SpeexHeader *p_header;
SpeexStereoState stereo;
void *p_state;
+ unsigned int rtp_rate;
/*
* Common properties
static void CloseDecoder ( vlc_object_t * );
static void *DecodeBlock ( decoder_t *, block_t ** );
+static aout_buffer_t *DecodeRtpSpeexPacket( decoder_t *, block_t **);
static int ProcessHeaders( decoder_t * );
static int ProcessInitialHeader ( decoder_t *, ogg_packet * );
static void *ProcessPacket( decoder_t *, ogg_packet *, block_t ** );
decoder_t *p_dec = (decoder_t*)p_this;
decoder_sys_t *p_sys = p_dec->p_sys;
- if( p_dec->fmt_in.i_codec != VLC_FOURCC('s','p','x',' ') )
+ if( p_dec->fmt_in.i_codec != VLC_FOURCC('s','p','x',' ')
+ && p_dec->fmt_in.i_codec != VLC_FOURCC('s', 'p', 'x', 'r') )
{
return VLC_EGENERIC;
}
msg_Err( p_dec, "out of memory" );
return VLC_EGENERIC;
}
+ p_dec->p_sys->bits.buf_size = 0;
p_dec->p_sys->b_packetizer = VLC_FALSE;
+ p_dec->p_sys->rtp_rate = p_dec->fmt_in.audio.i_rate;
aout_DateSet( &p_sys->end_date, 0 );
p_dec->fmt_out.i_cat = AUDIO_ES;
p_dec->fmt_out.i_codec = AOUT_FMT_S16_NE;
- /* Set callbacks */
- p_dec->pf_decode_audio = (aout_buffer_t *(*)(decoder_t *, block_t **))
- DecodeBlock;
+ /*
+ Set callbacks
+ If the codec is spxr then this decoder is
+ being invoked on a Speex stream arriving via RTP.
+ A special decoder callback is used.
+ */
+ if (p_dec->fmt_in.i_codec == VLC_FOURCC('s', 'p', 'x', 'r'))
+ {
+ msg_Dbg( p_dec, "Using RTP version of Speex decoder @ rate %d.",
+ p_dec->fmt_in.audio.i_rate );
+ p_dec->pf_decode_audio = (aout_buffer_t *(*)(decoder_t *, block_t **))
+ DecodeRtpSpeexPacket;
+ }
+ else
+ {
+ p_dec->pf_decode_audio = (aout_buffer_t *(*)(decoder_t *, block_t **))
+ DecodeBlock;
+ }
p_dec->pf_packetize = (block_t *(*)(decoder_t *, block_t **))
DecodeBlock;
/* Check for headers */
if( p_sys->i_headers == 0 && p_dec->fmt_in.i_extra )
{
- /* Headers already available as extra data */
p_sys->i_headers = 2;
}
else if( oggpacket.bytes && p_sys->i_headers < 2 )
{
- /* Backup headers as extra data */
uint8_t *p_extra;
p_dec->fmt_in.p_extra =
block_t *p_block = *pp_block;
/* Date management */
- if( p_block && p_block->i_pts > 0 &&
+ if( p_block && p_block->i_pts > 0 &&
p_block->i_pts != aout_DateGet( &p_sys->end_date ) )
{
aout_DateSet( &p_sys->end_date, p_block->i_pts );
if( p_sys->b_packetizer )
{
- return SendPacket( p_dec, p_oggpacket, p_block );
+ if ( p_sys->p_header->frames_per_packet > 1 )
+ {
+ short *p_frame_holder = NULL;
+ int i_bits_before = 0, i_bits_after = 0, i_bytes_in_speex_frame = 0,
+ i_pcm_output_size = 0, i_bits_in_speex_frame = 0;
+ block_t *p_new_block = NULL;
+
+ i_pcm_output_size = p_sys->p_header->frame_size;
+ p_frame_holder = (short*)malloc( sizeof(short)*i_pcm_output_size );
+
+ speex_bits_read_from( &p_sys->bits, (char*)p_oggpacket->packet,
+ p_oggpacket->bytes);
+ i_bits_before = speex_bits_remaining( &p_sys->bits );
+ speex_decode_int(p_sys->p_state, &p_sys->bits, p_frame_holder);
+ i_bits_after = speex_bits_remaining( &p_sys->bits );
+
+ i_bits_in_speex_frame = i_bits_before - i_bits_after;
+ i_bytes_in_speex_frame = ( i_bits_in_speex_frame +
+ (8 - (i_bits_in_speex_frame % 8)) )
+ / 8;
+
+ p_new_block = block_New( p_dec, i_bytes_in_speex_frame );
+ memset( p_new_block->p_buffer, 0xff, i_bytes_in_speex_frame );
+
+ /*
+ * Copy the first frame in this packet to a new packet.
+ */
+ speex_bits_rewind( &p_sys->bits );
+ speex_bits_write( &p_sys->bits,
+ p_new_block->p_buffer,
+ i_bytes_in_speex_frame );
+
+ /*
+ * Move the remaining part of the original packet (subsequent
+ * frames, if there are any) into the beginning
+ * of the original packet so
+ * they are preserved following the realloc.
+ * Note: Any bits that
+ * remain in the initial packet
+ * are "filler" if they do not constitute
+ * an entire byte.
+ */
+ if ( i_bits_after > 7 )
+ {
+ /* round-down since we rounded-up earlier (to include
+ * the speex terminator code.
+ */
+ i_bytes_in_speex_frame--;
+ speex_bits_write( &p_sys->bits,
+ p_block->p_buffer,
+ p_block->i_buffer - i_bytes_in_speex_frame );
+ p_block = block_Realloc( p_block,
+ 0,
+ p_block->i_buffer-i_bytes_in_speex_frame );
+ *pp_block = p_block;
+ }
+ else
+ {
+ speex_bits_reset( &p_sys->bits );
+ }
+
+ free( p_frame_holder );
+ return SendPacket( p_dec, p_oggpacket /*Not used*/, p_new_block);
+ }
+ else
+ {
+ return SendPacket( p_dec, p_oggpacket, p_block );
+ }
}
else
{
}
}
+static aout_buffer_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;
+ aout_buffer_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 == 0 ) 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 = (SpeexHeader *)malloc(sizeof(SpeexHeader));
+ if ( !p_sys->p_header )
+ {
+ msg_Err( p_dec, "Could not allocate a Speex header.");
+ return NULL;
+ }
+ speex_init_header( p_sys->p_header,p_sys->rtp_rate,1,&speex_nb_mode );
+ speex_bits_init( &p_sys->bits );
+ p_sys->p_state = speex_decoder_init( &speex_nb_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;
+
+ aout_DateInit(&p_sys->end_date, p_sys->p_header->rate);
+ }
+
+ /*
+ If the SpeexBits are initialized but there is
+ still no header, an error must be thrown.
+ */
+ if ( !p_sys->p_header )
+ {
+ msg_Err( p_dec, "There is no valid Speex header found." );
+ return NULL;
+ }
+ *pp_block = NULL;
+
+ if ( !aout_DateGet( &p_sys->end_date ) )
+ aout_DateSet( &p_sys->end_date, p_speex_bit_block->i_dts );
+
+ /*
+ Ask for a new audio output buffer and make sure
+ we get one.
+ */
+ p_aout_buffer = p_dec->pf_aout_buffer_new( p_dec,
+ p_sys->p_header->frame_size );
+ if ( !p_aout_buffer || p_aout_buffer->i_nb_bytes == 0 )
+ {
+ msg_Err(p_dec, "Oops: No new buffer was returned!");
+ return NULL;
+ }
+
+ /*
+ Read the Speex payload into the SpeexBits buffer.
+ */
+ speex_bits_read_from( &p_sys->bits,
+ (char*)p_speex_bit_block->p_buffer,
+ p_speex_bit_block->i_buffer );
+
+ /*
+ Decode the input and ensure that no errors
+ were encountered.
+ */
+ i_decode_ret =
+ speex_decode_int( p_sys->p_state,&p_sys->bits,p_aout_buffer->p_buffer );
+ if ( i_decode_ret < 0 )
+ {
+ msg_Err( p_dec, "Decoding failed. Perhaps we have a bad stream?" );
+ return NULL;
+ }
+
+ /*
+ Handle date management on the audio output buffer.
+ */
+ p_aout_buffer->start_date = aout_DateGet( &p_sys->end_date );
+ p_aout_buffer->end_date = aout_DateIncrement( &p_sys->end_date,
+ p_sys->p_header->frame_size );
+
+
+ p_sys->i_frame_in_packet++;
+ block_Release( p_speex_bit_block );
+
+ return p_aout_buffer;
+}
+
/*****************************************************************************
* DecodePacket: decodes a Speex packet.
*****************************************************************************/
(int16_t *)p_aout_buffer->p_buffer ) )
{
case -2:
- msg_Warn( p_dec, "decoding error: corrupted stream?" );
+ msg_Err( p_dec, "decoding error: corrupted stream?" );
case -1: /* End of stream */
return NULL;
}
if( speex_bits_remaining( &p_sys->bits ) < 0 )
{
- msg_Warn( p_dec, "decoding overflow: corrupted stream?" );
+ msg_Err( p_dec, "decoding overflow: corrupted stream?" );
}
if( p_sys->p_header->nb_channels == 2 )
/* Date management */
p_aout_buffer->start_date = aout_DateGet( &p_sys->end_date );
p_aout_buffer->end_date =
- aout_DateIncrement( &p_sys->end_date, p_sys->p_header->frame_size);
+ aout_DateIncrement( &p_sys->end_date, p_sys->p_header->frame_size );
p_sys->i_frame_in_packet++;
p_block->i_dts = p_block->i_pts = aout_DateGet( &p_sys->end_date );
if( p_sys->i_headers >= p_sys->p_header->extra_headers + 2 )
+ {
p_block->i_length =
aout_DateIncrement( &p_sys->end_date,
p_sys->p_header->frame_size ) -
p_block->i_pts;
+ }
else
p_block->i_length = 0;
if( p_oggpacket->bytes < 8 )
{
- msg_Warn( p_dec, "invalid/corrupted comments" );
+ msg_Err( p_dec, "invalid/corrupted comments" );
return;
}
i_len = readint( p_buf, 0 ); p_buf += 4;
if( i_len > p_oggpacket->bytes - 4 )
{
- msg_Warn( p_dec, "invalid/corrupted comments" );
+ msg_Err( p_dec, "invalid/corrupted comments" );
return;
}
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