Commit a9654857 authored by Jean-Baptiste Kempf's avatar Jean-Baptiste Kempf

Parse RealAudio headers files. Doesn't decode correctly yet .

parent cc6941a5
......@@ -39,12 +39,14 @@
*
* Real Audio Only
* ---------------
* Not supported...
* v3 and v4/5 headers are parsed.
* Doesn't work yet...
*/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
......@@ -52,7 +54,6 @@
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_demux.h>
#include <vlc_charset.h>
#include <vlc_meta.h>
......@@ -95,7 +96,7 @@ typedef struct
int i_subpacket;
int i_subpackets;
block_t **p_subpackets;
int64_t *p_subpackets_timecode;
int64_t *p_subpackets_timecode;
int i_out_subpacket;
} real_track_t;
......@@ -115,6 +116,8 @@ struct demux_sys_t
uint32_t i_data_packets;
int64_t i_data_offset_next;
bool b_is_real_audio;
int i_our_duration;
int i_mux_rate;
......@@ -131,15 +134,16 @@ struct demux_sys_t
int64_t i_pcr;
vlc_meta_t *p_meta;
int64_t i_index_offset;
int b_seek;
rm_index_t * p_index;
int64_t i_index_offset;
int b_seek;
rm_index_t *p_index;
};
static int Demux( demux_t *p_demux );
static int Control( demux_t *p_demux, int i_query, va_list args );
static int HeaderRead( demux_t *p_demux );
static uint8_t * MetaRead( demux_t *p_demux, const uint8_t *p_peek );
static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num );
/*****************************************************************************
......@@ -151,14 +155,18 @@ static int Open( vlc_object_t *p_this )
demux_sys_t *p_sys;
const uint8_t *p_peek;
bool b_is_real_audio = false;
if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 ) return VLC_EGENERIC;
/* Real Audio */
if( !memcmp( p_peek, ".ra", 3 ) )
{
msg_Warn( p_demux, ".ra files unsuported" );
return VLC_EGENERIC;
msg_Err( p_demux, ".ra files unsuported" );
b_is_real_audio = true;
}
if( memcmp( p_peek, ".RMF", 4 ) ) return VLC_EGENERIC;
/* Real Media Format */
else if( memcmp( p_peek, ".RMF", 4 ) ) return VLC_EGENERIC;
/* Fill p_demux field */
p_demux->pf_demux = Demux;
......@@ -176,9 +184,18 @@ static int Open( vlc_object_t *p_this )
p_sys->i_pcr = 1;
p_sys->b_seek = 0;
p_sys->b_is_real_audio = b_is_real_audio;
/* Parse the headers */
if( HeaderRead( p_demux ) )
/* Real Audio files */
if( b_is_real_audio )
{
ReadCodecSpecificData( p_demux, 32, 0 ); /* At least 32 */
return VLC_EGENERIC; /* We don't know how to read
correctly the data yet */
}
/* RMF files */
else if( HeaderRead( p_demux ) )
{
int i;
msg_Err( p_demux, "invalid header" );
......@@ -281,6 +298,7 @@ static int Demux( demux_t *p_demux )
if( stream_Read( p_demux->s, header, 12 ) < 12 ) return 0;
// int i_version = GetWBE( &header[0] );
i_size = GetWBE( &header[2] ) - 12;
i_id = GetWBE( &header[4] );
i_pts = 1000 * GetDWBE( &header[6] );
......@@ -1167,6 +1185,73 @@ static int HeaderRead( demux_t *p_demux )
return VLC_SUCCESS;
}
static uint8_t * MetaRead( demux_t *p_demux, const uint8_t *p_peek )
{
demux_sys_t *p_sys = p_demux->p_sys;
int i_len;
char *psz;
/* Title */
i_len = *p_peek ; p_peek++;
if( i_len > 0 )
{
psz = malloc( i_len + 1 );
memcpy( psz, p_peek, i_len );
psz[i_len] = '\0';
EnsureUTF8( psz );
msg_Dbg( p_demux, " - title=`%s'", psz );
p_sys->psz_title = psz;
}
p_peek += i_len;
/* Authors */
i_len = *p_peek ; p_peek++;
if( i_len > 0 )
{
psz = malloc( i_len + 1 );
memcpy( psz, p_peek, i_len );
psz[i_len] = '\0';
EnsureUTF8( psz );
msg_Dbg( p_demux, " - artist=`%s'", psz );
p_sys->psz_artist = psz;
}
p_peek += i_len;
/* Copyright */
i_len = *p_peek ; p_peek++;
if( i_len > 0 )
{
psz = malloc( i_len + 1 );
memcpy( psz, p_peek, i_len );
psz[i_len] = '\0';
EnsureUTF8( psz );
msg_Dbg( p_demux, " - Copyright=`%s'", psz );
p_sys->psz_copyright = psz;
}
p_peek += i_len;
/* Comment */
i_len = *p_peek ; p_peek++;
if( i_len > 0 )
{
psz = malloc( i_len + 1 );
memcpy( psz, p_peek, i_len );
psz[i_len] = '\0';
EnsureUTF8( psz );
msg_Dbg( p_demux, " - Comment=`%s'", psz );
p_sys->psz_description = psz;
}
p_peek += i_len;
return p_peek;
}
static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num )
{
demux_sys_t *p_sys = p_demux->p_sys;
......@@ -1244,77 +1329,20 @@ static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num )
p_peek += 6; /* 4 + version */
es_format_Init( &fmt, AUDIO_ES, 0 );
if( i_version == 3 )
if( i_version == 3 ) /* RMF version 3 or .ra version 3 */
{
int i_len;
char *psz;
i_header_size = GetWBE( p_peek ); p_peek += 2; /* Size from now */
p_peek += 10; /* Unknown */
msg_Dbg( p_demux, "Data Size: %i", GetDWBE( p_peek ) );
p_peek += 4; /* Data Size */
/* Title */
i_len = *p_peek ; p_peek++;
if( i_len > 0 )
{
psz = malloc( i_len + 1 );
memcpy( psz, p_peek, i_len );
psz[i_len] = '\0';
EnsureUTF8( psz );
msg_Dbg( p_demux, " - title=`%s'", psz );
p_sys->psz_title = psz;
}
p_peek += i_len;
/* Authors */
i_len = *p_peek ; p_peek++;
if( i_len > 0 )
{
psz = malloc( i_len + 1 );
memcpy( psz, p_peek, i_len );
psz[i_len] = '\0';
EnsureUTF8( psz );
msg_Dbg( p_demux, " - artist=`%s'", psz );
p_sys->psz_artist = psz;
}
p_peek += i_len;
/* Copyright */
i_len = *p_peek ; p_peek++;
if( i_len > 0 )
{
psz = malloc( i_len + 1 );
memcpy( psz, p_peek, i_len );
psz[i_len] = '\0';
/* Meta Datas */
p_peek = MetaRead( p_demux, p_peek );
EnsureUTF8( psz );
msg_Dbg( p_demux, " - Copyright=`%s'", psz );
p_sys->psz_copyright = psz;
}
p_peek += i_len;
/* Comment */
i_len = *p_peek ; p_peek++;
if( i_len > 0 )
{
psz = malloc( i_len + 1 );
memcpy( psz, p_peek, i_len );
psz[i_len] = '\0';
EnsureUTF8( psz );
msg_Dbg( p_demux, " - Comment=`%s'", psz );
p_sys->psz_description = psz;
}
/* This might be unusefull */
p_peek += i_len;
p_peek ++; /* Unknown */
p_peek ++; /* FourCC length = 4 */
memcpy( (char *)&fmt.i_codec, p_peek, 4 ); p_peek += 4;
/* Up to here :) */
p_peek ++; /* Unknown */
p_peek ++; /* FourCC length = 4 */
memcpy( (char *)&fmt.i_codec, p_peek, 4 ); p_peek += 4; /* FourCC*/
fmt.audio.i_channels = 1; /* This is always the case in rm3 */
fmt.audio.i_rate = 8000;
......@@ -1322,12 +1350,12 @@ static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num )
msg_Dbg( p_demux, " - audio codec=%4.4s channels=%d rate=%dHz",
(char*)&fmt.i_codec, fmt.audio.i_channels, fmt.audio.i_rate );
}
else /* RMF version 4/5 */
else /* RMF version 4/5 or .ra version 4 */
{
p_peek += 2; /* 00 00 */
p_peek += 4; /* .ra4 or .ra5 */
p_peek += 4; /* data size */
p_peek += 2; /* version (4 or 5) */
p_peek += 2; /* 00 00 */
p_peek += 4; /* .ra4 or .ra5 */
p_peek += 4; /* data size */
p_peek += 2; /* version (4 or 5) */
i_header_size = GetDWBE( p_peek ); p_peek += 4; /* header size */
i_flavor = GetWBE( p_peek ); p_peek += 2; /* codec flavor */
i_coded_frame_size = GetDWBE( p_peek ); p_peek += 4; /* coded frame size*/
......@@ -1337,14 +1365,15 @@ static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num )
i_subpacket_h = GetWBE( p_peek ); p_peek += 2; /* 1 */
i_frame_size = GetWBE( p_peek ); p_peek += 2; /* frame size */
i_subpacket_size = GetWBE( p_peek ); p_peek += 2; /* subpacket_size */
if( !i_subpacket_size || !i_frame_size || !i_coded_frame_size )
if( (!i_subpacket_size && !p_sys->b_is_real_audio )
|| !i_frame_size || !i_coded_frame_size )
return VLC_EGENERIC;
p_peek += 2; /* ?? */
if( i_version == 5 ) p_peek += 6; /* 0, srate, 0 */
fmt.audio.i_rate = GetWBE( p_peek ); p_peek += 2; /* Sample Rate */
p_peek += 2; /* ?? */
fmt.audio.i_rate = GetWBE( p_peek ); p_peek += 2; /* Sample Rate */
p_peek += 2; /* ?? */
fmt.audio.i_bitspersample = GetWBE( p_peek ); p_peek += 2;/* Sure?*/
fmt.audio.i_channels = GetWBE( p_peek ); p_peek += 2; /* Channels */
fmt.audio.i_blockalign = i_frame_size;
......@@ -1354,30 +1383,36 @@ static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num )
memcpy( (char *)p_genr, p_peek, 4 ); p_peek += 4; /* genr */
memcpy( (char *)&fmt.i_codec, p_peek, 4 ); p_peek += 4;
}
else
else /* version 4 */
{
p_peek += p_peek[0] + 1; /* descr 1 */
memcpy( (char *)&fmt.i_codec, p_peek + 1, 4 ); /* descr 2 */
p_peek += p_peek[0] + 1;
p_peek += 1 + p_peek[0]; /* Inteleaver ID string and lenth */
memcpy( (char *)&fmt.i_codec, p_peek + 1, 4 ); /* FourCC */
p_peek += 1 + p_peek[0];
}
msg_Dbg( p_demux, " - audio codec=%4.4s channels=%d rate=%dHz",
(char*)&fmt.i_codec, fmt.audio.i_channels, fmt.audio.i_rate );
p_peek += 3; /* ?? */
if( i_version == 5 ) p_peek++;
/* Extra Data then: DWord + byte[] */
fmt.i_extra = GetDWBE( p_peek ); p_peek += 4;
if( p_sys->b_is_real_audio )
{
p_peek = MetaRead( p_demux, p_peek );
}
else
{
if( i_version == 5 ) p_peek++;
/* Extra Data then: DWord + byte[] */
fmt.i_extra = GetDWBE( p_peek ); p_peek += 4;
}
}
switch( fmt.i_codec )
{
case VLC_FOURCC('1','4','_','4'):
/* fmt.audio.i_blockalign = 0x14 */
break;
case VLC_FOURCC('l','p','c','J'):
/* fmt.audio.i_blockalign = 0x14 */
fmt.i_codec = VLC_FOURCC( '1','4','_','4' );
case VLC_FOURCC('1','4','_','4'):
fmt.audio.i_blockalign = 0x14 ;
break;
case VLC_FOURCC('2','8','_','8'):
......@@ -1494,3 +1529,4 @@ static int ReadCodecSpecificData( demux_t *p_demux, int i_len, int i_num )
return VLC_SUCCESS;
}
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment