static int PeekBlock(stream_t *s, rar_block_t *hdr)
{
const uint8_t *peek;
int peek_size = stream_Peek(s, &peek, 11);
if (peek_size < 7)
return VLC_EGENERIC;
hdr->crc = GetWLE(&peek[0]);
hdr->type = peek[2];
hdr->flags = GetWLE(&peek[3]);
hdr->size = GetWLE(&peek[5]);
hdr->add_size = 0;
if ((hdr->flags & 0x8000) ||
hdr->type == RAR_BLOCK_FILE ||
hdr->type == RAR_BLOCK_SUBBLOCK) {
if (peek_size < 11)
return VLC_EGENERIC;
hdr->add_size = GetDWLE(&peek[7]);
}
if (hdr->size < 7)
return VLC_EGENERIC;
return VLC_SUCCESS;
}
/****************************************************************************
*
* Basics functions to manipulates chunks
*
****************************************************************************/
static int AVI_ChunkReadCommon( stream_t *s, avi_chunk_t *p_chk )
{
const uint8_t *p_peek;
int i_peek;
memset( p_chk, 0, sizeof( avi_chunk_t ) );
if( ( i_peek = stream_Peek( s, &p_peek, 8 ) ) < 8 )
{
return VLC_EGENERIC;
}
p_chk->common.i_chunk_fourcc = GetFOURCC( p_peek );
p_chk->common.i_chunk_size = GetDWLE( p_peek + 4 );
p_chk->common.i_chunk_pos = stream_Tell( s );
p_chk->common.p_father = NULL;
p_chk->common.p_next = NULL;
p_chk->common.p_first = NULL;
p_chk->common.p_next = NULL;
#ifdef AVI_DEBUG
msg_Dbg( (vlc_object_t*)s,
"found Chunk fourcc:%8.8x (%4.4s) size:%"PRId64" pos:%"PRId64,
p_chk->common.i_chunk_fourcc,
(char*)&p_chk->common.i_chunk_fourcc,
p_chk->common.i_chunk_size,
p_chk->common.i_chunk_pos );
#endif
return VLC_SUCCESS;
}
/*****************************************************************************
* Local functions
*****************************************************************************/
static int ChunkFind( demux_t *p_demux, const char *fcc, unsigned int *pi_size )
{
const uint8_t *p_peek;
for( ;; )
{
uint32_t i_size;
if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 )
{
msg_Err( p_demux, "cannot peek" );
return VLC_EGENERIC;
}
i_size = GetDWLE( p_peek + 4 );
msg_Dbg( p_demux, "chunk: fcc=`%4.4s` size=%"PRIu32, p_peek, i_size );
if( !memcmp( p_peek, fcc, 4 ) )
{
if( pi_size )
{
*pi_size = i_size;
}
return VLC_SUCCESS;
}
/* Skip chunk */
if( stream_Read( p_demux->s, NULL, 8 ) != 8 ||
stream_Read( p_demux->s, NULL, i_size ) != (int)i_size ||
( (i_size & 1) && stream_Read( p_demux->s, NULL, 1 ) != 1 ) )
return VLC_EGENERIC;
}
}
/*****************************************************************************
* DecodePacket: decodes an OggSpots packet.
*****************************************************************************/
static picture_t* DecodePacket(decoder_t* p_dec, block_t* p_block)
{
decoder_sys_t* p_sys = p_dec->p_sys;
uint32_t i_img_offset;
picture_t* p_pic;
if (p_block->i_buffer < 20) {
msg_Dbg(p_dec, "Packet too short");
goto error;
}
/* Byte offset */
i_img_offset = GetDWLE(p_block->p_buffer);
if (i_img_offset < 20) {
msg_Dbg(p_dec, "Invalid byte offset");
goto error;
}
/* Image format */
if ( !memcmp(&p_block->p_buffer[4], "PNG", 3) ) {
p_dec->fmt_in.video.i_chroma = VLC_CODEC_PNG;
}
else if ( !memcmp(&p_block->p_buffer[4], "JPEG", 4) ) {
p_dec->fmt_in.video.i_chroma = VLC_CODEC_JPEG;
}
else {
char psz_image_type[8+1];
strncpy(psz_image_type, (char*)&p_block->p_buffer[4], 8);
psz_image_type[sizeof(psz_image_type)-1] = '\0';
msg_Dbg(p_dec, "Unsupported image format: %s", psz_image_type);
goto error;
}
/* We currently ignore the rest of the header and let the image format
* handle the details */
p_block->i_buffer -= i_img_offset;
p_block->p_buffer += i_img_offset;
p_pic = image_Read(p_sys->p_image, p_block,
&p_dec->fmt_in,
&p_dec->fmt_out.video);
if (p_pic == NULL) {
return NULL;
}
p_pic->b_force = true;
p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
decoder_UpdateVideoFormat(p_dec);
return p_pic;
error:
block_Release(p_block);
return NULL;
}
static void U32LDecode( void *outp, const uint8_t *in, unsigned samples )
{
uint32_t *out = outp;
for( size_t i = 0; i < samples; i++ )
{
*(out++) = GetDWLE( in ) - 0x80000000;
in += 4;
}
}
static size_t GetAPEvXSize( const uint8_t *p_data, int i_data )
{
uint32_t flags;
size_t i_body;
if( i_data < APE_TAG_HEADERSIZE ||
( GetDWLE( &p_data[8] ) != 1000 && GetDWLE( &p_data[8] ) != 2000 ) || /* v1/v2 only */
strncmp( (char*)p_data, "APETAGEX", 8 ) ||
GetDWLE( &p_data[8+4+4] ) <= 0 )
return 0;
i_body = GetDWLE( &p_data[8+4] );
flags = GetDWLE( &p_data[8+4+4] );
/* is it the header */
if( flags & (1<<29) )
return i_body + ( (flags&(1<<30)) ? APE_TAG_HEADERSIZE : 0 );
/* it is the footer */
return i_body + ( (flags&(1<<31)) ? APE_TAG_HEADERSIZE : 0 );
}
static int comment_add(char **comments, size_t *length, const char *tag,
const char *val)
{
char *p = *comments;
int vendor_length = GetDWLE(p + 8);
size_t user_comment_list_length = GetDWLE(p + 8 + 4 + vendor_length);
size_t tag_len = (tag ? strlen(tag) : 0);
size_t val_len = strlen(val);
size_t len = (*length) + 4 + tag_len + val_len;
p = realloc(p, len);
if (p == NULL)
return 1;
SetDWLE(p + *length, tag_len + val_len); /* length of comment */
if (tag) memcpy(p + *length + 4, tag, tag_len); /* comment */
memcpy(p + *length + 4 + tag_len, val, val_len); /* comment */
SetDWLE(p + 8 + 4 + vendor_length, user_comment_list_length + 1);
*comments = p;
*length = len;
return 0;
}
static void S32IDecode( void *outp, const uint8_t *in, unsigned samples )
{
int32_t *out = outp;
for( size_t i = 0; i < samples; i++ )
{
#ifdef WORDS_BIGENDIAN
*(out++) = GetDWLE( in );
#else
*(out++) = GetDWBE( in );
#endif
in += 4;
}
}
static bool IsBmp(stream_t *s)
{
const uint8_t *header;
if (stream_Peek(s, &header, 18) < 18)
return false;
if (memcmp(header, "BM", 2) &&
memcmp(header, "BA", 2) &&
memcmp(header, "CI", 2) &&
memcmp(header, "CP", 2) &&
memcmp(header, "IC", 2) &&
memcmp(header, "PT", 2))
return false;
uint32_t file_size = GetDWLE(&header[2]);
uint32_t data_offset = GetDWLE(&header[10]);
uint32_t header_size = GetDWLE(&header[14]);
if (file_size != 14 && file_size != 14 + header_size &&
file_size <= data_offset)
return false;
if (data_offset < header_size + 14)
return false;
if (header_size != 12 && header_size < 40)
return false;
return true;
}
static void F32IDecode( void *outp, const uint8_t *in, unsigned samples )
{
float *out = outp;
for( size_t i = 0; i < samples; i++ )
{
union { float f; uint32_t u; } s;
#ifdef WORDS_BIGENDIAN
s.u = GetDWLE( in );
#else
s.u = GetDWBE( in );
#endif
*(out++) = s.f;
in += 4;
}
}
/*****************************************************************************
* Open: check file and initializes structures
*****************************************************************************/
static int Open( vlc_object_t * p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys;
const uint8_t *p_peek;
unsigned int i_size;
unsigned int i_extended;
const char *psz_name;
WAVEFORMATEXTENSIBLE *p_wf_ext = NULL;
WAVEFORMATEX *p_wf = NULL;
/* Is it a wav file ? */
if( stream_Peek( p_demux->s, &p_peek, 12 ) < 12 )
return VLC_EGENERIC;
if( memcmp( p_peek, "RIFF", 4 ) || memcmp( &p_peek[8], "WAVE", 4 ) )
{
return VLC_EGENERIC;
}
p_demux->pf_demux = Demux;
p_demux->pf_control = Control;
p_demux->p_sys = p_sys = malloc( sizeof( *p_sys ) );
if( unlikely(!p_sys) )
return VLC_ENOMEM;
p_sys->p_es = NULL;
p_sys->i_chans_to_reorder = 0;
p_sys->i_channel_mask = 0;
/* skip riff header */
if( stream_Read( p_demux->s, NULL, 12 ) != 12 )
goto error;
/* search fmt chunk */
if( ChunkFind( p_demux, "fmt ", &i_size ) )
{
msg_Err( p_demux, "cannot find 'fmt ' chunk" );
goto error;
}
i_size += 2;
if( i_size < sizeof( WAVEFORMATEX ) )
{
msg_Err( p_demux, "invalid 'fmt ' chunk" );
goto error;
}
if( stream_Read( p_demux->s, NULL, 8 ) != 8 )
goto error;
/* load waveformatex */
p_wf_ext = malloc( i_size );
if( unlikely( !p_wf_ext ) )
goto error;
p_wf = &p_wf_ext->Format;
p_wf->cbSize = 0;
i_size -= 2;
if( stream_Read( p_demux->s, p_wf, i_size ) != (int)i_size ||
( ( i_size & 1 ) && stream_Read( p_demux->s, NULL, 1 ) != 1 ) )
{
msg_Err( p_demux, "cannot load 'fmt ' chunk" );
goto error;
}
es_format_Init( &p_sys->fmt, AUDIO_ES, 0 );
wf_tag_to_fourcc( GetWLE( &p_wf->wFormatTag ), &p_sys->fmt.i_codec,
&psz_name );
p_sys->fmt.audio.i_channels = GetWLE ( &p_wf->nChannels );
p_sys->fmt.audio.i_rate = GetDWLE( &p_wf->nSamplesPerSec );
p_sys->fmt.audio.i_blockalign = GetWLE( &p_wf->nBlockAlign );
p_sys->fmt.i_bitrate = GetDWLE( &p_wf->nAvgBytesPerSec ) * 8;
p_sys->fmt.audio.i_bitspersample = GetWLE( &p_wf->wBitsPerSample );
if( i_size >= sizeof(WAVEFORMATEX) )
p_sys->fmt.i_extra = __MIN( GetWLE( &p_wf->cbSize ), i_size - sizeof(WAVEFORMATEX) );
i_extended = 0;
/* Handle new WAVE_FORMAT_EXTENSIBLE wav files */
/* see the following link for more information:
* http://www.microsoft.com/whdc/device/audio/multichaud.mspx#EFAA */
if( GetWLE( &p_wf->wFormatTag ) == WAVE_FORMAT_EXTENSIBLE &&
i_size >= sizeof( WAVEFORMATEXTENSIBLE ) &&
( p_sys->fmt.i_extra + sizeof( WAVEFORMATEX )
>= sizeof( WAVEFORMATEXTENSIBLE ) ) )
{
unsigned i_channel_mask;
GUID guid_subformat;
guid_subformat = p_wf_ext->SubFormat;
guid_subformat.Data1 = GetDWLE( &p_wf_ext->SubFormat.Data1 );
guid_subformat.Data2 = GetWLE( &p_wf_ext->SubFormat.Data2 );
guid_subformat.Data3 = GetWLE( &p_wf_ext->SubFormat.Data3 );
sf_tag_to_fourcc( &guid_subformat, &p_sys->fmt.i_codec, &psz_name );
i_extended = sizeof( WAVEFORMATEXTENSIBLE ) - sizeof( WAVEFORMATEX );
p_sys->fmt.i_extra -= i_extended;
i_channel_mask = GetDWLE( &p_wf_ext->dwChannelMask );
if( i_channel_mask )
{
int i_match = 0;
for( unsigned i = 0; i < sizeof(pi_channels_src)/sizeof(*pi_channels_src); i++ )
{
if( i_channel_mask & pi_channels_src[i] )
{
if( !( p_sys->i_channel_mask & pi_channels_in[i] ) )
i_match++;
i_channel_mask &= ~pi_channels_src[i];
p_sys->i_channel_mask |= pi_channels_in[i];
if( i_match >= p_sys->fmt.audio.i_channels )
break;
}
}
if( i_channel_mask )
msg_Warn( p_demux, "Some channels are unrecognized or uselessly specified (0x%x)", i_channel_mask );
if( i_match < p_sys->fmt.audio.i_channels )
{
int i_missing = p_sys->fmt.audio.i_channels - i_match;
msg_Warn( p_demux, "Trying to fill up unspecified position for %d channels", p_sys->fmt.audio.i_channels - i_match );
static const uint32_t pi_pair[] = { AOUT_CHAN_REARLEFT|AOUT_CHAN_REARRIGHT,
AOUT_CHAN_MIDDLELEFT|AOUT_CHAN_MIDDLERIGHT,
AOUT_CHAN_LEFT|AOUT_CHAN_RIGHT
};
/* FIXME: Unused yet
static const uint32_t pi_center[] = { AOUT_CHAN_REARCENTER,
0,
AOUT_CHAN_CENTER }; */
/* Try to complete with pair */
for( unsigned i = 0; i < sizeof(pi_pair)/sizeof(*pi_pair); i++ )
{
if( i_missing >= 2 && !(p_sys->i_channel_mask & pi_pair[i] ) )
{
i_missing -= 2;
p_sys->i_channel_mask |= pi_pair[i];
}
}
/* Well fill up with what we can */
for( unsigned i = 0; i < sizeof(pi_channels_in)/sizeof(*pi_channels_in) && i_missing > 0; i++ )
{
if( !( p_sys->i_channel_mask & pi_channels_in[i] ) )
{
p_sys->i_channel_mask |= pi_channels_in[i];
i_missing--;
if( i_missing <= 0 )
break;
}
}
i_match = p_sys->fmt.audio.i_channels - i_missing;
}
if( i_match < p_sys->fmt.audio.i_channels )
{
msg_Err( p_demux, "Invalid/unsupported channel mask" );
p_sys->i_channel_mask = 0;
}
}
}
else if( GetWLE( &p_wf->wFormatTag ) == WAVE_FORMAT_PCM &&
p_sys->fmt.audio.i_channels > 2 && p_sys->fmt.audio.i_channels <= 9 )
{
for( int i = 0; i < p_sys->fmt.audio.i_channels; i++ )
p_sys->i_channel_mask |= pi_channels_in[i];
}
if( p_sys->i_channel_mask )
{
if( p_sys->fmt.i_codec == VLC_FOURCC('a','r','a','w') ||
p_sys->fmt.i_codec == VLC_FOURCC('p','c','m',' ') ||
p_sys->fmt.i_codec == VLC_FOURCC('a','f','l','t') )
p_sys->i_chans_to_reorder =
aout_CheckChannelReorder( pi_channels_in, NULL,
p_sys->i_channel_mask,
p_sys->pi_chan_table );
msg_Dbg( p_demux, "channel mask: %x, reordering: %u",
p_sys->i_channel_mask, p_sys->i_chans_to_reorder );
}
p_sys->fmt.audio.i_physical_channels =
p_sys->fmt.audio.i_original_channels = p_sys->i_channel_mask;
if( p_sys->fmt.i_extra > 0 )
{
p_sys->fmt.p_extra = malloc( p_sys->fmt.i_extra );
if( unlikely(!p_sys->fmt.p_extra) )
{
p_sys->fmt.i_extra = 0;
goto error;
}
memcpy( p_sys->fmt.p_extra, (uint8_t *)p_wf + sizeof( WAVEFORMATEX ) + i_extended,
p_sys->fmt.i_extra );
}
msg_Dbg( p_demux, "format: 0x%4.4x, fourcc: %4.4s, channels: %d, "
"freq: %u Hz, bitrate: %uKo/s, blockalign: %d, bits/samples: %d, "
"extra size: %d",
GetWLE( &p_wf->wFormatTag ), (char *)&p_sys->fmt.i_codec,
p_sys->fmt.audio.i_channels, p_sys->fmt.audio.i_rate,
p_sys->fmt.i_bitrate / 8 / 1024, p_sys->fmt.audio.i_blockalign,
p_sys->fmt.audio.i_bitspersample, p_sys->fmt.i_extra );
free( p_wf );
p_wf = NULL;
switch( p_sys->fmt.i_codec )
{
case VLC_FOURCC( 'a', 'r', 'a', 'w' ):
case VLC_FOURCC( 'a', 'f', 'l', 't' ):
case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
case VLC_CODEC_ALAW:
case VLC_CODEC_MULAW:
case VLC_FOURCC( 'p', 'c', 'm', ' ' ):
if( FrameInfo_PCM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
&p_sys->fmt ) )
goto error;
break;
case VLC_CODEC_ADPCM_MS:
if( FrameInfo_MS_ADPCM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
&p_sys->fmt ) )
goto error;
break;
case VLC_CODEC_ADPCM_IMA_WAV:
if( FrameInfo_IMA_ADPCM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
&p_sys->fmt ) )
goto error;
break;
case VLC_FOURCC( 'm', 's', 0x00, 0x61 ):
case VLC_FOURCC( 'm', 's', 0x00, 0x62 ):
/* FIXME not sure at all FIXME */
if( FrameInfo_MS_ADPCM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
&p_sys->fmt ) )
goto error;
break;
case VLC_CODEC_MPGA:
case VLC_CODEC_A52:
/* FIXME set end of area FIXME */
goto error;
case VLC_CODEC_GSM_MS:
case VLC_CODEC_ADPCM_G726:
case VLC_CODEC_TRUESPEECH:
case VLC_CODEC_ATRAC3:
case VLC_CODEC_G723_1:
if( FrameInfo_MSGSM( &p_sys->i_frame_size, &p_sys->i_frame_samples,
&p_sys->fmt ) )
goto error;
break;
default:
msg_Err( p_demux, "unsupported codec (%4.4s)",
(char*)&p_sys->fmt.i_codec );
goto error;
}
if( p_sys->i_frame_size <= 0 || p_sys->i_frame_samples <= 0 )
{
msg_Dbg( p_demux, "invalid frame size: %i %i", p_sys->i_frame_size,
p_sys->i_frame_samples );
goto error;
}
if( p_sys->fmt.audio.i_rate <= 0 )
{
msg_Dbg( p_demux, "invalid sample rate: %i", p_sys->fmt.audio.i_rate );
goto error;
}
msg_Dbg( p_demux, "found %s audio format", psz_name );
if( ChunkFind( p_demux, "data", &p_sys->i_data_size ) )
{
msg_Err( p_demux, "cannot find 'data' chunk" );
goto error;
}
if( stream_Read( p_demux->s, NULL, 8 ) != 8 )
goto error;
p_sys->i_data_pos = stream_Tell( p_demux->s );
if( p_sys->fmt.i_bitrate <= 0 )
{
p_sys->fmt.i_bitrate = (int64_t)p_sys->i_frame_size *
p_sys->fmt.audio.i_rate * 8 / p_sys->i_frame_samples;
}
p_sys->p_es = es_out_Add( p_demux->out, &p_sys->fmt );
date_Init( &p_sys->pts, p_sys->fmt.audio.i_rate, 1 );
date_Set( &p_sys->pts, 1 );
return VLC_SUCCESS;
error:
msg_Err( p_demux, "An error occurred during wav demuxing" );
free( p_wf );
free( p_sys );
return VLC_EGENERIC;
}
/**
* Parse header extension object. Takes a pointer to a newly allocated
* header extension structure, a pointer to the data buffer and the
* length of the data buffer as its parameters. Subobject contents are
* not parsed, but they are added as a linked list to the header object.
*/
static int
asf_parse_headerext(asf_object_headerext_t *header, uint8_t *buf, uint64_t buflen)
{
int64_t datalen;
uint8_t *data;
if (header->size < 46) {
/* invalide size for headerext */
return ASF_ERROR_INVALID_OBJECT_SIZE;
}
/* Read reserved and datalen fields from the buffer */
GetGUID(buf + 24, &header->reserved1);
header->reserved2 = GetWLE(buf + 40);
header->datalen = GetDWLE(buf + 42);
if (header->datalen != header->size - 46) {
/* invalid header extension data length value */
return ASF_ERROR_INVALID_LENGTH;
}
header->data = buf + 46;
debug_printf("parsing header extension subobjects");
datalen = header->datalen;
data = header->data;
while (datalen > 0) {
asfint_object_t *current;
if (datalen < 24) {
/* not enough data for reading a new object */
break;
}
/* Allocate a new subobject */
current = malloc(sizeof(asfint_object_t));
if (!current) {
return ASF_ERROR_OUTOFMEM;
}
asf_parse_read_object(current, data);
if (current->size > datalen || current->size < 24) {
/* invalid object size */
break;
}
current->datalen = current->size - 24;
current->data = data + 24;
/* add to the list of subobjects */
if (!header->first) {
header->first = current;
header->last = current;
} else {
header->last->next = current;
header->last = current;
}
data += current->size;
datalen -= current->size;
}
if (datalen != 0) {
/* not enough data for reading the whole object */
return ASF_ERROR_INVALID_LENGTH;
}
debug_printf("header extension subobjects parsed successfully");
return header->size;
}
/*****************************************************************************
* Open: check file and initializes structures
*****************************************************************************/
static int Open( vlc_object_t * p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys;
xa_header_t p_xa;
const uint8_t *p_buf;
/* XA file heuristic */
if( stream_Peek( p_demux->s, &p_buf, sizeof( p_xa ) )
< (signed)sizeof( p_xa ) )
return VLC_EGENERIC;
memcpy( &p_xa, p_buf, sizeof( p_xa ) );
if( ( strncmp( p_xa.xa_id, "XAI", 4 )
&& strncmp( p_xa.xa_id, "XAJ", 4 ) )
|| ( GetWLE( &p_xa.wFormatTag ) != 0x0001)
|| ( GetWLE( &p_xa.wBitsPerSample ) != 16) )
return VLC_EGENERIC;
p_sys = malloc( sizeof( demux_sys_t ) );
if( unlikely( p_sys == NULL ) )
return VLC_ENOMEM;
p_demux->pf_demux = Demux;
p_demux->pf_control = Control;
p_demux->p_sys = p_sys;
p_sys->p_es = NULL;
/* skip XA header -- cannot fail */
stream_Read( p_demux->s, NULL, sizeof( p_xa ) );
es_format_Init( &p_sys->fmt, AUDIO_ES, VLC_FOURCC('X','A','J',0) );
msg_Dbg( p_demux, "assuming EA ADPCM audio codec" );
p_sys->fmt.audio.i_rate = GetDWLE( &p_xa.nSamplesPerSec );
p_sys->fmt.audio.i_bytes_per_frame = 15 * GetWLE( &p_xa.nChannels );
p_sys->fmt.audio.i_frame_length = 28; /* 28 samples of 4 bits each */
p_sys->fmt.audio.i_channels = GetWLE ( &p_xa.nChannels );
p_sys->fmt.audio.i_blockalign = p_sys->fmt.audio.i_bytes_per_frame;
p_sys->fmt.audio.i_bitspersample = 16;
p_sys->fmt.i_bitrate = (p_sys->fmt.audio.i_rate
* p_sys->fmt.audio.i_bytes_per_frame * 8)
/ p_sys->fmt.audio.i_frame_length;
p_sys->fmt.i_extra = 0;
p_sys->fmt.p_extra = NULL;
p_sys->i_data_offset = stream_Tell( p_demux->s );
/* FIXME: better computation */
p_sys->i_data_size = p_xa.iSize * 15 / 56;
/* How many frames per block (1:1 is too CPU intensive) */
p_sys->i_block_frames = p_sys->fmt.audio.i_rate / (28 * 20) + 1;
msg_Dbg( p_demux, "fourcc: %4.4s, channels: %d, "
"freq: %d Hz, bitrate: %dKo/s, blockalign: %d",
(char *)&p_sys->fmt.i_codec, p_sys->fmt.audio.i_channels,
p_sys->fmt.audio.i_rate, p_sys->fmt.i_bitrate / 8192,
p_sys->fmt.audio.i_blockalign );
p_sys->p_es = es_out_Add( p_demux->out, &p_sys->fmt );
date_Init( &p_sys->pts, p_sys->fmt.audio.i_rate, 1 );
date_Set( &p_sys->pts, 1 );
return VLC_SUCCESS;
}
/**
* Takes an initialized asf_file_t structure file as a parameter. Allocates
* a new asf_object_header_t in file->header and uses the file->iostream to
* read all fields and subobjects into it. Finally calls the
* asf_parse_header_validate function to validate the values and parse the
* commonly used values into the asf_file_t struct itself.
*/
int
asf_parse_header(asf_file_t *file)
{
asf_object_header_t *header;
asf_iostream_t *iostream;
uint8_t hdata[30];
int tmp;
file->header = NULL;
iostream = &file->iostream;
/* object minimum is 24 bytes and header needs to have
* the subobject count field and two reserved fields */
tmp = asf_byteio_read(iostream, hdata, 30);
if (tmp < 0) {
/* not enough data to read the header object */
return tmp;
}
file->header = malloc(sizeof(asf_object_header_t));
header = file->header;
if (!header) {
return ASF_ERROR_OUTOFMEM;
}
/* read the object and check its size value */
asf_parse_read_object((asfint_object_t *) header, hdata);
if (header->size < 30) {
/* invalid size for header object */
return ASF_ERROR_INVALID_OBJECT_SIZE;
}
/* read header object specific compulsory fields */
header->subobjects = GetDWLE(hdata + 24);
header->reserved1 = hdata[28];
header->reserved2 = hdata[29];
/* clear header extension object and subobject list */
header->ext = NULL;
header->first = NULL;
header->last = NULL;
/* the header data needs to be allocated for reading */
header->datalen = header->size - 30;
header->data = malloc(header->datalen * sizeof(uint8_t));
if (!header->data) {
return ASF_ERROR_OUTOFMEM;
}
tmp = asf_byteio_read(iostream, header->data, header->datalen);
if (tmp < 0) {
return tmp;
}
if (header->subobjects > 0) {
uint64_t datalen;
uint8_t *data;
int i;
debug_printf("starting to read subobjects");
/* use temporary variables for use during the read */
datalen = header->datalen;
data = header->data;
for (i=0; i<header->subobjects; i++) {
asfint_object_t *current;
if (datalen < 24) {
/* not enough data for reading object */
break;
}
current = malloc(sizeof(asfint_object_t));
if (!current) {
return ASF_ERROR_OUTOFMEM;
}
asf_parse_read_object(current, data);
if (current->size > datalen || current->size < 24) {
/* invalid object size */
break;
}
/* Check if the current subobject is a header extension
* object or just a normal subobject */
if (current->type == GUID_HEADER_EXTENSION && !header->ext) {
int ret;
asf_object_headerext_t *headerext;
/* we handle header extension separately because it has
* some subobjects as well */
current = realloc(current, sizeof(asf_object_headerext_t));
headerext = (asf_object_headerext_t *) current;
headerext->first = NULL;
headerext->last = NULL;
ret = asf_parse_headerext(headerext, data, datalen);
if (ret < 0) {
/* error parsing header extension */
return ret;
}
header->ext = headerext;
} else {
if (current->type == GUID_HEADER_EXTENSION) {
debug_printf("WARNING! Second header extension object found, ignoring it!");
}
current->datalen = current->size - 24;
current->data = data + 24;
/* add to list of subobjects */
if (!header->first) {
header->first = current;
header->last = current;
} else {
header->last->next = current;
header->last = current;
}
}
data += current->size;
datalen -= current->size;
}
if (i != header->subobjects || datalen != 0) {
/* header data size doesn't match given subobject count */
return ASF_ERROR_INVALID_VALUE;
}
debug_printf("%d subobjects read successfully", i);
}
tmp = asf_parse_header_validate(file, file->header);
if (tmp < 0) {
/* header read ok but doesn't validate correctly */
return tmp;
}
debug_printf("header validated correctly");
return header->size;
}
/**
* Takes an initialized asf_file_t structure file as a parameter. Allocates
* a new asf_object_index_t in file->index and uses the file->iostream to
* read all its compulsory fields into it. Notice that the actual data is
* not read in any way, because we need to be able to work with non-seekable
* streams as well.
*/
int
asf_parse_index(asf_file_t *file)
{
asf_object_index_t *index;
asf_iostream_t *iostream;
uint8_t idata[56];
uint64_t entry_data_size;
uint8_t *entry_data = NULL;
int tmp, i;
file->index = NULL;
iostream = &file->iostream;
/* read the raw data of an index header */
tmp = asf_byteio_read(iostream, idata, 56);
if (tmp < 0) {
printf("Could not read index header\n");
return tmp;
}
/* allocate the index object */
index = malloc(sizeof(asf_object_index_t));
if (!index) {
return ASF_ERROR_OUTOFMEM;
}
asf_parse_read_object((asfint_object_t *) index, idata);
if (index->type != GUID_INDEX) {
tmp = index->size;
free(index);
/* The guid type was wrong, just return the bytes to skip */
return tmp;
}
if (index->size < 56) {
/* invalid size for index object */
free(index);
return ASF_ERROR_INVALID_OBJECT_SIZE;
}
GetGUID(idata + 24, &index->file_id);
index->entry_time_interval = GetQWLE(idata + 40);
index->max_packet_count = GetDWLE(idata + 48);
index->entry_count = GetDWLE(idata + 52);
printf("INDEX\n");
printf("Total Index Entries %d\n",index->entry_count);
printf("Index Size in bytes %Ld\n",index->size);
printf("Index Max Packet Count %d\n",index->max_packet_count);
printf("Index Entry Time Interval %Ld\n",index->entry_time_interval);
if (index->entry_count == 0) {
printf("Index has no entries\n");
file->index = index;
return index->size;
}
if (index->entry_count * 6 + 56 > index->size) {
free(index);
return ASF_ERROR_INVALID_LENGTH;
}
entry_data_size = index->entry_count * 6;
entry_data = malloc(entry_data_size * sizeof(uint8_t));
if (!entry_data) {
free(index);
return ASF_ERROR_OUTOFMEM;
}
tmp = asf_byteio_read(iostream, entry_data, entry_data_size);
if (tmp < 0) {
printf("Could not read entry data\n");
free(index);
free(entry_data);
return tmp;
}
index->entries = malloc(index->entry_count * sizeof(asf_index_entry_t));
if (!index->entries) {
free(index);
free(entry_data);
return ASF_ERROR_OUTOFMEM;
}
for (i=0; i<index->entry_count; i++) {
index->entries[i].packet_index = GetDWLE(entry_data + i*6);
index->entries[i].packet_count = GetWLE(entry_data + i*6 + 4);
}
free(entry_data);
file->index = index;
return index->size;
}
/*****************************************************************************
* Open: check file and initializes structures
*****************************************************************************/
static int Open( vlc_object_t * p_this )
{
demux_t *p_demux = (demux_t*)p_this;
const uint8_t *peek;
/* XA file heuristic */
if( vlc_stream_Peek( p_demux->s, &peek, 10 ) < 10 )
return VLC_EGENERIC;
if( memcmp( peek, "XAI", 4 ) && memcmp( peek, "XAJ", 4 ) &&
memcmp( peek, "XA\0", 4 ) )
return VLC_EGENERIC;
if( GetWLE( peek + 8 ) != 1 ) /* format tag */
return VLC_EGENERIC;
demux_sys_t *p_sys = vlc_obj_malloc( p_this, sizeof (*p_sys) );
if( unlikely( p_sys == NULL ) )
return VLC_ENOMEM;
/* read XA header*/
xa_header_t xa;
if( vlc_stream_Read( p_demux->s, &xa, HEADER_LENGTH ) < HEADER_LENGTH )
return VLC_EGENERIC;
es_format_t fmt;
es_format_Init( &fmt, AUDIO_ES, VLC_CODEC_ADPCM_XA_EA );
msg_Dbg( p_demux, "assuming EA ADPCM audio codec" );
fmt.audio.i_rate = GetDWLE( &xa.nSamplesPerSec );
fmt.audio.i_bytes_per_frame = 15 * GetWLE( &xa.nChannels );
fmt.audio.i_frame_length = FRAME_LENGTH;
fmt.audio.i_channels = GetWLE ( &xa.nChannels );
fmt.audio.i_blockalign = fmt.audio.i_bytes_per_frame;
fmt.audio.i_bitspersample = GetWLE( &xa.wBitsPerSample );
fmt.i_bitrate = (fmt.audio.i_rate * fmt.audio.i_bytes_per_frame * 8)
/ fmt.audio.i_frame_length;
/* FIXME: better computation */
p_sys->i_data_size = xa.iSize * 15 / 56;
/* How many frames per block (1:1 is too CPU intensive) */
p_sys->i_block_frames = fmt.audio.i_rate / (FRAME_LENGTH * 20) + 1;
p_sys->i_frame_size = fmt.audio.i_bytes_per_frame;
p_sys->i_bitrate = fmt.i_bitrate;
msg_Dbg( p_demux, "fourcc: %4.4s, channels: %d, "
"freq: %d Hz, bitrate: %dKo/s, blockalign: %d",
(char *)&fmt.i_codec, fmt.audio.i_channels, fmt.audio.i_rate,
fmt.i_bitrate / 8192, fmt.audio.i_blockalign );
if( fmt.audio.i_rate == 0 || fmt.audio.i_channels == 0
|| fmt.audio.i_bitspersample != 16 )
return VLC_EGENERIC;
p_sys->p_es = es_out_Add( p_demux->out, &fmt );
if( unlikely(p_sys->p_es == NULL) )
return VLC_ENOMEM;
date_Init( &p_sys->pts, fmt.audio.i_rate, 1 );
date_Set( &p_sys->pts, VLC_TICK_0 );
p_demux->pf_demux = Demux;
p_demux->pf_control = Control;
p_demux->p_sys = p_sys;
return VLC_SUCCESS;
}
static void ParseAPEvXTag( demux_meta_t *p_demux_meta, const uint8_t *p_data, int i_data )
{
vlc_meta_t *p_meta;
bool b_start;
bool b_end;
const uint8_t *p_header = NULL;
int i_entry;
if( i_data < APE_TAG_HEADERSIZE )
return;
b_start = !strncmp( (char*)&p_data[0], "APETAGEX", 8 );
b_end = !strncmp( (char*)&p_data[i_data-APE_TAG_HEADERSIZE], "APETAGEX", 8 );
if( !b_end && !b_start )
return;
if( !p_demux_meta->p_meta )
p_demux_meta->p_meta = vlc_meta_New();
p_meta = p_demux_meta->p_meta;
if( b_start )
{
p_header = &p_data[0];
p_data += APE_TAG_HEADERSIZE;
i_data -= APE_TAG_HEADERSIZE;
}
if( b_end )
{
p_header = &p_data[i_data-APE_TAG_HEADERSIZE];
i_data -= APE_TAG_HEADERSIZE;
}
if( i_data <= 0 )
return;
i_entry = GetDWLE( &p_header[8+4+4] );
if( i_entry <= 0 )
return;
while( i_entry > 0 && i_data >= 10 )
{
const int i_size = GetDWLE( &p_data[0] );
const uint32_t flags = GetDWLE( &p_data[4] );
char psz_name[256];
int n;
strlcpy( psz_name, (char*)&p_data[8], sizeof(psz_name) );
n = strlen( psz_name );
if( n <= 0 )
break;
p_data += 8+n+1;
i_data -= 8+n+1;
if( i_data < i_size )
break;
/* Retreive UTF-8 fields only */
if( ((flags>>1) & 0x03) == 0x00 )
{
/* FIXME list are separated by '\0' */
char *psz_value = strndup( (char*)&p_data[0], i_size );
EnsureUTF8( psz_name );
EnsureUTF8( psz_value );
#define IS(s) (!strcasecmp( psz_name, s ) )
if( IS( "Title" ) )
vlc_meta_SetTitle( p_meta, psz_value );
else if( IS( "Artist" ) )
vlc_meta_SetArtist( p_meta, psz_value );
else if( IS( "Album" ) )
vlc_meta_SetAlbum( p_meta, psz_value );
else if( IS( "Publisher" ) )
vlc_meta_SetPublisher( p_meta, psz_value );
else if( IS( "Track" ) )
{
char *p = strchr( psz_value, '/' );
if( p )
*p++ = '\0';
vlc_meta_SetTrackNum( p_meta, psz_value );
}
else if( IS( "Comment" ) )
vlc_meta_SetDescription( p_meta, psz_value );
else if( IS( "Copyright" ) )
vlc_meta_SetCopyright( p_meta, psz_value );
else if( IS( "Year" ) )
vlc_meta_SetDate( p_meta, psz_value );
else if( IS( "Genre" ) )
vlc_meta_SetGenre( p_meta, psz_value );
else if( IS( "Language" ) )
vlc_meta_SetLanguage( p_meta, psz_value );
else
vlc_meta_AddExtra( p_meta, psz_name, psz_value );
#undef IS
free( psz_value );
}
p_data += i_size;
i_data -= i_size;
i_entry--;
}
}
/*****************************************************************************
* Open: initializes ES structures
*****************************************************************************/
static int Open( vlc_object_t * p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys;
byte_t *p_peek;
int i_peek = 0;
vlc_bool_t b_big_endian = 0; /* Arbitrary initialisation */
/* Check if we are dealing with a WAV file */
if( stream_Peek( p_demux->s, &p_peek, 12 ) == 12 &&
!memcmp( p_peek, "RIFF", 4 ) && !memcmp( p_peek + 8, "WAVE", 4 ) )
{
int i_size;
/* Skip the wave header */
i_peek = 12 + 8;
while( stream_Peek( p_demux->s, &p_peek, i_peek ) == i_peek &&
memcmp( p_peek + i_peek - 8, "data", 4 ) )
{
i_peek += GetDWLE( p_peek + i_peek - 4 ) + 8;
}
/* TODO: should check wave format and sample_rate */
/* Some A52 wav files don't begin with a sync code so we do a more
* extensive search */
i_size = stream_Peek( p_demux->s, &p_peek, i_peek + A52_PACKET_SIZE * 2);
i_size -= (PCM_FRAME_SIZE + A52_MAX_HEADER_SIZE);
while( i_peek < i_size )
{
if( CheckSync( p_peek + i_peek, &b_big_endian ) != VLC_SUCCESS )
/* The data is stored in 16 bits words */
i_peek += 2;
else
{
/* Check following sync code */
if( CheckSync( p_peek + i_peek + PCM_FRAME_SIZE,
&b_big_endian ) != VLC_SUCCESS )
{
i_peek += 2;
continue;
}
break;
}
}
}
/* Have a peep at the show. */
if( stream_Peek( p_demux->s, &p_peek, i_peek + A52_MAX_HEADER_SIZE * 2 ) <
i_peek + A52_MAX_HEADER_SIZE * 2 )
{
/* Stream too short */
msg_Warn( p_demux, "cannot peek()" );
return VLC_EGENERIC;
}
if( CheckSync( p_peek + i_peek, &b_big_endian ) != VLC_SUCCESS )
{
if( strncmp( p_demux->psz_demux, "a52", 3 ) )
{
return VLC_EGENERIC;
}
/* User forced */
msg_Err( p_demux, "this doesn't look like a A52 audio stream, "
"continuing anyway" );
}
/* Fill p_demux fields */
p_demux->pf_demux = Demux;
p_demux->pf_control = Control;
p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
p_sys->b_start = VLC_TRUE;
p_sys->i_mux_rate = 0;
p_sys->b_big_endian = b_big_endian;
/*
* Load the A52 packetizer
*/
p_sys->p_packetizer = vlc_object_create( p_demux, VLC_OBJECT_DECODER );
p_sys->p_packetizer->pf_decode_audio = 0;
p_sys->p_packetizer->pf_decode_video = 0;
p_sys->p_packetizer->pf_decode_sub = 0;
p_sys->p_packetizer->pf_packetize = 0;
/* Initialization of decoder structure */
es_format_Init( &p_sys->p_packetizer->fmt_in, AUDIO_ES,
VLC_FOURCC( 'a', '5', '2', ' ' ) );
p_sys->p_packetizer->p_module =
module_Need( p_sys->p_packetizer, "packetizer", NULL, 0 );
if( !p_sys->p_packetizer->p_module )
{
msg_Err( p_demux, "cannot find A52 packetizer" );
return VLC_EGENERIC;
}
/* Create one program */
p_sys->p_es = es_out_Add( p_demux->out, &p_sys->p_packetizer->fmt_in );
return VLC_SUCCESS;
}
void vorbis_ParseComment( es_format_t *p_fmt, vlc_meta_t **pp_meta,
const uint8_t *p_data, int i_data,
int *i_attachments, input_attachment_t ***attachments,
int *i_cover_score, int *i_cover_idx,
int *i_seekpoint, seekpoint_t ***ppp_seekpoint,
float (* ppf_replay_gain)[AUDIO_REPLAY_GAIN_MAX],
float (* ppf_replay_peak)[AUDIO_REPLAY_GAIN_MAX] )
{
int n;
int i_comment;
if( i_data < 8 )
return;
n = GetDWLE(p_data); RM(4);
if( n < 0 || n > i_data )
return;
#if 0
if( n > 0 )
{
/* TODO report vendor string ? */
char *psz_vendor = psz_vendor = strndup( p_data, n );
free( psz_vendor );
}
#endif
RM(n);
if( i_data < 4 )
return;
i_comment = GetDWLE(p_data); RM(4);
if( i_comment <= 0 )
return;
/* */
vlc_meta_t *p_meta = *pp_meta;
if( !p_meta )
*pp_meta = p_meta = vlc_meta_New();
if( !p_meta )
return;
/* */
bool hasTitle = false;
bool hasArtist = false;
bool hasGenre = false;
bool hasCopyright = false;
bool hasAlbum = false;
bool hasTrackNum = false;
bool hasDescription = false;
bool hasRating = false;
bool hasDate = false;
bool hasLanguage = false;
bool hasPublisher = false;
bool hasEncodedBy = false;
bool hasTrackTotal = false;
chapters_array_t chapters_array = { 0, NULL };
for( ; i_comment > 0; i_comment-- )
{
char *psz_comment;
if( i_data < 4 )
break;
n = GetDWLE(p_data); RM(4);
if( n > i_data )
break;
if( n <= 0 )
continue;
psz_comment = strndup( (const char*)p_data, n );
RM(n);
EnsureUTF8( psz_comment );
#define IF_EXTRACT(txt,var) \
if( !strncasecmp(psz_comment, txt, strlen(txt)) ) \
{ \
const char *oldval = vlc_meta_Get( p_meta, vlc_meta_ ## var ); \
if( oldval && has##var) \
{ \
char * newval; \
if( asprintf( &newval, "%s,%s", oldval, &psz_comment[strlen(txt)] ) == -1 ) \
newval = NULL; \
vlc_meta_Set( p_meta, vlc_meta_ ## var, newval ); \
free( newval ); \
} \
else \
vlc_meta_Set( p_meta, vlc_meta_ ## var, &psz_comment[strlen(txt)] ); \
has##var = true; \
}
#define IF_EXTRACT_ONCE(txt,var) \
if( !strncasecmp(psz_comment, txt, strlen(txt)) && !has##var ) \
{ \
vlc_meta_Set( p_meta, vlc_meta_ ## var, &psz_comment[strlen(txt)] ); \
has##var = true; \
}
#define IF_EXTRACT_FMT(txt,var,fmt,target) \
IF_EXTRACT(txt,var)\
if( fmt && !strncasecmp(psz_comment, txt, strlen(txt)) )\
{\
if ( fmt->target ) free( fmt->target );\
fmt->target = strdup(&psz_comment[strlen(txt)]);\
}
IF_EXTRACT("TITLE=", Title )
else IF_EXTRACT("ARTIST=", Artist )
else IF_EXTRACT("GENRE=", Genre )
else IF_EXTRACT("COPYRIGHT=", Copyright )
else IF_EXTRACT("ALBUM=", Album )
else if( !hasTrackNum && !strncasecmp(psz_comment, "TRACKNUMBER=", strlen("TRACKNUMBER=" ) ) )
{
/* Yeah yeah, such a clever idea, let's put xx/xx inside TRACKNUMBER
* Oh, and let's not use TRACKTOTAL or TOTALTRACKS... */
short unsigned u_track, u_total;
if( sscanf( &psz_comment[strlen("TRACKNUMBER=")], "%hu/%hu", &u_track, &u_total ) == 2 )
{
char str[6];
snprintf(str, 6, "%u", u_track);
vlc_meta_Set( p_meta, vlc_meta_TrackNumber, str );
hasTrackNum = true;
snprintf(str, 6, "%u", u_total);
vlc_meta_Set( p_meta, vlc_meta_TrackTotal, str );
hasTrackTotal = true;
}
else
{
vlc_meta_Set( p_meta, vlc_meta_TrackNumber, &psz_comment[strlen("TRACKNUMBER=")] );
hasTrackNum = true;
}
}
else IF_EXTRACT_ONCE("TRACKTOTAL=", TrackTotal )
else IF_EXTRACT_ONCE("TOTALTRACKS=", TrackTotal )
else IF_EXTRACT("DESCRIPTION=", Description )
else IF_EXTRACT("COMMENT=", Description )
else IF_EXTRACT("COMMENTS=", Description )
else IF_EXTRACT("RATING=", Rating )
else IF_EXTRACT("DATE=", Date )
else IF_EXTRACT_FMT("LANGUAGE=", Language, p_fmt, psz_language )
else IF_EXTRACT("ORGANIZATION=", Publisher )
else IF_EXTRACT("ENCODER=", EncodedBy )
else if( !strncasecmp( psz_comment, "METADATA_BLOCK_PICTURE=", strlen("METADATA_BLOCK_PICTURE=")))
{
if( attachments == NULL )
continue;
uint8_t *p_picture;
size_t i_size = vlc_b64_decode_binary( &p_picture, &psz_comment[strlen("METADATA_BLOCK_PICTURE=")]);
input_attachment_t *p_attachment = ParseFlacPicture( p_picture,
i_size, *i_attachments, i_cover_score, i_cover_idx );
free( p_picture );
if( p_attachment )
{
TAB_APPEND_CAST( (input_attachment_t**),
*i_attachments, *attachments, p_attachment );
}
}
else if ( ppf_replay_gain && ppf_replay_peak && !strncmp(psz_comment, "REPLAYGAIN_", 11) )
{
char *p = strchr( psz_comment, '=' );
if (!p) continue;
if ( !strncasecmp(psz_comment, "REPLAYGAIN_TRACK_GAIN=", 22) )
{
(*ppf_replay_gain)[AUDIO_REPLAY_GAIN_TRACK] = us_atof( ++p );
}
else if ( !strncasecmp(psz_comment, "REPLAYGAIN_ALBUM_GAIN=", 22) )
{
(*ppf_replay_gain)[AUDIO_REPLAY_GAIN_ALBUM] = us_atof( ++p );
}
else if ( !strncasecmp(psz_comment, "REPLAYGAIN_ALBUM_PEAK=", 22) )
{
(*ppf_replay_peak)[AUDIO_REPLAY_GAIN_ALBUM] = us_atof( ++p );
}
else if ( !strncasecmp(psz_comment, "REPLAYGAIN_TRACK_PEAK=", 22) )
{
(*ppf_replay_peak)[AUDIO_REPLAY_GAIN_TRACK] = us_atof( ++p );
}
}
else if( !strncasecmp(psz_comment, "CHAPTER", 7) )
{
unsigned int i_chapt;
seekpoint_t *p_seekpoint = NULL;
for( int i = 0; psz_comment[i] && psz_comment[i] != '='; i++ )
if( psz_comment[i] >= 'a' && psz_comment[i] <= 'z' )
psz_comment[i] -= 'a' - 'A';
if( strstr( psz_comment, "NAME=" ) &&
sscanf( psz_comment, "CHAPTER%uNAME=", &i_chapt ) == 1 )
{
char *p = strchr( psz_comment, '=' );
p_seekpoint = getChapterEntry( i_chapt, &chapters_array );
if ( !p || ! p_seekpoint ) continue;
if ( ! p_seekpoint->psz_name )
p_seekpoint->psz_name = strdup( ++p );
}
else if( sscanf( psz_comment, "CHAPTER%u=", &i_chapt ) == 1 )
{
unsigned int h, m, s, ms;
char *p = strchr( psz_comment, '=' );
if( p && sscanf( ++p, "%u:%u:%u.%u", &h, &m, &s, &ms ) == 4 )
{
p_seekpoint = getChapterEntry( i_chapt, &chapters_array );
if ( ! p_seekpoint ) continue;
p_seekpoint->i_time_offset =
(((int64_t)h * 3600 + (int64_t)m * 60 + (int64_t)s) * 1000 + ms) * 1000;
}
}
}
else if( strchr( psz_comment, '=' ) )
{
/* generic (PERFORMER/LICENSE/ORGANIZATION/LOCATION/CONTACT/ISRC,
* undocumented tags and replay gain ) */
char *p = strchr( psz_comment, '=' );
*p++ = '\0';
for( int i = 0; psz_comment[i]; i++ )
if( psz_comment[i] >= 'a' && psz_comment[i] <= 'z' )
psz_comment[i] -= 'a' - 'A';
vlc_meta_AddExtra( p_meta, psz_comment, p );
}
#undef IF_EXTRACT
free( psz_comment );
}
if( fseek( p_file, sizeof(index_record) * i_frame, SEEK_SET ) != 0 )
return false;
if( fread( &index_record, sizeof(index_record), 1, p_file ) < 1 )
return false;
/* VDR usually (only?) runs on little endian machines, but VLC has a
* broader audience. See recording.* in VDR source for data layout. */
if( b_ts )
{
uint64_t i_index_entry = GetQWLE( &index_record );
*pi_offset = i_index_entry & UINT64_C(0xFFFFFFFFFF);
*pi_file_num = i_index_entry >> 48;
}
else
{
*pi_offset = GetDWLE( &index_record );
*pi_file_num = index_record[5];
}
return true;
}
/*****************************************************************************
* Convert time stamp from file to frame number
*****************************************************************************/
static int64_t ParseFrameNumber( const char *psz_line, float fps )
{
unsigned h, m, s, f, n;
/* hour:min:sec.frame (frame is optional) */
n = sscanf( psz_line, "%u:%u:%u.%u", &h, &m, &s, &f );
static int SkipFile(stream_t *s, int *count, rar_file_t ***file,
const rar_block_t *hdr, const char *volume_mrl)
{
const uint8_t *peek;
int min_size = 7+21;
if (hdr->flags & RAR_BLOCK_FILE_HAS_HIGH)
min_size += 8;
if (hdr->size < (unsigned)min_size)
return VLC_EGENERIC;
if (stream_Peek(s, &peek, min_size) < min_size)
return VLC_EGENERIC;
/* */
uint32_t file_size_low = GetDWLE(&peek[7+4]);
uint8_t method = peek[7+18];
uint16_t name_size = GetWLE(&peek[7+19]);
uint32_t file_size_high = 0;
if (hdr->flags & RAR_BLOCK_FILE_HAS_HIGH)
file_size_high = GetDWLE(&peek[7+25]);
const uint64_t file_size = ((uint64_t)file_size_high << 32) | file_size_low;
char *name = calloc(1, name_size + 1);
if (!name)
return VLC_EGENERIC;
const int name_offset = (hdr->flags & RAR_BLOCK_FILE_HAS_HIGH) ? (7+33) : (7+25);
if (name_offset + name_size <= hdr->size) {
const int max_size = name_offset + name_size;
if (stream_Peek(s, &peek, max_size) < max_size) {
free(name);
return VLC_EGENERIC;
}
memcpy(name, &peek[name_offset], name_size);
}
rar_file_t *current = NULL;
if (method != 0x30) {
msg_Warn(s, "Ignoring compressed file %s (method=0x%2.2x)", name, method);
goto exit;
}
/* */
if( *count > 0 )
current = (*file)[*count - 1];
if (current &&
(current->is_complete ||
strcmp(current->name, name) ||
(hdr->flags & RAR_BLOCK_FILE_HAS_PREVIOUS) == 0))
current = NULL;
if (!current) {
if (hdr->flags & RAR_BLOCK_FILE_HAS_PREVIOUS)
goto exit;
current = malloc(sizeof(*current));
if (!current)
goto exit;
TAB_APPEND(*count, *file, current);
current->name = name;
current->size = file_size;
current->is_complete = false;
current->real_size = 0;
TAB_INIT(current->chunk_count, current->chunk);
name = NULL;
}
/* Append chunks */
rar_file_chunk_t *chunk = malloc(sizeof(*chunk));
if (chunk) {
chunk->mrl = strdup(volume_mrl);
chunk->offset = stream_Tell(s) + hdr->size;
chunk->size = hdr->add_size;
chunk->cummulated_size = 0;
if (current->chunk_count > 0) {
rar_file_chunk_t *previous = current->chunk[current->chunk_count-1];
chunk->cummulated_size += previous->cummulated_size +
previous->size;
}
TAB_APPEND(current->chunk_count, current->chunk, chunk);
current->real_size += hdr->add_size;
}
if ((hdr->flags & RAR_BLOCK_FILE_HAS_NEXT) == 0)
current->is_complete = true;
exit:
/* */
free(name);
/* We stop on the first non empty file if we cannot seek */
if (current) {
bool can_seek = false;
stream_Control(s, STREAM_CAN_SEEK, &can_seek);
if (!can_seek && current->size > 0)
return VLC_EGENERIC;
}
if (SkipBlock(s, hdr))
return VLC_EGENERIC;
return VLC_SUCCESS;
}
/*****************************************************************************
* Open: check file and initializes structures
*****************************************************************************/
static int Open (vlc_object_t * p_this)
{
demux_t *p_demux = (demux_t *)p_this;
stream_t *stream = p_demux->s;
demux_sys_t *p_sys;
const uint8_t *peek;
unsigned tracks, ppqn;
bool multitrack;
/* (Try to) parse the SMF header */
/* Header chunk always has 6 bytes payload */
if (stream_Peek (stream, &peek, 14) < 14)
return VLC_EGENERIC;
/* Skip RIFF MIDI header if present */
if (!memcmp (peek, "RIFF", 4) && !memcmp (peek + 8, "RMID", 4))
{
uint32_t riff_len = GetDWLE (peek + 4);
msg_Dbg (p_this, "detected RIFF MIDI file (%u bytes)",
(unsigned)riff_len);
if ((stream_Read (stream, NULL, 12) < 12))
return VLC_EGENERIC;
/* Look for the RIFF data chunk */
for (;;)
{
char chnk_hdr[8];
uint32_t chnk_len;
if ((riff_len < 8)
|| (stream_Read (stream, chnk_hdr, 8) < 8))
return VLC_EGENERIC;
riff_len -= 8;
chnk_len = GetDWLE (chnk_hdr + 4);
if (riff_len < chnk_len)
return VLC_EGENERIC;
riff_len -= chnk_len;
if (!memcmp (chnk_hdr, "data", 4))
break; /* found! */
if (stream_Read (stream, NULL, chnk_len) < (ssize_t)chnk_len)
return VLC_EGENERIC;
}
/* Read real SMF header. Assume RIFF data chunk length is proper. */
if (stream_Peek (stream, &peek, 14) < 14)
return VLC_EGENERIC;
}
if (memcmp (peek, "MThd\x00\x00\x00\x06", 8))
return VLC_EGENERIC;
peek += 8;
/* First word: SMF type */
switch (GetWBE (peek))
{
case 0:
multitrack = false;
break;
case 1:
multitrack = true;
break;
default:
/* We don't implement SMF2 (as do many) */
msg_Err (p_this, "unsupported SMF file type %u", GetWBE (peek));
return VLC_EGENERIC;
}
peek += 2;
/* Second word: number of tracks */
tracks = GetWBE (peek);
peek += 2;
if (!multitrack && (tracks != 1))
{
msg_Err (p_this, "invalid SMF type 0 file");
return VLC_EGENERIC;
}
msg_Dbg (p_this, "detected Standard MIDI File (type %u) with %u track(s)",
multitrack, tracks);
/* Third/last word: timing */
ppqn = GetWBE (peek);
if (ppqn & 0x8000)
{
/* FIXME */
msg_Err (p_this, "SMPTE timestamps not implemented");
return VLC_EGENERIC;
}
else
{
msg_Dbg (p_this, " %u pulses per quarter note", ppqn);
}
p_sys = malloc (sizeof (*p_sys) + (sizeof (mtrk_t) * tracks));
if (p_sys == NULL)
return VLC_ENOMEM;
/* We've had a valid SMF header - now skip it*/
if (stream_Read (stream, NULL, 14) < 14)
goto error;
p_demux->pf_demux = Demux;
p_demux->pf_control = Control;
p_demux->p_sys = p_sys;
/* Default SMF tempo is 120BPM, i.e. half a second per quarter note */
date_Init (&p_sys->pts, ppqn * 2, 1);
date_Set (&p_sys->pts, 0);
p_sys->pulse = 0;
p_sys->ppqn = ppqn;
p_sys->trackc = tracks;
/* Prefetch track offsets */
for (unsigned i = 0; i < tracks; i++)
{
uint8_t head[8];
if (i > 0)
{
/* Seeking screws streaming up, but there is no way around this,
* as SMF1 tracks are performed simultaneously.
* Not a big deal as SMF1 are usually only a few kbytes anyway. */
if (stream_Seek (stream, p_sys->trackv[i-1].end))
{
msg_Err (p_this, "cannot build SMF index (corrupted file?)");
goto error;
}
}
for (;;)
{
if (stream_Read (stream, head, 8) < 8)
{
/* FIXME: don't give up if we have at least one valid track */
msg_Err (p_this, "incomplete SMF chunk, file is corrupted");
goto error;
}
if (memcmp (head, "MTrk", 4) == 0)
break;
msg_Dbg (p_this, "skipping unknown SMF chunk");
stream_Read (stream, NULL, GetDWBE (head + 4));
}
p_sys->trackv[i].offset = stream_Tell (stream);
p_sys->trackv[i].end = p_sys->trackv[i].offset + GetDWBE (head + 4);
p_sys->trackv[i].next = 0;
ReadDeltaTime (stream, p_sys->trackv + i);
p_sys->trackv[i].running_event = 0xF6;
/* Why 0xF6 (Tuning Calibration)?
* Because it has zero bytes of data, so the parser will detect the
* error if the first event uses running status. */
}
es_format_t fmt;
es_format_Init (&fmt, AUDIO_ES, VLC_CODEC_MIDI);
fmt.audio.i_channels = 2;
fmt.audio.i_rate = 44100; /* dummy value */
p_sys->es = es_out_Add (p_demux->out, &fmt);
return VLC_SUCCESS;
error:
free (p_sys);
return VLC_EGENERIC;
}
