X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=modules%2Fcodec%2Fdts.c;h=9b4ac47f8d2a92ecf1fe9c414570e584a99bfa5a;hb=4063b0b285b5d6732768349401b00133a908ae8f;hp=f359b56b60e746075811da5fc0dd15aac904ba6a;hpb=2cb472dba008f7d877ffe6bae9c5575253365282;p=vlc diff --git a/modules/codec/dts.c b/modules/codec/dts.c index f359b56b60..9b4ac47f8d 100644 --- a/modules/codec/dts.c +++ b/modules/codec/dts.c @@ -1,7 +1,7 @@ /***************************************************************************** * dts.c: parse DTS audio sync info and packetize the stream ***************************************************************************** - * Copyright (C) 2003-2005 the VideoLAN team + * Copyright (C) 2003-2009 the VideoLAN team * $Id$ * * Authors: Jon Lech Johansen @@ -25,12 +25,35 @@ /***************************************************************************** * Preamble *****************************************************************************/ -#include -#include -#include "vlc_block_helper.h" +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif -#define DTS_HEADER_SIZE 14 +#include +#include +#include +#include +#include +#include + +/***************************************************************************** + * Module descriptor + *****************************************************************************/ +static int OpenDecoder ( vlc_object_t * ); +static int OpenPacketizer( vlc_object_t * ); +static void CloseCommon ( vlc_object_t * ); + +vlc_module_begin () + set_description( N_("DTS parser") ) + set_capability( "decoder", 100 ) + set_callbacks( OpenDecoder, CloseCommon ) + + add_submodule () + set_description( N_("DTS audio packetizer") ) + set_capability( "packetizer", 10 ) + set_callbacks( OpenPacketizer, CloseCommon ) +vlc_module_end () /***************************************************************************** * decoder_sys_t : decoder descriptor @@ -38,7 +61,7 @@ struct decoder_sys_t { /* Module mode */ - vlc_bool_t b_packetizer; + bool b_packetizer; /* * Input properties @@ -54,6 +77,7 @@ struct decoder_sys_t mtime_t i_pts; + bool b_dts_hd; /* Is the current frame a DTS HD one */ unsigned int i_bit_rate; unsigned int i_frame_size; unsigned int i_frame_length; @@ -72,64 +96,67 @@ enum { STATE_SEND_DATA }; +#define DTS_HEADER_SIZE 14 + /**************************************************************************** * Local prototypes ****************************************************************************/ -static int OpenDecoder ( vlc_object_t * ); -static int OpenPacketizer( vlc_object_t * ); -static void CloseDecoder ( vlc_object_t * ); -static void *DecodeBlock ( decoder_t *, block_t ** ); +static int OpenCommon( vlc_object_t *, bool b_packetizer ); +static void *DecodeBlock( decoder_t *, block_t ** ); static inline int SyncCode( const uint8_t * ); -static int SyncInfo ( const uint8_t *, unsigned int *, unsigned int *, - unsigned int *, unsigned int *, unsigned int * ); +static int SyncInfo( const uint8_t *, bool *, unsigned int *, unsigned int *, + unsigned int *, unsigned int *, unsigned int * ); static uint8_t *GetOutBuffer ( decoder_t *, void ** ); static aout_buffer_t *GetAoutBuffer( decoder_t * ); static block_t *GetSoutBuffer( decoder_t * ); /***************************************************************************** - * Module descriptor + * OpenDecoder: probe the decoder *****************************************************************************/ -vlc_module_begin(); - set_description( _("DTS parser") ); - set_capability( "decoder", 100 ); - set_callbacks( OpenDecoder, CloseDecoder ); +static int OpenDecoder( vlc_object_t *p_this ) +{ + /* HACK: Don't use this codec if we don't have an dts audio filter */ + if( !module_exists( "dtstofloat32" ) ) + return VLC_EGENERIC; - add_submodule(); - set_description( _("DTS audio packetizer") ); - set_capability( "packetizer", 10 ); - set_callbacks( OpenPacketizer, NULL ); -vlc_module_end(); + return OpenCommon( p_this, false ); +} /***************************************************************************** - * OpenDecoder: probe the decoder and return score + * OpenPacketizer: probe the packetizer *****************************************************************************/ -static int OpenDecoder( vlc_object_t *p_this ) +static int OpenPacketizer( vlc_object_t *p_this ) +{ + return OpenCommon( p_this, true ); +} + +/***************************************************************************** + * OpenCommon: + *****************************************************************************/ +static int OpenCommon( vlc_object_t *p_this, bool b_packetizer ) { decoder_t *p_dec = (decoder_t*)p_this; decoder_sys_t *p_sys; - if( p_dec->fmt_in.i_codec != VLC_FOURCC('d','t','s',' ') - && p_dec->fmt_in.i_codec != VLC_FOURCC('d','t','s','b') ) + if( p_dec->fmt_in.i_codec != VLC_FOURCC('d','t','s',' ') && + p_dec->fmt_in.i_codec != VLC_FOURCC('d','t','s','b') ) { 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 ) - { - msg_Err( p_dec, "out of memory" ); - return VLC_EGENERIC; - } + if( ( p_dec->p_sys = p_sys = malloc(sizeof(*p_sys)) ) == NULL ) + return VLC_ENOMEM; /* Misc init */ - p_sys->b_packetizer = VLC_FALSE; + p_sys->b_packetizer = b_packetizer; p_sys->i_state = STATE_NOSYNC; aout_DateSet( &p_sys->end_date, 0 ); + p_sys->b_dts_hd = false; - p_sys->bytestream = block_BytestreamInit( p_dec ); + p_sys->bytestream = block_BytestreamInit(); /* Set output properties */ p_dec->fmt_out.i_cat = AUDIO_ES; @@ -145,21 +172,8 @@ static int OpenDecoder( vlc_object_t *p_this ) return VLC_SUCCESS; } -static int OpenPacketizer( vlc_object_t *p_this ) -{ - decoder_t *p_dec = (decoder_t*)p_this; - - int i_ret = OpenDecoder( p_this ); - - if( i_ret == VLC_SUCCESS ) p_dec->p_sys->b_packetizer = VLC_TRUE; - - return i_ret; -} - /**************************************************************************** * DecodeBlock: the whole thing - **************************************************************************** - * This function is called just after the thread is launched. ****************************************************************************/ static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block ) { @@ -168,18 +182,26 @@ static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block ) uint8_t *p_buf; void *p_out_buffer; - if( !pp_block || !*pp_block ) return NULL; + if( !pp_block || !*pp_block ) + return NULL; - if( !aout_DateGet( &p_sys->end_date ) && !(*pp_block)->i_pts ) + if( (*pp_block)->i_flags&(BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) ) { - /* We've just started the stream, wait for the first PTS. */ + if( (*pp_block)->i_flags&BLOCK_FLAG_CORRUPTED ) + { + p_sys->i_state = STATE_NOSYNC; + block_BytestreamEmpty( &p_sys->bytestream ); + } + aout_DateSet( &p_sys->end_date, 0 ); block_Release( *pp_block ); return NULL; } - if( (*pp_block)->i_flags&(BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) ) + if( !aout_DateGet( &p_sys->end_date ) && !(*pp_block)->i_pts ) { - p_sys->i_state = STATE_NOSYNC; + /* We've just started the stream, wait for the first PTS. */ + block_Release( *pp_block ); + return NULL; } block_BytestreamPush( &p_sys->bytestream, *pp_block ); @@ -229,6 +251,7 @@ static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block ) /* Check if frame is valid and get frame info */ p_sys->i_frame_size = SyncInfo( p_header, + &p_sys->b_dts_hd, &p_sys->i_channels, &p_sys->i_channels_conf, &p_sys->i_rate, @@ -281,9 +304,17 @@ static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block ) p_sys->i_state = STATE_SEND_DATA; case STATE_SEND_DATA: + if( p_sys->b_dts_hd ) + { + /* Ignore DTS-HD */ + block_SkipBytes( &p_sys->bytestream, p_sys->i_frame_size ); + p_sys->i_state = STATE_NOSYNC; + break; + } + if( !(p_buf = GetOutBuffer( p_dec, &p_out_buffer )) ) { - //p_dec->b_error = VLC_TRUE; + //p_dec->b_error = true; return NULL; } @@ -308,9 +339,9 @@ static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block ) } /***************************************************************************** - * CloseDecoder: clean up the decoder + * CloseCommon: clean up the decoder *****************************************************************************/ -static void CloseDecoder( vlc_object_t *p_this ) +static void CloseCommon( vlc_object_t *p_this ) { decoder_t *p_dec = (decoder_t*)p_this; decoder_sys_t *p_sys = p_dec->p_sys; @@ -376,7 +407,7 @@ static aout_buffer_t *GetAoutBuffer( decoder_t *p_dec ) /* Hack for DTS S/PDIF filter which needs to send 3 frames at a time * (plus a few header bytes) */ - p_buf = p_dec->pf_aout_buffer_new( p_dec, p_sys->i_frame_length * 4 ); + p_buf = decoder_NewAudioBuffer( p_dec, p_sys->i_frame_length * 4 ); if( p_buf == NULL ) return NULL; p_buf->i_nb_samples = p_sys->i_frame_length; p_buf->i_nb_bytes = p_sys->i_frame_size; @@ -534,10 +565,18 @@ static inline int SyncCode( const uint8_t *p_buf ) { return VLC_SUCCESS; } - else return VLC_EGENERIC; + /* DTS-HD */ + else if( p_buf[0] == 0x64 && p_buf[1] == 0x58 && + p_buf[2] == 0x20 && p_buf[3] == 0x25 ) + { + return VLC_SUCCESS; + } + + return VLC_EGENERIC; } static int SyncInfo( const uint8_t *p_buf, + bool *pb_dts_hd, unsigned int *pi_channels, unsigned int *pi_channels_conf, unsigned int *pi_sample_rate, @@ -585,7 +624,42 @@ static int SyncInfo( const uint8_t *p_buf, i_frame_size = SyncInfo16be( p_buf, &i_audio_mode, pi_sample_rate, pi_bit_rate, pi_frame_length ); } - else return 0; + /* DTS-HD */ + else if( p_buf[0] == 0x64 && p_buf[1] == 0x58 && + p_buf[2] == 0x20 && p_buf[3] == 0x25 ) + { + int i_dts_hd_size; + bs_t s; + bs_init( &s, &p_buf[4], DTS_HEADER_SIZE - 4 ); + + bs_skip( &s, 8 + 2 ); + + if( bs_read1( &s ) ) + { + bs_skip( &s, 12 ); + i_dts_hd_size = bs_read( &s, 20 ) + 1; + } + else + { + bs_skip( &s, 8 ); + i_dts_hd_size = bs_read( &s, 16 ) + 1; + } + //uint16_t s0 = bs_read( &s, 16 ); + //uint16_t s1 = bs_read( &s, 16 ); + //fprintf( stderr, "DTS HD=%d : %x %x\n", i_dts_hd_size, s0, s1 ); + + *pb_dts_hd = true; + /* As we ignore the stream, do not modify those variables: + *pi_channels = ; + *pi_channels_conf = ; + *pi_sample_rate = ; + *pi_bit_rate = ; + *pi_frame_length = ; + */ + return i_dts_hd_size; + } + + *pb_dts_hd = false; switch( i_audio_mode & 0xFFFF ) {