/*****************************************************************************
* input_ext-dec.h: structures exported to the VideoLAN decoders
*****************************************************************************
- * Copyright (C) 1999, 2000 VideoLAN
- * $Id: input_ext-dec.h,v 1.24 2001/03/02 13:20:28 massiot Exp $
+ * Copyright (C) 1999-2001 VideoLAN
+ * $Id: input_ext-dec.h,v 1.59.2.1 2002/09/25 23:11:51 massiot Exp $
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
* Michel Kaempf <maxx@via.ecp.fr>
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
+/* ES streams types - see ISO/IEC 13818-1 table 2-29 numbers */
+#define MPEG1_VIDEO_ES 0x01
+#define MPEG2_VIDEO_ES 0x02
+#define MPEG1_AUDIO_ES 0x03
+#define MPEG2_AUDIO_ES 0x04
+#define AC3_AUDIO_ES 0x81
+/* These ones might violate the usage : */
+#define DVD_SPU_ES 0x82
+#define LPCM_AUDIO_ES 0x83
+/* These ones are only here to work around a bug in VLS - VLS doesn't
+ * skip the first bytes of the PES payload (stream private ID) when
+ * streaming. This is incompatible with all equipments. 'B' is for
+ * buggy. Please note that they are associated with FOURCCs '***b'.
+ * --Meuuh 2002-08-30
+ */
+#define A52B_AUDIO_ES 0x91
+#define DVDB_SPU_ES 0x92
+#define LPCMB_AUDIO_ES 0x93
+
+#define MSMPEG4v1_VIDEO_ES 0x40
+#define MSMPEG4v2_VIDEO_ES 0x41
+#define MSMPEG4v3_VIDEO_ES 0x42
+#define MPEG4_VIDEO_ES 0x50
+
+#define UNKNOWN_ES 0xFF
+
/* Structures exported to the decoders */
/*****************************************************************************
*****************************************************************************/
typedef struct data_packet_s
{
- /* Nothing before this line, the code relies on that */
- byte_t * p_buffer; /* raw data packet */
+ /* Used to chain the packets that carry data for a same PES or PSI */
+ struct data_packet_s * p_next;
- /* Decoders information */
+ /* start of the PS or TS packet */
+ byte_t * p_demux_start;
+ /* start of the PES payload in this packet */
byte_t * p_payload_start;
- /* start of the PES payload in this packet */
- byte_t * p_payload_end; /* guess ? :-) */
- boolean_t b_discard_payload; /* is the packet messed up ? */
-
- int * pi_refcount;
+ byte_t * p_payload_end; /* guess ? :-) */
+ /* is the packet messed up ? */
+ boolean_t b_discard_payload;
- /* Used to chain the TS packets that carry data for a same PES or PSI */
- struct data_packet_s * p_next;
+ /* pointer to the real data */
+ struct data_buffer_s * p_buffer;
} data_packet_t;
/*****************************************************************************
*****************************************************************************/
typedef struct pes_packet_s
{
+ /* Chained list to the next PES packet (depending on the context) */
+ struct pes_packet_s * p_next;
+
/* PES properties */
boolean_t b_data_alignment; /* used to find the beginning of
* a video or audio unit */
int i_rate; /* current pace of reading
* (see stream_control.h) */
- int i_pes_size; /* size of the current PES packet */
+ unsigned int i_pes_size; /* size of the current PES packet */
- /* Pointers to packets (packets are then linked by the p_prev and
- p_next fields of the data_packet_t struct) */
+ /* Chained list to packets */
data_packet_t * p_first; /* The first packet contained by this
* PES (used by decoders). */
+ data_packet_t * p_last; /* The last packet contained by this
+ PES (used by the buffer allocator) */
+ unsigned int i_nb_data; /* Number of data packets in the chained
+ list */
} pes_packet_t;
/*****************************************************************************
vlc_cond_t data_wait; /* fifo data conditional variable */
/* Data */
- pes_packet_t * buffer[FIFO_SIZE + 1];
- int i_start;
- int i_end;
+ pes_packet_t * p_first;
+ pes_packet_t ** pp_last;
+ int i_depth; /* number of PES packets in the stack */
/* Communication interface between input and decoders */
boolean_t b_die; /* the decoder should return now */
boolean_t b_error; /* the decoder is in an error loop */
- void * p_packets_mgt; /* packets management services
- * data (netlist...) */
- void (* pf_delete_pes)( void *, pes_packet_t * );
- /* function to use when releasing a PES */
+ struct input_buffers_s *p_packets_mgt; /* packets management services
+ * data */
} decoder_fifo_t;
-/* Macros to manage a decoder_fifo_t structure. Please remember to take
- * data_lock before using them. */
-#define DECODER_FIFO_ISEMPTY( fifo ) ( (fifo).i_start == (fifo).i_end )
-#define DECODER_FIFO_ISFULL( fifo ) ( ( ((fifo).i_end + 1 - (fifo).i_start)\
- & FIFO_SIZE ) == 0 )
-#define DECODER_FIFO_START( fifo ) ( (fifo).buffer[ (fifo).i_start ] )
-#define DECODER_FIFO_INCSTART( fifo ) ( (fifo).i_start = ((fifo).i_start + 1)\
- & FIFO_SIZE )
-#define DECODER_FIFO_END( fifo ) ( (fifo).buffer[ (fifo).i_end ] )
-#define DECODER_FIFO_INCEND( fifo ) ( (fifo).i_end = ((fifo).i_end + 1) \
- & FIFO_SIZE )
-
/*****************************************************************************
* bit_fifo_t : bit fifo descriptor
*****************************************************************************
/* The decoder fifo contains the data of the PES stream */
decoder_fifo_t * p_decoder_fifo;
- /* Function to jump to the next data packet */
- void (* pf_next_data_packet)( struct bit_stream_s * );
-
/* Callback to the decoder used when changing data packets ; set
* to NULL if your decoder doesn't need it. */
void (* pf_bitstream_callback)( struct bit_stream_s *,
/* Optional argument to the callback */
void * p_callback_arg;
+ /*
+ * PTS retrieval
+ */
+ mtime_t i_pts, i_dts;
+ byte_t * p_pts_validity;
+
/*
* Byte structures
*/
/* Current data packet (in the current PES packet of the PES stream) */
data_packet_t * p_data;
- /* Pointer to the next byte that is to be read (in the current TS packet) */
+ /* Pointer to the next byte that is to be read (in the current packet) */
byte_t * p_byte;
- /* Pointer to the last byte that is to be read (in the current TS packet */
+ /* Pointer to the last byte that is to be read (in the current packet */
byte_t * p_end;
+ /* Temporary buffer in case we're not aligned when changing data packets */
+ WORD_TYPE i_showbits_buffer;
+ data_packet_t showbits_data;
} bit_stream_t;
/*****************************************************************************
#if (WORD_TYPE == u32)
# define WORD_AT U32_AT
+# define WORD_SIGNED s32
#elif (WORD_TYPE == u64)
# define WORD_AT U64_AT
+# define WORD_SIGNED s64
#else
# error Unsupported WORD_TYPE
#endif
/*****************************************************************************
- * Protoypes from input_ext-dec.c
+ * Prototypes from input_ext-dec.c
*****************************************************************************/
+#ifndef __PLUGIN__
+void InitBitstream ( struct bit_stream_s *, struct decoder_fifo_s *,
+ void (* pf_bitstream_callback)( struct bit_stream_s *,
+ boolean_t ),
+ void * p_callback_arg );
+boolean_t NextDataPacket( struct decoder_fifo_s *, struct data_packet_s ** );
+void BitstreamNextDataPacket( struct bit_stream_s * );
u32 UnalignedShowBits( struct bit_stream_s *, unsigned int );
void UnalignedRemoveBits( struct bit_stream_s * );
u32 UnalignedGetBits( struct bit_stream_s *, unsigned int );
+void CurrentPTS( struct bit_stream_s *, mtime_t *, mtime_t * );
+#else
+# define InitBitstream p_symbols->InitBitstream
+# define NextDataPacket p_symbols->NextDataPacket
+# define BitstreamNextDataPacket p_symbols->BitstreamNextDataPacket
+# define UnalignedShowBits p_symbols->UnalignedShowBits
+# define UnalignedRemoveBits p_symbols->UnalignedRemoveBits
+# define UnalignedGetBits p_symbols->UnalignedGetBits
+# define CurrentPTS p_symbols->CurrentPTS
+#endif
/*****************************************************************************
* AlignWord : fill in the bit buffer so that the byte pointer be aligned
* on a word boundary (XXX: there must be at least sizeof(WORD_TYPE) - 1
* empty bytes in the bit buffer)
*****************************************************************************/
-static __inline__ void AlignWord( bit_stream_t * p_bit_stream )
+static inline void AlignWord( bit_stream_t * p_bit_stream )
{
while( (ptrdiff_t)p_bit_stream->p_byte
& (sizeof(WORD_TYPE) - 1) )
}
else
{
- p_bit_stream->pf_next_data_packet( p_bit_stream );
+ BitstreamNextDataPacket( p_bit_stream );
p_bit_stream->fifo.buffer |= *(p_bit_stream->p_byte++)
<< (8 * sizeof(WORD_TYPE) - 8
- p_bit_stream->fifo.i_available);
/*****************************************************************************
* ShowBits : return i_bits bits from the bit stream
*****************************************************************************/
-static __inline__ u32 ShowBits( bit_stream_t * p_bit_stream,
- unsigned int i_bits )
+static inline u32 ShowBits( bit_stream_t * p_bit_stream,
+ unsigned int i_bits )
{
if( p_bit_stream->fifo.i_available >= i_bits )
{
>> (8 * sizeof(WORD_TYPE) - i_bits) );
}
- return UnalignedShowBits( p_bit_stream, i_bits );
+ return( UnalignedShowBits( p_bit_stream, i_bits ) );
+}
+
+/*****************************************************************************
+ * ShowSignedBits : return i_bits bits from the bit stream, using signed
+ * arithmetic
+ *****************************************************************************/
+static inline s32 ShowSignedBits( bit_stream_t * p_bit_stream,
+ unsigned int i_bits )
+{
+ if( p_bit_stream->fifo.i_available >= i_bits )
+ {
+ return( (WORD_SIGNED)p_bit_stream->fifo.buffer
+ >> (8 * sizeof(WORD_TYPE) - i_bits) );
+ }
+
+ /* You can probably do something a little faster, but now I'm tired. */
+ return( (WORD_SIGNED)(ShowBits( p_bit_stream, i_bits ) << (32 - i_bits))
+ >> (32 - i_bits) );
}
/*****************************************************************************
* RemoveBits : removes i_bits bits from the bit buffer
* XXX: do not use for 32 bits, see RemoveBits32
*****************************************************************************/
-static __inline__ void RemoveBits( bit_stream_t * p_bit_stream,
- unsigned int i_bits )
+static inline void RemoveBits( bit_stream_t * p_bit_stream,
+ unsigned int i_bits )
{
p_bit_stream->fifo.i_available -= i_bits;
* refill it)
*****************************************************************************/
#if (WORD_TYPE == u32)
-static __inline__ void RemoveBits32( bit_stream_t * p_bit_stream )
+static inline void RemoveBits32( bit_stream_t * p_bit_stream )
{
if( p_bit_stream->p_byte <= p_bit_stream->p_end - sizeof(WORD_TYPE) )
{
* GetBits : returns i_bits bits from the bit stream and removes them
* XXX: do not use for 32 bits, see GetBits32
*****************************************************************************/
-static __inline__ u32 GetBits( bit_stream_t * p_bit_stream,
- unsigned int i_bits )
+static inline u32 GetBits( bit_stream_t * p_bit_stream,
+ unsigned int i_bits )
{
u32 i_result;
return UnalignedGetBits( p_bit_stream, i_bits );
}
+/*****************************************************************************
+ * GetSignedBits : returns i_bits bits from the bit stream and removes them,
+ * using signed arithmetic
+ * XXX: do not use for 32 bits
+ *****************************************************************************/
+static inline s32 GetSignedBits( bit_stream_t * p_bit_stream,
+ unsigned int i_bits )
+{
+ if( p_bit_stream->fifo.i_available >= i_bits )
+ {
+ s32 i_result;
+
+ p_bit_stream->fifo.i_available -= i_bits;
+ i_result = (WORD_SIGNED)p_bit_stream->fifo.buffer
+ >> (8 * sizeof(WORD_TYPE) - i_bits);
+ p_bit_stream->fifo.buffer <<= i_bits;
+ return( i_result );
+ }
+
+ /* You can probably do something a little faster, but now I'm tired. */
+ return( (WORD_SIGNED)(GetBits( p_bit_stream, i_bits ) << (32 - i_bits))
+ >> (32 - i_bits) );
+}
+
/*****************************************************************************
* GetBits32 : returns 32 bits from the bit stream and removes them
*****************************************************************************/
#if (WORD_TYPE == u32)
-static __inline__ u32 GetBits32( bit_stream_t * p_bit_stream )
+static inline u32 GetBits32( bit_stream_t * p_bit_stream )
{
u32 i_result;
/*****************************************************************************
* RealignBits : realigns the bit buffer on an 8-bit boundary
*****************************************************************************/
-static __inline__ void RealignBits( bit_stream_t * p_bit_stream )
+static inline void RealignBits( bit_stream_t * p_bit_stream )
{
p_bit_stream->fifo.buffer <<= (p_bit_stream->fifo.i_available & 0x7);
p_bit_stream->fifo.i_available &= ~0x7;
* GetChunk : reads a large chunk of data
*****************************************************************************
* The position in the stream must be byte-aligned, if unsure call
- * RealignBits(). p_buffer must to a buffer at least as big as i_buf_len
+ * RealignBits(). p_buffer must point to a buffer at least as big as i_buf_len
* otherwise your code will crash.
*****************************************************************************/
-static __inline__ void GetChunk( bit_stream_t * p_bit_stream,
- byte_t * p_buffer, size_t i_buf_len )
+static inline void GetChunk( bit_stream_t * p_bit_stream,
+ byte_t * p_buffer, size_t i_buf_len )
{
ptrdiff_t i_available;
- if( p_bit_stream->fifo.i_available )
+ /* We need to take care because i_buf_len may be < 4. */
+ while( p_bit_stream->fifo.i_available > 0 && i_buf_len )
{
- *((WORD_TYPE *)p_buffer) = WORD_AT( &p_bit_stream->fifo.buffer );
- p_buffer += p_bit_stream->fifo.i_available >> 3;
- i_buf_len -= p_bit_stream->fifo.i_available >> 3;
- p_bit_stream->fifo.buffer = 0;
- p_bit_stream->fifo.i_available = 0;
+ *p_buffer = p_bit_stream->fifo.buffer >> (8 * sizeof(WORD_TYPE) - 8);
+ p_buffer++;
+ i_buf_len--;
+ p_bit_stream->fifo.buffer <<= 8;
+ p_bit_stream->fifo.i_available -= 8;
}
if( (i_available = p_bit_stream->p_end - p_bit_stream->p_byte)
>= i_buf_len )
{
- memcpy( p_buffer, p_bit_stream->p_byte, i_buf_len );
+ FAST_MEMCPY( p_buffer, p_bit_stream->p_byte, i_buf_len );
p_bit_stream->p_byte += i_buf_len;
}
else
{
do
{
- memcpy( p_buffer, p_bit_stream->p_byte, i_available );
+ FAST_MEMCPY( p_buffer, p_bit_stream->p_byte, i_available );
p_bit_stream->p_byte = p_bit_stream->p_end;
p_buffer += i_available;
i_buf_len -= i_available;
- p_bit_stream->pf_next_data_packet( p_bit_stream );
+ BitstreamNextDataPacket( p_bit_stream );
+ if( p_bit_stream->p_decoder_fifo->b_die )
+ return;
}
while( (i_available = p_bit_stream->p_end - p_bit_stream->p_byte)
- <= i_buf_len && !p_bit_stream->p_decoder_fifo->b_die );
+ <= i_buf_len );
if( i_buf_len )
{
- memcpy( p_buffer, p_bit_stream->p_byte, i_buf_len );
+ FAST_MEMCPY( p_buffer, p_bit_stream->p_byte, i_buf_len );
p_bit_stream->p_byte += i_buf_len;
}
}
}
-/*
- * The following functions are now deprecated.
- */
-
-static __inline__ byte_t _GetByte( bit_stream_t * p_bit_stream )
-{
- if ( p_bit_stream->p_byte >= p_bit_stream->p_end )
- {
- p_bit_stream->pf_next_data_packet( p_bit_stream );
- }
-
- return( *(p_bit_stream->p_byte++) );
-}
-
-static __inline__ void NeedBits( bit_stream_t * p_bit_stream, int i_bits )
-{
- while ( p_bit_stream->fifo.i_available < i_bits )
- {
- p_bit_stream->fifo.buffer |= ((WORD_TYPE)_GetByte( p_bit_stream ))
- << (8 * sizeof(WORD_TYPE) - 8
- - p_bit_stream->fifo.i_available);
- p_bit_stream->fifo.i_available += 8;
- }
-}
-
-static __inline__ void DumpBits( bit_stream_t * p_bit_stream, int i_bits )
-{
- p_bit_stream->fifo.buffer <<= i_bits;
- p_bit_stream->fifo.i_available -= i_bits;
-}
-
-
/*
* Communication interface between input and decoders
*/
u16 i_id;
u8 i_type; /* type of the elementary stream */
+ void * p_demux_data;
struct stream_ctrl_s * p_stream_ctrl;
struct decoder_fifo_s * p_decoder_fifo;
- void (* pf_init_bit_stream)( struct bit_stream_s *,
- struct decoder_fifo_s * );
} decoder_config_t;
/*****************************************************************************
- * vdec_config_t
- *****************************************************************************
- * Pointers given to video decoders threads.
+ * Prototypes from input_dec.c
*****************************************************************************/
-struct vout_thread_s;
-
-typedef struct vdec_config_s
-{
- struct vout_thread_s * p_vout;
-
- struct picture_s * (* pf_create_picture)( struct vout_thread_s *,
- int i_type, int i_width,
- int i_height );
- void (* pf_destroy_picture)( struct vout_thread_s *,
- struct picture_s * );
- void (* pf_display_picture)( struct vout_thread_s *,
- struct picture_s * );
- void (* pf_date_picture)( struct vout_thread_s *,
- struct picture_s *, mtime_t date );
- void (* pf_link_picture)( struct vout_thread_s *,
- struct picture_s *, mtime_t date );
- void (* pf_unlink_picture)( struct vout_thread_s *,
- struct picture_s *, mtime_t date );
- struct subpicture_s *(* pf_create_subpicture)( struct vout_thread_s *,
- int i_type, int i_size );
- void (* pf_destroy_subpicture)( struct vout_thread_s *,
- struct subpicture_s * );
- void (* pf_display_subpicture)( struct vout_thread_s *,
- struct subpicture_s * );
-
- decoder_config_t decoder_config;
-} vdec_config_t;
-
-/*****************************************************************************
- * adec_config_t
- *****************************************************************************
- * Pointers given to audio decoders threads.
- *****************************************************************************/
-struct aout_thread_s;
-
-typedef struct adec_config_s
-{
- struct aout_thread_s * p_aout;
-
- struct aout_fifo_s * (* pf_create_fifo)( struct aout_thread_s *,
- struct aout_fifo_s * );
- void (* pf_destroy_fifo)( struct aout_thread_s *);
-
- decoder_config_t decoder_config;
-} adec_config_t;
-
-
-/*
- * Communication interface between decoders and input
- */
+#ifndef __PLUGIN__
+void DecoderError ( struct decoder_fifo_s * p_fifo );
+#else
+# define DecoderError p_symbols->DecoderError
+#endif
-/*****************************************************************************
- * decoder_capabilities_t
- *****************************************************************************
- * Structure returned by a call to GetCapabilities() of the decoder.
- *****************************************************************************/
-typedef struct decoder_capabilities_s
-{
- int i_dec_type;
- u8 i_stream_type; /* == i_type in es_descriptor_t */
- int i_weight; /* for a given stream type, the decoder
- * with higher weight will be spawned */
-
- vlc_thread_t (* pf_create_thread)( void * );
-} decoder_capabilities_t;
-
-/* Decoder types */
-#define NONE_D 0
-#define VIDEO_D 1
-#define AUDIO_D 2
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