/*****************************************************************************
* vpar_headers.h : video parser : headers parsing
- * (c)1999 VideoLAN
- *****************************************************************************
*****************************************************************************
+ * Copyright (C) 1999, 2000 VideoLAN
+ *
+ * Authors:
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
* Requires:
* "config.h"
* "common.h"
* "mtime.h"
- * "vlc_thread.h"
+ * "threads.h"
* "input.h"
* "video.h"
* "video_output.h"
* "decoder_fifo.h"
* "video_fifo.h"
*****************************************************************************/
-
-/*****************************************************************************
- * Function pointers
- *****************************************************************************/
-struct vpar_thread_s;
-
-typedef void (*f_slice_header_t)( struct vpar_thread_s*, int*, int, u32);
-typedef void (*f_chroma_pattern_t)( struct vpar_thread_s* );
-typedef int (*f_macroblock_type_t)( struct vpar_thread_s* );
/*****************************************************************************
* quant_matrix_t : Quantization Matrix
/*****************************************************************************
* sequence_t : sequence descriptor
+ *****************************************************************************
+ * This structure should only be changed when reading the sequence header,
+ * or exceptionnally some extension structures (like quant_matrix).
*****************************************************************************/
typedef struct sequence_s
{
- u32 i_height, i_width, i_size;
+ u32 i_height, i_width; /* height and width of the lum
+ * comp of the picture */
+ u32 i_size; /* total number of pel of the lum comp */
u32 i_mb_height, i_mb_width, i_mb_size;
- unsigned int i_aspect_ratio;
- double d_frame_rate;
- boolean_t b_mpeg2;
- boolean_t b_progressive;
- unsigned int i_scalable_mode;
- f_slice_header_t pf_slice_header;
+ /* the same, in macroblock units */
+ unsigned int i_aspect_ratio; /* height/width display ratio */
+ unsigned int i_matrix_coefficients;/* coeffs of the YUV transform */
+ float r_frame_rate; /* theoritical frame rate in fps */
+ boolean_t b_mpeg2; /* guess */
+ boolean_t b_progressive; /* progressive (ie.
+ * non-interlaced) frame */
+ unsigned int i_scalable_mode; /* scalability ; unsupported, but
+ * modifies the syntax of the binary
+ * stream. */
quant_matrix_t intra_quant, nonintra_quant;
quant_matrix_t chroma_intra_quant, chroma_nonintra_quant;
- void (*pf_decode_mv)( struct vpar_thread_s *, int );
- f_chroma_pattern_t pf_decode_pattern;
+ /* current quantization matrices */
/* Chromatic information */
- unsigned int i_chroma_format;
- int i_chroma_nb_blocks;
- u32 i_chroma_width;
+ unsigned int i_chroma_format; /* see CHROMA_* below */
+ int i_chroma_nb_blocks; /* number of chroma blocks */
+ u32 i_chroma_width;/* width of a line of the chroma comp */
u32 i_chroma_mb_width, i_chroma_mb_height;
+ /* size of a macroblock in the chroma buffer
+ * (eg. 8x8 or 8x16 or 16x16) */
/* Parser context */
- picture_t * p_forward;
- picture_t * p_backward;
+ picture_t * p_forward; /* current forward reference frame */
+ picture_t * p_backward; /* current backward reference frame */
/* Copyright extension */
- boolean_t b_copyright_flag; /* Whether the following
- information is significant
- or not. */
- u8 i_copyright_id;
- boolean_t b_original;
- u64 i_copyright_nb;
+ boolean_t b_copyright_flag; /* Whether the following
+ information is significant
+ or not. */
+ u8 i_copyright_id;
+ boolean_t b_original;
+ u64 i_copyright_nb;
} sequence_t;
/*****************************************************************************
* picture_parsing_t : parser context descriptor
+ *****************************************************************************
+ * This structure should only be changed when reading the picture header.
*****************************************************************************/
typedef struct picture_parsing_s
{
+ /* ISO/CEI 11172-2 backward compatibility */
boolean_t pb_full_pel_vector[2];
int i_forward_f_code, i_backward_f_code;
+ /* Values from the picture_coding_extension. Please refer to ISO/IEC
+ * 13818-2. */
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;
boolean_t b_repeat_first_field;
- int i_l_stride, i_c_stride;
-
- /* 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;
- f_macroblock_type_t pf_macroblock_type;
+ boolean_t b_frame_structure; /* i_structure == FRAME_STRUCTURE */
- /* Scalability variables */
- int i_spatial_temporal_weight_code_table_index;
-
- boolean_t b_error;
-} picture_parsing_t;
+ picture_t * p_picture; /* picture buffer from vout */
+ int i_current_structure; /* current parsed structure of
+ * p_picture (second field ?) */
+#ifdef VDEC_SMP
+ macroblock_t * pp_mb[MAX_MB]; /* macroblock buffer to
+ * send to the vdec thread(s) */
+#endif
+ boolean_t b_error; /* parsing error, try to recover */
-/*****************************************************************************
- * 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;
+ int i_l_stride, i_c_stride;
+ /* number of coeffs to jump when changing
+ * lines (different with field pictures) */
+} picture_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
+#define PICTURE_START_CODE 0x100L
+#define SLICE_START_CODE_MIN 0x101L
+#define SLICE_START_CODE_MAX 0x1AFL
+#define USER_DATA_START_CODE 0x1B2L
+#define SEQUENCE_HEADER_CODE 0x1B3L
+#define SEQUENCE_ERROR_CODE 0x1B4L
+#define EXTENSION_START_CODE 0x1B5L
+#define SEQUENCE_END_CODE 0x1B7L
+#define GROUP_START_CODE 0x1B8L
/* extension start code IDs */
#define SEQUENCE_EXTENSION_ID 1
#define SC_SNR 3
#define SC_TEMP 4
+/* Chroma types */
+#define CHROMA_420 1
+#define CHROMA_422 2
+#define CHROMA_444 3
+
/* Pictures types */
#define I_CODING_TYPE 1
#define P_CODING_TYPE 2
#define BOTTOM_FIELD 2
#define FRAME_STRUCTURE 3
-
/*****************************************************************************
* Prototypes
*****************************************************************************/
projects / vlc / blobdiff