/**
* Common initialization for decoder and packetizer
*/
static int OpenCommon( decoder_t *p_dec, bool b_packetizer )
{
const vlc_chroma_description_t *dsc =
vlc_fourcc_GetChromaDescription( p_dec->fmt_in.i_codec );
if( dsc == NULL || dsc->plane_count == 0 )
return VLC_EGENERIC;
if( p_dec->fmt_in.video.i_width <= 0 || p_dec->fmt_in.video.i_height == 0 )
{
msg_Err( p_dec, "invalid display size %dx%d",
p_dec->fmt_in.video.i_width, p_dec->fmt_in.video.i_height );
return VLC_EGENERIC;
}
/* Allocate the memory needed to store the decoder's structure */
decoder_sys_t *p_sys = calloc(1, sizeof(*p_sys));
if( unlikely(p_sys == NULL) )
return VLC_ENOMEM;
if( !p_dec->fmt_in.video.i_visible_width )
p_dec->fmt_in.video.i_visible_width = p_dec->fmt_in.video.i_width;
if( !p_dec->fmt_in.video.i_visible_height )
p_dec->fmt_in.video.i_visible_height = p_dec->fmt_in.video.i_height;
if ( !b_packetizer )
es_format_Copy( &p_dec->fmt_out, &p_dec->fmt_in );
date_Init( &p_sys->pts, p_dec->fmt_out.video.i_frame_rate,
p_dec->fmt_out.video.i_frame_rate_base );
if( p_dec->fmt_out.video.i_frame_rate == 0 ||
p_dec->fmt_out.video.i_frame_rate_base == 0)
{
msg_Warn( p_dec, "invalid frame rate %d/%d, using 25 fps instead",
p_dec->fmt_out.video.i_frame_rate,
p_dec->fmt_out.video.i_frame_rate_base);
date_Init( &p_sys->pts, 25, 1 );
}
for( unsigned i = 0; i < dsc->plane_count; i++ )
{
unsigned pitch = p_dec->fmt_in.video.i_width * dsc->pixel_size
* dsc->p[i].w.num / dsc->p[i].w.den;
unsigned lines = p_dec->fmt_in.video.i_height
* dsc->p[i].h.num / dsc->p[i].h.den;
p_sys->pitches[i] = pitch;
p_sys->lines[i] = lines;
p_sys->size += pitch * lines;
}
p_dec->p_sys = p_sys;
return VLC_SUCCESS;
}
/*****************************************************************************
* InitAudioDec: initialize audio decoder
*****************************************************************************
* The avcodec codec will be opened, some memory allocated.
*****************************************************************************/
int InitAudioDec( decoder_t *p_dec, AVCodecContext *p_context,
AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
{
decoder_sys_t *p_sys;
/* Allocate the memory needed to store the decoder's structure */
if( ( p_dec->p_sys = p_sys = malloc(sizeof(*p_sys)) ) == NULL )
{
return VLC_ENOMEM;
}
p_codec->type = AVMEDIA_TYPE_AUDIO;
p_context->codec_type = AVMEDIA_TYPE_AUDIO;
p_context->codec_id = i_codec_id;
p_context->get_buffer = GetAudioBuf;
p_sys->p_context = p_context;
p_sys->p_codec = p_codec;
p_sys->i_codec_id = i_codec_id;
p_sys->psz_namecodec = psz_namecodec;
p_sys->b_delayed_open = true;
// Initialize decoder extradata
InitDecoderConfig( p_dec, p_context);
/* ***** Open the codec ***** */
if( ffmpeg_OpenCodec( p_dec ) < 0 )
{
msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
free( p_sys->p_context->extradata );
free( p_sys );
return VLC_EGENERIC;
}
p_sys->i_reject_count = 0;
p_sys->b_extract = false;
p_sys->i_previous_channels = 0;
p_sys->i_previous_layout = 0;
/* */
p_dec->fmt_out.i_cat = AUDIO_ES;
/* Try to set as much information as possible but do not trust it */
SetupOutputFormat( p_dec, false );
date_Set( &p_sys->end_date, 0 );
if( p_dec->fmt_out.audio.i_rate )
date_Init( &p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1 );
else if( p_dec->fmt_in.audio.i_rate )
date_Init( &p_sys->end_date, p_dec->fmt_in.audio.i_rate, 1 );
return VLC_SUCCESS;
}
static int SeekSet0 (demux_t *demux)
{
stream_t *stream = demux->s;
demux_sys_t *sys = demux->p_sys;
/* Default SMF tempo is 120BPM, i.e. half a second per quarter note */
date_Init (&sys->pts, sys->ppqn * 2, 1);
date_Set (&sys->pts, VLC_TS_0);
sys->pulse = 0;
sys->tick = VLC_TS_0;
for (unsigned i = 0; i < sys->trackc; i++)
{
mtrk_t *tr = sys->trackv + i;
tr->offset = 0;
tr->next = 0;
/* 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. */
tr->running_event = 0xF6;
if (stream_Seek (stream, tr->start)
|| ReadDeltaTime (stream, tr))
{
msg_Err (demux, "fatal parsing error");
return -1;
}
}
return 0;
}
/*****************************************************************************
* 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;
/* Identify cdg file by extension, as there is no simple way to
* detect it */
if( !demux_IsPathExtension( p_demux, ".cdg" ) && !demux_IsForced( p_demux, "cdg" ) )
return VLC_EGENERIC;
/* CDG file size has to be multiple of CDG_FRAME_SIZE (it works even
* if size is unknown ie 0) */
// if( (stream_Size( p_demux->s ) % CDG_FRAME_SIZE) != 0 )
// {
// msg_Err( p_demux, "Reject CDG file based on its size" );
// return VLC_EGENERIC;
// }
p_demux->pf_demux = Demux;
p_demux->pf_control = Control;
p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
/* */
es_format_Init( &p_sys->fmt, VIDEO_ES, VLC_CODEC_CDG );
p_sys->fmt.video.i_width = 300-2*6;
p_sys->fmt.video.i_height = 216-2*12 ;
p_sys->p_es = es_out_Add( p_demux->out, &p_sys->fmt );
/* There is CDG_FRAME_RATE frames per second */
date_Init( &p_sys->pts, CDG_FRAME_RATE, 1 );
date_Set( &p_sys->pts, 1 );
return VLC_SUCCESS;
}
static int Open (vlc_object_t *obj)
{
demux_t *demux = (demux_t *)obj;
demux_sys_t *sys = vlc_malloc(obj, sizeof (*sys));
if (unlikely(sys == NULL))
return VLC_ENOMEM;
es_format_t fmt;
es_format_Init (&fmt, SPU_ES, VLC_CODEC_ITU_T140);
sys->es = es_out_Add (demux->out, &fmt);
unsigned num, den;
if (var_InheritURational (demux, &num, &den, "timecode-fps")
|| !num || !den)
{
msg_Err (demux, "invalid frame rate");
return VLC_EGENERIC;
}
date_Init (&sys->date, num, den);
date_Set (&sys->date, VLC_TS_0);
sys->next_time = VLC_TS_INVALID;
demux->p_sys = sys;
demux->pf_demux = Demux;
demux->pf_control = Control;
return VLC_SUCCESS;
}
/**
* Initializes the members of a FIFO.
*/
static void aout_FifoInit( aout_fifo_t *p_fifo, uint32_t i_rate )
{
assert( i_rate != 0);
p_fifo->p_first = NULL;
p_fifo->pp_last = &p_fifo->p_first;
date_Init( &p_fifo->end_date, i_rate, 1 );
date_Set( &p_fifo->end_date, VLC_TS_INVALID );
}
/*****************************************************************************
* InitAudioDec: initialize audio decoder
*****************************************************************************
* The avcodec codec will be opened, some memory allocated.
*****************************************************************************/
int InitAudioDec( decoder_t *p_dec, AVCodecContext *p_context,
const AVCodec *p_codec )
{
decoder_sys_t *p_sys;
/* Allocate the memory needed to store the decoder's structure */
if( ( p_dec->p_sys = p_sys = malloc(sizeof(*p_sys)) ) == NULL )
{
return VLC_ENOMEM;
}
p_context->refcounted_frames = true;
p_sys->p_context = p_context;
p_sys->p_codec = p_codec;
p_sys->b_delayed_open = true;
// Initialize decoder extradata
InitDecoderConfig( p_dec, p_context);
/* ***** Open the codec ***** */
if( OpenAudioCodec( p_dec ) < 0 )
{
free( p_sys );
return VLC_EGENERIC;
}
p_sys->i_reject_count = 0;
p_sys->b_extract = false;
p_sys->i_previous_channels = 0;
p_sys->i_previous_layout = 0;
/* */
p_dec->fmt_out.i_cat = AUDIO_ES;
/* Try to set as much information as possible but do not trust it */
SetupOutputFormat( p_dec, false );
date_Set( &p_sys->end_date, VLC_TS_INVALID );
if( p_dec->fmt_out.audio.i_rate )
date_Init( &p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1 );
else if( p_dec->fmt_in.audio.i_rate )
date_Init( &p_sys->end_date, p_dec->fmt_in.audio.i_rate, 1 );
p_dec->pf_decode_audio = DecodeAudio;
p_dec->pf_flush = Flush;
return VLC_SUCCESS;
}
static int Open (vlc_object_t *p_this)
{
decoder_t *p_dec = (decoder_t *)p_this;
decoder_sys_t *p_sys;
if (p_dec->fmt_in.i_codec != VLC_CODEC_MIDI)
return VLC_EGENERIC;
char *font_path = var_CreateGetNonEmptyString (p_this, "soundfont");
if (font_path == NULL)
{
msg_Err (p_this, "sound fonts file required for synthesis");
return VLC_EGENERIC;
}
p_dec->pf_decode_audio = DecodeBlock;
p_sys = p_dec->p_sys = malloc (sizeof (*p_sys));
if (p_sys == NULL)
{
free (font_path);
return VLC_ENOMEM;
}
p_sys->settings = new_fluid_settings ();
p_sys->synth = new_fluid_synth (p_sys->settings);
/* FIXME: I bet this is not thread-safe */
p_sys->soundfont = fluid_synth_sfload (p_sys->synth, font_path, 1);
free (font_path);
if (p_sys->soundfont == -1)
{
msg_Err (p_this, "cannot load sound fonts file");
Close (p_this);
return VLC_EGENERIC;
}
p_dec->fmt_out.i_cat = AUDIO_ES;
p_dec->fmt_out.audio.i_rate = 44100;
p_dec->fmt_out.audio.i_channels = 2;
p_dec->fmt_out.audio.i_original_channels =
p_dec->fmt_out.audio.i_physical_channels =
AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
if (HAVE_FPU)
{
p_dec->fmt_out.i_codec = VLC_CODEC_FL32;
p_dec->fmt_out.audio.i_bitspersample = 32;
p_sys->fixed = false;
}
else
{
p_dec->fmt_out.i_codec = VLC_CODEC_S16N;
p_dec->fmt_out.audio.i_bitspersample = 16;
p_sys->fixed = true;
}
date_Init (&p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1);
date_Set (&p_sys->end_date, 0);
return VLC_SUCCESS;
}
bool transcode_audio_add( sout_stream_t *p_stream, es_format_t *p_fmt,
sout_stream_id_t *id )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
msg_Dbg( p_stream,
"creating audio transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
(char*)&p_fmt->i_codec, (char*)&p_sys->i_acodec );
/* Complete destination format */
id->p_encoder->fmt_out.i_codec = p_sys->i_acodec;
id->p_encoder->fmt_out.audio.i_rate = p_sys->i_sample_rate > 0 ?
p_sys->i_sample_rate : p_fmt->audio.i_rate;
id->p_encoder->fmt_out.i_bitrate = p_sys->i_abitrate;
id->p_encoder->fmt_out.audio.i_bitspersample =
p_fmt->audio.i_bitspersample;
id->p_encoder->fmt_out.audio.i_channels = p_sys->i_channels > 0 ?
p_sys->i_channels : p_fmt->audio.i_channels;
/* Sanity check for audio channels */
id->p_encoder->fmt_out.audio.i_channels =
__MIN( id->p_encoder->fmt_out.audio.i_channels,
id->p_decoder->fmt_in.audio.i_channels );
id->p_encoder->fmt_out.audio.i_original_channels =
id->p_decoder->fmt_in.audio.i_physical_channels;
if( id->p_decoder->fmt_in.audio.i_channels ==
id->p_encoder->fmt_out.audio.i_channels )
{
id->p_encoder->fmt_out.audio.i_physical_channels =
id->p_decoder->fmt_in.audio.i_physical_channels;
}
else
{
id->p_encoder->fmt_out.audio.i_physical_channels =
pi_channels_maps[id->p_encoder->fmt_out.audio.i_channels];
}
/* Build decoder -> filter -> encoder chain */
if( transcode_audio_new( p_stream, id ) )
{
msg_Err( p_stream, "cannot create audio chain" );
return false;
}
/* Open output stream */
id->id = sout_StreamIdAdd( p_stream->p_next, &id->p_encoder->fmt_out );
id->b_transcode = true;
if( !id->id )
{
transcode_audio_close( id );
return false;
}
date_Init( &id->interpolated_pts, p_fmt->audio.i_rate, 1 );
return true;
}
/*****************************************************************************
* aout_FifoInit : initialize the members of a FIFO
*****************************************************************************/
void aout_FifoInit( vlc_object_t *obj, aout_fifo_t * p_fifo, uint32_t i_rate )
{
if( unlikely(i_rate == 0) )
msg_Err( obj, "initialising fifo with zero divider" );
p_fifo->p_first = NULL;
p_fifo->pp_last = &p_fifo->p_first;
date_Init( &p_fifo->end_date, i_rate, 1 );
}
/*****************************************************************************
* aout_FifoInit : initialize the members of a FIFO
*****************************************************************************/
void aout_FifoInit( aout_instance_t * p_aout, aout_fifo_t * p_fifo,
uint32_t i_rate )
{
AOUT_ASSERT_FIFO_LOCKED;
if( i_rate == 0 )
{
msg_Err( p_aout, "initialising fifo with zero divider" );
}
p_fifo->p_first = NULL;
p_fifo->pp_last = &p_fifo->p_first;
date_Init( &p_fifo->end_date, i_rate, 1 );
}
/*****************************************************************************
* Open:
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t*)p_this;
decoder_sys_t *p_sys;
if( p_dec->fmt_in.i_codec != VLC_CODEC_MJPG )
return VLC_EGENERIC;
p_dec->p_sys = p_sys = malloc( sizeof( decoder_sys_t ) );
if( !p_dec->p_sys )
return VLC_ENOMEM;
p_sys->i_next_block_flags = 0;
if( p_dec->fmt_in.video.i_frame_rate &&
p_dec->fmt_in.video.i_frame_rate_base )
{
date_Init( &p_sys->date, p_dec->fmt_in.video.i_frame_rate,
p_dec->fmt_in.video.i_frame_rate_base );
}
else
date_Init( &p_sys->date, 30000, 1001 );
es_format_Copy( &p_dec->fmt_out, &p_dec->fmt_in );
/* Misc init */
packetizer_Init( &p_sys->packetizer,
p_mjpg_startcode, sizeof(p_mjpg_startcode), startcode_Find,
NULL, 0, 295,
PacketizeReset, PacketizeParse, PacketizeValidate, p_dec );
p_dec->pf_packetize = Packetize;
p_dec->pf_flush = PacketizeFlush;
p_dec->pf_get_cc = NULL;
return VLC_SUCCESS;
}
static int UpdateAudioFormat( decoder_t *p_dec )
{
int i_err;
decoder_sys_t *p_sys = p_dec->p_sys;
struct mpg123_frameinfo frame_info;
/* Get details about the stream */
i_err = mpg123_info( p_sys->p_handle, &frame_info );
if( i_err != MPG123_OK )
{
msg_Err( p_dec, "mpg123_info failed: %s",
mpg123_plain_strerror( i_err ) );
return VLC_EGENERIC;
}
p_dec->fmt_out.i_bitrate = frame_info.bitrate * 1000;
switch( frame_info.mode )
{
case MPG123_M_DUAL:
p_dec->fmt_out.audio.i_chan_mode = AOUT_CHANMODE_DUALMONO;
/* fall through */
case MPG123_M_STEREO:
case MPG123_M_JOINT:
p_dec->fmt_out.audio.i_physical_channels =
AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
break;
case MPG123_M_MONO:
p_dec->fmt_out.audio.i_physical_channels = AOUT_CHAN_CENTER;
break;
default:
return VLC_EGENERIC;
}
aout_FormatPrepare( &p_dec->fmt_out.audio );
/* Date management */
if( p_dec->fmt_out.audio.i_rate != frame_info.rate )
{
p_dec->fmt_out.audio.i_rate = frame_info.rate;
date_Init( &p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1 );
date_Set( &p_sys->end_date, 0 );
}
return decoder_UpdateAudioFormat( p_dec );
}
/*****************************************************************************
* GetOutBuffer:
*****************************************************************************/
static uint8_t *GetOutBuffer( decoder_t *p_dec, block_t **pp_out_buffer )
{
decoder_sys_t *p_sys = p_dec->p_sys;
uint8_t *p_buf;
if( p_dec->fmt_out.audio.i_rate != p_sys->i_rate )
{
msg_Info( p_dec, "DTS channels:%d samplerate:%d bitrate:%d",
p_sys->i_channels, p_sys->i_rate, p_sys->i_bit_rate );
date_Init( &p_sys->end_date, p_sys->i_rate, 1 );
date_Set( &p_sys->end_date, p_sys->i_pts );
}
p_dec->fmt_out.audio.i_rate = p_sys->i_rate;
p_dec->fmt_out.audio.i_channels = p_sys->i_channels;
/* Hack for DTS S/PDIF filter which needs to pad the DTS frames */
p_dec->fmt_out.audio.i_bytes_per_frame =
__MAX( p_sys->i_frame_size, p_sys->i_frame_length * 4 );
p_dec->fmt_out.audio.i_frame_length = p_sys->i_frame_length;
p_dec->fmt_out.audio.i_original_channels = p_sys->i_channels_conf;
p_dec->fmt_out.audio.i_physical_channels =
p_sys->i_channels_conf & AOUT_CHAN_PHYSMASK;
p_dec->fmt_out.i_bitrate = p_sys->i_bit_rate;
if( p_sys->b_packetizer )
{
block_t *p_sout_buffer = GetSoutBuffer( p_dec );
p_buf = p_sout_buffer ? p_sout_buffer->p_buffer : NULL;
*pp_out_buffer = p_sout_buffer;
}
else
{
block_t *p_aout_buffer = GetAoutBuffer( p_dec );
p_buf = p_aout_buffer ? p_aout_buffer->p_buffer : NULL;
*pp_out_buffer = p_aout_buffer;
}
return p_buf;
}
/*****************************************************************************
* GetOutBuffer:
*****************************************************************************/
static uint8_t *GetOutBuffer( decoder_t *p_dec, block_t **pp_out_buffer )
{
decoder_sys_t *p_sys = p_dec->p_sys;
uint8_t *p_buf;
if( p_dec->fmt_out.audio.i_rate != p_sys->frame.i_rate )
{
msg_Dbg( p_dec, "A/52 channels:%d samplerate:%d bitrate:%d",
p_sys->frame.i_channels, p_sys->frame.i_rate, p_sys->frame.i_bitrate );
date_Init( &p_sys->end_date, p_sys->frame.i_rate, 1 );
date_Set( &p_sys->end_date, p_sys->i_pts );
}
p_dec->fmt_out.audio.i_rate = p_sys->frame.i_rate;
p_dec->fmt_out.audio.i_channels = p_sys->frame.i_channels;
if( p_dec->fmt_out.audio.i_bytes_per_frame < p_sys->frame.i_size )
p_dec->fmt_out.audio.i_bytes_per_frame = p_sys->frame.i_size;
p_dec->fmt_out.audio.i_frame_length = p_sys->frame.i_samples;
p_dec->fmt_out.audio.i_original_channels = p_sys->frame.i_channels_conf;
p_dec->fmt_out.audio.i_physical_channels =
p_sys->frame.i_channels_conf & AOUT_CHAN_PHYSMASK;
p_dec->fmt_out.i_bitrate = p_sys->frame.i_bitrate;
if( p_sys->b_packetizer )
{
block_t *p_sout_buffer = GetSoutBuffer( p_dec );
p_buf = p_sout_buffer ? p_sout_buffer->p_buffer : NULL;
*pp_out_buffer = p_sout_buffer;
}
else
{
aout_buffer_t *p_aout_buffer = GetAoutBuffer( p_dec );
p_buf = p_aout_buffer ? p_aout_buffer->p_buffer : NULL;
*pp_out_buffer = p_aout_buffer;
}
return p_buf;
}
static block_t *GetOutBuffer( decoder_t *p_dec )
{
decoder_sys_t *p_sys = p_dec->p_sys;
if( !p_sys->b_date_set
|| p_dec->fmt_out.audio.i_rate != p_sys->dts.i_rate )
{
msg_Dbg( p_dec, "DTS samplerate:%d bitrate:%d",
p_sys->dts.i_rate, p_sys->dts.i_bitrate );
date_Init( &p_sys->end_date, p_sys->dts.i_rate, 1 );
date_Set( &p_sys->end_date, p_sys->i_pts );
p_sys->b_date_set = true;
}
p_dec->fmt_out.audio.i_rate = p_sys->dts.i_rate;
if( p_dec->fmt_out.audio.i_bytes_per_frame < p_sys->dts.i_frame_size )
p_dec->fmt_out.audio.i_bytes_per_frame = p_sys->dts.i_frame_size;
p_dec->fmt_out.audio.i_frame_length = p_sys->dts.i_frame_length;
p_dec->fmt_out.audio.i_original_channels = p_sys->dts.i_original_channels;
p_dec->fmt_out.audio.i_physical_channels =
p_sys->dts.i_original_channels & AOUT_CHAN_PHYSMASK;
p_dec->fmt_out.audio.i_channels =
popcount( p_dec->fmt_out.audio.i_physical_channels );
p_dec->fmt_out.i_bitrate = p_sys->dts.i_bitrate;
block_t *p_block = block_Alloc( p_sys->i_input_size );
if( p_block == NULL )
return NULL;
p_block->i_nb_samples = p_sys->dts.i_frame_length;
p_block->i_pts = p_block->i_dts = date_Get( &p_sys->end_date );
p_block->i_length =
date_Increment( &p_sys->end_date, p_block->i_nb_samples ) - p_block->i_pts;
return p_block;
}
static block_t *GetOutBuffer( decoder_t *p_dec )
{
decoder_sys_t *p_sys = p_dec->p_sys;
if( !p_sys->b_date_set
|| p_dec->fmt_out.audio.i_rate != p_sys->frame.i_rate )
{
msg_Dbg( p_dec, "A/52 channels:%d samplerate:%d bitrate:%d",
p_sys->frame.i_channels, p_sys->frame.i_rate, p_sys->frame.i_bitrate );
date_Init( &p_sys->end_date, p_sys->frame.i_rate, 1 );
date_Set( &p_sys->end_date, p_sys->i_pts );
p_sys->b_date_set = true;
}
p_dec->fmt_out.audio.i_rate = p_sys->frame.i_rate;
p_dec->fmt_out.audio.i_channels = p_sys->frame.i_channels;
if( p_dec->fmt_out.audio.i_bytes_per_frame < p_sys->frame.i_size )
p_dec->fmt_out.audio.i_bytes_per_frame = p_sys->frame.i_size;
p_dec->fmt_out.audio.i_frame_length = p_sys->frame.i_samples;
p_dec->fmt_out.audio.i_chan_mode = p_sys->frame.i_chan_mode;
p_dec->fmt_out.audio.i_physical_channels = p_sys->frame.i_channels_conf;
p_dec->fmt_out.i_bitrate = p_sys->frame.i_bitrate;
block_t *p_block = block_Alloc( p_sys->frame.i_size );
if( p_block == NULL )
return NULL;
p_block->i_nb_samples = p_sys->frame.i_samples;
p_block->i_pts = p_block->i_dts = date_Get( &p_sys->end_date );
p_block->i_length =
date_Increment( &p_sys->end_date, p_block->i_nb_samples ) - p_block->i_pts;
return p_block;
}
static int Open(vlc_object_t *object)
{
demux_t *demux = (demux_t*)object;
/* Detect the image type */
const image_format_t *img;
const uint8_t *peek;
int peek_size = 0;
for (int i = 0; ; i++) {
img = &formats[i];
if (!img->codec)
return VLC_EGENERIC;
if (img->detect) {
if (img->detect(demux->s))
break;
} else {
if (peek_size < img->marker_size)
peek_size = stream_Peek(demux->s, &peek, img->marker_size);
if (peek_size >= img->marker_size &&
!memcmp(peek, img->marker, img->marker_size))
break;
}
}
msg_Dbg(demux, "Detected image: %s",
vlc_fourcc_GetDescription(VIDEO_ES, img->codec));
if( img->codec == VLC_CODEC_MXPEG )
{
return VLC_EGENERIC; //let avformat demux this file
}
/* Load and if selected decode */
es_format_t fmt;
es_format_Init(&fmt, VIDEO_ES, img->codec);
fmt.video.i_chroma = fmt.i_codec;
block_t *data = Load(demux);
if (data && var_InheritBool(demux, "image-decode")) {
char *string = var_InheritString(demux, "image-chroma");
vlc_fourcc_t chroma = vlc_fourcc_GetCodecFromString(VIDEO_ES, string);
free(string);
data = Decode(demux, &fmt.video, chroma, data);
fmt.i_codec = fmt.video.i_chroma;
}
fmt.i_id = var_InheritInteger(demux, "image-id");
fmt.i_group = var_InheritInteger(demux, "image-group");
if (var_InheritURational(demux,
&fmt.video.i_frame_rate,
&fmt.video.i_frame_rate_base,
"image-fps") ||
fmt.video.i_frame_rate <= 0 || fmt.video.i_frame_rate_base <= 0) {
msg_Err(demux, "Invalid frame rate, using 10/1 instead");
fmt.video.i_frame_rate = 10;
fmt.video.i_frame_rate_base = 1;
}
/* If loadind failed, we still continue to avoid mis-detection
* by other demuxers. */
if (!data)
msg_Err(demux, "Failed to load the image");
/* */
demux_sys_t *sys = malloc(sizeof(*sys));
if (!sys) {
if (data)
block_Release(data);
es_format_Clean(&fmt);
return VLC_ENOMEM;
}
sys->data = data;
sys->es = es_out_Add(demux->out, &fmt);
sys->duration = CLOCK_FREQ * var_InheritFloat(demux, "image-duration");
sys->is_realtime = var_InheritBool(demux, "image-realtime");
sys->pts_origin = sys->is_realtime ? mdate() : 0;
sys->pts_next = VLC_TS_INVALID;
date_Init(&sys->pts, fmt.video.i_frame_rate, fmt.video.i_frame_rate_base);
date_Set(&sys->pts, 0);
es_format_Clean(&fmt);
demux->pf_demux = Demux;
demux->pf_control = Control;
demux->p_sys = sys;
return VLC_SUCCESS;
}
/*****************************************************************************
* ProcessInitialHeader: processes the inital Opus header packet.
*****************************************************************************/
static int ProcessInitialHeader( decoder_t *p_dec, ogg_packet *p_oggpacket )
{
int err;
unsigned char new_stream_map[8];
decoder_sys_t *p_sys = p_dec->p_sys;
OpusHeader *p_header = &p_sys->header;
if( !opus_header_parse((unsigned char *)p_oggpacket->packet,p_oggpacket->bytes,p_header) )
{
msg_Err( p_dec, "cannot read Opus header" );
return VLC_EGENERIC;
}
msg_Dbg( p_dec, "Opus audio with %d channels", p_header->channels);
if((p_header->channels>2 && p_header->channel_mapping==0) ||
(p_header->channels>8 && p_header->channel_mapping==1) ||
p_header->channel_mapping>1)
{
msg_Err( p_dec, "Unsupported channel mapping" );
return VLC_EGENERIC;
}
/* Setup the format */
p_dec->fmt_out.audio.i_physical_channels =
p_dec->fmt_out.audio.i_original_channels =
pi_channels_maps[p_header->channels];
p_dec->fmt_out.audio.i_channels = p_header->channels;
p_dec->fmt_out.audio.i_rate = 48000;
if( p_header->channels>2 && p_header->channels<9 )
{
static const uint32_t *pi_ch[6] = { pi_3channels_in, pi_4channels_in,
pi_5channels_in, pi_6channels_in,
pi_7channels_in, pi_8channels_in };
uint8_t pi_chan_table[AOUT_CHAN_MAX];
aout_CheckChannelReorder( pi_ch[p_header->channels-3], NULL,
p_dec->fmt_out.audio.i_physical_channels,
pi_chan_table );
for(int i=0;i<p_header->channels;i++)
new_stream_map[pi_chan_table[i]]=p_header->stream_map[i];
}
/* Opus decoder init */
p_sys->p_st = opus_multistream_decoder_create( 48000, p_header->channels,
p_header->nb_streams, p_header->nb_coupled,
p_header->channels>2?new_stream_map:p_header->stream_map,
&err );
if( !p_sys->p_st || err!=OPUS_OK )
{
msg_Err( p_dec, "decoder initialization failed" );
return VLC_EGENERIC;
}
#ifdef OPUS_SET_GAIN
if( opus_multistream_decoder_ctl( p_sys->p_st,OPUS_SET_GAIN(p_header->gain) ) != OPUS_OK )
{
msg_Err( p_dec, "OPUS_SET_GAIN failed" );
opus_multistream_decoder_destroy( p_sys->p_st );
return VLC_EGENERIC;
}
#endif
date_Init( &p_sys->end_date, 48000, 1 );
return VLC_SUCCESS;
}
/*****************************************************************************
* DecodeFrame: decodes an lpcm frame.
****************************************************************************
* Beware, this function must be fed with complete frames (PES packet).
*****************************************************************************/
static void *DecodeFrame( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_block;
unsigned int i_rate = 0, i_original_channels = 0, i_channels = 0, i_bits = 0;
int i_frame_length;
if( !pp_block || !*pp_block ) return NULL;
p_block = *pp_block;
*pp_block = NULL; /* So the packet doesn't get re-sent */
/* Date management */
if( p_block->i_pts > 0 &&
p_block->i_pts != date_Get( &p_sys->end_date ) )
{
date_Set( &p_sys->end_date, p_block->i_pts );
}
if( !date_Get( &p_sys->end_date ) )
{
/* We've just started the stream, wait for the first PTS. */
block_Release( p_block );
return NULL;
}
if( p_block->i_buffer <= p_sys->i_header_size )
{
msg_Err(p_dec, "frame is too short");
block_Release( p_block );
return NULL;
}
int i_ret;
unsigned i_padding = 0;
aob_group_t p_aob_group[2];
switch( p_sys->i_type )
{
case LPCM_VOB:
i_ret = VobHeader( &i_rate, &i_channels, &i_original_channels, &i_bits,
p_block->p_buffer );
break;
case LPCM_AOB:
i_ret = AobHeader( &i_rate, &i_channels, &i_original_channels, &i_bits, &i_padding,
p_aob_group,
p_block->p_buffer );
break;
case LPCM_BD:
i_ret = BdHeader( &i_rate, &i_channels, &i_original_channels, &i_bits,
p_block->p_buffer );
break;
default:
assert(0);
}
if( i_ret || p_block->i_buffer <= p_sys->i_header_size + i_padding )
{
msg_Warn( p_dec, "no frame sync or too small frame" );
block_Release( p_block );
return NULL;
}
/* Set output properties */
if( p_dec->fmt_out.audio.i_rate != i_rate )
{
date_Init( &p_sys->end_date, i_rate, 1 );
date_Set( &p_sys->end_date, p_block->i_pts );
}
p_dec->fmt_out.audio.i_rate = i_rate;
p_dec->fmt_out.audio.i_channels = i_channels;
p_dec->fmt_out.audio.i_original_channels = i_original_channels;
p_dec->fmt_out.audio.i_physical_channels = i_original_channels & AOUT_CHAN_PHYSMASK;
i_frame_length = (p_block->i_buffer - p_sys->i_header_size - i_padding) / i_channels * 8 / i_bits;
if( p_sys->b_packetizer )
{
p_block->i_pts = p_block->i_dts = date_Get( &p_sys->end_date );
p_block->i_length =
date_Increment( &p_sys->end_date, i_frame_length ) -
p_block->i_pts;
/* Just pass on the incoming frame */
return p_block;
}
else
{
/* */
if( i_bits == 16 )
{
p_dec->fmt_out.i_codec = VLC_CODEC_S16B;
p_dec->fmt_out.audio.i_bitspersample = 16;
}
else
{
p_dec->fmt_out.i_codec = VLC_CODEC_S24B;
p_dec->fmt_out.audio.i_bitspersample = 24;
}
/* */
aout_buffer_t *p_aout_buffer;
p_aout_buffer = decoder_NewAudioBuffer( p_dec, i_frame_length );
if( !p_aout_buffer )
return NULL;
p_aout_buffer->i_pts = date_Get( &p_sys->end_date );
p_aout_buffer->i_length =
date_Increment( &p_sys->end_date, i_frame_length )
- p_aout_buffer->i_pts;
p_block->p_buffer += p_sys->i_header_size + i_padding;
p_block->i_buffer -= p_sys->i_header_size + i_padding;
switch( p_sys->i_type )
{
case LPCM_VOB:
VobExtract( p_aout_buffer, p_block, i_bits );
break;
case LPCM_AOB:
AobExtract( p_aout_buffer, p_block, i_bits, p_aob_group );
break;
default:
assert(0);
case LPCM_BD:
BdExtract( p_aout_buffer, p_block );
break;
}
block_Release( p_block );
return p_aout_buffer;
}
}
/*****************************************************************************
* OpenDecoder: probe the decoder and return score
*****************************************************************************/
static int OpenDecoder( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t*)p_this;
decoder_sys_t *p_sys;
switch( p_dec->fmt_in.i_codec )
{
case VLC_FOURCC('i','m','a', '4'): /* IMA ADPCM */
case VLC_FOURCC('m','s',0x00,0x02): /* MS ADPCM */
case VLC_FOURCC('m','s',0x00,0x11): /* IMA ADPCM */
case VLC_CODEC_ADPCM_DK3:
case VLC_CODEC_ADPCM_DK4:
case VLC_FOURCC('X','A','J', 0): /* EA ADPCM */
break;
default:
return VLC_EGENERIC;
}
if( p_dec->fmt_in.audio.i_channels <= 0 ||
p_dec->fmt_in.audio.i_channels > 5 )
{
msg_Err( p_dec, "invalid number of channel (not between 1 and 5): %i",
p_dec->fmt_in.audio.i_channels );
return VLC_EGENERIC;
}
if( p_dec->fmt_in.audio.i_rate <= 0 )
{
msg_Err( p_dec, "bad samplerate" );
return VLC_EGENERIC;
}
/* Allocate the memory needed to store the decoder's structure */
p_sys = malloc(sizeof(*p_sys));
if( unlikely(p_sys == NULL) )
return VLC_ENOMEM;
p_sys->prev = NULL;
switch( p_dec->fmt_in.i_codec )
{
case VLC_FOURCC('i','m','a', '4'): /* IMA ADPCM */
p_sys->codec = ADPCM_IMA_QT;
break;
case VLC_CODEC_ADPCM_IMA_WAV: /* IMA ADPCM */
p_sys->codec = ADPCM_IMA_WAV;
break;
case VLC_CODEC_ADPCM_MS: /* MS ADPCM */
p_sys->codec = ADPCM_MS;
break;
case VLC_CODEC_ADPCM_DK4: /* Duck DK4 ADPCM */
p_sys->codec = ADPCM_DK4;
break;
case VLC_CODEC_ADPCM_DK3: /* Duck DK3 ADPCM */
p_sys->codec = ADPCM_DK3;
break;
case VLC_FOURCC('X','A','J', 0): /* EA ADPCM */
p_sys->codec = ADPCM_EA;
p_sys->prev = calloc( 2 * p_dec->fmt_in.audio.i_channels,
sizeof( int16_t ) );
if( unlikely(p_sys->prev == NULL) )
{
free( p_sys );
return VLC_ENOMEM;
}
break;
}
if( p_dec->fmt_in.audio.i_blockalign <= 0 )
{
p_sys->i_block = (p_sys->codec == ADPCM_IMA_QT) ?
34 * p_dec->fmt_in.audio.i_channels : 1024;
msg_Warn( p_dec, "block size undefined, using %zu", p_sys->i_block );
}
else
{
p_sys->i_block = p_dec->fmt_in.audio.i_blockalign;
}
/* calculate samples per block */
switch( p_sys->codec )
{
case ADPCM_IMA_QT:
p_sys->i_samplesperblock = 64;
break;
case ADPCM_IMA_WAV:
p_sys->i_samplesperblock =
2 * ( p_sys->i_block - 4 * p_dec->fmt_in.audio.i_channels ) /
p_dec->fmt_in.audio.i_channels;
break;
case ADPCM_MS:
p_sys->i_samplesperblock =
2 * (p_sys->i_block - 7 * p_dec->fmt_in.audio.i_channels) /
p_dec->fmt_in.audio.i_channels + 2;
break;
case ADPCM_DK4:
p_sys->i_samplesperblock =
2 * (p_sys->i_block - 4 * p_dec->fmt_in.audio.i_channels) /
p_dec->fmt_in.audio.i_channels + 1;
break;
case ADPCM_DK3:
p_dec->fmt_in.audio.i_channels = 2;
p_sys->i_samplesperblock = ( 4 * ( p_sys->i_block - 16 ) + 2 )/ 3;
break;
case ADPCM_EA:
p_sys->i_samplesperblock =
2 * (p_sys->i_block - p_dec->fmt_in.audio.i_channels) /
p_dec->fmt_in.audio.i_channels;
}
msg_Dbg( p_dec, "format: samplerate:%d Hz channels:%d bits/sample:%d "
"blockalign:%zu samplesperblock:%zu",
p_dec->fmt_in.audio.i_rate, p_dec->fmt_in.audio.i_channels,
p_dec->fmt_in.audio.i_bitspersample, p_sys->i_block,
p_sys->i_samplesperblock );
p_dec->p_sys = p_sys;
p_dec->fmt_out.i_cat = AUDIO_ES;
p_dec->fmt_out.i_codec = VLC_CODEC_S16N;
p_dec->fmt_out.audio.i_rate = p_dec->fmt_in.audio.i_rate;
p_dec->fmt_out.audio.i_channels = p_dec->fmt_in.audio.i_channels;
p_dec->fmt_out.audio.i_physical_channels =
p_dec->fmt_out.audio.i_original_channels =
pi_channels_maps[p_dec->fmt_in.audio.i_channels];
date_Init( &p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1 );
date_Set( &p_sys->end_date, 0 );
p_dec->pf_decode_audio = DecodeBlock;
return VLC_SUCCESS;
}
/****************************************************************************
* Encode: the whole thing
****************************************************************************
* This function spits out encapsulation units.
****************************************************************************/
static block_t *Encode( encoder_t *p_enc, picture_t *p_pic )
{
encoder_sys_t *p_sys = p_enc->p_sys;
block_t *p_block, *p_output_chain = NULL;
int i_plane, i_line, i_width, i_src_stride;
uint8_t *p_dst;
if( !p_pic ) return NULL;
/* we only know if the sequence is interlaced when the first
* picture arrives, so final setup is done here */
/* XXX todo, detect change of interlace */
p_sys->ctx.src_params.topfieldfirst = p_pic->b_top_field_first;
p_sys->ctx.src_params.source_sampling = !p_pic->b_progressive;
if( p_sys->b_auto_field_coding )
p_sys->ctx.enc_params.picture_coding_mode = !p_pic->b_progressive;
if( !p_sys->p_dirac )
{
date_t date;
/* Initialise the encoder with the encoder context */
p_sys->p_dirac = dirac_encoder_init( &p_sys->ctx, 0 );
if( !p_sys->p_dirac )
{
msg_Err( p_enc, "Failed to initialize dirac encoder" );
return NULL;
}
date_Init( &date, p_enc->fmt_in.video.i_frame_rate, p_enc->fmt_in.video.i_frame_rate_base );
#if DIRAC_RESEARCH_VERSION_ATLEAST(1,0,2)
int i_delayinpics = dirac_encoder_pts_offset( p_sys->p_dirac );
i_delayinpics /= p_sys->ctx.enc_params.picture_coding_mode + 1;
date_Increment( &date, i_delayinpics );
#else
date_Increment( &date, 1 );
#endif
p_sys->i_pts_offset = date_Get( &date );
/* picture_coding_mode = 1 == FIELD_CODING, two pictures are produced
* for each frame input. Calculate time between fields for offsetting
* the second field later. */
if( 1 == p_sys->ctx.enc_params.picture_coding_mode )
{
date_Set( &date, 0 );
date_Increment( &date, 1 );
p_sys->i_field_time = date_Get( &date ) / 2;
}
}
/* Copy input picture into encoder input buffer (stride by stride) */
/* Would be lovely to just pass the picture in, but there is noway for the
* library to free it */
p_dst = p_sys->p_buffer_in;
for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
{
uint8_t *p_src = p_pic->p[i_plane].p_pixels;
i_width = p_pic->p[i_plane].i_visible_pitch;
i_src_stride = p_pic->p[i_plane].i_pitch;
for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines; i_line++ )
{
vlc_memcpy( p_dst, p_src, i_width );
p_dst += i_width;
p_src += i_src_stride;
}
}
/* Load one frame of data into encoder */
if( dirac_encoder_load( p_sys->p_dirac, p_sys->p_buffer_in,
p_sys->i_buffer_in ) < 0 )
{
msg_Dbg( p_enc, "dirac_encoder_load() error" );
return NULL;
}
/* store pts in a lookaside buffer, so that the same pts may
* be used for the picture in coded order */
StorePicturePTS( p_enc, p_sys->i_input_picnum, p_pic->date );
p_sys->i_input_picnum++;
/* store dts in a queue, so that they appear in order in
* coded order */
p_block = block_New( p_enc, 1 );
if( !p_block )
return NULL;
p_block->i_dts = p_pic->date - p_sys->i_pts_offset;
block_FifoPut( p_sys->p_dts_fifo, p_block );
p_block = NULL;
/* for field coding mode, insert an extra value into both the
* pts lookaside buffer and dts queue, offset to correspond
* to a one field delay. */
if( 1 == p_sys->ctx.enc_params.picture_coding_mode )
{
StorePicturePTS( p_enc, p_sys->i_input_picnum, p_pic->date + p_sys->i_field_time );
p_sys->i_input_picnum++;
p_block = block_New( p_enc, 1 );
if( !p_block )
return NULL;
p_block->i_dts = p_pic->date - p_sys->i_pts_offset + p_sys->i_field_time;
block_FifoPut( p_sys->p_dts_fifo, p_block );
p_block = NULL;
}
dirac_encoder_state_t state;
/* Retrieve encoded frames from encoder */
do
{
p_sys->p_dirac->enc_buf.buffer = p_sys->p_buffer_out;
p_sys->p_dirac->enc_buf.size = p_sys->i_buffer_out;
state = dirac_encoder_output( p_sys->p_dirac );
switch( state )
{
case ENC_STATE_AVAIL: {
uint32_t pic_num;
/* extract data from encoder temporary buffer. */
p_block = block_New( p_enc, p_sys->p_dirac->enc_buf.size );
if( !p_block )
return NULL;
memcpy( p_block->p_buffer, p_sys->p_dirac->enc_buf.buffer,
p_sys->p_dirac->enc_buf.size );
/* if some flags were set for a previous block, prevent
* them from getting lost */
if( p_sys->p_chain )
p_block->i_flags |= p_sys->p_chain->i_flags;
/* store all extracted blocks in a chain and gather up when an
* entire encapsulation unit is avaliable (ends with a picture) */
block_ChainAppend( &p_sys->p_chain, p_block );
/* Presence of a Sequence header indicates a seek point */
if( 0 == p_block->p_buffer[4] )
{
p_block->i_flags |= BLOCK_FLAG_TYPE_I;
if( !p_enc->fmt_out.p_extra ) {
const uint8_t eos[] = { 'B','B','C','D',0x10,0,0,0,13,0,0,0,0 };
uint32_t len = GetDWBE( p_block->p_buffer + 5 );
/* if it hasn't been done so far, stash a copy of the
* sequence header for muxers such as ogg */
/* The OggDirac spec advises that a Dirac EOS DataUnit
* is appended to the sequence header to allow guard
* against poor streaming servers */
/* XXX, should this be done using the packetizer ? */
p_enc->fmt_out.p_extra = malloc( len + sizeof(eos) );
if( !p_enc->fmt_out.p_extra )
return NULL;
memcpy( p_enc->fmt_out.p_extra, p_block->p_buffer, len);
memcpy( (uint8_t*)p_enc->fmt_out.p_extra + len, eos, sizeof(eos) );
SetDWBE( (uint8_t*)p_enc->fmt_out.p_extra + len + 10, len );
p_enc->fmt_out.i_extra = len + sizeof(eos);
}
}
if( ReadDiracPictureNumber( &pic_num, p_block ) )
{
/* Finding a picture terminates an ecapsulation unit, gather
* all data and output; use the next dts value queued up
* and find correct pts in the tlb */
p_block = block_FifoGet( p_sys->p_dts_fifo );
p_sys->p_chain->i_dts = p_block->i_dts;
p_sys->p_chain->i_pts = GetPicturePTS( p_enc, pic_num );
block_Release( p_block );
block_ChainAppend( &p_output_chain, block_ChainGather( p_sys->p_chain ) );
p_sys->p_chain = NULL;
} else {
p_block = NULL;
}
break;
}
case ENC_STATE_BUFFER:
break;
case ENC_STATE_INVALID:
default:
break;
}
} while( state == ENC_STATE_AVAIL );
return p_output_chain;
}
/*****************************************************************************
* OpenDecoder: probe the decoder and return score
*****************************************************************************/
static int OpenDecoder( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t*)p_this;
decoder_sys_t *p_sys;
switch( p_dec->fmt_in.i_codec )
{
/* Planar YUV */
case VLC_CODEC_I444:
case VLC_CODEC_J444:
case VLC_CODEC_I440:
case VLC_CODEC_J440:
case VLC_CODEC_I422:
case VLC_CODEC_J422:
case VLC_CODEC_I420:
case VLC_CODEC_J420:
case VLC_CODEC_YV12:
case VLC_CODEC_YV9:
case VLC_CODEC_I411:
case VLC_CODEC_I410:
case VLC_CODEC_GREY:
case VLC_CODEC_YUVP:
case VLC_CODEC_NV12:
case VLC_CODEC_NV21:
case VLC_CODEC_I422_10L:
case VLC_CODEC_I422_10B:
/* Packed YUV */
case VLC_CODEC_YUYV:
case VLC_CODEC_YVYU:
case VLC_CODEC_UYVY:
case VLC_CODEC_VYUY:
/* RGB */
case VLC_CODEC_RGB32:
case VLC_CODEC_RGB24:
case VLC_CODEC_RGB16:
case VLC_CODEC_RGB15:
case VLC_CODEC_RGB8:
case VLC_CODEC_RGBP:
case VLC_CODEC_RGBA:
break;
default:
return VLC_EGENERIC;
}
/* Allocate the memory needed to store the decoder's structure */
if( ( p_dec->p_sys = p_sys =
(decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
return VLC_ENOMEM;
/* Misc init */
p_dec->p_sys->b_packetizer = false;
p_sys->b_invert = false;
if( (int)p_dec->fmt_in.video.i_height < 0 )
{
/* Frames are coded from bottom to top */
p_dec->fmt_in.video.i_height =
(unsigned int)(-(int)p_dec->fmt_in.video.i_height);
p_sys->b_invert = true;
}
if( !p_dec->fmt_in.video.i_visible_width )
p_dec->fmt_in.video.i_visible_width = p_dec->fmt_in.video.i_width;
if( !p_dec->fmt_in.video.i_visible_height )
p_dec->fmt_in.video.i_visible_height = p_dec->fmt_in.video.i_height;
if( p_dec->fmt_in.video.i_visible_width <= 0
|| p_dec->fmt_in.video.i_visible_height <= 0 )
{
msg_Err( p_dec, "invalid display size %dx%d",
p_dec->fmt_in.video.i_width, p_dec->fmt_in.video.i_height );
return VLC_EGENERIC;
}
es_format_Copy( &p_dec->fmt_out, &p_dec->fmt_in );
date_Init( &p_sys->pts, p_dec->fmt_out.video.i_frame_rate,
p_dec->fmt_out.video.i_frame_rate_base );
if( p_dec->fmt_out.video.i_frame_rate == 0 ||
p_dec->fmt_out.video.i_frame_rate_base == 0)
{
msg_Warn( p_dec, "invalid frame rate %d/%d, using 25 fps instead",
p_dec->fmt_out.video.i_frame_rate,
p_dec->fmt_out.video.i_frame_rate_base);
date_Init( &p_sys->pts, 25, 1 );
}
/* Find out p_vdec->i_raw_size */
video_format_Setup( &p_dec->fmt_out.video, p_dec->fmt_in.i_codec,
p_dec->fmt_in.video.i_visible_width,
p_dec->fmt_in.video.i_visible_height,
p_dec->fmt_in.video.i_sar_num,
p_dec->fmt_in.video.i_sar_den );
picture_t picture;
picture_Setup( &picture, p_dec->fmt_out.i_codec,
p_dec->fmt_in.video.i_width,
p_dec->fmt_in.video.i_height, 0, 1 );
p_sys->i_raw_size = 0;
for( int i = 0; i < picture.i_planes; i++ )
{
p_sys->i_raw_size += picture.p[i].i_visible_pitch *
picture.p[i].i_visible_lines;
p_sys->planes[i] = picture.p[i];
}
if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
{
p_dec->fmt_out.video.i_sar_num = 1;
p_dec->fmt_out.video.i_sar_den = 1;
}
/* Set callbacks */
p_dec->pf_decode_video = (picture_t *(*)(decoder_t *, block_t **))
DecodeBlock;
p_dec->pf_packetize = (block_t *(*)(decoder_t *, block_t **))
DecodeBlock;
return VLC_SUCCESS;
}
/*****************************************************************************
* OpenAudio:
*****************************************************************************/
static int OpenAudio( decoder_t *p_dec )
{
decoder_sys_t *p_sys;
int i_error;
char fcc[4];
unsigned long WantedBufferSize;
unsigned long InputBufferSize = 0;
unsigned long OutputBufferSize = 0;
/* get lock, avoid segfault */
vlc_mutex_lock( &qt_mutex );
p_sys = calloc( 1, sizeof( decoder_sys_t ) );
p_dec->p_sys = p_sys;
p_dec->pf_decode_audio = DecodeAudio;
if( p_dec->fmt_in.i_original_fourcc )
memcpy( fcc, &p_dec->fmt_in.i_original_fourcc, 4 );
else
memcpy( fcc, &p_dec->fmt_in.i_codec, 4 );
#ifdef __APPLE__
EnterMovies();
#endif
if( QTAudioInit( p_dec ) )
{
msg_Err( p_dec, "cannot initialize QT");
goto exit_error;
}
#ifndef __APPLE__
if( ( i_error = p_sys->InitializeQTML( 6 + 16 ) ) )
{
msg_Dbg( p_dec, "error on InitializeQTML = %d", i_error );
goto exit_error;
}
#endif
/* input format settings */
p_sys->InputFormatInfo.flags = 0;
p_sys->InputFormatInfo.sampleCount = 0;
p_sys->InputFormatInfo.buffer = NULL;
p_sys->InputFormatInfo.reserved = 0;
p_sys->InputFormatInfo.numChannels = p_dec->fmt_in.audio.i_channels;
p_sys->InputFormatInfo.sampleSize = p_dec->fmt_in.audio.i_bitspersample;
p_sys->InputFormatInfo.sampleRate = p_dec->fmt_in.audio.i_rate;
p_sys->InputFormatInfo.format = FCC( fcc[0], fcc[1], fcc[2], fcc[3] );
/* output format settings */
p_sys->OutputFormatInfo.flags = 0;
p_sys->OutputFormatInfo.sampleCount = 0;
p_sys->OutputFormatInfo.buffer = NULL;
p_sys->OutputFormatInfo.reserved = 0;
p_sys->OutputFormatInfo.numChannels = p_dec->fmt_in.audio.i_channels;
p_sys->OutputFormatInfo.sampleSize = 16;
p_sys->OutputFormatInfo.sampleRate = p_dec->fmt_in.audio.i_rate;
p_sys->OutputFormatInfo.format = FCC( 'N', 'O', 'N', 'E' );
i_error = p_sys->SoundConverterOpen( &p_sys->InputFormatInfo,
&p_sys->OutputFormatInfo,
&p_sys->myConverter );
if( i_error )
{
msg_Err( p_dec, "error on SoundConverterOpen = %d", i_error );
goto exit_error;
}
#if 0
/* tell the sound converter we accept VBR formats */
i_error = SoundConverterSetInfo( p_dec->myConverter, siClientAcceptsVBR,
(void *)true );
#endif
if( p_dec->fmt_in.i_extra > 36 + 8 )
{
i_error = p_sys->SoundConverterSetInfo( p_sys->myConverter,
FCC( 'w', 'a', 'v', 'e' ),
((uint8_t*)p_dec->fmt_in.p_extra) + 36 + 8 );
msg_Dbg( p_dec, "error on SoundConverterSetInfo = %d", i_error );
}
WantedBufferSize = p_sys->OutputFormatInfo.numChannels *
p_sys->OutputFormatInfo.sampleRate * 2;
p_sys->FramesToGet = 0;
i_error = p_sys->SoundConverterGetBufferSizes( p_sys->myConverter,
WantedBufferSize,
&p_sys->FramesToGet,
&InputBufferSize,
&OutputBufferSize );
msg_Dbg( p_dec, "WantedBufferSize=%li InputBufferSize=%li "
"OutputBufferSize=%li FramesToGet=%li",
WantedBufferSize, InputBufferSize, OutputBufferSize,
p_sys->FramesToGet );
p_sys->InFrameSize = (InputBufferSize + p_sys->FramesToGet - 1 ) /
p_sys->FramesToGet;
p_sys->OutFrameSize = OutputBufferSize / p_sys->FramesToGet;
msg_Dbg( p_dec, "frame size %d -> %d",
p_sys->InFrameSize, p_sys->OutFrameSize );
if( (i_error = p_sys->SoundConverterBeginConversion(p_sys->myConverter)) )
{
msg_Err( p_dec,
"error on SoundConverterBeginConversion = %d", i_error );
goto exit_error;
}
es_format_Init( &p_dec->fmt_out, AUDIO_ES, VLC_CODEC_S16N );
p_dec->fmt_out.audio.i_rate = p_sys->OutputFormatInfo.sampleRate;
p_dec->fmt_out.audio.i_channels = p_sys->OutputFormatInfo.numChannels;
p_dec->fmt_out.audio.i_physical_channels =
p_dec->fmt_out.audio.i_original_channels =
pi_channels_maps[p_sys->OutputFormatInfo.numChannels];
date_Init( &p_sys->date, p_dec->fmt_out.audio.i_rate, 1 );
p_sys->i_buffer = 0;
p_sys->i_buffer_size = 100*1000;
p_sys->p_buffer = malloc( p_sys->i_buffer_size );
if( !p_sys->p_buffer )
goto exit_error;
p_sys->i_out = 0;
p_sys->i_out_frames = 0;
vlc_mutex_unlock( &qt_mutex );
return VLC_SUCCESS;
exit_error:
#ifdef LOADER
Restore_LDT_Keeper( p_sys->ldt_fs );
#endif
vlc_mutex_unlock( &qt_mutex );
free( p_sys );
return VLC_EGENERIC;
}
/*****************************************************************************
* DecodeAudio: Called to decode one frame
*****************************************************************************/
aout_buffer_t * DecodeAudio ( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
int i_used, i_output;
aout_buffer_t *p_buffer;
block_t *p_block;
AVPacket pkt;
if( !pp_block || !*pp_block ) return NULL;
p_block = *pp_block;
if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra &&
p_sys->b_delayed_open)
{
InitDecoderConfig( p_dec, p_sys->p_context);
if( ffmpeg_OpenCodec( p_dec ) )
msg_Err( p_dec, "Cannot open decoder %s", p_sys->psz_namecodec );
}
if( p_sys->b_delayed_open )
{
block_Release( p_block );
return NULL;
}
if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
{
block_Release( p_block );
avcodec_flush_buffers( p_sys->p_context );
p_sys->i_samples = 0;
date_Set( &p_sys->end_date, 0 );
if( p_sys->i_codec_id == CODEC_ID_MP2 || p_sys->i_codec_id == CODEC_ID_MP3 )
p_sys->i_reject_count = 3;
return NULL;
}
if( p_sys->i_samples > 0 )
{
/* More data */
p_buffer = SplitBuffer( p_dec );
if( !p_buffer ) block_Release( p_block );
return p_buffer;
}
if( !date_Get( &p_sys->end_date ) && !p_block->i_pts )
{
/* We've just started the stream, wait for the first PTS. */
block_Release( p_block );
return NULL;
}
if( p_block->i_buffer <= 0 )
{
block_Release( p_block );
return NULL;
}
if( (p_block->i_flags & BLOCK_FLAG_PRIVATE_REALLOCATED) == 0 )
{
*pp_block = p_block = block_Realloc( p_block, 0, p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
if( !p_block )
return NULL;
p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
memset( &p_block->p_buffer[p_block->i_buffer], 0, FF_INPUT_BUFFER_PADDING_SIZE );
p_block->i_flags |= BLOCK_FLAG_PRIVATE_REALLOCATED;
}
do
{
i_output = __MAX( p_block->i_buffer, p_sys->i_output_max );
if( i_output > p_sys->i_output_max )
{
/* Grow output buffer if necessary (eg. for PCM data) */
p_sys->p_output = av_realloc( p_sys->p_output, i_output );
}
av_init_packet( &pkt );
pkt.data = p_block->p_buffer;
pkt.size = p_block->i_buffer;
i_used = avcodec_decode_audio3( p_sys->p_context,
(int16_t*)p_sys->p_output, &i_output,
&pkt );
if( i_used < 0 || i_output < 0 )
{
if( i_used < 0 )
msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
p_block->i_buffer );
block_Release( p_block );
return NULL;
}
else if( (size_t)i_used > p_block->i_buffer )
{
i_used = p_block->i_buffer;
}
p_block->i_buffer -= i_used;
p_block->p_buffer += i_used;
} while( p_block->i_buffer > 0 && i_output <= 0 );
if( p_sys->p_context->channels <= 0 || p_sys->p_context->channels > 8 ||
p_sys->p_context->sample_rate <= 0 )
{
msg_Warn( p_dec, "invalid audio properties channels count %d, sample rate %d",
p_sys->p_context->channels, p_sys->p_context->sample_rate );
block_Release( p_block );
return NULL;
}
if( p_dec->fmt_out.audio.i_rate != (unsigned int)p_sys->p_context->sample_rate )
{
date_Init( &p_sys->end_date, p_sys->p_context->sample_rate, 1 );
date_Set( &p_sys->end_date, p_block->i_pts );
}
/* **** Set audio output parameters **** */
SetupOutputFormat( p_dec, true );
if( p_block->i_pts != 0 &&
p_block->i_pts != date_Get( &p_sys->end_date ) )
{
date_Set( &p_sys->end_date, p_block->i_pts );
}
p_block->i_pts = 0;
/* **** Now we can output these samples **** */
p_sys->i_samples = i_output / (p_dec->fmt_out.audio.i_bitspersample / 8) / p_sys->p_context->channels;
p_sys->p_samples = p_sys->p_output;
/* Silent unwanted samples */
if( p_sys->i_reject_count > 0 )
{
memset( p_sys->p_output, 0, i_output );
p_sys->i_reject_count--;
}
p_buffer = SplitBuffer( p_dec );
if( !p_buffer ) block_Release( p_block );
return p_buffer;
}
/*****************************************************************************
* InitAudioDec: initialize audio decoder
*****************************************************************************
* The ffmpeg codec will be opened, some memory allocated.
*****************************************************************************/
int InitAudioDec( decoder_t *p_dec, AVCodecContext *p_context,
AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
{
decoder_sys_t *p_sys;
/* Allocate the memory needed to store the decoder's structure */
if( ( p_dec->p_sys = p_sys = malloc(sizeof(*p_sys)) ) == NULL )
{
return VLC_ENOMEM;
}
p_codec->type = AVMEDIA_TYPE_AUDIO;
p_context->codec_type = AVMEDIA_TYPE_AUDIO;
p_context->codec_id = i_codec_id;
p_sys->p_context = p_context;
p_sys->p_codec = p_codec;
p_sys->i_codec_id = i_codec_id;
p_sys->psz_namecodec = psz_namecodec;
p_sys->b_delayed_open = true;
// Initialize decoder extradata
InitDecoderConfig( p_dec, p_context);
/* ***** Open the codec ***** */
if( ffmpeg_OpenCodec( p_dec ) < 0 )
{
msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
free( p_sys->p_context->extradata );
free( p_sys );
return VLC_EGENERIC;
}
switch( i_codec_id )
{
case CODEC_ID_WAVPACK:
p_sys->i_output_max = 8 * sizeof(int32_t) * 131072;
break;
case CODEC_ID_TTA:
p_sys->i_output_max = p_sys->p_context->channels * sizeof(int32_t) * p_sys->p_context->sample_rate * 2;
break;
case CODEC_ID_FLAC:
p_sys->i_output_max = 8 * sizeof(int32_t) * 65535;
break;
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 52, 35, 0 )
case CODEC_ID_WMAPRO:
p_sys->i_output_max = 8 * sizeof(float) * 6144; /* (1 << 12) * 3/2 */
break;
#endif
default:
p_sys->i_output_max = 0;
break;
}
if( p_sys->i_output_max < AVCODEC_MAX_AUDIO_FRAME_SIZE )
p_sys->i_output_max = AVCODEC_MAX_AUDIO_FRAME_SIZE;
msg_Dbg( p_dec, "Using %d bytes output buffer", p_sys->i_output_max );
p_sys->p_output = av_malloc( p_sys->i_output_max );
p_sys->p_samples = NULL;
p_sys->i_samples = 0;
p_sys->i_reject_count = 0;
p_sys->b_extract = false;
p_sys->i_previous_channels = 0;
p_sys->i_previous_layout = 0;
/* */
p_dec->fmt_out.i_cat = AUDIO_ES;
/* Try to set as much information as possible but do not trust it */
SetupOutputFormat( p_dec, false );
date_Set( &p_sys->end_date, 0 );
if( p_dec->fmt_out.audio.i_rate )
date_Init( &p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1 );
else if( p_dec->fmt_in.audio.i_rate )
date_Init( &p_sys->end_date, p_dec->fmt_in.audio.i_rate, 1 );
return VLC_SUCCESS;
}
static block_t *DecodeRtpSpeexPacket( decoder_t *p_dec, block_t **pp_block )
{
block_t *p_speex_bit_block = *pp_block;
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_aout_buffer;
int i_decode_ret;
unsigned int i_speex_frame_size;
if ( !p_speex_bit_block || p_speex_bit_block->i_pts <= VLC_TS_INVALID )
return NULL;
/*
If the SpeexBits buffer size is 0 (a default value),
we know that a proper initialization has not yet been done.
*/
if ( p_sys->bits.buf_size==0 )
{
p_sys->p_header = malloc(sizeof(SpeexHeader));
if ( !p_sys->p_header )
{
msg_Err( p_dec, "Could not allocate a Speex header.");
return NULL;
}
const SpeexMode *mode = speex_lib_get_mode((p_sys->rtp_rate / 8000) >> 1);
speex_init_header( p_sys->p_header,p_sys->rtp_rate, 1, mode );
speex_bits_init( &p_sys->bits );
p_sys->p_state = speex_decoder_init( mode );
if ( !p_sys->p_state )
{
msg_Err( p_dec, "Could not allocate a Speex decoder." );
free( p_sys->p_header );
return NULL;
}
/*
Assume that variable bit rate is enabled. Also assume
that there is only one frame per packet.
*/
p_sys->p_header->vbr = 1;
p_sys->p_header->frames_per_packet = 1;
p_dec->fmt_out.audio.i_channels = p_sys->p_header->nb_channels;
p_dec->fmt_out.audio.i_physical_channels =
p_dec->fmt_out.audio.i_original_channels =
pi_channels_maps[p_sys->p_header->nb_channels];
p_dec->fmt_out.audio.i_rate = p_sys->p_header->rate;
if ( speex_mode_query( &speex_nb_mode,
SPEEX_MODE_FRAME_SIZE,
&i_speex_frame_size ) )
{
msg_Err( p_dec, "Could not determine the frame size." );
speex_decoder_destroy( p_sys->p_state );
free( p_sys->p_header );
return NULL;
}
p_dec->fmt_out.audio.i_bytes_per_frame = i_speex_frame_size;
date_Init(&p_sys->end_date, p_sys->p_header->rate, 1);
}
/*****************************************************************************
* ProcessInitialHeader: processes the inital Speex header packet.
*****************************************************************************/
static int ProcessInitialHeader( decoder_t *p_dec, ogg_packet *p_oggpacket )
{
decoder_sys_t *p_sys = p_dec->p_sys;
void *p_state;
SpeexHeader *p_header;
const SpeexMode *p_mode;
SpeexCallback callback;
p_sys->p_header = p_header =
speex_packet_to_header( (char *)p_oggpacket->packet,
p_oggpacket->bytes );
if( !p_header )
{
msg_Err( p_dec, "cannot read Speex header" );
return VLC_EGENERIC;
}
if( p_header->mode >= SPEEX_NB_MODES || p_header->mode < 0 )
{
msg_Err( p_dec, "mode number %d does not (yet/any longer) exist in "
"this version of libspeex.", p_header->mode );
return VLC_EGENERIC;
}
p_mode = speex_mode_list[p_header->mode];
if( p_mode == NULL )
return VLC_EGENERIC;
if( p_header->speex_version_id > 1 )
{
msg_Err( p_dec, "this file was encoded with Speex bit-stream "
"version %d which is not supported by this decoder.",
p_header->speex_version_id );
return VLC_EGENERIC;
}
if( p_mode->bitstream_version < p_header->mode_bitstream_version )
{
msg_Err( p_dec, "file encoded with a newer version of Speex." );
return VLC_EGENERIC;
}
if( p_mode->bitstream_version > p_header->mode_bitstream_version )
{
msg_Err( p_dec, "file encoded with an older version of Speex." );
return VLC_EGENERIC;
}
msg_Dbg( p_dec, "Speex %d Hz audio using %s mode %s%s",
p_header->rate, p_mode->modeName,
( p_header->nb_channels == 1 ) ? " (mono" : " (stereo",
p_header->vbr ? ", VBR)" : ")" );
/* Take care of speex decoder init */
speex_bits_init( &p_sys->bits );
p_sys->p_state = p_state = speex_decoder_init( p_mode );
if( !p_state )
{
msg_Err( p_dec, "decoder initialization failed" );
return VLC_EGENERIC;
}
if( p_header->nb_channels == 2 )
{
SpeexStereoState stereo = SPEEX_STEREO_STATE_INIT;
p_sys->stereo = stereo;
callback.callback_id = SPEEX_INBAND_STEREO;
callback.func = speex_std_stereo_request_handler;
callback.data = &p_sys->stereo;
speex_decoder_ctl( p_state, SPEEX_SET_HANDLER, &callback );
}
if( p_header->nb_channels <= 0 ||
p_header->nb_channels > 5 )
{
msg_Err( p_dec, "invalid number of channels (not between 1 and 5): %i",
p_header->nb_channels );
return VLC_EGENERIC;
}
/* Setup the format */
p_dec->fmt_out.audio.i_physical_channels =
p_dec->fmt_out.audio.i_original_channels =
pi_channels_maps[p_header->nb_channels];
p_dec->fmt_out.audio.i_channels = p_header->nb_channels;
p_dec->fmt_out.audio.i_rate = p_header->rate;
date_Init( &p_sys->end_date, p_header->rate, 1 );
return VLC_SUCCESS;
}
static int Open (vlc_object_t *p_this)
{
decoder_t *p_dec = (decoder_t *)p_this;
if (p_dec->fmt_in.i_codec != VLC_CODEC_MIDI)
return VLC_EGENERIC;
decoder_sys_t *p_sys = (decoder_sys_t *)malloc (sizeof (*p_sys)); // sunqueen modify
if (unlikely(p_sys == NULL))
return VLC_ENOMEM;
p_sys->settings = new_fluid_settings ();
p_sys->synth = new_fluid_synth (p_sys->settings);
p_sys->soundfont = -1;
char *font_path = var_InheritString (p_this, "soundfont");
if (font_path != NULL)
{
msg_Dbg (p_this, "loading sound fonts file %s", font_path);
p_sys->soundfont = fluid_synth_sfload (p_sys->synth, font_path, 1);
if (p_sys->soundfont == -1)
msg_Err (p_this, "cannot load sound fonts file %s", font_path);
free (font_path);
}
#ifdef _POSIX_VERSION
else
{
glob_t gl;
glob ("/usr/share/sounds/sf2/*.sf2", GLOB_NOESCAPE, NULL, &gl);
for (size_t i = 0; i < gl.gl_pathc; i++)
{
const char *path = gl.gl_pathv[i];
msg_Dbg (p_this, "loading sound fonts file %s", path);
p_sys->soundfont = fluid_synth_sfload (p_sys->synth, path, 1);
if (p_sys->soundfont != -1)
break; /* it worked! */
msg_Err (p_this, "cannot load sound fonts file %s", path);
}
globfree (&gl);
}
#endif
if (p_sys->soundfont == -1)
{
msg_Err (p_this, "sound font file required for synthesis");
dialog_Fatal (p_this, _("MIDI synthesis not set up"),
_("A sound font file (.SF2) is required for MIDI synthesis.\n"
"Please install a sound font and configure it "
"from the VLC preferences "
"(Input / Codecs > Audio codecs > FluidSynth).\n"));
delete_fluid_synth (p_sys->synth);
delete_fluid_settings (p_sys->settings);
free (p_sys);
return VLC_EGENERIC;
}
fluid_synth_set_chorus_on (p_sys->synth,
var_InheritBool (p_this, "synth-chorus"));
fluid_synth_set_gain (p_sys->synth,
var_InheritFloat (p_this, "synth-gain"));
fluid_synth_set_polyphony (p_sys->synth,
var_InheritInteger (p_this, "synth-polyphony"));
fluid_synth_set_reverb_on (p_sys->synth,
var_InheritBool (p_this, "synth-reverb"));
p_dec->fmt_out.i_cat = AUDIO_ES;
p_dec->fmt_out.audio.i_rate =
var_InheritInteger (p_this, "synth-sample-rate");;
fluid_synth_set_sample_rate (p_sys->synth, p_dec->fmt_out.audio.i_rate);
p_dec->fmt_out.audio.i_channels = 2;
p_dec->fmt_out.audio.i_original_channels =
p_dec->fmt_out.audio.i_physical_channels =
AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
p_dec->fmt_out.i_codec = VLC_CODEC_FL32;
p_dec->fmt_out.audio.i_bitspersample = 32;
date_Init (&p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1);
date_Set (&p_sys->end_date, 0);
p_dec->p_sys = p_sys;
p_dec->pf_decode_audio = DecodeBlock;
return VLC_SUCCESS;
}
/*****************************************************************************
* ProcessHeaders: process Vorbis headers.
*****************************************************************************/
static int ProcessHeaders( decoder_t *p_dec )
{
decoder_sys_t *p_sys = p_dec->p_sys;
ogg_packet oggpacket;
unsigned pi_size[XIPH_MAX_HEADER_COUNT];
void *pp_data[XIPH_MAX_HEADER_COUNT];
unsigned i_count;
if( xiph_SplitHeaders( pi_size, pp_data, &i_count,
p_dec->fmt_in.i_extra, p_dec->fmt_in.p_extra) )
return VLC_EGENERIC;
if( i_count < 3 )
return VLC_EGENERIC;
oggpacket.granulepos = -1;
oggpacket.e_o_s = 0;
oggpacket.packetno = 0;
/* Take care of the initial Vorbis header */
oggpacket.b_o_s = 1; /* yes this actually is a b_o_s packet :) */
oggpacket.bytes = pi_size[0];
oggpacket.packet = pp_data[0];
if( vorbis_synthesis_headerin( &p_sys->vi, &p_sys->vc, &oggpacket ) < 0 )
{
msg_Err( p_dec, "this bitstream does not contain Vorbis audio data");
return VLC_EGENERIC;
}
/* Setup the format */
p_dec->fmt_out.audio.i_rate = p_sys->vi.rate;
p_dec->fmt_out.audio.i_channels = p_sys->vi.channels;
if( p_dec->fmt_out.audio.i_channels >= ARRAY_SIZE(pi_channels_maps) )
{
msg_Err( p_dec, "invalid number of channels (1-%zu): %i",
ARRAY_SIZE(pi_channels_maps),
p_dec->fmt_out.audio.i_channels );
return VLC_EGENERIC;
}
p_dec->fmt_out.audio.i_physical_channels =
p_dec->fmt_out.audio.i_original_channels =
pi_channels_maps[p_sys->vi.channels];
p_dec->fmt_out.i_bitrate = __MAX( 0, (int32_t) p_sys->vi.bitrate_nominal );
date_Init( &p_sys->end_date, p_sys->vi.rate, 1 );
msg_Dbg( p_dec, "channels:%d samplerate:%ld bitrate:%ud",
p_sys->vi.channels, p_sys->vi.rate, p_dec->fmt_out.i_bitrate );
/* The next packet in order is the comments header */
oggpacket.b_o_s = 0;
oggpacket.bytes = pi_size[1];
oggpacket.packet = pp_data[1];
if( vorbis_synthesis_headerin( &p_sys->vi, &p_sys->vc, &oggpacket ) < 0 )
{
msg_Err( p_dec, "2nd Vorbis header is corrupted" );
return VLC_EGENERIC;
}
ParseVorbisComments( p_dec );
/* The next packet in order is the codebooks header
* We need to watch out that this packet is not missing as a
* missing or corrupted header is fatal. */
oggpacket.b_o_s = 0;
oggpacket.bytes = pi_size[2];
oggpacket.packet = pp_data[2];
if( vorbis_synthesis_headerin( &p_sys->vi, &p_sys->vc, &oggpacket ) < 0 )
{
msg_Err( p_dec, "3rd Vorbis header is corrupted" );
return VLC_EGENERIC;
}
if( !p_sys->b_packetizer )
{
/* Initialize the Vorbis packet->PCM decoder */
vorbis_synthesis_init( &p_sys->vd, &p_sys->vi );
vorbis_block_init( &p_sys->vd, &p_sys->vb );
}
else
{
p_dec->fmt_out.i_extra = p_dec->fmt_in.i_extra;
p_dec->fmt_out.p_extra = xrealloc( p_dec->fmt_out.p_extra,
p_dec->fmt_out.i_extra );
memcpy( p_dec->fmt_out.p_extra,
p_dec->fmt_in.p_extra, p_dec->fmt_out.i_extra );
}
ConfigureChannelOrder(p_sys->pi_chan_table, p_sys->vi.channels,
p_dec->fmt_out.audio.i_physical_channels, true);
return VLC_SUCCESS;
}
