#include "internal.h"
#include "dsputil.h"
#include "avcodec.h"
#include "mpegvideo.h"
#include "vc1.h"
#include "vc1data.h"
#include "msmpeg4data.h"
#include "unary.h"
#include "simple_idct.h"
#include <assert.h>
Go to the source code of this file.
Defines | |
| #define | INIT_LUT(lumscale, lumshift, luty, lutuv) |
Enumerations | |
VC-1 Bitplane decoding | |
| |
| enum | Imode { IMODE_RAW, IMODE_NORM2, IMODE_DIFF2, IMODE_NORM6, IMODE_DIFF6, IMODE_ROWSKIP, IMODE_COLSKIP, IMODE_RAW, IMODE_NORM2, IMODE_DIFF2, IMODE_NORM6, IMODE_DIFF6, IMODE_ROWSKIP, IMODE_COLSKIP } |
| Imode types. More... | |
Functions | |
| static void | decode_rowskip (uint8_t *plane, int width, int height, int stride, GetBitContext *gb) |
| Decode rows by checking if they are skipped. | |
| static void | decode_colskip (uint8_t *plane, int width, int height, int stride, GetBitContext *gb) |
| Decode columns by checking if they are skipped. | |
| static int | bitplane_decoding (uint8_t *data, int *raw_flag, VC1Context *v) |
| Decode a bitplane's bits. | |
| static int | vop_dquant_decoding (VC1Context *v) |
| VOP Dquant decoding. | |
| static int | decode_sequence_header_adv (VC1Context *v, GetBitContext *gb) |
| int | ff_vc1_decode_sequence_header (AVCodecContext *avctx, VC1Context *v, GetBitContext *gb) |
| Decode Simple/Main Profiles sequence header. | |
| int | ff_vc1_decode_entry_point (AVCodecContext *avctx, VC1Context *v, GetBitContext *gb) |
| int | ff_vc1_parse_frame_header (VC1Context *v, GetBitContext *gb) |
| int | ff_vc1_parse_frame_header_adv (VC1Context *v, GetBitContext *gb) |
| int | ff_vc1_init_common (VC1Context *v) |
| Init VC-1 specific tables and VC1Context members. | |
Variables | |
| static const uint32_t | vc1_ac_tables [AC_MODES][186][2] |
| static const uint16_t | vlc_offs [] |
Definition in file vc1.c.
| #define INIT_LUT | ( | lumscale, | |||
| lumshift, | |||||
| luty, | |||||
| lutuv | ) |
Value:
if (!lumscale) { \ scale = -64; \ shift = (255 - lumshift * 2) << 6; \ if (lumshift > 31) \ shift += 128 << 6; \ } else { \ scale = lumscale + 32; \ if (lumshift > 31) \ shift = (lumshift - 64) << 6; \ else \ shift = lumshift << 6; \ } \ for (i = 0; i < 256; i++) { \ luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6); \ lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6); \ }
Definition at line 804 of file vc1.c.
Referenced by ff_vc1_parse_frame_header_adv().
| enum Imode |
| static int bitplane_decoding | ( | uint8_t * | data, | |
| int * | raw_flag, | |||
| VC1Context * | v | |||
| ) | [static] |
Decode a bitplane's bits.
| data | bitplane where to store the decode bits | |
| [out] | raw_flag | pointer to the flag indicating that this bitplane is not coded explicitly |
| v | VC-1 context for bit reading and logging |
Definition at line 116 of file vc1.c.
Referenced by ff_vc1_parse_frame_header(), and ff_vc1_parse_frame_header_adv().
| static void decode_colskip | ( | uint8_t * | plane, | |
| int | width, | |||
| int | height, | |||
| int | stride, | |||
| GetBitContext * | gb | |||
| ) | [static] |
Decode columns by checking if they are skipped.
| plane | Buffer to store decoded bits | |
| [in] | width | Width of this buffer |
| [in] | height | Height of this buffer |
| [in] | stride | of this buffer |
Definition at line 93 of file vc1.c.
Referenced by bitplane_decoding().
| static void decode_rowskip | ( | uint8_t * | plane, | |
| int | width, | |||
| int | height, | |||
| int | stride, | |||
| GetBitContext * | gb | |||
| ) | [static] |
Decode rows by checking if they are skipped.
| plane | Buffer to store decoded bits | |
| [in] | width | Width of this buffer |
| [in] | height | Height of this buffer |
| [in] | stride | of this buffer |
Definition at line 71 of file vc1.c.
Referenced by bitplane_decoding().
| static int decode_sequence_header_adv | ( | VC1Context * | v, | |
| GetBitContext * | gb | |||
| ) | [static] |
| int ff_vc1_decode_entry_point | ( | AVCodecContext * | avctx, | |
| VC1Context * | v, | |||
| GetBitContext * | gb | |||
| ) |
Definition at line 528 of file vc1.c.
Referenced by vc1_decode_frame(), vc1_decode_init(), and vc1_extract_headers().
| int ff_vc1_decode_sequence_header | ( | AVCodecContext * | avctx, | |
| VC1Context * | v, | |||
| GetBitContext * | gb | |||
| ) |
Decode Simple/Main Profiles sequence header.
| avctx | Codec context | |
| gb | GetBit context initialized from Codec context extra_data |
Definition at line 294 of file vc1.c.
Referenced by vc1_decode_init(), and vc1_extract_headers().
| int ff_vc1_init_common | ( | VC1Context * | v | ) |
Init VC-1 specific tables and VC1Context members.
| v | The VC1Context to initialize |
Definition at line 1490 of file vc1.c.
Referenced by vc1_decode_init(), and vc1_parse_init().
| int ff_vc1_parse_frame_header | ( | VC1Context * | v, | |
| GetBitContext * | gb | |||
| ) |
| int ff_vc1_parse_frame_header_adv | ( | VC1Context * | v, | |
| GetBitContext * | gb | |||
| ) |
| static int vop_dquant_decoding | ( | VC1Context * | v | ) | [static] |
VOP Dquant decoding.
| v | VC-1 Context |
Definition at line 245 of file vc1.c.
Referenced by ff_vc1_parse_frame_header(), and ff_vc1_parse_frame_header_adv().
const uint32_t vc1_ac_tables[AC_MODES][186][2] [static] |
const uint16_t vlc_offs[] [static] |
Initial value:
{
0, 520, 552, 616, 1128, 1160, 1224, 1740, 1772, 1836, 1900, 2436,
2986, 3050, 3610, 4154, 4218, 4746, 5326, 5390, 5902, 6554, 7658, 8342,
9304, 9988, 10630, 11234, 12174, 13006, 13560, 14232, 14786, 15432, 16350, 17522,
20372, 21818, 22330, 22394, 23166, 23678, 23742, 24820, 25332, 25396, 26460, 26980,
27048, 27592, 27600, 27608, 27616, 27624, 28224, 28258, 28290, 28802, 28834, 28866,
29378, 29412, 29444, 29960, 29994, 30026, 30538, 30572, 30604, 31120, 31154, 31186,
31714, 31746, 31778, 32306, 32340, 32372
}
Definition at line 1475 of file vc1.c.
Referenced by ff_vc1_init_common().
1.5.8