* input_ext-dec.h: structures exported to the VideoLAN decoders
*****************************************************************************
* Copyright (C) 1999-2001 VideoLAN
- * $Id: input_ext-dec.h,v 1.47 2001/12/27 03:47:08 massiot Exp $
+ * $Id: input_ext-dec.h,v 1.80 2003/09/02 20:19:25 gbazin 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 norm : */
-#define DVD_SPU_ES 0x82
-#define LPCM_AUDIO_ES 0x83
-#define UNKNOWN_ES 0xFF
+#ifndef _VLC_INPUT_EXT_DEC_H
+#define _VLC_INPUT_EXT_DEC_H 1
/* Structures exported to the decoders */
*****************************************************************************
* Describe a data packet.
*****************************************************************************/
-typedef struct data_packet_s
+struct data_packet_t
{
- /* Decoders information */
- byte_t * p_demux_start; /* start of the PS or TS 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 ? */
+ /* Used to chain the packets that carry data for a same PES or PSI */
+ data_packet_t * p_next;
- /* Used to chain the TS packets that carry data for a same PES or PSI */
- struct data_packet_s * p_next;
+ /* 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;
+ byte_t * p_payload_end; /* guess ? :-) */
+ /* is the packet messed up ? */
+ vlc_bool_t b_discard_payload;
- /* Buffer manager information */
- byte_t * p_buffer; /* raw data packet */
- unsigned int i_size; /* buffer size */
-} data_packet_t;
+ /* pointer to the real data */
+ data_buffer_t * p_buffer;
+};
/*****************************************************************************
* pes_packet_t
* Describes an PES packet, with its properties, and pointers to the TS packets
* containing it.
*****************************************************************************/
-typedef struct pes_packet_s
+struct pes_packet_t
{
+ /* Chained list to the next PES packet (depending on the context) */
+ pes_packet_t * p_next;
+
/* PES properties */
- boolean_t b_data_alignment; /* used to find the beginning of
- * a video or audio unit */
- boolean_t b_discontinuity; /* This packet doesn't follow the
- * previous one */
+ vlc_bool_t b_data_alignment; /* used to find the beginning of
+ * a video or audio unit */
+ vlc_bool_t b_discontinuity; /* This packet doesn't follow the
+ * previous one */
- mtime_t i_pts; /* PTS for this packet (zero if unset) */
- mtime_t i_dts; /* DTS for this packet (zero if unset) */
- int i_rate; /* current pace of reading
- * (see stream_control.h) */
+ mtime_t i_pts; /* PTS for this packet (zero if unset) */
+ mtime_t i_dts; /* DTS for this packet (zero if unset) */
+ int i_rate; /* current reading pace (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 */
/* Chained list to packets */
- data_packet_t * p_first; /* The first packet contained by this
+ 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) */
- int i_nb_data; /* Number of data packets in the chained
- list */
-
- /* Chained list used by the input buffers manager */
- struct pes_packet_s * p_next;
-} pes_packet_t;
+ 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 */
+};
/*****************************************************************************
* decoder_fifo_t
*****************************************************************************
* This rotative FIFO contains PES packets that are to be decoded.
*****************************************************************************/
-typedef struct decoder_fifo_s
+struct decoder_fifo_t
{
+ VLC_COMMON_MEMBERS
+
/* Thread structures */
- vlc_mutex_t data_lock; /* fifo data lock */
- vlc_cond_t data_wait; /* fifo data conditional variable */
+ vlc_mutex_t data_lock; /* fifo data lock */
+ vlc_cond_t data_wait; /* fifo data conditional variable */
/* Data */
- pes_packet_t * p_first;
- pes_packet_t ** pp_last;
- int i_depth; /* number of PES packets in the stack */
+ 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 */
-} decoder_fifo_t;
+ input_buffers_t *p_packets_mgt; /* packets management services data */
+
+ /* Standard pointers given to the decoders as a toolbox. */
+ uint16_t i_id;
+ vlc_fourcc_t i_fourcc;
+ es_sys_t * p_demux_data;
+ stream_ctrl_t * p_stream_ctrl;
+ sout_instance_t * p_sout;
+ void * p_waveformatex;
+ void * p_bitmapinfoheader;
+
+ decoder_t * p_dec;
+};
+
+/*****************************************************************************
+ * decoder_t
+ *****************************************************************************
+ * The decoder descriptor.
+ *****************************************************************************/
+struct decoder_t
+{
+ VLC_COMMON_MEMBERS
+
+ /* Module properties */
+ module_t * p_module;
+ decoder_sys_t * p_sys;
+ int ( * pf_init ) ( decoder_t * );
+ int ( * pf_decode )( decoder_t *, block_t * );
+ int ( * pf_end ) ( decoder_t * );
+
+ /* Input properties */
+ decoder_fifo_t * p_fifo; /* stores the PES stream data */
+
+ /* Tmp field for old decoder api */
+ int ( * pf_run ) ( decoder_fifo_t * );
+};
/*****************************************************************************
* bit_fifo_t : bit fifo descriptor
* This type describes a bit fifo used to store bits while working with the
* input stream at the bit level.
*****************************************************************************/
-typedef u32 WORD_TYPE;
+typedef uint32_t WORD_TYPE;
-typedef struct bit_fifo_s
+typedef struct bit_fifo_t
{
/* This unsigned integer allows us to work at the bit level. This buffer
* can contain 32 bits, and the used space can be found on the MSb's side
* This type, based on a PES stream, includes all the structures needed to
* handle the input stream like a bit stream.
*****************************************************************************/
-typedef struct bit_stream_s
+struct bit_stream_t
{
/*
* Bit structures
*/
- bit_fifo_t fifo;
+ bit_fifo_t fifo;
/*
* Input structures
*/
/* 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 * );
+ decoder_fifo_t * p_decoder_fifo;
/* 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 *,
- boolean_t b_new_pes );
+ void (* pf_bitstream_callback)( bit_stream_t *, vlc_bool_t );
/* Optional argument to the callback */
- void * p_callback_arg;
+ 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) */
+ /* Current PES packet (extracted from the PES stream) */
+ pes_packet_t * p_pes;
+ /* Current data packet (in the current PES packet) */
data_packet_t * p_data;
/* Pointer to the next byte that is to be read (in the current packet) */
byte_t * p_byte;
/* 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;
+};
/*****************************************************************************
* Inline functions used by the decoders to read bit_stream_t
* results will be returned. Use RealignBits() if unsure.
*/
-#if (WORD_TYPE == u32)
+#if (WORD_TYPE == uint32_t)
# define WORD_AT U32_AT
-# define WORD_SIGNED s32
-#elif (WORD_TYPE == u64)
+# define WORD_SIGNED int32_t
+#elif (WORD_TYPE == uint64_t)
# define WORD_AT U64_AT
-# define WORD_SIGNED s64
+# define WORD_SIGNED int64_t
#else
# error Unsupported WORD_TYPE
#endif
/*****************************************************************************
- * Protoypes from input_ext-dec.c
+ * Prototypes from input_ext-dec.c
*****************************************************************************/
-#ifndef PLUGIN
-u32 UnalignedShowBits( struct bit_stream_s *, unsigned int );
-void UnalignedRemoveBits( struct bit_stream_s * );
-u32 UnalignedGetBits( struct bit_stream_s *, unsigned int );
-#else
-# define UnalignedShowBits p_symbols->UnalignedShowBits
-# define UnalignedRemoveBits p_symbols->UnalignedRemoveBits
-# define UnalignedGetBits p_symbols->UnalignedGetBits
-#endif
+VLC_EXPORT( void, input_ExtractPES, ( decoder_fifo_t *, pes_packet_t ** ) );
+VLC_EXPORT( void, input_DeletePES, ( input_buffers_t *, pes_packet_t * ) );
+VLC_EXPORT( int, InitBitstream, ( bit_stream_t *, decoder_fifo_t *, void ( * )( bit_stream_t *, vlc_bool_t ), void * p_callback_arg ) );
+VLC_EXPORT( vlc_bool_t, NextDataPacket, ( decoder_fifo_t *, bit_stream_t * ) );
+VLC_EXPORT( void, BitstreamNextDataPacket, ( bit_stream_t * ) );
+VLC_EXPORT( uint32_t, UnalignedShowBits, ( bit_stream_t *, unsigned int ) );
+VLC_EXPORT( void, UnalignedRemoveBits, ( bit_stream_t * ) );
+VLC_EXPORT( uint32_t, UnalignedGetBits, ( bit_stream_t *, unsigned int ) );
+VLC_EXPORT( void, CloseBitstream, ( bit_stream_t * ) );
+VLC_EXPORT( void, CurrentPTS, ( bit_stream_t *, mtime_t *, mtime_t * ) );
+VLC_EXPORT( void, NextPTS, ( bit_stream_t *, mtime_t *, mtime_t * ) );
/*****************************************************************************
* 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 uint32_t ShowBits( bit_stream_t * p_bit_stream,
+ unsigned int i_bits )
{
- if( p_bit_stream->fifo.i_available >= i_bits )
+ if( (unsigned int)p_bit_stream->fifo.i_available >= i_bits )
{
return( p_bit_stream->fifo.buffer >> (8 * sizeof(WORD_TYPE) - i_bits) );
}
* ShowSignedBits : return i_bits bits from the bit stream, using signed
* arithmetic
*****************************************************************************/
-static __inline__ s32 ShowSignedBits( bit_stream_t * p_bit_stream,
+static inline int32_t ShowSignedBits( bit_stream_t * p_bit_stream,
unsigned int i_bits )
{
- if( p_bit_stream->fifo.i_available >= i_bits )
+ if( (unsigned int)p_bit_stream->fifo.i_available >= i_bits )
{
return( (WORD_SIGNED)p_bit_stream->fifo.buffer
>> (8 * sizeof(WORD_TYPE) - 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;
{
p_bit_stream->fifo.buffer = WORD_AT( p_bit_stream->p_byte )
<< ( -p_bit_stream->fifo.i_available );
- ((WORD_TYPE *)p_bit_stream->p_byte)++;
+ p_bit_stream->p_byte =
+ (byte_t *) ( ((WORD_TYPE *)p_bit_stream->p_byte) + 1 );
p_bit_stream->fifo.i_available += sizeof(WORD_TYPE) * 8;
return;
}
* RemoveBits32 : removes 32 bits from the bit buffer (and as a side effect,
* refill it)
*****************************************************************************/
-#if (WORD_TYPE == u32)
-static __inline__ void RemoveBits32( bit_stream_t * p_bit_stream )
+#if (WORD_TYPE == uint32_t)
+static inline void RemoveBits32( bit_stream_t * p_bit_stream )
{
if( p_bit_stream->p_byte <= p_bit_stream->p_end - sizeof(WORD_TYPE) )
{
{
p_bit_stream->fifo.buffer = WORD_AT( p_bit_stream->p_byte )
<< (32 - p_bit_stream->fifo.i_available);
- ((WORD_TYPE *)p_bit_stream->p_byte)++;
+ p_bit_stream->p_byte =
+ (byte_t *) ( ((WORD_TYPE *)p_bit_stream->p_byte) + 1 );
return;
}
- ((WORD_TYPE *)p_bit_stream->p_byte)++;
+ p_bit_stream->p_byte =
+ (byte_t *) ( ((WORD_TYPE *)p_bit_stream->p_byte) + 1 );
return;
}
* 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 uint32_t GetBits( bit_stream_t * p_bit_stream,
+ unsigned int i_bits )
{
- u32 i_result;
+ uint32_t i_result;
p_bit_stream->fifo.i_available -= i_bits;
i_result = p_bit_stream->fifo.buffer
>> (8 * sizeof(WORD_TYPE) - i_bits);
p_bit_stream->fifo.buffer = WORD_AT( p_bit_stream->p_byte );
- ((WORD_TYPE *)p_bit_stream->p_byte)++;
+ p_bit_stream->p_byte =
+ (byte_t *) ( ((WORD_TYPE *)p_bit_stream->p_byte) + 1 );
i_result |= p_bit_stream->fifo.buffer
>> (8 * sizeof(WORD_TYPE)
+ p_bit_stream->fifo.i_available);
* using signed arithmetic
* XXX: do not use for 32 bits
*****************************************************************************/
-static __inline__ s32 GetSignedBits( bit_stream_t * p_bit_stream,
+static inline int32_t GetSignedBits( bit_stream_t * p_bit_stream,
unsigned int i_bits )
{
- if( p_bit_stream->fifo.i_available >= i_bits )
+ if( (unsigned int)p_bit_stream->fifo.i_available >= i_bits )
{
- s32 i_result;
+ int32_t i_result;
p_bit_stream->fifo.i_available -= i_bits;
i_result = (WORD_SIGNED)p_bit_stream->fifo.buffer
/*****************************************************************************
* 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 )
+#if (WORD_TYPE == uint32_t)
+static inline uint32_t GetBits32( bit_stream_t * p_bit_stream )
{
- u32 i_result;
+ uint32_t i_result;
if( p_bit_stream->fifo.i_available == 32 )
{
{
i_result = p_bit_stream->fifo.buffer;
p_bit_stream->fifo.buffer = WORD_AT( p_bit_stream->p_byte );
- ((WORD_TYPE *)p_bit_stream->p_byte)++;
+ p_bit_stream->p_byte =
+ (byte_t *) ( ((WORD_TYPE *)p_bit_stream->p_byte) + 1 );
i_result |= p_bit_stream->fifo.buffer
>> (p_bit_stream->fifo.i_available);
p_bit_stream->fifo.buffer <<= (32 - p_bit_stream->fifo.i_available);
}
i_result = WORD_AT( p_bit_stream->p_byte );
- ((WORD_TYPE *)p_bit_stream->p_byte)++;
+ p_bit_stream->p_byte =
+ (byte_t *) ( ((WORD_TYPE *)p_bit_stream->p_byte) + 1 );
return( 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;
* 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;
p_bit_stream->fifo.i_available -= 8;
}
- if( (i_available = p_bit_stream->p_end - p_bit_stream->p_byte)
- >= i_buf_len )
+ i_available = p_bit_stream->p_end - p_bit_stream->p_byte;
+ if( i_available >= (ptrdiff_t)i_buf_len )
{
- p_main->fast_memcpy( p_buffer, p_bit_stream->p_byte, i_buf_len );
+ p_bit_stream->p_decoder_fifo->p_vlc->pf_memcpy( p_buffer,
+ p_bit_stream->p_byte, i_buf_len );
p_bit_stream->p_byte += i_buf_len;
}
else
{
do
{
- p_main->fast_memcpy( p_buffer, p_bit_stream->p_byte, i_available );
+ p_bit_stream->p_decoder_fifo->p_vlc->pf_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 );
+ <= (ptrdiff_t)i_buf_len );
if( i_buf_len )
{
- p_main->fast_memcpy( p_buffer, p_bit_stream->p_byte, i_buf_len );
+ p_bit_stream->p_decoder_fifo->p_vlc->pf_memcpy( p_buffer,
+ p_bit_stream->p_byte, i_buf_len );
p_bit_stream->p_byte += i_buf_len;
}
}
*/
/*****************************************************************************
- * decoder_config_t
- *****************************************************************************
- * Standard pointers given to the decoders as a toolbox.
+ * Prototypes from input_dec.c
*****************************************************************************/
-typedef struct decoder_config_s
-{
- u16 i_id;
- u8 i_type; /* type of the elementary stream */
-
- 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 *,
- void (* pf_bitstream_callback)( struct bit_stream_s *,
- boolean_t ),
- void * );
-} decoder_config_t;
+VLC_EXPORT( void, DecoderError, ( decoder_fifo_t * p_fifo ) );
+#endif /* "input_ext-dec.h" */
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