->i_add_streams = 0;
p_sys->skeleton.b_create = true;
if ( ! OggCreateHeaders( p_mux ) )
return VLC_ENOMEM;
/* If we're switching to end of headers, then that's data start */
if ( p_sys->b_can_add_streams )
{
msg_Dbg( p_mux, "data starts from %zu", p_sys->i_pos );
p_sys->i_data_start = p_sys->i_pos;
}
/* Since we started sending secondaryheader or data pages,
* we're no longer allowed to create new streams, until all streams end */
p_sys->b_can_add_streams = false;
}
/* Do the regular data mux thing */
for( ;; )
{
int i_stream = sout_MuxGetStream( p_mux, 1, NULL );
if( i_stream < 0 )
return VLC_SUCCESS;
MuxBlock( p_mux, p_mux->pp_inputs[i_stream] );
}
return VLC_SUCCESS;
}
static int MuxBlock( sout_mux_t *p_mux, sout_input_t *p_input )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
block_t *p_data = block_FifoGet( p_input->p_fifo );
block_t *p_og = NULL;
ogg_packet op;
vlc_tick_t i_time;
if( p_stream->fmt.i_codec != VLC_CODEC_VORBIS &&
p_stream->fmt.i_codec != VLC_CODEC_FLAC &&
p_stream->fmt.i_codec != VLC_CODEC_SPEEX &&
p_stream->fmt.i_codec != VLC_CODEC_OPUS &&
p_stream->fmt.i_codec != VLC_CODEC_THEORA &&
p_stream->fmt.i_codec != VLC_CODEC_DAALA &&
p_stream->fmt.i_codec != VLC_CODEC_VP8 &&
p_stream->fmt.i_codec != VLC_CODEC_DIRAC )
{
p_data = block_Realloc( p_data, 1, p_data->i_buffer );
p_data->p_buffer[0] = PACKET_IS_SYNCPOINT; // FIXME
}
if ( p_stream->fmt.i_codec == VLC_CODEC_DIRAC && p_stream->i_baseptsdelay < 0 )
p_stream->i_baseptsdelay = p_data->i_pts - p_data->i_dts;
op.packet = p_data->p_buffer;
op.bytes = p_data->i_buffer;
op.b_o_s = 0;
op.e_o_s = 0;
op.packetno = p_stream->i_packet_no++;
op.granulepos = -1;
if( p_stream->fmt.i_cat == AUDIO_ES )
{
if( p_stream->fmt.i_codec == VLC_CODEC_VORBIS ||
p_stream->fmt.i_codec == VLC_CODEC_FLAC ||
p_stream->fmt.i_codec == VLC_CODEC_OPUS ||
p_stream->fmt.i_codec == VLC_CODEC_SPEEX )
{
/* number of sample from beginning + current packet */
op.granulepos =
samples_from_vlc_tick( p_data->i_dts - p_sys->i_start_dts + p_data->i_length,
p_input->p_fmt->audio.i_rate );
i_time = p_data->i_dts - p_sys->i_start_dts;
AddIndexEntry( p_mux, i_time, p_input );
}
else if( p_stream->p_oggds_header )
{
/* number of sample from beginning */
op.granulepos = samples_from_vlc_tick( p_data->i_dts - p_sys->i_start_dts,
p_stream->p_oggds_header->i_samples_per_unit );
}
}
else if( p_stream->fmt.i_cat == VIDEO_ES )
{
if( p_stream->fmt.i_codec == VLC_CODEC_THEORA ||
p_stream->fmt.i_codec == VLC_CODEC_DAALA )
{
p_stream->i_num_frames++;
if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
{
p_stream->i_num_keyframes++;
p_stream->i_last_keyframe = p_stream->i_num_frames;
/* presentation time */
i_time = vlc_tick_from_samples( (p_stream->i_num_frames - 1 ) *
p_stream->fmt.video.i_frame_rate_base,
p_stream->fmt.video.i_frame_rate );
AddIndexEntry( p_mux, i_time, p_input );
}
op.granulepos = (p_stream->i_last_keyframe << p_stream->i_keyframe_granule_shift )
| (p_stream->i_num_frames-p_stream->i_last_keyframe);
}
else if( p_stream->fmt.i_codec == VLC_CODEC_DIRAC )
{
#define FRAME_ROUND(a) \
if ( ( a + 5000 / CLOCK_FREQ ) > ( a / CLOCK_FREQ ) )\
a += 5000;\
a /= CLOCK_FREQ;
int64_t dt = (p_data->i_dts - p_sys->i_start_dts) * p_stream->fmt.video.i_frame_rate /
p_stream->fmt.video.i_frame_rate_base;
FRAME_ROUND( dt );
int64_t pt = (p_data->i_pts - p_sys->i_start_dts - p_stream->i_baseptsdelay ) *
p_stream->fmt.video.i_frame_rate / p_stream->fmt.video.i_frame_rate_base;
FRAME_ROUND( pt );
/* (shro) some PTS could be repeated within 1st frames */
if ( pt == p_stream->i_dirac_last_pt )
pt++;
else
p_stream->i_dirac_last_pt = pt;
/* (shro) some DTS could be repeated within 1st frames */
if ( dt == p_stream->i_dirac_last_dt )
dt++;
else
p_stream->i_dirac_last_dt = dt;
if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
p_stream->i_last_keyframe = dt;
int64_t dist = dt - p_stream->i_last_keyframe;
/* Everything increments by two for progressive */
if ( true )
{
pt *=2;
dt *=2;
}
int64_t delay = llabs(pt - dt);
op.granulepos = (pt - delay) << 31 | (dist&0xff00) << 14
| (delay&0x1fff) << 9 | (dist&0xff);
#ifndef NDEBUG
msg_Dbg( p_mux, "dts %"PRId64" pts %"PRId64" dt %"PRId64" pt %"PRId64" delay %"PRId64" granule %"PRId64,
(p_data->i_dts - p_sys->i_start_dts),
(p_data->i_pts - p_sys->i_start_dts ),
dt, pt, delay, op.granulepos );
#endif
AddIndexEntry( p_mux, dt, p_input );
}
else if( p_stream->fmt.i_codec == VLC_CODEC_VP8 )
{
p_stream->i_num_frames++;
if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
{
p_stream->i_num_keyframes++;
p_stream->i_last_keyframe = p_stream->i_num_frames;
/* presentation time */
i_time = vlc_tick_from_samples( ( p_stream->i_num_frames - 1 ) *
p_stream->fmt.video.i_frame_rate_base, p_stream->fmt.video.i_frame_rate );
AddIndexEntry( p_mux, i_time, p_input );
}
op.granulepos = ( ((int64_t)p_stream->i_num_frames) << 32 ) |
( ( ( p_stream->i_num_frames - p_stream->i_last_keyframe ) & 0x07FFFFFF ) << 3 );
}
else if( p_stream->p_oggds_header )
op.granulepos = MSFTIME_FROM_VLC_TICK( p_data->i_dts - p_sys->i_start_dts ) /
p_stream->p_oggds_header->i_time_unit;
}
else if( p_stream->fmt.i_cat == SPU_ES )
{
/* granulepos is in millisec */
op.granulepos = MS_FROM_VLC_TICK( p_data->i_dts - p_sys->i_start_dts );
}
else
return VLC_EGENERIC;
p_stream->u_last_granulepos = op.granulepos;
ogg_stream_packetin( &p_stream->os, &op );
if( p_stream->fmt.i_cat == SPU_ES ||
p_stream->fmt.i_codec == VLC_CODEC_SPEEX ||
p_stream->fmt.i_codec == VLC_CODEC_DIRAC )
{
/* Subtitles or Speex packets are quite small so they
* need to be flushed to be sent on time */
/* The OggDirac mapping suggests ever so strongly that a
* page flush occurs after each OggDirac packet, so to make
* the timestamps unambiguous */
p_og = OggStreamFlush( p_mux, &p_stream->os, p_data->i_dts );
}
else
{
p_og = OggStreamPageOut( p_mux, &p_stream->os, p_data->i_dts );
}
if( p_og )
{
OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
p_stream->i_dts = -1;
p_stream->i_length = 0;
p_sys->i_pos += sout_AccessOutWrite( p_mux->p_access, p_og );
}
else
{
if( p_stream->i_dts < 0 )
{
p_stream->i_dts = p_data->i_dts;
}
p_stream->i_length += p_data->i_length;
}
block_Release( p_data );
return VLC_SUCCESS;
}
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