Libav
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This file contains functions and data shared by both Indeo4 and Indeo5 decoders. More...
#include <inttypes.h>
#include "libavutil/attributes.h"
#include "libavutil/imgutils.h"
#include "libavutil/timer.h"
#include "avcodec.h"
#include "get_bits.h"
#include "internal.h"
#include "mathops.h"
#include "ivi_common.h"
#include "ivi_dsp.h"
Go to the source code of this file.
Macros | |
#define | BITSTREAM_READER_LE |
Typedefs | |
typedef void(* | ivi_mc_func )(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type) |
typedef void(* | ivi_mc_avg_func )(int16_t *buf, const int16_t *ref_buf1, const int16_t *ref_buf2, uint32_t pitch, int mc_type, int mc_type2) |
Functions | |
static int | ivi_mc (IVIBandDesc *band, ivi_mc_func mc, ivi_mc_avg_func mc_avg, int offs, int mv_x, int mv_y, int mv_x2, int mv_y2, int mc_type, int mc_type2) |
static uint16_t | inv_bits (uint16_t val, int nbits) |
Reverse "nbits" bits of the value "val" and return the result in the least significant bits. More... | |
static int | ivi_create_huff_from_desc (const IVIHuffDesc *cb, VLC *vlc, int flag) |
av_cold void | ff_ivi_init_static_vlc (void) |
Initialize static codes used for macroblock and block decoding. More... | |
static void | ivi_huff_desc_copy (IVIHuffDesc *dst, const IVIHuffDesc *src) |
static int | ivi_huff_desc_cmp (const IVIHuffDesc *desc1, const IVIHuffDesc *desc2) |
int | ff_ivi_dec_huff_desc (GetBitContext *gb, int desc_coded, int which_tab, IVIHuffTab *huff_tab, AVCodecContext *avctx) |
Decode a huffman codebook descriptor from the bitstream and select specified huffman table. More... | |
static av_cold void | ivi_free_buffers (IVIPlaneDesc *planes) |
av_cold int | ff_ivi_init_planes (IVIPlaneDesc *planes, const IVIPicConfig *cfg, int is_indeo4) |
Initialize planes (prepares descriptors, allocates buffers etc). More... | |
static int | ivi_init_tiles (IVIBandDesc *band, IVITile *ref_tile, int p, int b, int t_height, int t_width) |
av_cold int | ff_ivi_init_tiles (IVIPlaneDesc *planes, int tile_width, int tile_height) |
Initialize tile and macroblock descriptors. More... | |
static int | ivi_dec_tile_data_size (GetBitContext *gb) |
static int | ivi_dc_transform (IVIBandDesc *band, int *prev_dc, int buf_offs, int blk_size) |
static int | ivi_decode_coded_blocks (GetBitContext *gb, IVIBandDesc *band, ivi_mc_func mc, ivi_mc_avg_func mc_avg, int mv_x, int mv_y, int mv_x2, int mv_y2, int *prev_dc, int is_intra, int mc_type, int mc_type2, uint32_t quant, int offs, AVCodecContext *avctx) |
static int | ivi_decode_blocks (GetBitContext *gb, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx) |
static int | ivi_process_empty_tile (AVCodecContext *avctx, IVIBandDesc *band, IVITile *tile, int32_t mv_scale) |
Handle empty tiles by performing data copying and motion compensation respectively. More... | |
static void | ivi_output_plane (IVIPlaneDesc *plane, uint8_t *dst, int dst_pitch) |
static int | decode_band (IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx) |
Decode an Indeo 4 or 5 band. More... | |
int | ff_ivi_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt) |
av_cold int | ff_ivi_decode_close (AVCodecContext *avctx) |
Close Indeo5 decoder and clean up its context. More... | |
Variables | |
static const IVIHuffDesc | ivi_mb_huff_desc [8] |
These are 2x8 predefined Huffman codebooks for coding macroblock/block signals. More... | |
static const IVIHuffDesc | ivi_blk_huff_desc [8] |
static block huffman tables More... | |
static VLC | ivi_mb_vlc_tabs [8] |
static macroblock Huffman tables More... | |
static VLC | ivi_blk_vlc_tabs [8] |
static block Huffman tables More... | |
const uint8_t | ff_ivi_vertical_scan_8x8 [64] |
Scan patterns shared between indeo4 and indeo5. More... | |
const uint8_t | ff_ivi_horizontal_scan_8x8 [64] |
const uint8_t | ff_ivi_direct_scan_4x4 [16] |
const RVMapDesc | ff_ivi_rvmap_tabs [9] |
Run-value (RLE) tables. More... | |
This file contains functions and data shared by both Indeo4 and Indeo5 decoders.
Definition in file ivi_common.c.
#define BITSTREAM_READER_LE |
Definition at line 31 of file ivi_common.c.
typedef void(* ivi_mc_func)(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type) |
Definition at line 75 of file ivi_common.c.
typedef void(* ivi_mc_avg_func)(int16_t *buf, const int16_t *ref_buf1, const int16_t *ref_buf2, uint32_t pitch, int mc_type, int mc_type2) |
Definition at line 77 of file ivi_common.c.
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Definition at line 81 of file ivi_common.c.
Referenced by ivi_decode_blocks(), ivi_decode_coded_blocks(), and ivi_process_empty_tile().
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Reverse "nbits" bits of the value "val" and return the result in the least significant bits.
Definition at line 125 of file ivi_common.c.
Referenced by ivi_create_huff_from_desc().
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Definition at line 147 of file ivi_common.c.
Referenced by ff_ivi_dec_huff_desc(), and ff_ivi_init_static_vlc().
Initialize static codes used for macroblock and block decoding.
Definition at line 181 of file ivi_common.c.
Referenced by decode_init().
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Definition at line 208 of file ivi_common.c.
Referenced by ff_ivi_dec_huff_desc().
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Definition at line 221 of file ivi_common.c.
Referenced by ff_ivi_dec_huff_desc().
int ff_ivi_dec_huff_desc | ( | GetBitContext * | gb, |
int | desc_coded, | ||
int | which_tab, | ||
IVIHuffTab * | huff_tab, | ||
AVCodecContext * | avctx | ||
) |
Decode a huffman codebook descriptor from the bitstream and select specified huffman table.
[in,out] | gb | the GetBit context |
[in] | desc_coded | flag signalling if table descriptor was coded |
[in] | which_tab | codebook purpose (IVI_MB_HUFF or IVI_BLK_HUFF) |
[out] | huff_tab | pointer to the descriptor of the selected table |
[in] | avctx | AVCodecContext pointer |
Definition at line 228 of file ivi_common.c.
Referenced by decode_band_hdr(), and decode_pic_hdr().
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Definition at line 284 of file ivi_common.c.
Referenced by ff_ivi_decode_close(), and ff_ivi_init_planes().
av_cold int ff_ivi_init_planes | ( | IVIPlaneDesc * | planes, |
const IVIPicConfig * | cfg, | ||
int | is_indeo4 | ||
) |
Initialize planes (prepares descriptors, allocates buffers etc).
[in,out] | planes | pointer to the array of the plane descriptors |
[in] | cfg | pointer to the ivi_pic_config structure describing picture layout |
[in] | is_indeo4 | flag signalling if it is Indeo 4 or not |
Definition at line 306 of file ivi_common.c.
Referenced by decode_gop_header(), decode_init(), and decode_pic_hdr().
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Definition at line 382 of file ivi_common.c.
Referenced by ff_ivi_init_tiles().
av_cold int ff_ivi_init_tiles | ( | IVIPlaneDesc * | planes, |
int | tile_width, | ||
int | tile_height | ||
) |
Initialize tile and macroblock descriptors.
[in,out] | planes | pointer to the array of the plane descriptors |
[in] | tile_width | tile width |
[in] | tile_height | tile height |
Definition at line 419 of file ivi_common.c.
Referenced by decode_gop_header(), and decode_pic_hdr().
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Definition at line 467 of file ivi_common.c.
Referenced by decode_band().
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Definition at line 484 of file ivi_common.c.
Referenced by ivi_decode_blocks().
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Definition at line 503 of file ivi_common.c.
Referenced by ivi_decode_blocks().
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Definition at line 609 of file ivi_common.c.
Referenced by decode_band().
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Handle empty tiles by performing data copying and motion compensation respectively.
[in] | avctx | ptr to the AVCodecContext |
[in] | band | pointer to the band descriptor |
[in] | tile | pointer to the tile descriptor |
[in] | mv_scale | scaling factor for motion vectors |
Definition at line 756 of file ivi_common.c.
Referenced by decode_band().
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Definition at line 885 of file ivi_common.c.
Referenced by ff_ivi_decode_frame().
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Decode an Indeo 4 or 5 band.
[in,out] | ctx | ptr to the decoder context |
[in,out] | band | ptr to the band descriptor |
[in] | avctx | ptr to the AVCodecContext |
Definition at line 910 of file ivi_common.c.
Referenced by ff_ivi_decode_frame().
int ff_ivi_decode_frame | ( | AVCodecContext * | avctx, |
void * | data, | ||
int * | got_frame, | ||
AVPacket * | avpkt | ||
) |
Definition at line 1024 of file ivi_common.c.
Referenced by ff_ivi_decode_frame().
av_cold int ff_ivi_decode_close | ( | AVCodecContext * | avctx | ) |
Close Indeo5 decoder and clean up its context.
Definition at line 1143 of file ivi_common.c.
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These are 2x8 predefined Huffman codebooks for coding macroblock/block signals.
They are specified using "huffman descriptors" in order to avoid huge static tables. The decoding tables will be generated at startup from these descriptors.static macroblock huffman tables
Definition at line 49 of file ivi_common.c.
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static block huffman tables
Definition at line 61 of file ivi_common.c.
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static macroblock Huffman tables
Definition at line 72 of file ivi_common.c.
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static block Huffman tables
Definition at line 73 of file ivi_common.c.
const uint8_t ff_ivi_vertical_scan_8x8[64] |
Scan patterns shared between indeo4 and indeo5.
Common scan patterns (defined in ivi_common.c)
Definition at line 1178 of file ivi_common.c.
Referenced by decode_gop_header().
const uint8_t ff_ivi_horizontal_scan_8x8[64] |
Definition at line 1189 of file ivi_common.c.
Referenced by decode_gop_header().
const uint8_t ff_ivi_direct_scan_4x4[16] |
Definition at line 1200 of file ivi_common.c.
Referenced by decode_gop_header().
const RVMapDesc ff_ivi_rvmap_tabs[9] |