343 lines
13 KiB
C
343 lines
13 KiB
C
|
/*
|
||
|
|
* common functions for Indeo Video Interactive codecs (Indeo4 and Indeo5)
|
||
|
|
*
|
||
|
|
* Copyright (c) 2009 Maxim Poliakovski
|
||
|
|
*
|
||
|
|
* This file is part of FFmpeg.
|
||
|
|
*
|
||
|
|
* FFmpeg is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU Lesser General Public
|
||
|
|
* License as published by the Free Software Foundation; either
|
||
|
|
* version 2.1 of the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* FFmpeg 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
|
||
|
|
* Lesser General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Lesser General Public
|
||
|
|
* License along with FFmpeg; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @file
|
||
|
|
* This file contains structures and macros shared by both Indeo4 and
|
||
|
|
* Indeo5 decoders.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef AVCODEC_IVI_H
|
||
|
|
#define AVCODEC_IVI_H
|
||
|
|
|
||
|
|
#include "avcodec.h"
|
||
|
|
#include "get_bits.h"
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Indeo 4 frame types.
|
||
|
|
*/
|
||
|
|
enum {
|
||
|
|
IVI4_FRAMETYPE_INTRA = 0,
|
||
|
|
IVI4_FRAMETYPE_INTRA1 = 1, ///< intra frame with slightly different bitstream coding
|
||
|
|
IVI4_FRAMETYPE_INTER = 2, ///< non-droppable P-frame
|
||
|
|
IVI4_FRAMETYPE_BIDIR = 3, ///< bidirectional frame
|
||
|
|
IVI4_FRAMETYPE_INTER_NOREF = 4, ///< droppable P-frame
|
||
|
|
IVI4_FRAMETYPE_NULL_FIRST = 5, ///< empty frame with no data
|
||
|
|
IVI4_FRAMETYPE_NULL_LAST = 6 ///< empty frame with no data
|
||
|
|
};
|
||
|
|
|
||
|
|
#define IVI_VLC_BITS 13 ///< max number of bits of the ivi's huffman codes
|
||
|
|
#define IVI5_IS_PROTECTED 0x20
|
||
|
|
|
||
|
|
/**
|
||
|
|
* huffman codebook descriptor
|
||
|
|
*/
|
||
|
|
typedef struct IVIHuffDesc {
|
||
|
|
int32_t num_rows;
|
||
|
|
uint8_t xbits[16];
|
||
|
|
} IVIHuffDesc;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* macroblock/block huffman table descriptor
|
||
|
|
*/
|
||
|
|
typedef struct IVIHuffTab {
|
||
|
|
int32_t tab_sel; /// index of one of the predefined tables
|
||
|
|
/// or "7" for custom one
|
||
|
|
VLC *tab; /// pointer to the table associated with tab_sel
|
||
|
|
|
||
|
|
/// the following are used only when tab_sel == 7
|
||
|
|
IVIHuffDesc cust_desc; /// custom Huffman codebook descriptor
|
||
|
|
VLC cust_tab; /// vlc table for custom codebook
|
||
|
|
} IVIHuffTab;
|
||
|
|
|
||
|
|
enum {
|
||
|
|
IVI_MB_HUFF = 0, /// Huffman table is used for coding macroblocks
|
||
|
|
IVI_BLK_HUFF = 1 /// Huffman table is used for coding blocks
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Common scan patterns (defined in ivi_common.c)
|
||
|
|
*/
|
||
|
|
extern const uint8_t ff_ivi_vertical_scan_8x8[64];
|
||
|
|
extern const uint8_t ff_ivi_horizontal_scan_8x8[64];
|
||
|
|
extern const uint8_t ff_ivi_direct_scan_4x4[16];
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Declare inverse transform function types
|
||
|
|
*/
|
||
|
|
typedef void (InvTransformPtr)(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags);
|
||
|
|
typedef void (DCTransformPtr) (const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size);
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* run-value (RLE) table descriptor
|
||
|
|
*/
|
||
|
|
typedef struct RVMapDesc {
|
||
|
|
uint8_t eob_sym; ///< end of block symbol
|
||
|
|
uint8_t esc_sym; ///< escape symbol
|
||
|
|
uint8_t runtab[256];
|
||
|
|
int8_t valtab[256];
|
||
|
|
} RVMapDesc;
|
||
|
|
|
||
|
|
extern const RVMapDesc ff_ivi_rvmap_tabs[9];
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* information for Indeo macroblock (16x16, 8x8 or 4x4)
|
||
|
|
*/
|
||
|
|
typedef struct IVIMbInfo {
|
||
|
|
int16_t xpos;
|
||
|
|
int16_t ypos;
|
||
|
|
uint32_t buf_offs; ///< address in the output buffer for this mb
|
||
|
|
uint8_t type; ///< macroblock type: 0 - INTRA, 1 - INTER
|
||
|
|
uint8_t cbp; ///< coded block pattern
|
||
|
|
int8_t q_delta; ///< quant delta
|
||
|
|
int8_t mv_x; ///< motion vector (x component)
|
||
|
|
int8_t mv_y; ///< motion vector (y component)
|
||
|
|
int8_t b_mv_x; ///< second motion vector (x component)
|
||
|
|
int8_t b_mv_y; ///< second motion vector (y component)
|
||
|
|
} IVIMbInfo;
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* information for Indeo tile
|
||
|
|
*/
|
||
|
|
typedef struct IVITile {
|
||
|
|
int xpos;
|
||
|
|
int ypos;
|
||
|
|
int width;
|
||
|
|
int height;
|
||
|
|
int mb_size;
|
||
|
|
int is_empty; ///< = 1 if this tile doesn't contain any data
|
||
|
|
int data_size; ///< size of the data in bytes
|
||
|
|
int num_MBs; ///< number of macroblocks in this tile
|
||
|
|
IVIMbInfo *mbs; ///< array of macroblock descriptors
|
||
|
|
IVIMbInfo *ref_mbs; ///< ptr to the macroblock descriptors of the reference tile
|
||
|
|
} IVITile;
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* information for Indeo wavelet band
|
||
|
|
*/
|
||
|
|
typedef struct IVIBandDesc {
|
||
|
|
int plane; ///< plane number this band belongs to
|
||
|
|
int band_num; ///< band number
|
||
|
|
int width;
|
||
|
|
int height;
|
||
|
|
int aheight; ///< aligned band height
|
||
|
|
const uint8_t *data_ptr; ///< ptr to the first byte of the band data
|
||
|
|
int data_size; ///< size of the band data
|
||
|
|
int16_t *buf; ///< pointer to the output buffer for this band
|
||
|
|
int16_t *ref_buf; ///< pointer to the reference frame buffer (for motion compensation)
|
||
|
|
int16_t *b_ref_buf; ///< pointer to the second reference frame buffer (for motion compensation)
|
||
|
|
int16_t *bufs[4]; ///< array of pointers to the band buffers
|
||
|
|
ptrdiff_t pitch; ///< pitch associated with the buffers above
|
||
|
|
int is_empty; ///< = 1 if this band doesn't contain any data
|
||
|
|
int mb_size; ///< macroblock size
|
||
|
|
int blk_size; ///< block size
|
||
|
|
int is_halfpel; ///< precision of the motion compensation: 0 - fullpel, 1 - halfpel
|
||
|
|
int inherit_mv; ///< tells if motion vector is inherited from reference macroblock
|
||
|
|
int inherit_qdelta; ///< tells if quantiser delta is inherited from reference macroblock
|
||
|
|
int qdelta_present; ///< tells if Qdelta signal is present in the bitstream (Indeo5 only)
|
||
|
|
int quant_mat; ///< dequant matrix index
|
||
|
|
int glob_quant; ///< quant base for this band
|
||
|
|
const uint8_t *scan; ///< ptr to the scan pattern
|
||
|
|
int scan_size; ///< size of the scantable
|
||
|
|
|
||
|
|
IVIHuffTab blk_vlc; ///< vlc table for decoding block data
|
||
|
|
|
||
|
|
int num_corr; ///< number of correction entries
|
||
|
|
uint8_t corr[61*2]; ///< rvmap correction pairs
|
||
|
|
int rvmap_sel; ///< rvmap table selector
|
||
|
|
RVMapDesc *rv_map; ///< ptr to the RLE table for this band
|
||
|
|
int num_tiles; ///< number of tiles in this band
|
||
|
|
IVITile *tiles; ///< array of tile descriptors
|
||
|
|
InvTransformPtr *inv_transform;
|
||
|
|
int transform_size;
|
||
|
|
DCTransformPtr *dc_transform;
|
||
|
|
int is_2d_trans; ///< 1 indicates that the two-dimensional inverse transform is used
|
||
|
|
int32_t checksum; ///< for debug purposes
|
||
|
|
int checksum_present;
|
||
|
|
int bufsize; ///< band buffer size in bytes
|
||
|
|
const uint16_t *intra_base; ///< quantization matrix for intra blocks
|
||
|
|
const uint16_t *inter_base; ///< quantization matrix for inter blocks
|
||
|
|
const uint8_t *intra_scale; ///< quantization coefficient for intra blocks
|
||
|
|
const uint8_t *inter_scale; ///< quantization coefficient for inter blocks
|
||
|
|
} IVIBandDesc;
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* color plane (luma or chroma) information
|
||
|
|
*/
|
||
|
|
typedef struct IVIPlaneDesc {
|
||
|
|
uint16_t width;
|
||
|
|
uint16_t height;
|
||
|
|
uint8_t num_bands; ///< number of bands this plane subdivided into
|
||
|
|
IVIBandDesc *bands; ///< array of band descriptors
|
||
|
|
} IVIPlaneDesc;
|
||
|
|
|
||
|
|
|
||
|
|
typedef struct IVIPicConfig {
|
||
|
|
uint16_t pic_width;
|
||
|
|
uint16_t pic_height;
|
||
|
|
uint16_t chroma_width;
|
||
|
|
uint16_t chroma_height;
|
||
|
|
uint16_t tile_width;
|
||
|
|
uint16_t tile_height;
|
||
|
|
uint8_t luma_bands;
|
||
|
|
uint8_t chroma_bands;
|
||
|
|
} IVIPicConfig;
|
||
|
|
|
||
|
|
typedef struct IVI45DecContext {
|
||
|
|
GetBitContext gb;
|
||
|
|
RVMapDesc rvmap_tabs[9]; ///< local corrected copy of the static rvmap tables
|
||
|
|
|
||
|
|
uint32_t frame_num;
|
||
|
|
int frame_type;
|
||
|
|
int prev_frame_type; ///< frame type of the previous frame
|
||
|
|
uint32_t data_size; ///< size of the frame data in bytes from picture header
|
||
|
|
int is_scalable;
|
||
|
|
const uint8_t *frame_data; ///< input frame data pointer
|
||
|
|
int inter_scal; ///< signals a sequence of scalable inter frames
|
||
|
|
uint32_t frame_size; ///< frame size in bytes
|
||
|
|
uint32_t pic_hdr_size; ///< picture header size in bytes
|
||
|
|
uint8_t frame_flags;
|
||
|
|
uint16_t checksum; ///< frame checksum
|
||
|
|
|
||
|
|
IVIPicConfig pic_conf;
|
||
|
|
IVIPlaneDesc planes[3]; ///< color planes
|
||
|
|
|
||
|
|
int buf_switch; ///< used to switch between three buffers
|
||
|
|
int dst_buf; ///< buffer index for the currently decoded frame
|
||
|
|
int ref_buf; ///< inter frame reference buffer index
|
||
|
|
int ref2_buf; ///< temporal storage for switching buffers
|
||
|
|
int b_ref_buf; ///< second reference frame buffer index
|
||
|
|
|
||
|
|
IVIHuffTab mb_vlc; ///< current macroblock table descriptor
|
||
|
|
IVIHuffTab blk_vlc; ///< current block table descriptor
|
||
|
|
|
||
|
|
uint8_t rvmap_sel;
|
||
|
|
uint8_t in_imf;
|
||
|
|
uint8_t in_q; ///< flag for explicitly stored quantiser delta
|
||
|
|
uint8_t pic_glob_quant;
|
||
|
|
uint8_t unknown1;
|
||
|
|
|
||
|
|
uint16_t gop_hdr_size;
|
||
|
|
uint8_t gop_flags;
|
||
|
|
uint32_t lock_word;
|
||
|
|
|
||
|
|
int show_indeo4_info;
|
||
|
|
uint8_t has_b_frames;
|
||
|
|
uint8_t has_transp; ///< transparency mode status: 1 - enabled
|
||
|
|
uint8_t uses_tiling;
|
||
|
|
uint8_t uses_haar;
|
||
|
|
uint8_t uses_fullpel;
|
||
|
|
|
||
|
|
int (*decode_pic_hdr) (struct IVI45DecContext *ctx, AVCodecContext *avctx);
|
||
|
|
int (*decode_band_hdr) (struct IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx);
|
||
|
|
int (*decode_mb_info) (struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx);
|
||
|
|
void (*switch_buffers) (struct IVI45DecContext *ctx);
|
||
|
|
int (*is_nonnull_frame)(struct IVI45DecContext *ctx);
|
||
|
|
|
||
|
|
int gop_invalid;
|
||
|
|
int buf_invalid[4];
|
||
|
|
|
||
|
|
int is_indeo4;
|
||
|
|
|
||
|
|
AVFrame *p_frame;
|
||
|
|
int got_p_frame;
|
||
|
|
} IVI45DecContext;
|
||
|
|
|
||
|
|
/** compare some properties of two pictures */
|
||
|
|
static inline int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
|
||
|
|
{
|
||
|
|
return str1->pic_width != str2->pic_width || str1->pic_height != str2->pic_height ||
|
||
|
|
str1->chroma_width != str2->chroma_width || str1->chroma_height != str2->chroma_height ||
|
||
|
|
str1->tile_width != str2->tile_width || str1->tile_height != str2->tile_height ||
|
||
|
|
str1->luma_bands != str2->luma_bands || str1->chroma_bands != str2->chroma_bands;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** calculate number of tiles in a stride */
|
||
|
|
#define IVI_NUM_TILES(stride, tile_size) (((stride) + (tile_size) - 1) / (tile_size))
|
||
|
|
|
||
|
|
/** calculate number of macroblocks in a tile */
|
||
|
|
#define IVI_MBs_PER_TILE(tile_width, tile_height, mb_size) \
|
||
|
|
((((tile_width) + (mb_size) - 1) / (mb_size)) * (((tile_height) + (mb_size) - 1) / (mb_size)))
|
||
|
|
|
||
|
|
/** convert unsigned values into signed ones (the sign is in the LSB) */
|
||
|
|
#define IVI_TOSIGNED(val) (-(((val) >> 1) ^ -((val) & 1)))
|
||
|
|
|
||
|
|
/** scale motion vector */
|
||
|
|
static inline int ivi_scale_mv(int mv, int mv_scale)
|
||
|
|
{
|
||
|
|
return (mv + (mv > 0) + (mv_scale - 1)) >> mv_scale;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Initialize static codes used for macroblock and block decoding.
|
||
|
|
*/
|
||
|
|
void ff_ivi_init_static_vlc(void);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Decode a huffman codebook descriptor from the bitstream
|
||
|
|
* and select specified huffman table.
|
||
|
|
*
|
||
|
|
* @param[in,out] gb the GetBit context
|
||
|
|
* @param[in] desc_coded flag signalling if table descriptor was coded
|
||
|
|
* @param[in] which_tab codebook purpose (IVI_MB_HUFF or IVI_BLK_HUFF)
|
||
|
|
* @param[out] huff_tab pointer to the descriptor of the selected table
|
||
|
|
* @param[in] avctx AVCodecContext pointer
|
||
|
|
* @return zero on success, negative value otherwise
|
||
|
|
*/
|
||
|
|
int ff_ivi_dec_huff_desc(GetBitContext *gb, int desc_coded, int which_tab,
|
||
|
|
IVIHuffTab *huff_tab, AVCodecContext *avctx);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Initialize planes (prepares descriptors, allocates buffers etc).
|
||
|
|
*
|
||
|
|
* @param[in,out] planes pointer to the array of the plane descriptors
|
||
|
|
* @param[in] cfg pointer to the ivi_pic_config structure describing picture layout
|
||
|
|
* @param[in] is_indeo4 flag signalling if it is Indeo 4 or not
|
||
|
|
* @return result code: 0 - OK
|
||
|
|
*/
|
||
|
|
int ff_ivi_init_planes(AVCodecContext *avctx, IVIPlaneDesc *planes,
|
||
|
|
const IVIPicConfig *cfg, int is_indeo4);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Initialize tile and macroblock descriptors.
|
||
|
|
*
|
||
|
|
* @param[in,out] planes pointer to the array of the plane descriptors
|
||
|
|
* @param[in] tile_width tile width
|
||
|
|
* @param[in] tile_height tile height
|
||
|
|
* @return result code: 0 - OK
|
||
|
|
*/
|
||
|
|
int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height);
|
||
|
|
|
||
|
|
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
|
||
|
|
AVPacket *avpkt);
|
||
|
|
int ff_ivi_decode_close(AVCodecContext *avctx);
|
||
|
|
|
||
|
|
#endif /* AVCODEC_IVI_H */
|