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vlc-2-2
Commit e229f269 authored by Christophe Massiot's avatar Christophe Massiot
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Suite du video_parser et du video_decoder.

parent ce68167e
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include/video_decoder.h.new 0 → 100644
View file @ e229f269
/*****************************************************************************
* video_decoder.h : video decoder thread
* (c)1999 VideoLAN
*****************************************************************************
*****************************************************************************
* Requires:
* "config.h"
* "common.h"
* "mtime.h"
* "vlc_thread.h"
* "input.h"
* "video.h"
* "video_output.h"
* "decoder_fifo.h"
*****************************************************************************/
/*****************************************************************************
* vdec_thread_t: video decoder thread descriptor
*****************************************************************************
* ??
*****************************************************************************/
typedef struct vdec_thread_s
{
/* Thread properties and locks */
boolean_t b_die; /* `die' flag */
boolean_t b_run; /* `run' flag */
boolean_t b_error; /* `error' flag */
boolean_t b_active; /* `active' flag */
vlc_thread_t thread_id; /* id for thread functions */
/* Thread configuration */
/* ?? */
/*??*/
// int *pi_status;
/* Input properties */
video_parser_t * p_vpar; /* video_parser thread */
#ifdef STATS
/* Statistics */
count_t c_loops; /* number of loops */
count_t c_idle_loops; /* number of idle loops */
count_t c_decoded_pictures; /* number of pictures decoded */
count_t c_decoded_i_pictures; /* number of I pictures decoded */
count_t c_decoded_p_pictures; /* number of P pictures decoded */
count_t c_decoded_b_pictures; /* number of B pictures decoded */
#endif
} vdec_thread_t;
/*****************************************************************************
* Prototypes
*****************************************************************************/
/* Thread management functions */
vdec_thread_t * vdec_CreateThread ( vpar_thread_t *p_vpar /*, int *pi_status */ );
void vdec_DestroyThread ( vdec_thread_t *p_vdec /*, int *pi_status */ );
/* Time management functions */
/* ?? */
/* Dynamic thread settings */
/* ?? */
include/video_fifo.h
View file @ e229f269
......@@ -29,7 +29,7 @@
/*****************************************************************************
* video_fifo_t
*****************************************************************************
* This rotative FIFO contains undecoded pictures that are to be decoded
* This rotative FIFO contains undecoded macroblocks that are to be decoded
*****************************************************************************/
typedef struct video_fifo_s
{
......@@ -37,7 +37,7 @@ typedef struct video_fifo_s
vlc_cond_t wait; /* fifo data conditional variable */
/* buffer is an array of undec_picture_t pointers */
undec_picture_t * buffer[VFIFO_SIZE + 1];
macroblock_t * buffer[VFIFO_SIZE + 1];
int i_start;
int i_end;
......@@ -48,22 +48,22 @@ typedef struct video_fifo_s
* video_buffer_t
*****************************************************************************
* This structure enables the parser to maintain a list of free
* undec_picture_t structures
* macroblock_t structures
*****************************************************************************/
typedef struct video_buffer_s
{
vlc_mutex_t lock; /* buffer data lock */
undec_picture_t p_undec_p[VFIFO_SIZE + 1];
undec_picture_t * pp_undec_free[VFIFO_SIZE+1]; /* this is a LIFO */
macroblock_t p_macroblocks[VFIFO_SIZE + 1];
macroblock_t * pp_mb_free[VFIFO_SIZE+1]; /* this is a LIFO */
int i_index;
} video_buffer_t;
/*****************************************************************************
* Prototypes
*****************************************************************************/
undec_picture_t * vpar_GetPicture( video_fifo_t * p_fifo );
undec_picture_t * vpar_NewPicture( video_fifo_t * p_fifo );
void vpar_DecodePicture( video_fifo_t * p_fifo, undec_picture_t * p_undec_p );
void vpar_ReleasePicture( video_fifo_t * p_fifo, undec_picture_t * p_undec_p );
void vpar_DestroyPicture( video_fifo_t * p_fifo, undec_picture_t * p_undec_p );
macroblock_t * vpar_GetMacroblock( video_fifo_t * p_fifo );
macroblock_t * vpar_NewMacroblock( video_fifo_t * p_fifo );
void vpar_DecodeMacroblock( video_fifo_t * p_fifo, macroblock_t * p_mb );
void vpar_ReleaseMacroblock( video_fifo_t * p_fifo, macroblock_t * p_mb );
void vpar_DestroyMacroblock( video_fifo_t * p_fifo, macroblock_t * p_mb );
include/video_parser.h
View file @ e229f269
/*******************************************************************************
/*****************************************************************************
* video_parser.h : video parser thread
* (c)1999 VideoLAN
*******************************************************************************
*******************************************************************************
*****************************************************************************
*****************************************************************************
* Requires:
* "config.h"
* "common.h"
......@@ -13,44 +13,22 @@
* "video_output.h"
* "decoder_fifo.h"
* "video_fifo.h"
*******************************************************************************/
* "vpar_headers.h"
*****************************************************************************/
/*******************************************************************************
* sequence_t : sequence descriptor
*******************************************************************************
* ??
*******************************************************************************/
typedef struct sequence_s
{
u16 i_height, i_width;
u16 i_mb_height, i_mb_width;
unsigned int i_aspect_ratio;
double d_frame_rate;
unsigned int i_chroma_format;
boolean_t b_mpeg2;
boolean_t b_progressive;
/* Parser context */
picture_t * p_forward, p_backward;
pel_lookup_table_t * p_frame_lum_lookup, p_field_lum_lookup;
pel_lookup_table_t * p_frame_chroma_lookup, p_field_chroma_lookup;
quant_matrix_t intra_quant, nonintra_quant;
quant_matrix_t chroma_intra_quant, chroma_nonintra_quant;
} sequence_t;
/*******************************************************************************
/*****************************************************************************
* vpar_thread_t: video parser thread descriptor
*******************************************************************************
*****************************************************************************
* ??
*******************************************************************************/
*****************************************************************************/
typedef struct vpar_thread_s
{
/* Thread properties and locks */
boolean_t b_die; /* `die' flag */
boolean_t b_run; /* `run' flag */
boolean_t b_error; /* `error' flag */
boolean_t b_active; /* `active' flag */
vlc_thread_t thread_id; /* id for thread functions */
boolean_t b_die; /* `die' flag */
boolean_t b_run; /* `run' flag */
boolean_t b_error; /* `error' flag */
boolean_t b_active; /* `active' flag */
vlc_thread_t thread_id; /* id for thread functions */
/* Thread configuration */
/* ?? */
......@@ -59,67 +37,45 @@ typedef struct vpar_thread_s
/* Input properties */
decoder_fifo_t fifo; /* PES input fifo */
decoder_fifo_t fifo; /* PES input fifo */
/* The bit stream structure handles the PES stream at the bit level */
bit_stream_t bit_stream;
/* Output properties */
vout_thread_t * p_vout; /* video output thread */
int i_stream; /* video stream id */
vout_thread_t * p_vout; /* video output thread */
int i_stream; /* video stream id */
/* Decoder properties */
struct vdec_thread_s * p_vdec[MAX_VDEC];
struct vdec_thread_s * p_vdec[NB_VDEC];
video_fifo_t vfifo;
video_buffer_t vbuffer;
/* Parser properties */
sequence_t sequence;
sequence_t sequence;
picture_parsing_t picture;
slice_parsing_t slice;
macroblock_parsing_t mb;
#ifdef STATS
/* Statistics */
count_t c_loops; /* number of loops */
count_t c_idle_loops; /* number of idle loops */
count_t c_sequences; /* number of sequences */
count_t c_pictures; /* number of pictures read */
count_t c_i_pictures; /* number of I pictures read */
count_t c_p_pictures; /* number of P pictures read */
count_t c_b_pictures; /* number of B pictures read */
count_t c_decoded_pictures; /* number of pictures decoded */
count_t c_decoded_i_pictures; /* number of I pictures decoded */
count_t c_decoded_p_pictures; /* number of P pictures decoded */
count_t c_decoded_b_pictures; /* number of B pictures decoded */
count_t c_loops; /* number of loops */
count_t c_idle_loops; /* number of idle loops */
count_t c_sequences; /* number of sequences */
count_t c_pictures; /* number of pictures read */
count_t c_i_pictures; /* number of I pictures read */
count_t c_p_pictures; /* number of P pictures read */
count_t c_b_pictures; /* number of B pictures read */
count_t c_decoded_pictures; /* number of pictures decoded */
count_t c_decoded_i_pictures; /* number of I pictures decoded */
count_t c_decoded_p_pictures; /* number of P pictures decoded */
count_t c_decoded_b_pictures; /* number of B pictures decoded */
#endif
} vpar_thread_t;
/*******************************************************************************
* Standard start codes
*******************************************************************************/
#define PICTURE_START_CODE 0x100
#define SLICE_START_CODE_MIN 0x101
#define SLICE_START_CODE_MAX 0x1AF
#define USER_DATA_START_CODE 0x1B2
#define SEQUENCE_HEADER_CODE 0x1B3
#define SEQUENCE_ERROR_CODE 0x1B4
#define EXTENSION_START_CODE 0x1B5
#define SEQUENCE_END_CODE 0x1B7
#define GROUP_START_CODE 0x1B8
/* extension start code IDs */
#define SEQUENCE_EXTENSION_ID 1
#define SEQUENCE_DISPLAY_EXTENSION_ID 2
#define QUANT_MATRIX_EXTENSION_ID 3
#define COPYRIGHT_EXTENSION_ID 4
#define SEQUENCE_SCALABLE_EXTENSION_ID 5
#define PICTURE_DISPLAY_EXTENSION_ID 7
#define PICTURE_CODING_EXTENSION_ID 8
#define PICTURE_SPATIAL_SCALABLE_EXTENSION_ID 9
#define PICTURE_TEMPORAL_SCALABLE_EXTENSION_ID 10
/*******************************************************************************
/*****************************************************************************
* Prototypes
*******************************************************************************/
*****************************************************************************/
/* Thread management functions */
vpar_thread_t * vpar_CreateThread ( /* video_cfg_t *p_cfg, */ input_thread_t *p_input /*,
......
include/vpar_blocks.h
View file @ e229f269
......@@ -16,16 +16,97 @@
*****************************************************************************/
/*****************************************************************************
* quant_matrix_t : Quantization Matrix
* macroblock_t : information on a macroblock
*****************************************************************************/
typedef struct macroblock_s
{
picture_t * p_picture;
int i_mb_x, i_mb_y;
int i_structure;
int i_l_x, i_l_y; /* position of macroblock (lum) */
int i_c_x, i_c_y; /* position of macroblock (chroma) */
int i_structure;
int i_chroma_nb_blocks; /* nb of bks for a chr comp */
/* IDCT information */
elem_t ppi_blocks[12][64]; /* blocks */
f_idct_t pf_idct[12]; /* sparse IDCT or not ? */
int pi_sparse_pos[12];
/* Motion compensation information */
f_motion_t pf_motion; /* function to use for motion comp */
f_chroma_motion_t pf_chroma_motion;
picture_t * p_backw_top, p_backw_bot;
picture_t * p_forw_top, p_forw_bot;
int i_field_select_backw_top, i_field_select_backw_bot;
int i_field_select_forw_top, i_field_select_forw_bot;
int pi_motion_vectors_backw_top[2];
int pi_motion_vectors_backw_bot[2];
int pi_motion_vectors_forw_top[2];
int pi_motion_vectors_forw_bot[2];
/* AddBlock information */
f_addb_t pf_addb[12];
data_t * p_data[12]; /* positions of blocks in picture */
int i_lum_incr, i_chroma_incr;
} macroblock_t;
/*****************************************************************************
* macroblock_parsing_t : parser context descriptor #3
*****************************************************************************/
typedef struct
{
int i_mb_type, i_motion_type, i_mv_count, i_mv_format;
int i_coded_block_pattern;
boolean_t b_dct_type;
} macroblock_parsing_t;
/*****************************************************************************
* LoadQuantizerScale
*****************************************************************************
* ??
* Quantizer scale factor (ISO/IEC 13818-2 7.4.2.2)
*****************************************************************************/
typedef struct quant_matrix_s
static __inline__ void LoadQuantizerScale( vpar_thread_t * p_vpar )
{
int pi_matrix[64];
boolean_t b_allocated;
/* Has the matrix been allocated by vpar_headers ? */
} quant_matrix_t;
/* Quantization coefficient table */
static unsigned char ppi_quantizer_scale[3][32] =
{
/* MPEG-2 */
{
/* q_scale_type */
/* linear */
0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,
32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62
},
{
/* non-linear */
0, 1, 2, 3, 4, 5, 6, 7, 8, 10,12,14,16,18,20, 22,
24,28,32,36,40,44,48,52,56,64,72,80,88,96,104,112
},
/* MPEG-1 */
{
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31
}
};
p_vpar->slice.i_quantizer_scale = ppi_quantizer_scale
[(!p_vpar->sequence.b_mpeg2 << 1) | p_vpar->picture.b_q_scale_type]
[GetBits( &p_vpar->bit_stream, 5 )];
}
/*****************************************************************************
* Standard codes
*****************************************************************************/
/* Macroblock types */
#define MB_INTRA 1
#define MB_PATTERN 2
#define MB_MOTION_BACKWARD 4
#define MB_MOTION_FORWARD 8
#define MB_QUANT 16
extern int * pi_default_intra_quant;
extern int * pi_default_nonintra_quant;
/* Motion types */
#define MOTION_FIELD 1
#define MOTION_FRAME 2
#define MOTION_16X8 2
#define MOTION_DMV 3
include/vpar_headers.h 0 → 100644
View file @ e229f269
/*****************************************************************************
* vpar_headers.h : video parser : headers parsing
* (c)1999 VideoLAN
*****************************************************************************
*****************************************************************************
* Requires:
* "config.h"
* "common.h"
* "mtime.h"
* "vlc_thread.h"
* "input.h"
* "video.h"
* "video_output.h"
* "decoder_fifo.h"
* "video_fifo.h"
*****************************************************************************/
/*****************************************************************************
* Function pointers
*****************************************************************************/
typedef (void *) f_slice_header_t( vpar_thread_t*, int*, int, elem_t*, u32);
/*****************************************************************************
* quant_matrix_t : Quantization Matrix
*****************************************************************************/
typedef struct quant_matrix_s
{
int pi_matrix[64];
boolean_t b_allocated;
/* Has the matrix been allocated by vpar_headers ? */
} quant_matrix_t;
extern int * pi_default_intra_quant;
extern int * pi_default_nonintra_quant;
/*****************************************************************************
* sequence_t : sequence descriptor
*****************************************************************************/
typedef struct sequence_s
{
u32 i_height, i_width, i_chroma_width, i_size;
u32 i_mb_height, i_mb_width, i_mb_size;
unsigned int i_aspect_ratio;
double d_frame_rate;
unsigned int i_chroma_format;
int i_chroma_nb_blocks;
boolean_t b_mpeg2;
boolean_t b_progressive;
unsigned int i_scalable_mode;
f_slice_header_t pf_slice_header;
quant_matrix_t intra_quant, nonintra_quant;
quant_matrix_t chroma_intra_quant, chroma_nonintra_quant;
(void *) pf_decode_mv( vpar_thread_t *, int );
(void *) pf_decode_pattern( vpar_thread_t * );
/* Parser context */
picture_t * p_forward, p_backward;
} sequence_t;
/*****************************************************************************
* picture_parsing_t : parser context descriptor
*****************************************************************************/
typedef struct picture_parsing_s
{
boolean_t b_full_pel_forward_vector, b_full_pel_backward_vector;
int i_forward_f_code, i_backward_f_code;
int ppi_f_code[2][2];
int i_intra_dc_precision;
boolean_t b_frame_pred_frame_dct, b_q_scale_type;
boolean_t b_alternate_scan, b_progressive_frame;
boolean_t b_top_field_first, b_concealment_mv;
int i_lum_incr, i_chroma_incr;
/* Used for second field management */
int i_current_structure;
picture_t * p_picture;
macroblock_t * pp_mb[MAX_MB];
/* Relative to the current field */
int i_coding_type, i_structure;
boolean_t b_frame_structure;
(int *) pf_macroblock_type( vpar_thread_t * );
boolean_t b_error;
} picture_parsing_t;
/*****************************************************************************
* slice_parsing_t : parser context descriptor #2
*****************************************************************************/
typedef struct slice_parsing_s
{
unsigned char i_quantizer_scale;
int pi_dc_dct_pred[3]; /* ISO/IEC 13818-2 7.2.1 */
int pppi_pmv[2][2][2]; /* Motion vect predictors, 7.6.3 */
} slice_parsing_t;
/*****************************************************************************
* Standard codes
*****************************************************************************/
#define PICTURE_START_CODE 0x100
#define SLICE_START_CODE_MIN 0x101
#define SLICE_START_CODE_MAX 0x1AF
#define USER_DATA_START_CODE 0x1B2
#define SEQUENCE_HEADER_CODE 0x1B3
#define SEQUENCE_ERROR_CODE 0x1B4
#define EXTENSION_START_CODE 0x1B5
#define SEQUENCE_END_CODE 0x1B7
#define GROUP_START_CODE 0x1B8
/* extension start code IDs */
#define SEQUENCE_EXTENSION_ID 1
#define SEQUENCE_DISPLAY_EXTENSION_ID 2
#define QUANT_MATRIX_EXTENSION_ID 3
#define COPYRIGHT_EXTENSION_ID 4
#define SEQUENCE_SCALABLE_EXTENSION_ID 5
#define PICTURE_DISPLAY_EXTENSION_ID 7
#define PICTURE_CODING_EXTENSION_ID 8
#define PICTURE_SPATIAL_SCALABLE_EXTENSION_ID 9
#define PICTURE_TEMPORAL_SCALABLE_EXTENSION_ID 10
/* scalable modes */
#define SC_NONE 0
#define SC_DP 1
#define SC_SPAT 2
#define SC_SNR 3
#define SC_TEMP 4
/* Pictures types */
#define I_CODING_TYPE 1
#define P_CODING_TYPE 2
#define B_CODING_TYPE 3
#define D_CODING_TYPE 4 /* MPEG-1 ONLY */
/* other values are reserved */
/* Structures */
#define TOP_FIELD 1
#define BOTTOM_FIELD 2
#define FRAME_STRUCTURE 3
src/video_decoder/vdec_idct.c 0 → 100644
View file @ e229f269
/*****************************************************************************
* vdec_idct.c : IDCT functions
* (c)1999 VideoLAN
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/uio.h>
#include <X11/Xlib.h>
#include <X11/extensions/XShm.h>
#include "config.h"
#include "common.h"
#include "mtime.h"
#include "vlc_thread.h"
#include "intf_msg.h"
#include "debug.h" /* ?? temporaire, requis par netlist.h */
#include "input.h"
#include "input_netlist.h"
#include "decoder_fifo.h"
#include "video.h"
#include "video_output.h"
#include "video_parser.h"
#include "undec_picture.h"
#include "video_fifo.h"
#include "video_decoder.h"
/*
* Local prototypes
*/
/* Our current implementation is a fast DCT, we might move to a fast DFT or
* an MMX DCT in the future. */
/*****************************************************************************
* vdec_DummyIDCT : dummy function that does nothing
*****************************************************************************/
void vdec_DummyIDCT( elem_t * p_block, int i_idontcare )
{
}
/*****************************************************************************
* vdec_SparseIDCT : IDCT function for sparse matrices
*****************************************************************************/
void vdec_SparseIDCT( elem_t * p_block, int i_sparse_pos )
{
/* Copy from mpeg_play */
}
/*****************************************************************************
* vdec_IDCT : IDCT function for normal matrices
*****************************************************************************/
void vdec_IDCT( elem_t * p_block, int i_idontcare )
{
}
src/video_decoder/vdec_motion.c
View file @ e229f269
......@@ -3,8 +3,6 @@
* (c)1999 VideoLAN
*****************************************************************************/
/* ?? passer en terminate/destroy avec les signaux supplmentaires */
/*****************************************************************************
* Preamble
*****************************************************************************/
......@@ -40,52 +38,46 @@
* Local prototypes
*/
typedef (void *) f_motion_c_t( coeff_t *, pel_lookup_table_t *,
int, coeff_t *, int, int,
int, int, int, int, int );
/*****************************************************************************
* vdec_MotionCompensation : motion compensation
* vdec_DummyRecon : motion compensation for an intra macroblock
*****************************************************************************/
void vdec_MotionFrame( vdec_thread_t * p_vdec,
undec_picture_t * p_undec_p, int i_mb,
f_motion_mb_t pf_mb_motion )
void vdec_DummyRecon( macroblock_t * p_mb )
{
static int p_chroma_nb_blocks[4] = {1, 2, 4};
static int p_chroma_nb_elems[4] = {0, 64, 128, 256};
}
int i_mb_x, i_mb_y; /* Position of our macroblock in the final picture */
elem_t * p_y, p_u, p_v; /* Pointers to our picture's data */
/*****************************************************************************
* vdec_ForwardRecon : motion compensation for a forward predicted macroblock
*****************************************************************************/
void vdec_ForwardRecon( macroblock_t * p_mb )
{
}
/*****************************************************************************
* vdec_BackwardRecon : motion compensation for a backward predicted macroblock
*****************************************************************************/
void vdec_BackwardRecon( macroblock_t * p_mb )
{
#define P_mb_info p_undec_p->p_mb_info[i_mb]
i_mb_x = (i_mb << 5) % p_undec_p->p_picture->i_width;
i_mb_y = (i_mb << 5) / p_undec_p->p_picture->i_width;
p_y = &p_undec_p->p_picture->p_y[256*i_mb];
p_u = &p_undec_p->p_picture->p_u[p_chroma_nb_elems[p_undec_p->p_picture->i_chroma_type]*i_mb];
p_v = &p_undec_p->p_picture->p_v[p_chroma_nb_elems[p_undec_p->p_picture->i_chroma_type]*i_mb];
if( (p_undec_p->i_coding_type == P_CODING_TYPE) ||
(P_mb_info->i_mb_type & MB_MOTION_FORWARD) )
{
if( (P_mb_info->i_motion_type == MOTION_FRAME) ||
!(P_mb_info->i_mb_type & MB_INTRA) )
{
MotionBlock( p_undec_p->p_forward->p_u,
p_undec_p->p_forward->p_lookup_lum,
p_undec_p->p_picture->i_width,
p_u, i_mb_x, i_mb_y,
p_undec_p->p_picture->i_width,
p_undec_p->ppp_motion_vectors[0][0][0],
p_undec_p->ppp_motion_vectors[0][0][1] );
}
}
}
/*****************************************************************************
* MotionMacroblock : motion compensation for a macroblock
* vdec_BidirectionalRecon : motion compensation for a bidirectionally
* predicted macroblock
*****************************************************************************/
void vdec_MotionMacroblock420( coeff_t * p_src, pel_lookup_table_t * p_lookup,
int i_width_line,
coeff_t * p_dest, int i_dest_x, i_dest_y,
int i_stride_line,
i_mv1_x, i_mv1_y, i_mv2_x, i_mv2_y )
void vdec_BidirectionalRecon( macroblock_t * p_mb )
{
}
/*****************************************************************************
* vdec_MotionMacroblock420 : motion compensation for a 4:2:0 macroblock
*****************************************************************************/
void vdec_MotionMacroblock420( macroblock_t * p_mb )
{
/* Luminance */
MotionBlock( p_undec_p->p_forward->p_u, p_undec_p->p_forward->p_lookup_lum,
......@@ -105,12 +97,9 @@ void __inline__ MotionBlock( coeff_t * p_src, pel_lookup_table_t * p_lookup,
int i_stride_line,
i_mv1_x, i_mv1_y, i_mv2_x, i_mv2_y )
{
static (void *) ComponentMode( coeff_t * p_src,
pel_lookup_table_t * p_lookup,
coeff_t * p_dest, int i_dest_x, i_dest_y,
int i_stride_line, i_mv_x, i_mv_y )[4]
= { ComponentNN, ComponentNH, ComponentHN,
ComponentHH };
static f_motion_c_t ComponentMode[4]
= { &ComponentNN, &ComponentNH, &ComponentHN,
&ComponentHH };
int i_mode;
......@@ -118,7 +107,8 @@ void __inline__ MotionBlock( coeff_t * p_src, pel_lookup_table_t * p_lookup,
ComponentMode[i_mode]( p_src, p_lookup, i_width_line,
p_dest, i_dest_x, i_dest_y,
i_stride_line, i_mv_x >> 1, i_mv_y >> 1 );
i_stride_line, i_mv1_x >> 1, i_mv1_y >> 1,
i_mv2_x >> 1, i_mv2_y >> 1 );
}
/*****************************************************************************
......@@ -132,9 +122,22 @@ void ComponentNN( coeff_t * p_src, pel_lookup_table_t * p_lookup,
int i_vpos;
register int i_hpos, i_src_loc;
i_src_loc = (i_dest_y + i_mv_y)*i_width_line + i_dest_x + i_mv_x;
i_src_loc = (i_dest_y + i_mv1_y)*i_width_line + i_dest_x + i_mv1_x;
for( i_vpos = 0; i_vpos < 8; i_vpos++ )
for( i_vpos = 0; i_vpos < 4; i_vpos++ )
{
for( i_hpos = 0; i_hpos < 8; i_hpos++ )
{
p_dest[i_hpos] += p_src[p_lookup->pi_pel[i_src_loc + i_hpos]];
}
p_dest += 8;
i_src_loc += i_stride_line;
}
i_src_loc = (i_dest_y + i_mv2_y)*i_width_line + i_dest_x + i_mv2_x;
for( i_vpos = 4; i_vpos < 8; i_vpos++ )
{
for( i_hpos = 0; i_hpos < 8; i_hpos++ )
{
......
src/video_decoder/video_decoder.c
View file @ e229f269
......@@ -43,8 +43,8 @@ static int InitThread ( vdec_thread_t *p_vdec );
static void RunThread ( vdec_thread_t *p_vdec );
static void ErrorThread ( vdec_thread_t *p_vdec );
static void EndThread ( vdec_thread_t *p_vdec );
static void DecodePicture ( vdec_thread_t *p_vdec,
undec_picture_t * p_undec_p );
static void DecodeMacroblock ( vdec_thread_t *p_vdec,
macroblock_t * p_mb );
/*******************************************************************************
* vdec_CreateThread: create a video decoder thread
......@@ -165,11 +165,11 @@ static void RunThread( vdec_thread_t *p_vdec )
*/
while( (!p_vdec->b_die) && (!p_vdec->b_error) )
{
undec_picture_t * p_undec_p;
macroblock_t * p_mb;
if( (p_undec_p = GetPicture( p_vdec->p_vpar->p_fifo )) != NULL )
if( (p_mb = GetMacroblock( &p_vdec->p_vpar.vfifo )) != NULL )
{
DecodePicture( p_vdec, p_undec_p );
DecodeMacroblock( p_vdec, p_mb );
}
}
......@@ -220,92 +220,101 @@ static void EndThread( vdec_thread_t *p_vdec )
}
/*******************************************************************************
* DecodePicture : decode a picture
* DecodeMacroblock : decode a macroblock of a picture
*******************************************************************************/
static void DecodePicture( vdec_thread_t *p_vdec, undec_picture_t * p_undec_p )
static void DecodeMacroblock( vdec_thread_t *p_vdec, macroblock_t * p_mb )
{
static int pi_chroma_nb_blocks[4] = {0, 1, 2, 4};
static int pi_chroma_nb_coeffs[4] = {0, 64, 128, 256};
static f_motion_mb_t ppf_chroma_motion[4] = { NULL,
&vdec_MotionMacroBlock420,
&vdec_MotionMacroBlock422,
&vdec_MotionMacroBlock444 };
static f_motion_t pppf_motion_forward[4][2] = {
{NULL, NULL} /* I picture */
{&vdec_MotionForward, &vdec_MotionForward} /* P */
{NULL, &vdec_MotionForward} /* B */
{NULL, NULL} /* D */ };
static f_motion_t pppf_motion_backward[4][2] = {
{NULL, NULL} /* I picture */
{NULL, NULL} /* P */
{NULL, &vdec_MotionBackward} /* B */
{NULL, NULL} /* D */ };
static f_motion_t ppf_motion[4] = { NULL,
&vdec_MotionTopFirst,
&vdec_MotionBottomFirst,
&vdec_MotionFrame };
int i_mb, i_b, i_totb;
coeff_t * p_y, p_u, p_v;
f_motion_mb_t pf_chroma_motion;
f_motion_t pf_motion_forward, pf_motion_backward;
int i_chroma_nb_blocks, i_chroma_nb_coeffs;
p_y = (coeff_t *)p_undec_p->p_picture->p_y;
p_u = (coeff_t *)p_undec_p->p_picture->p_u;
p_v = (coeff_t *)p_undec_p->p_picture->p_v;
#define I_chroma_format p_undec_p->p_picture->i_chroma_format
pf_chroma_motion = ppf_chroma_motion[I_chroma_format];
pf_motion_forward
pf_motion = ppf_motion[p_undec_p->i_structure];
int i_b;
i_chroma_nb_blocks = pi_chroma_nb_blocks[I_chroma_format];
i_chroma_nb_coeffs = pi_chroma_nb_coeffs[I_chroma_format];
#undef I_chroma_format
/*
* Motion Compensation (ISO/IEC 13818-2 section 7.6)
*/
(*p_mb->pf_motion)( p_mb );
for( i_mb = 0; i_mb < p_undec_p->i_mb_height*p_undec_p->i_mb_width; i_mb++ )
/* luminance */
for( i_b = 0; i_b < 4; i_b++ )
{
#define P_mb_info p_undec_p->p_mb_info[i_ref]
/*
* Inverse DCT (ISO/IEC 13818-2 section Annex A)
*/
/* Luminance : always 4 blocks */
for( i_b = 0; i_b < 4; i_b++ )
{
(*P_mb_info.p_idct_function[i_b])( p_y + i_b*64 );
}
i_totb = 4;
/* Chrominance Cr */
for( i_b = 0; i_b < i_chroma_nb_blocks; i_b++ )
{
(*P_mb_info.p_idct_function[i_totb + i_b])( p_u + i_b*64 );
}
i_totb += i_chroma_nb_blocks;
/* Chrominance Cb */
for( i_b = 0; i_b < i_chroma_nb_blocks; i_b++ )
{
(*P_mb_info.p_idct_function[i_totb + i_b])( p_v + i_b*64 );
}
(*p_mb->pf_idct[i_b])( p_mb, p_mb->ppi_blocks[i_b], p_mb->pi_sparse_pos[i_b] );
/*
* Adding prediction and coefficient data (ISO/IEC 13818-2 section 7.6.8)
*/
(*p_mb->pf_addb[i_b])( p_mb->ppi_blocks[i_b],
p_mb->p_data[i_b], p_mb->i_lum_incr );
}
/* chrominance */
for( i_b = 4; i_b < 4 + 2*p_mb->i_chroma_nb_blocks; i_b++ )
{
/*
* Motion Compensation (ISO/IEC 13818-2 section 7.6)
* Inverse DCT (ISO/IEC 13818-2 section Annex A)
*/
(*pf_motion)( p_vdec, p_undec_p, i_mb, pf_chroma_motion );
(*p_mb->pf_idct[i_b])( p_mb, p_mb->ppi_blocks[i_b], p_mb->pi_sparse_pos[i_b] );
p_y += 256;
p_u += i_chroma_nb_coeffs;
p_v += i_chroma_nb_coeffs;
#undef P_mb_info
/*
* Adding prediction and coefficient data (ISO/IEC 13818-2 section 7.6.8)
*/
(*p_mb->pf_addb[i_b])( p_mb->ppi_blocks[i_b],
p_mb->p_data[i_b], p_mb->i_chroma_incr );
}
/*
* Decoding is finished, mark the picture ready for displaying and free
* unneeded memory
* Decoding is finished, release the macroblock and free
* unneeded memory.
*/
vpar_ReleasePicture( p_vdec->p_vpar->p_fifo, p_undec_p );
vpar_ReleaseMacroblock( &p_vdec->p_vpar.vfifo, p_mb );
}
/*******************************************************************************
* vdec_AddBlock : add a block
*******************************************************************************/
void vdec_AddBlock( elem_t * p_block, data_t * p_data, int i_incr )
{
int i_x, i_y;
for( i_y = 0; i_y < 8; i_y++ )
{
for( i_x = 0; i_x < 8; i_x++ )
{
/* ??? Need clip to be MPEG-2 compliant */
*p_data++ += *p_block++;
}
p_data += i_incr;
}
}
/*******************************************************************************
* vdec_CopyBlock : copy a block
*******************************************************************************/
void vdec_CopyBlock( elem_t * p_block, data_t * p_data, int i_incr )
{
int i_x, i_y;
for( i_y = 0; i_y < 8; i_y++ )
{
#ifndef VDEC_DFT
/* elem_t and data_t are the same */
memcopy( p_data, p_block, 8*sizeof(data_t) );
p_data += i_incr+8;
p_block += 8;
#else
for( i_x = 0; i_x < 8; i_x++ )
{
/* ??? Need clip to be MPEG-2 compliant */
/* ??? Why does the reference decoder add 128 ??? */
*p_data++ = *p_block++;
}
p_data += i_incr;
#endif
}
}
/*******************************************************************************
* vdec_DummyBlock : dummy function that does nothing
*******************************************************************************/
void vdec_DummyBlock( elem_t * p_block, data_t * p_data, int i_incr )
{
}
src/video_parser/video_fifo.c
View file @ e229f269
......@@ -30,7 +30,7 @@
#include "video_output.h"
#include "video_parser.h"
#include "undec_picture.h"
#include "macroblock.h"
#include "video_fifo.h"
#include "video_decoder.h"
......@@ -39,7 +39,7 @@
*****************************************************************************/
void vpar_InitFIFO( vpar_thread_t * p_vpar )
{
int i_dummy;
int i_dummy;
/* Initialize mutex and cond */
vlc_mutex_init( p_vpar->vfifo.lock );
......@@ -54,17 +54,16 @@ void vpar_InitFIFO( vpar_thread_t * p_vpar )
i_index = VFIFO_SIZE; /* all structures are available */
for( i_dummy = 0; i_dummy < VFIFO_SIZE + 1; i_dummy++ )
{
p_vpar->vfifo.pp_undec_free[i_dummy] = p_vpar->vfifo.p_undec_p + i;
p_vpar->vfifo.p_undec_p[i].p_mb_info = NULL;
p_vpar->vfifo.pp_mb_free[i_dummy] = p_vpar->vfifo.p_macroblocks + i;
}
}
/*****************************************************************************
* vpar_GetPicture : return a picture to be decoded
* vpar_GetMacroblock : return a macroblock to be decoded
*****************************************************************************/
undec_picture_t * vpar_GetPicture( video_fifo_t * p_fifo )
macroblock_t * vpar_GetMacroblock( video_fifo_t * p_fifo )
{
undec_picture_t * p_undec_p;
macroblock_t * p_mb;
vlc_mutex_lock( &p_fifo->lock );
while( VIDEO_FIFO_ISEMPTY( *p_fifo ) )
......@@ -77,20 +76,20 @@ undec_picture_t * vpar_GetPicture( video_fifo_t * p_fifo )
}
}
p_undec_p = VIDEO_FIFO_START( *p_fifo );
p_mb = VIDEO_FIFO_START( *p_fifo );
VIDEO_FIFO_INCSTART( *p_fifo );
vlc_mutex_unlock( &p_fifo->lock );
return( p_undec_p );
return( p_mb );
}
/*****************************************************************************
* vpar_NewPicture : return a buffer for the parser
* vpar_NewMacroblock : return a buffer for the parser
*****************************************************************************/
undec_picture_t * vpar_NewPicture( video_fifo_t * p_fifo )
macroblock_t * vpar_NewMacroblock( video_fifo_t * p_fifo )
{
undec_picture_t * p_undec_p;
macroblock_t * p_mb;
#define P_buffer p_fifo->p_vpar.vbuffer
vlc_mutex_lock( &P_buffer->lock );
......@@ -100,128 +99,100 @@ undec_picture_t * vpar_NewPicture( video_fifo_t * p_fifo )
return NULL;
}
p_undec_p = P_buffer->pp_undec_free[ P_buffer->i_index-- ];
p_mb = P_buffer->pp_undec_free[ P_buffer->i_index-- ];
#undef P_buffer
vlc_mutex_unlock( &P_buffer->lock );
return( p_undec_p );
return( p_mb );
}
/*****************************************************************************
* vpar_DecodePicture : put a picture in the video fifo, if it is decodable
* vpar_DecodeMacroblock : put a macroblock in the video fifo
*****************************************************************************/
void vpar_DecodePicture( video_fifo_t * p_fifo, undec_picture_t * p_undec_p )
void vpar_DecodeMacroblock( video_fifo_t * p_fifo, macroblock_t * p_mb )
{
boolean_t b_decodable;
switch( p_undec_p )
{
case B_CODING_TYPE:
b_decodable = ((p_undec_p->p_backward_p != NULL) &&
(p_undec_p->p_forward_p != NULL));
break;
case P_CODING_TYPE:
b_decodable = (p_undec_p->p_backward_p != NULL);
break;
case I_CODING_TYPE:
case D_CODING_TYPE:
b_decodable = TRUE;
break;
default:
/* That should not happen */
}
if( b_decodable )
{
/* Place picture in the video FIFO */
vlc_mutex_lock( &p_fifo->lock );
/* Place picture in the video FIFO */
vlc_mutex_lock( &p_fifo->lock );
/* By construction, the video FIFO cannot be full */
VIDEO_FIFO_END( *p_fifo ) = p_undec_p;
VIDEO_FIFO_INCEND( *p_fifo );
/* By construction, the video FIFO cannot be full */
VIDEO_FIFO_END( *p_fifo ) = p_mb;
VIDEO_FIFO_INCEND( *p_fifo );
vlc_mutex_unlock( &p_fifo->lock );
}
vlc_mutex_unlock( &p_fifo->lock );
}
/*****************************************************************************
* vpar_ReleasePicture : put a picture in the video_output fifo, and update
* links and buffers
* vpar_ReleaseMacroblock : release a macroblock and put the picture in the
* video output heap, if it is finished
*****************************************************************************/
void vpar_ReleasePicture( video_fifo_t * p_fifo, undec_picture_t * p_undec_p )
void vpar_ReleaseMacroblock( video_fifo_t * p_fifo, macroblock_t * p_mb )
{
int i_ref;
/* Tell referencing pictures so that they can be decoded */
for( i_ref = 0; p_undec_p->pp_referencing_undec[i_ref].p_undec != NULL
&& i_ref < MAX_REFERENCING_UNDEC; i_ref++ )
/* Unlink referenced pictures */
if( p_mb->p_forw_top != NULL )
{
*p_undec_p->pp_referencing_undec[i_ref].pp_frame = p_undec_p->p_picture;
vout_LinkPicture( p_fifo->p_vpar.p_vout, p_picture );
/* Try to put the referencing picture in the video FIFO */
vpar_DecodePicture( p_fifo, p_undec_p->pp_referencing_undec[i_ref].p_undec );
vout_UnlinkPicture( p_fifo->p_vpar.p_vout, p_mb->p_forw_top );
}
if( p_mb->p_backw_top != NULL )
{
vout_UnlinkPicture( p_fifo->p_vpar.p_vout, p_mb->p_backw_top );
}
if( p_mb->p_forw_bot != NULL )
{
vout_UnlinkPicture( p_fifo->p_vpar.p_vout, p_mb->p_forw_bot );
}
if( p_mb->p_backw_bot != NULL )
{
vout_UnlinkPicture( p_fifo->p_vpar.p_vout, p_mb->p_backw_bot );
}
/* Unlink referenced pictures */
if( p_undec_p->p_forward_ref != NULL )
/* Unlink picture buffer */
vlc_mutex_lock( &p_mb->p_picture->lock_deccount );
p_mb->p_picture->i_deccount--;
if( p_mb->p_picture->i_deccount == 0 )
{
vout_UnlinkPicture( p_fifo->p_vpar.p_vout, p_undec_p->p_forward_ref );
if( p_undec_p->p_backward_ref != NULL )
{
vout_UnlinkPicture( p_fifo->p_vpar.p_vout, p_undec_p->p_backward_ref );
}
/* Mark the picture to be displayed */
vout_DisplayPicture( p_fifo->p_vpar.p_vout, p_mb->p_picture );
/* Warn Synchro for its records. */
vpar_SynchroEnd( p_fifo->p_vpar );
}
/* Mark the picture to be displayed */
vout_DisplayPicture( p_fifo->p_vpar.p_vout, p_undec_p->p_picture );
vlc_mutex_unlock( & p_mb->p_picture->lock_deccount );
/* Release the undec_picture_t structure */
/* Release the macroblock_t structure */
#define P_buffer p_fifo->p_vpar.vbuffer
vlc_mutex_lock( &P_buffer->lock );
P_buffer->pp_undec_free[ ++P_buffer->i_index ] = p_undec_p;
P_buffer->pp_mb_free[ ++P_buffer->i_index ] = p_mb;
vlc_mutex_unlock( &P_buffer->lock );
#undef P_buffer
}
}
/*****************************************************************************
* vpar_DestroyPicture : destroy a picture in case of error
* vpar_DestroyMacroblock : destroy a macroblock in case of error
*****************************************************************************/
void vpar_DestroyPicture( video_fifo_t * p_fifo, undec_picture_t * p_undec_p )
void vpar_DestroyMacroblock( video_fifo_t * p_fifo, macroblock_t * p_mb )
{
int i_ref;
/* Destroy referencing pictures */
for( i_ref = 0; p_undec_p->pp_referencing_undec[i_ref].p_undec != NULL
&& i_ref < MAX_REFERENCING_UNDEC; i_ref++ )
/* Unlink referenced pictures */
if( p_mb->p_forw_top != NULL )
{
/* Try to put the referencing picture in the video FIFO */
vpar_DestroyPicture( p_fifo, p_undec_p->pp_referencing_undec[i_ref].p_undec );
vout_UnlinkPicture( p_fifo->p_vpar.p_vout, p_mb->p_forw_top );
}
/* Unlink referenced pictures */
if( p_undec_p->p_forward_ref != NULL )
if( p_mb->p_backw_top != NULL )
{
vout_UnlinkPicture( p_fifo->p_vpar.p_vout, p_undec_p->p_forward_ref );
if( p_undec_p->p_backward_ref != NULL )
{
vout_UnlinkPicture( p_fifo->p_vpar.p_vout, p_undec_p->p_backward_ref );
}
vout_UnlinkPicture( p_fifo->p_vpar.p_vout, p_mb->p_backw_top );
}
/* Release the picture buffer */
vout_DestroyPicture( p_fifo->p_vpar.p_vout, p_undec_p->p_picture );
/* Release the undec_picture_t structure */
if( p_mb->p_forw_bot != NULL )
{
vout_UnlinkPicture( p_fifo->p_vpar.p_vout, p_mb->p_forw_bot );
}
if( p_mb->p_backw_bot != NULL )
{
vout_UnlinkPicture( p_fifo->p_vpar.p_vout, p_mb->p_backw_bot );
}
/* Release the macroblock_t structure */
#define P_buffer p_fifo->p_vpar.vbuffer
vlc_mutex_lock( &P_buffer->lock );
P_buffer->pp_undec_free[ ++P_buffer->i_index ] = p_undec_p;
P_buffer->pp_mb_free[ ++P_buffer->i_index ] = p_mb;
vlc_mutex_unlock( &P_buffer->lock );
#undef P_buffer
}
}
src/video_parser/video_parser.c
View file @ e229f269
......@@ -146,6 +146,7 @@ static int CheckConfiguration( video_cfg_t *p_cfg )
*******************************************************************************/
static int InitThread( vpar_thread_t *p_vpar )
{
int i_dummy;
intf_DbgMsg("vpar debug: initializing video parser thread %p\n", p_vpar);
......@@ -181,6 +182,7 @@ static int InitThread( vpar_thread_t *p_vpar )
p_vpar->sequence.nonintra_quant.b_allocated = FALSE;
p_vpar->sequence.chroma_intra_quant.b_allocated = FALSE;
p_vpar->sequence.chroma_nonintra_quant.b_allocated = FALSE;
p_vpar->sequence.i_frame_number = 0;
/* Initialize other properties */
#ifdef STATS
......@@ -201,16 +203,19 @@ static int InitThread( vpar_thread_t *p_vpar )
bzero( p_vpar->p_vdec, MAX_VDEC*sizeof(vdec_thread_t *) );
/* Spawn a video_decoder thread */
/* ??? add the possibility to launch multiple vdec threads */
if( (p_vpar->p_vdec[0] = vdec_CreateThread( p_vpar )) == NULL )
/* Spawn video_decoder threads */
/* ??? modify the number of vdecs at runtime ? */
for( i_dummy = 0; i_dummy < NB_VDEC; i_dummy++ )
{
return( 1 );
if( (p_vpar->p_vdec[i_dummy] = vdec_CreateThread( p_vpar )) == NULL )
{
return( 1 );
}
}
/* Mark thread as running and return */
intf_DbgMsg("vpar debug: InitThread(%p) succeeded\n", p_vpar);
return( 0 );
return( 0 );
}
/*******************************************************************************
......@@ -289,15 +294,16 @@ static void ErrorThread( vpar_thread_t *p_vpar )
vlc_mutex_lock( &p_vpar->fifo.data_lock );
/* ?? trash all trashable PES packets */
while( !PARSER_FIFO_ISEMPTY(p_vpar->fifo) )
while( !DECODER_FIFO_ISEMPTY(p_vpar->fifo) )
{
input_NetlistFreePES( p_vpar->bit_stream.p_input, PARSER_FIFO_START(p_vpar->fifo) );
PARSER_FIFO_INCSTART( p_vpar->fifo );
input_NetlistFreePES( p_vpar->bit_stream.p_input,
DECODER_FIFO_START(p_vpar->fifo) );
DECODER_FIFO_INCSTART( p_vpar->fifo );
}
vlc_mutex_unlock( &p_vpar->fifo.data_lock );
/* Sleep a while */
msleep( VPAR_IDLE_SLEEP );
msleep( VPAR_IDLE_SLEEP );
}
}
......@@ -323,7 +329,7 @@ static void EndThread( vpar_thread_t *p_vpar )
/* ?? */
/* Destroy vdec threads */
for( i_dummy = 0; i_dummy < MAX_VDEC; i_dummy++ )
for( i_dummy = 0; i_dummy < NB_VDEC; i_dummy++ )
{
if( p_vpar->p_vdec[i_dummy] != NULL )
vdec_DestroyThread( p_vpar->p_vdec[i_dummy] );
......
src/video_parser/vpar_blocks.c 0 → 100644
View file @ e229f269
/*****************************************************************************
* vpar_blocks.c : blocks parsing
* (c)1999 VideoLAN
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/uio.h>
#include <X11/Xlib.h>
#include <X11/extensions/XShm.h>
#include "config.h"
#include "common.h"
#include "mtime.h"
#include "vlc_thread.h"
#include "intf_msg.h"
#include "debug.h" /* ?? temporaire, requis par netlist.h */
#include "input.h"
#include "input_netlist.h"
#include "decoder_fifo.h"
#include "video.h"
#include "video_output.h"
#include "video_parser.h"
#include "video_fifo.h"
#include "video_decoder.h"
/*
* Local prototypes
*/
static __inline__ void InitMacroblock( vpar_thread_t * p_vpar,
macroblock_t * p_mb, int i_mb_address );
static __inline__ int MacroblockAddressIncrement( vpar_thread_t * p_vpar );
static __inline__ void MacroblockModes( vpar_thread_t * p_vpar,
macroblock_t * p_mb );
typedef (void *) f_decode_block_t( vpar_thread_t *, macroblock_t *, int );
/*****************************************************************************
* vpar_ParseMacroblock : Parse the next macroblock
*****************************************************************************/
void vpar_ParseMacroblock( vpar_thread_t * p_vpar, int * pi_mb_address,
int i_mb_previous, int i_mb_base )
{
static f_addb_t ppf_addb_intra[2] = {vdec_AddBlock, vdec_CopyBlock};
int i_mb, i_b, i_mask, i_x, i_y, pi_pos[3], pi_width[3];
macroblock_t * p_mb;
f_addb_t pf_addb;
*pi_mb_address += MacroblockAddressIncrement( p_vpar );
for( i_mb = i_mb_previous; i_mb < *pi_mb_address; i_mb++ )
{
/* Skipped macroblock (ISO/IEC 13818-2 7.6.6). */
static int pi_dc_dct_reinit[4] = {128,256,512,1024};
static f_motion_t pf_motion_skipped[4] = {NULL, vdec_MotionField,
vdec_MotionField, vdec_MotionFrame};
/* Reset DC predictors (7.2.1). */
p_vpar->slice.pi_dct_pred[0] = p_vpar->slice.pi_dct_pred[1]
= p_vpar->slice.pi_dct_pred[2]
= pi_dc_dct_reinit[p_vpar->picture.i_intra_dc_precision];
if( p_vpar->picture.i_coding_type == P_CODING_TYPE )
{
/* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
bzero( p_vpar->slice.pppi_pmv, 8*sizeof(int) );
}
if( (p_mb = p_vpar->picture.pp_mb[i_mb_base + i_mb] =
vpar_NewMacroblock( &p_vpar->vfifo )) == NULL )
{
p_vpar->picture.b_error = TRUE;
intf_ErrMsg("vpar error: macroblock list is empty !");
return;
}
InitMacroblock( p_vpar, p_mb, i_mb );
/* No IDCT nor AddBlock. */
for( i_b = 0; i_b < 12; i_b++ )
{
p_mb->pf_idct[i_b] = vdec_DummyIDCT;
p_mb->pf_addb[i_b] = vdec_DummyBlock;
}
/* Motion type is picture structure. */
p_mb->pf_motion = pf_motion_skipped[p_vpar->picture.i_structure];
/* Predict from field of same parity. */
/* ??? */
}
/* Get a macroblock structure. */
if( (p_mb = p_vpar->picture.pp_mb[i_mb_base + *pi_mb_address] =
vpar_NewMacroblock( &p_vpar->vfifo )) == NULL )
{
p_vpar->picture.b_error = TRUE;
intf_ErrMsg("vpar error: macroblock list is empty !");
return;
}
InitMacroblock( p_vpar, p_mb, *pi_mb_address );
/* Parse off macroblock_modes structure. */
MacroblockModes( p_vpar, p_mb );
if( p_vpar->mb.i_mb_type & MB_QUANT )
{
LoadQuantizerScale( p_vpar );
}
if( p_vpar->mb.i_mb_type & MB_MOTION_FORWARD )
{
(*p_vpar->sequence.pf_decode_mv)( p_vpar, 0 );
}
if( p_vpar->mb.i_mb_type & MB_MOTION_BACKWARD )
{
(*p_vpar->sequence.pf_decode_mv)( p_vpar, 1 );
}
if( p_vpar->picture.b_concealment_mv && (p_vpar->mb.i_mb_type & MB_INTRA) )
{
DumpBits( &p_vpar->bit_stream, 1 );
}
if( p_vpar->mb.i_mb_type & MB_PATTERN )
{
(*p_vpar->sequence.pf_decode_pattern)( p_vpar );
}
else
{
int pi_coded_block_pattern[2] = {0,
(1 << 4+2*p_vpar->sequence.i_chroma_nb_blocks) - 1};
p_vpar->mb.i_coded_block_pattern = pi_coded_block_pattern
[p_vpar->mb.i_mb_type & MB_INTRA];
}
pf_addb = ppf_addb_intra[p_vpar->mb.i_mb_type & MB_INTRA];
/* C'est de la merde, il faut recommencer */
i_x = p_mb->i_mb_x << 4;
i_y = p_mb->i_mb_y << 4;
pi_pos[0] = i_y*(p_vpar->sequence.i_width
<< (!p_vpar->picture.b_frame_structure))
+ (p_mb->i_structure == BOTTOM_FIELD)*p_vpar->sequence.i_width
+ i_x;
pi_pos[1] = pi_pos[2] = i_y*(p_vpar->sequence.i_chroma_width
<< (!p_vpar->picture.b_frame_structure))
+ (p_mb->i_structure == BOTTOM_FIELD)*p_vpar->sequence.i_chroma_width
+ (i_x >> (3-p_vpar->sequence.i_chroma_format));
pi_width[0] = p_vpar->sequence.i_width << (!p_vpar->picture.b_frame_structure
|| p_vpar->mb.b_dct_type);
pi_width[1] = pi_width[2] = p_vpar->sequence.i_chroma_width
<< (!p_vpar->picture.b_frame_structure || p_vpar->mb.b_dct_type);
/* Effectively decode blocks. */
for( i_b = 0, i_mask = 1 << (3 + 2*p_vpar->sequence.i_chroma_nb_blocks);
i_b < 4 + 2*p_vpar->sequence.i_chroma_nb_blocks; i_b++, i_mask >>= 1 )
{
if( p_vpar->mb.i_coded_block_pattern & i_mask )
{
static f_decode_block_t pppf_decode_block[2][2] =
{ {vpar_DecodeMPEG1Non, vpar_DecodeMPEG1Intra},
{vpar_DecodeMPEG2Non, vpar_DecodeMPEG2Intra} };
static int pi_x[12] = {0,8,0,8,0,0,0,0,8,8,8,8};
static int pi_y[12] = {0,0,8,8,0,0,8,8,0,0,8,8};
data_t pi_data[12] =
{p_mb->p_picture->p_y, p_mb->p_picture->p_y,
p_mb->p_picture->p_y, p_mb->p_picture->p_y,
p_mb->p_picture->p_u, p_mb->p_picture->p_v,
p_mb->p_picture->p_u, p_mb->p_picture->p_v,
p_mb->p_picture->p_u, p_mb->p_picture->p_v,
p_mb->p_picture->p_u, p_mb->p_picture->p_v};
bzero( p_mb->ppi_blocks[i_b], 64*sizeof(elem_t) );
(*pppf_decode_block[p_vpar->sequence.b_mpeg2]
[p_vpar->mb.i_mb_type & MB_INTRA])
( p_vpar, p_mb, i_b );
/* decode_block has already set pf_idct and pi_sparse_pos. */
p_mb->pf_addb[i_b] = pf_addb;
/* Calculate block coordinates. */
p_mb->p_data[i_b] = pi_data[i_b] + pi_pos[i_b >> 2]
+ pi_y[i_b]*pi_width[i_b >> 2]
+ (p_vpar->mb.b_dct_type & ((i_b & 2) >> 1))
/* INACHEV parce que trop pourri ! */
}
else
{
/* Block not coded, so no IDCT, nor AddBlock */
p_mb->pf_addb[i_b] = vdec_DummyBlock;
p_mb->pf_idct[i_b] = vdec_DummyIDCT;
}
}
if( !( p_vpar->mb.i_mb_type & MB_INTRA ) )
{
static int pi_dc_dct_reinit[4] = {128,256,512,1024};
/* Reset DC predictors (7.2.1). */
p_vpar->slice.pi_dct_pred[0] = p_vpar->slice.pi_dct_pred[1]
= p_vpar->slice.pi_dct_pred[2]
= pi_dc_dct_reinit[p_vpar->picture.i_intra_dc_precision];
}
else if( !p_vpar->picture.b_concealment_mv )
{
/* Reset MV predictors. */
bzero( p_vpar->slice.pppi_pmv, 8*sizeof(int) );
}
if( (p_vpar->picture.i_coding_type == P_CODING_TYPE) &&
!(p_vpar->mb.i_mb_type & (MB_MOTION_FORWARD|MB_INTRA)) )
{
/* Special No-MC macroblock in P pictures (7.6.3.5). */
p_vpar->slice.pppi_pmv[0][0][0] = p_vpar->slice.pppi_pmv[0][0][1] =
p_vpar->slice.pppi_pmv[1][0][0] = p_vpar->slice.pppi_pmv[1][0][1] = 0;
/* motion type ?????? */
/* predict from field of same parity ????? */
}
}
/*****************************************************************************
* InitMacroblock : Initialize macroblock values
*****************************************************************************/
static __inline__ void InitMacroblock( vpar_thread_t * p_vpar,
macroblock_t * p_mb, int i_mb_address )
{
p_mb->p_picture = p_vpar->picture.p_picture;
p_mb->i_structure = p_vpar->picture.i_structure;
p_mb->i_mb_x = i_mb_address % p_vpar->sequence.i_mb_width;
p_mb->i_mb_y = i_mb_address / p_vpar->sequence.i_mb_width;
p_mb->i_chroma_nb_blocks = p_vpar->sequence.i_chroma_nb_blocks;
p_mb->i_lum_incr = p_vpar->picture.i_lum_incr;
p_mb->i_chroma_incr = p_vpar->picture.i_chroma_incr;
}
/*****************************************************************************
* MacroblockAddressIncrement : Get the macroblock_address_increment field
*****************************************************************************/
static __inline__ int MacroblockAddressIncrement( vpar_thread_t * p_vpar )
{
/* pomper dans Berkeley */
}
/*****************************************************************************
* MacroblockModes : Get the macroblock_modes structure
*****************************************************************************/
static __inline__ void MacroblockModes( vpar_thread_t * p_vpar,
macroblock_t * p_mb )
{
static f_motion_t pf_motion[2][4] =
{ {NULL, vdec_FieldRecon, vdec_16x8Recon, vdec_DMVRecon},
{NULL, vdec_FieldRecon, vdec_FrameRecon, vdec_DMVRecon} };
static int ppi_mv_count[2][4] = { {0, 1, 2, 1}, {0, 2, 1, 1} };
static int ppi_mv_format[2][4] = { {0, 1, 1, 1}, {0, 1, 2, 1} };
/* Get macroblock_type. */
p_vpar->mb.i_mb_type = (*p_vpar->picture.pf_macroblock_type)
( vpar_thread_t * p_vpar );
/* SCALABILITY : warning, we don't know if spatial_temporal_weight_code
* has to be dropped, take care if you use scalable streams. */
/* DumpBits( &p_vpar->bit_stream, 2 ); */
if( !(p_vpar->mb.i_mb_type & (MB_MOTION_FORWARD |MB_MOTION_BACKWARD))
|| p_vpar->picture.b_frame_pred_frame_dct )
{
/* If mb_type has neither MOTION_FORWARD nor MOTION_BACKWARD, this
* is useless, but also harmless. */
p_vpar->mb.i_motion_type = MOTION_FRAME;
}
else
{
p_vpar->mb.i_motion_type = GetBits( &p_vpar->bit_stream, 2 );
}
p_mb->f_motion = pf_motion[p_vpar->picture.b_frame_structure]
[p_vpar->mb.i_motion_type];
p_vpar->mb.i_mv_count = ppi_mv_count[p_vpar->picture.b_frame_structure]
[p_vpar->mb.i_motion_type];
p_vpar->mb.i_mv_format = ppi_mv_format[p_vpar->picture.b_frame_structure]
[p_vpar->mb.i_motion_type];
if( (p_vpar->picture.i_structure == FRAME_STRUCTURE) &&
(!p_vpar->picture.b_frame_pred_frame_dct) &&
(p_var->mb.i_mb_type & (MB_PATTERN|MB_INTRA)) )
{
p_vpar->mb.b_dct_type = GetBits( &p_vpar->bit_stream, 1 );
}
else
{
p_vpar->mb.b_dct_type = 0;
}
}
/*****************************************************************************
* vpar_IMBType : macroblock_type in I pictures
*****************************************************************************/
int vpar_IMBType( vpar_thread_t * p_vpar )
{
/* pomper dans Berkeley */
}
/*****************************************************************************
* vpar_PMBType : macroblock_type in P pictures
*****************************************************************************/
int vpar_PMBType( vpar_thread_t * p_vpar )
{
/* pomper dans Berkeley */
}
/*****************************************************************************
* vpar_BMBType : macroblock_type in B pictures
*****************************************************************************/
int vpar_BMBType( vpar_thread_t * p_vpar )
{
/* pomper dans Berkeley */
}
/*****************************************************************************
* vpar_DMBType : macroblock_type in D pictures
*****************************************************************************/
int vpar_DMBType( vpar_thread_t * p_vpar )
{
/* pomper dans Berkeley */
}
/*****************************************************************************
* vpar_CodedPattern420 : coded_block_pattern with 420 chroma
*****************************************************************************/
int vpar_CodedPattern420( vpar_thread_t * p_vpar )
{
/* pomper dans Berkeley */
}
/*****************************************************************************
* vpar_CodedPattern422 : coded_block_pattern with 422 chroma
*****************************************************************************/
int vpar_CodedPattern422( vpar_thread_t * p_vpar )
{
/* pomper dans Berkeley + attention ! y'a 2 bits en plus en MPEG2 */
}
/*****************************************************************************
* vpar_CodedPattern444 : coded_block_pattern with 444 chroma
*****************************************************************************/
int vpar_CodedPattern444( vpar_thread_t * p_vpar )
{
/* pomper dans Berkeley + attention ! y'a 4 bits en plus en MPEG2 */
}
/*****************************************************************************
* vpar_DecodeMPEG1Non : decode MPEG-1 non-intra blocks
*****************************************************************************/
void vpar_DecodeMPEG1Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
{
/* pomper dans Berkeley. Pour toutes ces fonctions, il faut mettre
p_mb->pf_idct[i_b] :
- vdec_IDCT ou
- vdec_SparseIDCT si la matrice n'a qu'un coefficient non nul.
Dans le deuxime cas, p_mb->pi_sparse_pos[i_b] contient le numro
de ce coefficient. */
if( p_vpar->picture.i_coding_type == D_CODING_TYPE )
{
/* Remove end_of_macroblock (always 1, prevents startcode emulation)
* ISO/IEC 11172-2 section 2.4.2.7 and 2.4.3.6 */
DumpBits( &p_vpar->fifo, 1 );
}
}
/*****************************************************************************
* vpar_DecodeMPEG1Intra : decode MPEG-1 intra blocks
*****************************************************************************/
void vpar_DecodeMPEG1Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
{
/* pomper dans Berkeley. */
if( p_vpar->picture.i_coding_type == D_CODING_TYPE )
{
/* Remove end_of_macroblock (always 1, prevents startcode emulation)
* ISO/IEC 11172-2 section 2.4.2.7 and 2.4.3.6 */
DumpBits( &p_vpar->fifo, 1 );
}
}
/*****************************************************************************
* vpar_DecodeMPEG2Non : decode MPEG-2 non-intra blocks
*****************************************************************************/
void vpar_DecodeMPEG2Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
{
/* pomper dans Berkeley. Bien sr les matrices seront diffrentes... */
}
/*****************************************************************************
* vpar_DecodeMPEG2Intra : decode MPEG-2 intra blocks
*****************************************************************************/
void vpar_DecodeMPEG2Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
{
/* pomper dans Berkeley. */
}
src/video_parser/vpar_headers.c
View file @ e229f269
......@@ -3,8 +3,6 @@
* (c)1999 VideoLAN
*****************************************************************************/
/* ?? passer en terminate/destroy avec les signaux supplmentaires */
/*****************************************************************************
* Preamble
*****************************************************************************/
......@@ -30,15 +28,41 @@
#include "decoder_fifo.h"
#include "video.h"
#include "video_output.h"
#include "vpar_blocks.h"
#include "video_parser.h"
#include "undec_picture.h"
#include "macroblock.h"
#include "video_fifo.h"
#include "video_decoder.h"
/*
* Local prototypes
*/
static __inline__ void NextStartCode( vpar_thread_t * p_vpar );
static void GroupHeader( vpar_thread_t * p_vpar )
static void PictureHeader( vpar_thread_t * p_vpar )
static void __inline__ ReferenceUpdate( vpar_thread_t * p_vpar,
int i_coding_type,
picture_t * p_newref )
static void __inline__ ReferenceReplace( vpar_thread_t * p_vpar,
int i_coding_type,
picture_t * p_newref )
static void SliceHeader00( vpar_thread_t * p_vpar,
int * pi_mb_address, int i_mb_base,
elem_t * p_y, p_u, p_v, u32 i_vert_code )
static void SliceHeader01( vpar_thread_t * p_vpar,
int * pi_mb_address, int i_mb_base,
elem_t * p_y, p_u, p_v, u32 i_vert_code )
static void SliceHeader10( vpar_thread_t * p_vpar,
int * pi_mb_address, int i_mb_base,
elem_t * p_y, p_u, p_v, u32 i_vert_code )
static void SliceHeader11( vpar_thread_t * p_vpar,
int * pi_mb_address, int i_mb_base,
elem_t * p_y, p_u, p_v, u32 i_vert_code )
static __inline__ void SliceHeader( vpar_thread_t * p_vpar,
int * pi_mb_address, int i_mb_base,
elem_t * p_y, p_u, p_v, u32 i_vert_code )
static void ExtensionAndUserData( vpar_thread_t * p_vpar )
/*****************************************************************************
* vpar_NextSequenceHeader : Find the next sequence header
......@@ -98,7 +122,7 @@ int vpar_ParseHeader( vpar_thread_t * p_vpar )
*****************************************************************************/
static __inline__ void NextStartCode( vpar_thread_t * p_vpar )
{
/* Re-align the buffer to an 8-bit boundary */
/* Re-align the buffer on an 8-bit boundary */
DumpBits( &p_vpar->bit_stream, p_vpar->bit_stream.fifo.i_available & 7 );
while( ShowBits( &p_vpar->bit_stream, 24 ) != 0x01L && !p_vpar->b_die )
......@@ -110,37 +134,31 @@ static __inline__ void NextStartCode( vpar_thread_t * p_vpar )
/*****************************************************************************
* SequenceHeader : Parse the next sequence header
*****************************************************************************/
#define RESERVED -1
static double d_frame_rate_table[16] =
{
0.0,
((23.0*1000.0)/1001.0),
24.0,
25.0,
((30.0*1000.0)/1001.0),
30.0,
50.0,
((60.0*1000.0)/1001.0),
60.0,
RESERVED,
RESERVED,
RESERVED,
RESERVED,
RESERVED,
RESERVED,
RESERVED
};
static void SequenceHeader( vpar_thread_t * p_vpar )
{
#define RESERVED -1
static double d_frame_rate_table[16] =
{
0.0,
((23.0*1000.0)/1001.0),
24.0,
25.0,
((30.0*1000.0)/1001.0),
30.0,
50.0,
((60.0*1000.0)/1001.0),
60.0,
RESERVED, RESERVED, RESERVED, RESERVED, RESERVED, RESERVED, RESERVED
};
#undef RESERVED
int i_height_save, i_width_save;
i_height_save = p_vpar->sequence.i_height;
i_width_save = p_vpar->sequence.i_width;
p_vpar->sequence.i_height = ntohl( GetBits( p_vpar->bit_stream, 12 ) );
p_vpar->sequence.i_width = ntohl( GetBits( p_vpar->bit_stream, 12 ) );
p_vpar->sequence.i_height = GetBits( p_vpar->bit_stream, 12 );
p_vpar->sequence.i_width = GetBits( p_vpar->bit_stream, 12 );
p_vpar->sequence.i_ratio = GetBits( p_vpar->bit_stream, 4 );
p_vpar->sequence.d_frame_rate =
d_frame_rate_table( GetBits( p_vpar->bit_stream, 4 ) );
......@@ -182,9 +200,14 @@ static void SequenceHeader( vpar_thread_t * p_vpar )
/*
* Sequence Extension
*/
if( ShowBits( p_vpar->bit_stream, 32 ) == EXTENSION_START_CODE )
NextStartCode( p_vpar );
if( ShowBits( &p_vpar->bit_stream, 32 ) == EXTENSION_START_CODE )
{
int i_dummy;
static int pi_chroma_nb_blocks[4] = {0, 1, 2, 4};
static (void *) ppf_chroma_pattern[4]( vpar_thread_t * ) =
{NULL, vpar_CodedPattern420,
vpar_CodedPattern422, vpar_CodedPattern444};
/* Parse sequence_extension */
DumpBits32( &p_vpar->bit_stream );
......@@ -192,6 +215,12 @@ static void SequenceHeader( vpar_thread_t * p_vpar )
DumpBits( &p_vpar->bit_stream, 12 );
p_vpar->sequence.b_progressive = GetBits( &p_vpar->bit_stream, 1 );
p_vpar->sequence.i_chroma_format = GetBits( &p_vpar->bit_stream, 2 );
p_vpar->sequence.i_chroma_width = p_vpar->sequence.i_width
>> (3-p_vpar->sequence.i_chroma_format);
p_vpar->sequence.i_chroma_nb_blocks = pi_chroma_nb_blocks
[p_vpar->sequence.i_chroma_format];
p_vpar->sequence.pf_decode_pattern = ppf_chroma_pattern
[p_vpar->sequence.i_chroma_format];
p_vpar->sequence.i_width |= GetBits( &p_vpar->bit_stream, 2 ) << 12;
p_vpar->sequence.i_height |= GetBits( &p_vpar->bit_stream, 2 ) << 12;
/* bit_rate_extension, marker_bit, vbv_buffer_size_extension, low_delay */
......@@ -202,180 +231,64 @@ static void SequenceHeader( vpar_thread_t * p_vpar )
p_vpar->sequence.d_frame_rate *= (i_dummy + 1)
/ (GetBits( &p_vpar->bit_stream, 5 ) + 1);
/* Extension and User data */
ExtensionAndUserData( p_vpar );
p_vpar->sequence.pf_decode_mv = vpar_MPEG2MotionVector;
}
else
{
/* It's an MPEG-1 stream. Put adequate parameters. */
p_vpar->sequence.b_progressive = 1;
p_vpar->i_chroma_format = CHROMA_420;
p_vpar->sequence.i_chroma_format = CHROMA_420;
p_vpar->sequence.i_chroma_width = p_vpar->sequence.i->width >> 2;
p_vpar->sequence.i_chroma_nb_blocks = 2;
p_vpar->sequence.pf_decode_pattern = vpar_CodedPattern420;
p_vpar->sequence.pf_decode_mv = vpar_MPEG1MotionVector;
}
p_vpar->sequence.i_mb_width = (p_vpar->sequence.i_width + 15) / 16;
p_vpar->sequence.i_mb_height = (p_vpar->sequence.b_progressive) ?
(p_vpar->sequence.i_height + 15) / 16 :
2 * (p_vpar->sequence.i_height + 31) / 32;
p_vpar->sequence.i_mb_size = p_vpar->sequence.i_mb_width
* p_vpar->sequence.i_mb_height;
p_vpar->sequence.i_width = (p_vpar->sequence.i_mb_width * 16);
p_vpar->sequence.i_height = (p_vpar->sequence.i_mb_height * 16);
p_vpar->sequence.i_size = p_vpar->sequence.i_width
* p_vpar->sequence.i_height;
if( p_vpar->sequence.i_width != i_width_save
|| p_vpar->sequence.i_height != i_height_save
|| p_vpar->sequence.p_frame_lum_lookup == NULL )
/* Slice Header functions */
if( p_vpar->sequence.i_height <= 2800 )
{
int i_x, i_y;
pel_lookup_table * p_fr, p_fl;
int i_fr, i_fl;
static int pi_chroma_size[4] = {0, 2, 1, 0}
#define Sequence p_vpar->sequence
/* The size of the pictures has changed. Probably a new sequence.
* We must recalculate the lookup matrices. */
/* First unlink the previous lookup matrices so that they can
* be freed in the future. */
if( Sequence.p_frame_lum_lookup != NULL )
if( p_vpar->sequence.i_scalable_mode != SC_DP )
{
UNLINK_LOOKUP( Sequence.p_frame_lum_lookup );
UNLINK_LOOKUP( Sequence.p_field_lum_lookup );
UNLINK_LOOKUP( Sequence.p_frame_chroma_lookup );
UNLINK_LOOKUP( Sequence.p_field_chroma_lookup );
p_vpar->sequence.pf_slice_header = SliceHeader00;
}
/* Allocate the new lookup tables. */
Sequence.p_frame_lum_lookup
= (pel_lookup_table_t *)malloc( sizeof( pel_lookup_table_t ) *
Sequence.i_width * Sequence.i_height );
Sequence.p_field_lum_lookup
= (pel_lookup_table_t *)malloc( sizeof( pel_lookup_table_t ) *
Sequence.i_width * Sequence.i_height );
Sequence.p_frame_chroma_lookup
= (pel_lookup_table_t *)malloc( sizeof( pel_lookup_table_t ) *
Sequence.i_width * Sequence.i_height
>> pi_chroma_size[Sequence.i_chroma_format] );
Sequence.p_field_chroma_lookup
= (pel_lookup_table_t *)malloc( sizeof( pel_lookup_table_t ) *
Sequence.i_width * Sequence.i_height
>> pi_chroma_size[Sequence.i_chroma_format] );
if( !Sequence.p_frame_lum_lookup ||!Sequence.p_field_lum_lookup
|| !Sequence.p_frame_chroma_lookup
||!Sequence.p_field_chroma_lookup )
else
{
intf_DbgMsg("vpar error: not enough memory for lookup tables");
p_vpar->b_error = 1;
return;
p_vpar->sequence.pf_slice_header = SliceHeader01;
}
/* Fill in the luminance lookup tables */
p_fr = &Sequence.p_frame_lum_lookup->pi_pel;
p_fl = &Sequence.p_field_lum_lookup->pi_pel;
i_fr = i_fl = 0;
for( i_y = 0; i_y < Sequence.i_height; i_y++ )
}
else
{
if( p_vpar->sequence.i_scalable_mode != SC_DP )
{
int i_mb_y, i_b_y, i_pos_y;
i_mb_y = i_y >> 4;
i_b_y = (i_y & 15) >> 3;
i_pos_y = (i_y & 7);
for( i_x = 0; i_x < Sequence.i_width; i_x++ )
{
int i_mb_x, i_b_x, i_pos_x;
i_mb_x = i_x >> 4;
i_b_x = (i_x & 15) >> 3;
i_pos_x = (i_x & 7);
p_fl[i_fr + i_x] = p_fr[i_fr + i_x]
= (i_mb_y*Sequence.i_mb_width + i_mb_y)*256
+ ((i_b_y << 1) + i_b_x)*64
+ i_pos_y*8 + i_pos_x;
}
i_fr += Sequence.i_width;
i_fl += Sequence.i_width << 1;
if( i_fl == Sequence.i_width*Sequence.i_height )
{
i_fl = Sequence.i_width;
}
p_vpar->sequence.pf_slice_header = SliceHeader10;
}
/* Fill in the chrominance lookup tables */
p_fr = &Sequence.p_frame_chroma_lookup->pi_pel;
p_fl = &Sequence.p_field_chroma_lookup->pi_pel;
i_fr = i_fl = 0;
switch( p_vpar->i_chroma_format )
else
{
case CHROMA_444:
/* That's the same as luminance */
memcopy( &Sequence.p_frame_croma_lookup->pi_pel,
&Sequence.p_frame_lum_lookup->pi_pel,
sizeof(PEL_P)*Sequence.i_height*Sequence.i_width );
memcopy( &Sequence.p_field_croma_lookup->pi_pel,
&Sequence.p_field_lum_lookup->pi_pel,
sizeof(PEL_P)*Sequence.i_height*Sequence.i_width );
case CHROMA_422:
for( i_y = 0; i_y < Sequence.i_height; i_y++ )
{
int i_mb_y, i_b_y, i_pos_y;
i_mb_y = i_y >> 4;
i_b_y = (i_y & 15) >> 3;
i_pos_y = (i_y & 7);
for( i_x = 0; i_x < (Sequence.i_width >> 1); i_x++ )
{
int i_mb_x, i_pos_x;
i_mb_x = i_x >> 3;
i_pos_x = (i_x & 7);
p_fl[i_fr + i_x] = p_fr[i_fr + i_x]
= (i_mb_y*Sequence.i_mb_width + i_mb_y)*128
+ i_b_y*64
+ i_pos_y*8 + i_pos_x;
}
i_fr += Sequence.i_width >> 1;
i_fl += Sequence.i_width;
if( i_fl == (Sequence.i_width*Sequence.i_height >> 1) )
{
i_fl = (Sequence.i_width >> 1);
}
}
p_vpar->sequence.pf_slice_header = SliceHeader11;
}
}
if( p_vpar->sequence.i_width != i_width_save
|| p_vpar->sequence.i_height != i_height_save
|| p_vpar->sequence.p_frame_lum_lookup == NULL )
{
case CHROMA_420:
for( i_y = 0; i_y < (Sequence.i_height >> 1); i_y++ )
{
int i_mb_y, i_pos_y;
i_mb_y = i_y >> 3;
i_pos_y = (i_y & 7);
for( i_x = 0; i_x < (Sequence.i_width >> 1); i_x++ )
{
int i_mb_x, i_pos_x;
i_mb_x = i_x >> 3;
i_pos_x = (i_x & 7);
p_fl[i_fr + i_x] = p_fr[i_fr + i_x]
= (i_mb_y*Sequence.i_mb_width + i_mb_y)*64
+ i_pos_y*8 + i_pos_x;
}
i_fr += Sequence.i_width >> 1;
i_fl += Sequence.i_width;
if( i_fl == (Sequence.i_width*Sequence.i_height >> 2) )
{
i_fl = Sequence.i_width >> 1;
}
}
} /* switch */
/* Link the new lookup tables so that they don't get freed all
* the time. */
LINK_LOOKUP( Sequence.p_frame_lum_lookup );
LINK_LOOKUP( Sequence.p_field_lum_lookup );
LINK_LOOKUP( Sequence.p_frame_chroma_lookup );
LINK_LOOKUP( Sequence.p_field_chroma_lookup );
#undef Sequence
}
/* Extension and User data */
ExtensionAndUserData( p_vpar );
}
/*****************************************************************************
......@@ -393,57 +306,233 @@ static void GroupHeader( vpar_thread_t * p_vpar )
*****************************************************************************/
static void PictureHeader( vpar_thread_t * p_vpar )
{
int i_coding_type;
mtime_t i_pts;
undec_picture_t * p_undec_p;
static (int *) ppf_macroblock_type[4] = {vpar_IMBType, vpar_PMBType,
vpar_BMBType, vpar_DMBType};
int i_structure;
int i_mb_address, i_mb_base, i_mb;
elem_t * p_y, p_u, p_v;
boolean_t b_parsable;
u32 i_dummy;
DumpBits( &p_vpar->bit_stream, 10 ); /* temporal_reference */
i_coding_type = GetBits( &p_vpar->bit_stream, 3 );
p_vpar->picture.i_coding_type = GetBits( &p_vpar->bit_stream, 3 );
p_vpar->picture.pf_macroblock_type = ppf_macroblock_type
[p_vpar->picture.i_coding_type];
DumpBits( &p_vpar->bit_stream, 16 ); /* vbv_delay */
if( ((i_coding_type == P_CODING_TYPE) &&
(p_vpar->sequence.p_forward == NULL)) ||
((i_coding_type == B_CODING_TYPE) &&
(p_vpar->sequence.p_forward == NULL ||
p_vpar->sequence.p_backward == NULL)) )
{
/* The picture cannot be decoded because we lack one of the
* reference frames */
p_vpar->picture.b_full_pel_forward_vector = GetBits( &p_vpar->bit_stream, 1 );
p_vpar->picture.i_forward_f_code = GetBits( &p_vpar->bit_stream, 3 );
p_vpar->picture.b_full_pel_backward_vector = GetBits( &p_vpar->bit_stream, 1 );
p_vpar->picture.i_backward_f_code = GetBits( &p_vpar->bit_stream, 3 );
/* extra_information_picture */
while( GetBits( &p_vpar->bit_stream, 1 ) )
{
DumpBits( &p_vpar->bit_stream, 8 );
}
/*
* Picture Coding Extension
*/
NextStartCode( p_vpar );
if( ShowBits( &p_vpar->bit_stream, 32 ) == EXTENSION_START_CODE )
{
/* Parse picture_coding_extension */
DumpBits32( &p_vpar->bit_stream );
/* extension_start_code_identifier */
DumpBits( &p_vpar->bit_stream, 4 );
/* Update the reference pointers */
ReferenceUpdate( p_vpar, i_coding_type, NULL );
p_vpar->picture.ppi_f_code[0][0] = GetBits( &p_vpar->bit_stream, 4 );
p_vpar->picture.ppi_f_code[0][1] = GetBits( &p_vpar->bit_stream, 4 );
p_vpar->picture.ppi_f_code[1][0] = GetBits( &p_vpar->bit_stream, 4 );
p_vpar->picture.ppi_f_code[1][1] = GetBits( &p_vpar->bit_stream, 4 );
p_vpar->picture.i_intra_dc_precision = GetBits( &p_vpar->bit_stream, 2 );
i_structure = GetBits( &p_vpar->bit_stream, 2 );
p_vpar->picture.b_top_field_first = GetBits( &p_vpar->bit_stream, 1 );
p_vpar->picture.b_frame_pred_frame_dct
= GetBits( &p_vpar->bit_stream, 1 );
p_vpar->picture.b_concealment_mv = GetBits( &p_vpar->bit_stream, 1 );
p_vpar->picture.b_q_scale_type = GetBits( &p_vpar->bit_stream, 1 );
p_vpar->picture.b_intra_vlc_format = GetBits( &p_vpar->bit_stream, 1 );
p_vpar->picture.b_alternate_scan = GetBits( &p_vpar->bit_stream, 1 );
/* repeat_first_field (ISO/IEC 13818-2 6.3.10 is cryptic and
* apparently the reference decoder doesn't use it, so trash it),
* chroma_420_type (obsolete) */
DumpBits( &p_vpar->bit_stream, 2 );
p_vpar->picture.b_progressive_frame = GetBits( &p_vpar->bit_stream, 1 );
/* Warn Synchro we have trashed a picture */
vpar_SynchroTrash( p_vpar, i_coding_type );
return;
/* composite_display_flag */
if( GetBits( &p_vpar->bit_stream, 1 ) )
{
/* v_axis, field_sequence, sub_carrier, burst_amplitude,
* sub_carrier_phase */
DumpBits( &p_vpar->bit_stream, 20 );
}
}
else
{
/* MPEG-1 compatibility flags */
p_vpar->i_intra_dc_precision = 0; /* 8 bits */
i_structure = FRAME_STRUCTURE;
p_vpar->b_frame_pred_frame_dct = TRUE;
p_vpar->picture.b_concealment_mv = 0;
p_vpar->picture.b_q_scale_type = 0;
p_vpar->picture.b_intra_vlc_format = 0;
p_vpar->picture.b_alternate_scan = 0; /* zigzag */
b_repeat_first_field = FALSE;
p_vpar->picture.b_progressive_frame = TRUE;
}
if( !(i_pts = vpar_SynchroChoose( p_vpar, i_coding_type )) )
if( p_vpar->picture.i_current_structure &&
(i_structure == FRAME_STRUCTURE ||
i_structure == p_vpar->picture.i_current_structure) )
{
/* Synchro has decided not to decode the picture */
/* We don't have the second field of the buffered frame. */
if( p_pvar->picture.p_picture != NULL )
{
ReferenceReplace( p_vpar,
p_vpar->picture.p_second_field_buffer->i_coding_type,
NULL );
for( i_mb = 0; i_mb < p_vpar->sequence.i_mb_size >> 1; i_mb++ )
{
vpar_DestroyMacroblock( &p_vpar->vfifo,
p_vpar->picture.pp_mb[i_mb] );
}
vout_DestroyPicture( p_vpar->p_vout, p_vpar->picture.p_picture );
}
/* Update the reference pointers */
p_pvar->picture.i_current_structure = 0;
intf_DbgMsg("vpar debug: odd number of field picture.");
}
if( p_vpar->picture.i_current_structure )
{
/* Second field of a frame. We will decode it if, and only if we
* have decoded the first frame. */
b_parsable = (p_vpar->picture.p_second_field_buffer != NULL);
}
else
{
/* Do we have the reference pictures ? */
b_parsable = !((i_coding_type == P_CODING_TYPE) &&
(p_vpar->sequence.p_forward == NULL)) ||
((i_coding_type == B_CODING_TYPE) &&
(p_vpar->sequence.p_forward == NULL ||
p_vpar->sequence.p_backward == NULL));
/* Does synchro say we have enough time to decode it ? */
b_parsable &&= vpar_SynchroChoose( p_vpar, i_coding_type, i_structure );
}
if( !b_parsable )
{
/* Update the reference pointers. */
ReferenceUpdate( p_vpar, i_coding_type, NULL );
/* Warn Synchro we have trashed a picture. */
vpar_SynchroTrash( p_vpar, i_coding_type, i_structure );
/* Update context. */
if( i_structure != FRAME_STRUCTURE )
p_vpar->picture.i_current_structure = i_structure;
p_vpar->picture.p_picture = NULL;
return;
}
/* OK, now we are sure we will decode the picture. Get a structure. */
p_undec_p = vpar_NewPicture( &p_vpar->vfifo );
/* Request a buffer from the video_output. */
p_undec_p->p_picture = vout_CreatePicture( p_vpar->p_vout,
SPLITTED_YUV_PICTURE,
p_vpar->sequence.i_width,
p_vpar->sequence.i_height,
p_vpar->sequence.i_chroma_format );
/* Initialize values */
p_undec_p->i_coding_type = i_conding_type;
p_undec_p->b_mpeg2 = p_vpar->sequence.b_mpeg2;
p_undec_p->i_mb_height = p_vpar->sequence.i_mb_height;
p_undec_p->i_mb_width = p_vpar->sequence.i_mb_width;
p_undec_p->i_pts = i_pts;
/* OK, now we are sure we will decode the picture. */
#define P_picture p_vpar->picture.p_picture
p_vpar->picture.b_error = FALSE;
if( !p_vpar->picture.i_current_structure )
{
/* This is a new frame. Get a structure from the video_output. */
P_picture = vout_CreatePicture( p_vpar->p_vout,
SPLITTED_YUV_PICTURE,
p_vpar->sequence.i_width,
p_vpar->sequence.i_height,
p_vpar->sequence.i_chroma_format );
/* Initialize values. */
P_picture->date = vpar_SynchroDecode( p_vpar, i_coding_type,
i_structure );
bzero( p_vpar->picture.pp_mb, MAX_MB*sizeof( macroblock_t * ) );
p_vpar->picture.i_lum_incr = - 8 + ( p_vpar->sequence.i_width
<< ( i_structure != FRAME_STRUCTURE ) );
p_vpar->picture.i_chroma_incr = -8 + ( p_vpar->sequence.i_width
<< (( i_structure != FRAME_STRUCTURE ) +
( 3 - p_vpar->sequence.i_chroma_format )) );
/* Update the reference pointers. */
ReferenceUpdate( p_vpar, i_coding_type, p_undec_p );
}
p_vpar->picture.i_current_structure |= i_structure;
p_vpar->picture.i_structure = i_structure;
p_vpar->picture.b_frame_structure = (i_structure == FRAME_STRUCTURE);
/* Initialize picture data for decoding. */
if( i_structure == BOTTOM_FIELD )
{
i_mb_base = p_vpar->sequence.i_mb_size >> 1;
}
else
{
i_mb_base = 0;
}
i_mb_address = 0;
/* Extension and User data. */
ExtensionAndUserData( p_vpar );
/* Picture data (ISO/IEC 13818-2 6.2.3.7). */
NextStartCode( p_vpar );
while( i_mb_address+i_mb_base < p_vpar->sequence.i_mb_size
&& !p_vpar->picture.b_error)
{
if( ((i_dummy = ShowBits( &p_vpar->bit_stream, 32 ))
< SLICE_START_CODE_MIN) ||
(i_dummy > SLICE_START_CODE_MAX) )
{
intf_DbgMsg("vpar debug: premature end of picture");
p_vpar->picture.b_error = TRUE;
break;
}
DumpBits32( &p_vpar->bit_stream );
/* Decode slice data. */
SliceHeader( p_vpar, &i_mb_address, i_mb_base, i_dummy & 255 );
}
if( p_vpar->picture.b_error )
{
/* Trash picture. */
for( i_mb = 0; p_vpar->picture.pp_mb[i_mb]; i_mb++ )
{
vpar_DestroyMacroblock( &p_vpar->vfifo, p_vpar->picture.pp_mb[i_mb] );
}
ReferenceReplace( p_vpar, p_vpar->picture.i_coding_type, NULL );
vout_DestroyPicture( p_vpar->p_vout, P_picture );
/* Prepare context for the next picture. */
P_picture = NULL:
}
else if( p_vpar->picture.i_current_structure == FRAME_STRUCTURE )
{
/* Frame completely parsed. */
for( i_mb = 0; i_mb < p_vpar->sequence.i_mb_size; i_mb++ )
{
vpar_DecodeMacroblock( &p_vpar->vfifo, p_vpar->picture.pp_mb[i_mb] );
}
/* Prepare context for the next picture. */
P_picture = NULL;
}
#undef P_picture
}
/*****************************************************************************
......@@ -455,11 +544,115 @@ static void __inline__ ReferenceUpdate( vpar_thread_t * p_vpar,
{
if( i_coding_type != B_CODING_TYPE )
{
/* The P picture would have become the new p_backward reference. */
vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_forward );
if( p_vpar->sequence.p_forward != NULL )
vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_forward );
p_vpar->sequence.p_forward = p_vpar->sequence.p_backward;
p_vpar->sequence.p_backward = p_newref;
if( p_newref != NULL )
vout_LinkPicture( p_vpar->p_vout, p_newref );
}
}
/*****************************************************************************
* ReferenceReplace : Replace the last reference pointer when we destroy
* a picture
*****************************************************************************/
static void __inline__ ReferenceReplace( vpar_thread_t * p_vpar,
int i_coding_type,
picture_t * p_newref )
{
if( i_coding_type != B_CODING_TYPE )
{
if( p_vpar->sequence.p_backward != NULL )
vout_UnlinkPicture( p_vpar->p_vout, p_vpar->sequence.p_backward );
p_vpar->sequence.p_backward = p_newref;
if( p_newref != NULL )
vout_LinkPicture( p_vpar->p_vout, p_newref );
}
}
/*****************************************************************************
* SliceHeaderXY : Parse the next slice structure
*****************************************************************************
* X = i_height > 2800 ?
* Y = scalable_mode == SC_DP ?
*****************************************************************************/
static void SliceHeader00( vpar_thread_t * p_vpar,
int * pi_mb_address, int i_mb_base,
u32 i_vert_code )
{
SliceHeader( p_vpar, pi_mb_address, i_mb_base, i_vert_code );
}
static void SliceHeader01( vpar_thread_t * p_vpar,
int * pi_mb_address, int i_mb_base,
u32 i_vert_code )
{
DumpBits( &p_vpar->bit_stream, 7 ); /* priority_breakpoint */
SliceHeader( p_vpar, pi_mb_address, i_mb_base, i_vert_code );
}
static void SliceHeader10( vpar_thread_t * p_vpar,
int * pi_mb_address, int i_mb_base,
u32 i_vert_code )
{
i_vert_code += GetBits( &p_vpar->bit_stream, 3 ) << 7;
SliceHeader( p_vpar, pi_mb_address, i_mb_base, i_vert_code );
}
static void SliceHeader11( vpar_thread_t * p_vpar,
int * pi_mb_address, int i_mb_base,
u32 i_vert_code )
{
i_vert_code += GetBits( &p_vpar->bit_stream, 3 ) << 7;
DumpBits( &p_vpar->bit_stream, 7 ); /* priority_breakpoint */
SliceHeader( p_vpar, pi_mb_address, i_mb_base, i_vert_code );
}
/*****************************************************************************
* SliceHeader : Parse the next slice structure
*****************************************************************************/
static __inline__ void SliceHeader( vpar_thread_t * p_vpar,
int * pi_mb_address, int i_mb_base,
u32 i_vert_code )
{
/* DC predictors initialization table */
static int pi_dc_dct_reinit[4] = {128,256,512,1024};
int i_mb_address_save = *pi_mb_address;
/* slice_vertical_position_extension and priority_breakpoint already done */
LoadQuantizerScale( p_vpar );
if( GetBits( &p_vpar->bit_stream, 1 ) )
{
/* intra_slice, slice_id */
DumpBits( &p_vpar->bit_stream, 8 );
/* extra_information_slice */
while( GetBits( &p_vpar->bit_stream, 1 ) )
{
DumpBits( &p_vpar->bit_stream, 8 );
}
}
*pi_mb_address = (i_vert_code - 1)*p_vpar->sequence.i_mb_width;
/* Reset DC coefficients predictors (ISO/IEC 13818-2 7.2.1). Why
* does the reference decoder put 0 instead of the normative values ? */
p_vpar->slice.pi_dct_pred[0] = p_vpar->slice.pi_dct_pred[1]
= p_vpar->slice.pi_dct_pred[2]
= pi_dc_dct_reinit[p_vpar->picture.i_intra_dc_precision];
/* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
bzero( p_vpar->slice.pppi_pmv, 8*sizeof(int) );
do
{
vpar_ParseMacroblock( p_vpar, pi_mb_address, i_mb_address_save,
i_mb_base );
i_mb_address_save = *pi_mb_address;
}
while( !ShowBits( &p_vpar->bit_stream, 23 ) );
}
/*****************************************************************************
......@@ -563,4 +756,3 @@ static void LinkMatrix( quant_matrix_t * p_matrix, int * pi_array )
p_matrix->pi_matrix = pi_array;
}
src/video_parser/vpar_motion.c 0 → 100644
View file @ e229f269
/*****************************************************************************
* vpar_motion.c : motion vectors parsing
* (c)1999 VideoLAN
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/uio.h>
#include <X11/Xlib.h>
#include <X11/extensions/XShm.h>
#include "config.h"
#include "common.h"
#include "mtime.h"
#include "vlc_thread.h"
#include "intf_msg.h"
#include "debug.h" /* ?? temporaire, requis par netlist.h */
#include "input.h"
#include "input_netlist.h"
#include "decoder_fifo.h"
#include "video.h"
#include "video_output.h"
#include "video_parser.h"
#include "video_fifo.h"
#include "video_decoder.h"
/*
* Local prototypes
*/
/*****************************************************************************
* vpar_MPEG1MotionVector : Parse the next MPEG-1 motion vector
*****************************************************************************/
void vpar_MPEG1MotionVector( vpar_thread_t * p_vpar, int i_mv )
{
}
/*****************************************************************************
* vpar_MPEG2MotionVector : Parse the next MPEG-2 motion vector
*****************************************************************************/
void vpar_MPEG2MotionVector( vpar_thread_t * p_vpar, int i_mv )
{
}
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