FFmpeg
ivi.h
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1 /*
2  * common functions for Indeo Video Interactive codecs (Indeo4 and Indeo5)
3  *
4  * Copyright (c) 2009 Maxim Poliakovski
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * This file contains structures and macros shared by both Indeo4 and
26  * Indeo5 decoders.
27  */
28 
29 #ifndef AVCODEC_IVI_H
30 #define AVCODEC_IVI_H
31 
32 #include "avcodec.h"
33 #include "get_bits.h"
34 #include <stdint.h>
35 
36 /**
37  * Indeo 4 frame types.
38  */
39 enum {
41  IVI4_FRAMETYPE_INTRA1 = 1, ///< intra frame with slightly different bitstream coding
42  IVI4_FRAMETYPE_INTER = 2, ///< non-droppable P-frame
43  IVI4_FRAMETYPE_BIDIR = 3, ///< bidirectional frame
44  IVI4_FRAMETYPE_INTER_NOREF = 4, ///< droppable P-frame
45  IVI4_FRAMETYPE_NULL_FIRST = 5, ///< empty frame with no data
46  IVI4_FRAMETYPE_NULL_LAST = 6 ///< empty frame with no data
47 };
48 
49 #define IVI_VLC_BITS 13 ///< max number of bits of the ivi's huffman codes
50 #define IVI5_IS_PROTECTED 0x20
51 
52 /**
53  * huffman codebook descriptor
54  */
55 typedef struct IVIHuffDesc {
57  uint8_t xbits[16];
58 } IVIHuffDesc;
59 
60 /**
61  * macroblock/block huffman table descriptor
62  */
63 typedef struct IVIHuffTab {
64  int32_t tab_sel; ///< index of one of the predefined tables, or "7" for custom one
65  VLC *tab; ///< pointer to the table associated with tab_sel
66 
67  // the following are used only when tab_sel == 7
68  IVIHuffDesc cust_desc; ///< custom Huffman codebook descriptor
69  VLC cust_tab; ///< vlc table for custom codebook
70 } IVIHuffTab;
71 
72 enum {
73  IVI_MB_HUFF = 0, ///< Huffman table is used for coding macroblocks
74  IVI_BLK_HUFF = 1 ///< Huffman table is used for coding blocks
75 };
76 
77 
78 /**
79  * Common scan patterns (defined in ivi_common.c)
80  */
81 extern const uint8_t ff_ivi_vertical_scan_8x8[64];
82 extern const uint8_t ff_ivi_horizontal_scan_8x8[64];
83 extern const uint8_t ff_ivi_direct_scan_4x4[16];
84 
85 
86 /**
87  * Declare inverse transform function types
88  */
89 typedef void (InvTransformPtr)(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags);
90 typedef void (DCTransformPtr) (const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size);
91 
92 
93 /**
94  * run-value (RLE) table descriptor
95  */
96 typedef struct RVMapDesc {
97  uint8_t eob_sym; ///< end of block symbol
98  uint8_t esc_sym; ///< escape symbol
99  uint8_t runtab[256];
100  int8_t valtab[256];
101 } RVMapDesc;
102 
103 extern const RVMapDesc ff_ivi_rvmap_tabs[9];
104 
105 
106 /**
107  * information for Indeo macroblock (16x16, 8x8 or 4x4)
108  */
109 typedef struct IVIMbInfo {
110  int16_t xpos;
111  int16_t ypos;
112  uint32_t buf_offs; ///< address in the output buffer for this mb
113  uint8_t type; ///< macroblock type: 0 - INTRA, 1 - INTER
114  uint8_t cbp; ///< coded block pattern
115  int8_t q_delta; ///< quant delta
116  int8_t mv_x; ///< motion vector (x component)
117  int8_t mv_y; ///< motion vector (y component)
118  int8_t b_mv_x; ///< second motion vector (x component)
119  int8_t b_mv_y; ///< second motion vector (y component)
120 } IVIMbInfo;
121 
122 
123 /**
124  * information for Indeo tile
125  */
126 typedef struct IVITile {
127  int xpos;
128  int ypos;
129  int width;
130  int height;
131  int mb_size;
132  int is_empty; ///< = 1 if this tile doesn't contain any data
133  int data_size; ///< size of the data in bytes
134  int num_MBs; ///< number of macroblocks in this tile
135  IVIMbInfo *mbs; ///< array of macroblock descriptors
136  IVIMbInfo *ref_mbs; ///< ptr to the macroblock descriptors of the reference tile
137 } IVITile;
138 
139 
140 /**
141  * information for Indeo wavelet band
142  */
143 typedef struct IVIBandDesc {
144  int plane; ///< plane number this band belongs to
145  int band_num; ///< band number
146  int width;
147  int height;
148  int aheight; ///< aligned band height
149  const uint8_t *data_ptr; ///< ptr to the first byte of the band data
150  int data_size; ///< size of the band data
151  int16_t *buf; ///< pointer to the output buffer for this band
152  int16_t *ref_buf; ///< pointer to the reference frame buffer (for motion compensation)
153  int16_t *b_ref_buf; ///< pointer to the second reference frame buffer (for motion compensation)
154  int16_t *bufs[4]; ///< array of pointers to the band buffers
155  ptrdiff_t pitch; ///< pitch associated with the buffers above
156  int is_empty; ///< = 1 if this band doesn't contain any data
157  int mb_size; ///< macroblock size
158  int blk_size; ///< block size
159  int is_halfpel; ///< precision of the motion compensation: 0 - fullpel, 1 - halfpel
160  int inherit_mv; ///< tells if motion vector is inherited from reference macroblock
161  int inherit_qdelta; ///< tells if quantiser delta is inherited from reference macroblock
162  int qdelta_present; ///< tells if Qdelta signal is present in the bitstream (Indeo5 only)
163  int quant_mat; ///< dequant matrix index
164  int glob_quant; ///< quant base for this band
165  const uint8_t *scan; ///< ptr to the scan pattern
166  int scan_size; ///< size of the scantable
167 
168  IVIHuffTab blk_vlc; ///< vlc table for decoding block data
169 
170  int num_corr; ///< number of correction entries
171  uint8_t corr[61*2]; ///< rvmap correction pairs
172  int rvmap_sel; ///< rvmap table selector
173  RVMapDesc *rv_map; ///< ptr to the RLE table for this band
174  int num_tiles; ///< number of tiles in this band
175  IVITile *tiles; ///< array of tile descriptors
179  int is_2d_trans; ///< 1 indicates that the two-dimensional inverse transform is used
180  int32_t checksum; ///< for debug purposes
182  int bufsize; ///< band buffer size in bytes
183  const uint16_t *intra_base; ///< quantization matrix for intra blocks
184  const uint16_t *inter_base; ///< quantization matrix for inter blocks
185  const uint8_t *intra_scale; ///< quantization coefficient for intra blocks
186  const uint8_t *inter_scale; ///< quantization coefficient for inter blocks
187 } IVIBandDesc;
188 
189 
190 /**
191  * color plane (luma or chroma) information
192  */
193 typedef struct IVIPlaneDesc {
194  uint16_t width;
195  uint16_t height;
196  uint8_t num_bands; ///< number of bands this plane subdivided into
197  IVIBandDesc *bands; ///< array of band descriptors
198 } IVIPlaneDesc;
199 
200 
201 typedef struct IVIPicConfig {
202  uint16_t pic_width;
203  uint16_t pic_height;
204  uint16_t chroma_width;
205  uint16_t chroma_height;
206  uint16_t tile_width;
207  uint16_t tile_height;
208  uint8_t luma_bands;
209  uint8_t chroma_bands;
210 } IVIPicConfig;
211 
212 typedef struct IVI45DecContext {
214  RVMapDesc rvmap_tabs[9]; ///< local corrected copy of the static rvmap tables
215 
216  uint32_t frame_num;
218  int prev_frame_type; ///< frame type of the previous frame
219  uint32_t data_size; ///< size of the frame data in bytes from picture header
221  const uint8_t *frame_data; ///< input frame data pointer
222  int inter_scal; ///< signals a sequence of scalable inter frames
223  uint32_t frame_size; ///< frame size in bytes
224  uint32_t pic_hdr_size; ///< picture header size in bytes
225  uint8_t frame_flags;
226  uint16_t checksum; ///< frame checksum
227 
229  IVIPlaneDesc planes[3]; ///< color planes
230 
231  int buf_switch; ///< used to switch between three buffers
232  int dst_buf; ///< buffer index for the currently decoded frame
233  int ref_buf; ///< inter frame reference buffer index
234  int ref2_buf; ///< temporal storage for switching buffers
235  int b_ref_buf; ///< second reference frame buffer index
236 
237  IVIHuffTab mb_vlc; ///< current macroblock table descriptor
238  IVIHuffTab blk_vlc; ///< current block table descriptor
239 
240  uint8_t rvmap_sel;
241  uint8_t in_imf;
242  uint8_t in_q; ///< flag for explicitly stored quantiser delta
243  uint8_t pic_glob_quant;
244  uint8_t unknown1;
245 
246  uint16_t gop_hdr_size;
247  uint8_t gop_flags;
248  uint32_t lock_word;
249 
251  uint8_t has_b_frames;
252  uint8_t has_transp; ///< transparency mode status: 1 - enabled
253  uint8_t uses_tiling;
254  uint8_t uses_haar;
255  uint8_t uses_fullpel;
256 
260  void (*switch_buffers) (struct IVI45DecContext *ctx);
262 
264  int buf_invalid[4];
265 
267 
271 
272 /** compare some properties of two pictures */
273 static inline int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
274 {
275  return str1->pic_width != str2->pic_width || str1->pic_height != str2->pic_height ||
276  str1->chroma_width != str2->chroma_width || str1->chroma_height != str2->chroma_height ||
277  str1->tile_width != str2->tile_width || str1->tile_height != str2->tile_height ||
278  str1->luma_bands != str2->luma_bands || str1->chroma_bands != str2->chroma_bands;
279 }
280 
281 /** calculate number of tiles in a stride */
282 #define IVI_NUM_TILES(stride, tile_size) (((stride) + (tile_size) - 1) / (tile_size))
283 
284 /** calculate number of macroblocks in a tile */
285 #define IVI_MBs_PER_TILE(tile_width, tile_height, mb_size) \
286  ((((tile_width) + (mb_size) - 1) / (mb_size)) * (((tile_height) + (mb_size) - 1) / (mb_size)))
287 
288 /** convert unsigned values into signed ones (the sign is in the LSB) */
289 #define IVI_TOSIGNED(val) (-(((val) >> 1) ^ -((val) & 1)))
290 
291 /** scale motion vector */
292 static inline int ivi_scale_mv(int mv, int mv_scale)
293 {
294  return (mv + (mv > 0) + (mv_scale - 1)) >> mv_scale;
295 }
296 
297 /**
298  * Initialize static codes used for macroblock and block decoding.
299  */
300 void ff_ivi_init_static_vlc(void);
301 
302 /**
303  * Decode a huffman codebook descriptor from the bitstream
304  * and select specified huffman table.
305  *
306  * @param[in,out] gb the GetBit context
307  * @param[in] desc_coded flag signalling if table descriptor was coded
308  * @param[in] which_tab codebook purpose (IVI_MB_HUFF or IVI_BLK_HUFF)
309  * @param[out] huff_tab pointer to the descriptor of the selected table
310  * @param[in] avctx AVCodecContext pointer
311  * @return zero on success, negative value otherwise
312  */
313 int ff_ivi_dec_huff_desc(GetBitContext *gb, int desc_coded, int which_tab,
314  IVIHuffTab *huff_tab, AVCodecContext *avctx);
315 
316 /**
317  * Initialize planes (prepares descriptors, allocates buffers etc).
318  *
319  * @param[in,out] planes pointer to the array of the plane descriptors
320  * @param[in] cfg pointer to the ivi_pic_config structure describing picture layout
321  * @param[in] is_indeo4 flag signalling if it is Indeo 4 or not
322  * @return result code: 0 - OK
323  */
325  const IVIPicConfig *cfg, int is_indeo4);
326 
327 /**
328  * Initialize tile and macroblock descriptors.
329  *
330  * @param[in,out] planes pointer to the array of the plane descriptors
331  * @param[in] tile_width tile width
332  * @param[in] tile_height tile height
333  * @return result code: 0 - OK
334  */
335 int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height);
336 
338  int *got_frame, AVPacket *avpkt);
340 
341 #endif /* AVCODEC_IVI_H */
RVMapDesc::runtab
uint8_t runtab[256]
Definition: ivi.h:99
IVITile::height
int height
Definition: ivi.h:130
RVMapDesc::valtab
int8_t valtab[256]
Definition: ivi.h:100
IVI45DecContext::rvmap_tabs
RVMapDesc rvmap_tabs[9]
local corrected copy of the static rvmap tables
Definition: ivi.h:214
IVIHuffDesc::xbits
uint8_t xbits[16]
Definition: ivi.h:57
IVI45DecContext::is_indeo4
int is_indeo4
Definition: ivi.h:266
IVI45DecContext::checksum
uint16_t checksum
frame checksum
Definition: ivi.h:226
out
FILE * out
Definition: movenc.c:55
IVI45DecContext::pic_hdr_size
uint32_t pic_hdr_size
picture header size in bytes
Definition: ivi.h:224
IVIBandDesc::inter_scale
const uint8_t * inter_scale
quantization coefficient for inter blocks
Definition: ivi.h:186
ff_ivi_init_planes
int ff_ivi_init_planes(AVCodecContext *avctx, IVIPlaneDesc *planes, const IVIPicConfig *cfg, int is_indeo4)
Initialize planes (prepares descriptors, allocates buffers etc).
Definition: ivi.c:292
IVIPicConfig::pic_width
uint16_t pic_width
Definition: ivi.h:202
IVIBandDesc::height
int height
Definition: ivi.h:147
mv
static const int8_t mv[256][2]
Definition: 4xm.c:81
IVIHuffDesc
huffman codebook descriptor
Definition: ivi.h:55
IVI45DecContext::unknown1
uint8_t unknown1
Definition: ivi.h:244
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:374
IVIBandDesc::inv_transform
InvTransformPtr * inv_transform
Definition: ivi.h:176
IVI45DecContext::pic_glob_quant
uint8_t pic_glob_quant
Definition: ivi.h:243
ff_ivi_vertical_scan_8x8
const uint8_t ff_ivi_vertical_scan_8x8[64]
Common scan patterns (defined in ivi_common.c)
Definition: ivi.c:1233
data
const char data[16]
Definition: mxf.c:148
IVIMbInfo::cbp
uint8_t cbp
coded block pattern
Definition: ivi.h:114
RVMapDesc::eob_sym
uint8_t eob_sym
end of block symbol
Definition: ivi.h:97
IVIBandDesc::rvmap_sel
int rvmap_sel
rvmap table selector
Definition: ivi.h:172
IVIPlaneDesc::num_bands
uint8_t num_bands
number of bands this plane subdivided into
Definition: ivi.h:196
IVI45DecContext::has_b_frames
uint8_t has_b_frames
Definition: ivi.h:251
IVIBandDesc::dc_transform
DCTransformPtr * dc_transform
Definition: ivi.h:178
IVIHuffTab::tab
VLC * tab
pointer to the table associated with tab_sel
Definition: ivi.h:65
ivi_scale_mv
static int ivi_scale_mv(int mv, int mv_scale)
scale motion vector
Definition: ivi.h:292
IVI45DecContext::decode_pic_hdr
int(* decode_pic_hdr)(struct IVI45DecContext *ctx, AVCodecContext *avctx)
Definition: ivi.h:257
IVIMbInfo::type
uint8_t type
macroblock type: 0 - INTRA, 1 - INTER
Definition: ivi.h:113
IVITile::num_MBs
int num_MBs
number of macroblocks in this tile
Definition: ivi.h:134
IVIPicConfig::luma_bands
uint8_t luma_bands
Definition: ivi.h:208
DCTransformPtr
void() DCTransformPtr(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
Definition: ivi.h:90
IVIBandDesc::data_ptr
const uint8_t * data_ptr
ptr to the first byte of the band data
Definition: ivi.h:149
IVI45DecContext::inter_scal
int inter_scal
signals a sequence of scalable inter frames
Definition: ivi.h:222
IVI45DecContext::gop_invalid
int gop_invalid
Definition: ivi.h:263
IVI45DecContext::planes
IVIPlaneDesc planes[3]
color planes
Definition: ivi.h:229
IVITile::is_empty
int is_empty
= 1 if this tile doesn't contain any data
Definition: ivi.h:132
ivi_pic_config_cmp
static int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
compare some properties of two pictures
Definition: ivi.h:273
IVI45DecContext::got_p_frame
int got_p_frame
Definition: ivi.h:269
IVI45DecContext::has_transp
uint8_t has_transp
transparency mode status: 1 - enabled
Definition: ivi.h:252
IVIBandDesc::num_corr
int num_corr
number of correction entries
Definition: ivi.h:170
IVIBandDesc
information for Indeo wavelet band
Definition: ivi.h:143
IVIPlaneDesc::height
uint16_t height
Definition: ivi.h:195
GetBitContext
Definition: get_bits.h:108
IVIHuffTab
macroblock/block huffman table descriptor
Definition: ivi.h:63
IVI_BLK_HUFF
@ IVI_BLK_HUFF
Huffman table is used for coding blocks.
Definition: ivi.h:74
IVITile::width
int width
Definition: ivi.h:129
IVIBandDesc::tiles
IVITile * tiles
array of tile descriptors
Definition: ivi.h:175
IVIHuffDesc::num_rows
int32_t num_rows
Definition: ivi.h:56
IVIBandDesc::intra_base
const uint16_t * intra_base
quantization matrix for intra blocks
Definition: ivi.h:183
IVIMbInfo
information for Indeo macroblock (16x16, 8x8 or 4x4)
Definition: ivi.h:109
IVIHuffTab::tab_sel
int32_t tab_sel
index of one of the predefined tables, or "7" for custom one
Definition: ivi.h:64
IVI45DecContext::gb
GetBitContext gb
Definition: ivi.h:213
ff_ivi_rvmap_tabs
const RVMapDesc ff_ivi_rvmap_tabs[9]
Run-value (RLE) tables.
Definition: ivi.c:1263
IVITile::ypos
int ypos
Definition: ivi.h:128
IVIBandDesc::checksum_present
int checksum_present
Definition: ivi.h:181
IVIBandDesc::width
int width
Definition: ivi.h:146
IVI_MB_HUFF
@ IVI_MB_HUFF
Huffman table is used for coding macroblocks.
Definition: ivi.h:73
IVI45DecContext::p_frame
AVFrame * p_frame
Definition: ivi.h:268
IVIBandDesc::num_tiles
int num_tiles
number of tiles in this band
Definition: ivi.h:174
IVIMbInfo::ypos
int16_t ypos
Definition: ivi.h:111
IVIMbInfo::mv_x
int8_t mv_x
motion vector (x component)
Definition: ivi.h:116
IVIBandDesc::ref_buf
int16_t * ref_buf
pointer to the reference frame buffer (for motion compensation)
Definition: ivi.h:152
IVIPicConfig::chroma_bands
uint8_t chroma_bands
Definition: ivi.h:209
IVI4_FRAMETYPE_INTER
@ IVI4_FRAMETYPE_INTER
non-droppable P-frame
Definition: ivi.h:42
IVI45DecContext::frame_data
const uint8_t * frame_data
input frame data pointer
Definition: ivi.h:221
IVIPicConfig
Definition: ivi.h:201
IVI45DecContext::is_scalable
int is_scalable
Definition: ivi.h:220
ctx
AVFormatContext * ctx
Definition: movenc.c:49
get_bits.h
IVIBandDesc::scan
const uint8_t * scan
ptr to the scan pattern
Definition: ivi.h:165
IVITile::data_size
int data_size
size of the data in bytes
Definition: ivi.h:133
IVIBandDesc::inter_base
const uint16_t * inter_base
quantization matrix for inter blocks
Definition: ivi.h:184
IVIHuffTab::cust_desc
IVIHuffDesc cust_desc
custom Huffman codebook descriptor
Definition: ivi.h:68
IVI45DecContext::buf_switch
int buf_switch
used to switch between three buffers
Definition: ivi.h:231
IVIPlaneDesc
color plane (luma or chroma) information
Definition: ivi.h:193
IVI45DecContext::uses_haar
uint8_t uses_haar
Definition: ivi.h:254
IVI45DecContext::decode_band_hdr
int(* decode_band_hdr)(struct IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Definition: ivi.h:258
IVI45DecContext::dst_buf
int dst_buf
buffer index for the currently decoded frame
Definition: ivi.h:232
IVIBandDesc::data_size
int data_size
size of the band data
Definition: ivi.h:150
IVI45DecContext::ref2_buf
int ref2_buf
temporal storage for switching buffers
Definition: ivi.h:234
IVIBandDesc::inherit_mv
int inherit_mv
tells if motion vector is inherited from reference macroblock
Definition: ivi.h:160
IVIBandDesc::band_num
int band_num
band number
Definition: ivi.h:145
IVIPicConfig::pic_height
uint16_t pic_height
Definition: ivi.h:203
IVIBandDesc::aheight
int aheight
aligned band height
Definition: ivi.h:148
IVI45DecContext
Definition: ivi.h:212
IVIPicConfig::tile_height
uint16_t tile_height
Definition: ivi.h:207
mv_scale
static av_always_inline void mv_scale(Mv *dst, const Mv *src, int td, int tb)
Definition: hevc_mvs.c:116
IVIPicConfig::chroma_width
uint16_t chroma_width
Definition: ivi.h:204
IVI4_FRAMETYPE_NULL_LAST
@ IVI4_FRAMETYPE_NULL_LAST
empty frame with no data
Definition: ivi.h:46
IVIMbInfo::xpos
int16_t xpos
Definition: ivi.h:110
IVI4_FRAMETYPE_INTER_NOREF
@ IVI4_FRAMETYPE_INTER_NOREF
droppable P-frame
Definition: ivi.h:44
IVI4_FRAMETYPE_BIDIR
@ IVI4_FRAMETYPE_BIDIR
bidirectional frame
Definition: ivi.h:43
IVI45DecContext::ref_buf
int ref_buf
inter frame reference buffer index
Definition: ivi.h:233
IVI45DecContext::gop_flags
uint8_t gop_flags
Definition: ivi.h:247
IVI4_FRAMETYPE_INTRA1
@ IVI4_FRAMETYPE_INTRA1
intra frame with slightly different bitstream coding
Definition: ivi.h:41
IVIMbInfo::b_mv_x
int8_t b_mv_x
second motion vector (x component)
Definition: ivi.h:118
IVIPicConfig::tile_width
uint16_t tile_width
Definition: ivi.h:206
IVIBandDesc::checksum
int32_t checksum
for debug purposes
Definition: ivi.h:180
IVI45DecContext::uses_fullpel
uint8_t uses_fullpel
Definition: ivi.h:255
IVIPlaneDesc::width
uint16_t width
Definition: ivi.h:194
RVMapDesc
run-value (RLE) table descriptor
Definition: ivi.h:96
ff_ivi_horizontal_scan_8x8
const uint8_t ff_ivi_horizontal_scan_8x8[64]
Definition: ivi.c:1244
IVIBandDesc::plane
int plane
plane number this band belongs to
Definition: ivi.h:144
IVIBandDesc::transform_size
int transform_size
Definition: ivi.h:177
IVIBandDesc::mb_size
int mb_size
macroblock size
Definition: ivi.h:157
IVIBandDesc::bufs
int16_t * bufs[4]
array of pointers to the band buffers
Definition: ivi.h:154
ff_ivi_init_static_vlc
void ff_ivi_init_static_vlc(void)
Initialize static codes used for macroblock and block decoding.
Definition: ivi.c:179
IVI45DecContext::gop_hdr_size
uint16_t gop_hdr_size
Definition: ivi.h:246
IVITile
information for Indeo tile
Definition: ivi.h:126
IVI45DecContext::data_size
uint32_t data_size
size of the frame data in bytes from picture header
Definition: ivi.h:219
IVI45DecContext::in_q
uint8_t in_q
flag for explicitly stored quantiser delta
Definition: ivi.h:242
IVIBandDesc::scan_size
int scan_size
size of the scantable
Definition: ivi.h:166
IVI45DecContext::show_indeo4_info
int show_indeo4_info
Definition: ivi.h:250
IVIBandDesc::intra_scale
const uint8_t * intra_scale
quantization coefficient for intra blocks
Definition: ivi.h:185
IVITile::mbs
IVIMbInfo * mbs
array of macroblock descriptors
Definition: ivi.h:135
IVIBandDesc::bufsize
int bufsize
band buffer size in bytes
Definition: ivi.h:182
IVITile::mb_size
int mb_size
Definition: ivi.h:131
IVI45DecContext::frame_flags
uint8_t frame_flags
Definition: ivi.h:225
IVITile::ref_mbs
IVIMbInfo * ref_mbs
ptr to the macroblock descriptors of the reference tile
Definition: ivi.h:136
IVIBandDesc::buf
int16_t * buf
pointer to the output buffer for this band
Definition: ivi.h:151
RVMapDesc::esc_sym
uint8_t esc_sym
escape symbol
Definition: ivi.h:98
IVI4_FRAMETYPE_NULL_FIRST
@ IVI4_FRAMETYPE_NULL_FIRST
empty frame with no data
Definition: ivi.h:45
ff_ivi_init_tiles
int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height)
Initialize tile and macroblock descriptors.
Definition: ivi.c:396
IVIBandDesc::b_ref_buf
int16_t * b_ref_buf
pointer to the second reference frame buffer (for motion compensation)
Definition: ivi.h:153
IVIMbInfo::q_delta
int8_t q_delta
quant delta
Definition: ivi.h:115
IVIMbInfo::b_mv_y
int8_t b_mv_y
second motion vector (y component)
Definition: ivi.h:119
avcodec.h
ff_ivi_decode_frame
int ff_ivi_decode_frame(AVCodecContext *avctx, AVFrame *data, int *got_frame, AVPacket *avpkt)
Definition: ivi.c:1069
IVI45DecContext::frame_num
uint32_t frame_num
Definition: ivi.h:216
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.
Definition: ivi.c:211
IVIBandDesc::qdelta_present
int qdelta_present
tells if Qdelta signal is present in the bitstream (Indeo5 only)
Definition: ivi.h:162
IVIBandDesc::rv_map
RVMapDesc * rv_map
ptr to the RLE table for this band
Definition: ivi.h:173
IVIBandDesc::is_2d_trans
int is_2d_trans
1 indicates that the two-dimensional inverse transform is used
Definition: ivi.h:179
IVIPicConfig::chroma_height
uint16_t chroma_height
Definition: ivi.h:205
IVIMbInfo::buf_offs
uint32_t buf_offs
address in the output buffer for this mb
Definition: ivi.h:112
IVIBandDesc::is_empty
int is_empty
= 1 if this band doesn't contain any data
Definition: ivi.h:156
AVCodecContext
main external API structure.
Definition: avcodec.h:445
IVI45DecContext::blk_vlc
IVIHuffTab blk_vlc
current block table descriptor
Definition: ivi.h:238
IVI45DecContext::pic_conf
IVIPicConfig pic_conf
Definition: ivi.h:228
IVI45DecContext::in_imf
uint8_t in_imf
Definition: ivi.h:241
ff_ivi_direct_scan_4x4
const uint8_t ff_ivi_direct_scan_4x4[16]
Definition: ivi.c:1255
IVI45DecContext::switch_buffers
void(* switch_buffers)(struct IVI45DecContext *ctx)
Definition: ivi.h:260
VLC
Definition: vlc.h:36
IVIBandDesc::blk_size
int blk_size
block size
Definition: ivi.h:158
planes
static const struct @400 planes[]
IVIPlaneDesc::bands
IVIBandDesc * bands
array of band descriptors
Definition: ivi.h:197
IVI45DecContext::frame_size
uint32_t frame_size
frame size in bytes
Definition: ivi.h:223
IVIBandDesc::blk_vlc
IVIHuffTab blk_vlc
vlc table for decoding block data
Definition: ivi.h:168
IVI45DecContext::uses_tiling
uint8_t uses_tiling
Definition: ivi.h:253
IVI4_FRAMETYPE_INTRA
@ IVI4_FRAMETYPE_INTRA
Definition: ivi.h:40
IVI45DecContext::prev_frame_type
int prev_frame_type
frame type of the previous frame
Definition: ivi.h:218
IVI45DecContext::decode_mb_info
int(* decode_mb_info)(struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Definition: ivi.h:259
AVPacket
This structure stores compressed data.
Definition: packet.h:501
IVIBandDesc::inherit_qdelta
int inherit_qdelta
tells if quantiser delta is inherited from reference macroblock
Definition: ivi.h:161
IVIBandDesc::corr
uint8_t corr[61 *2]
rvmap correction pairs
Definition: ivi.h:171
int32_t
int32_t
Definition: audioconvert.c:56
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:474
IVITile::xpos
int xpos
Definition: ivi.h:127
IVIBandDesc::is_halfpel
int is_halfpel
precision of the motion compensation: 0 - fullpel, 1 - halfpel
Definition: ivi.h:159
IVI45DecContext::is_nonnull_frame
int(* is_nonnull_frame)(struct IVI45DecContext *ctx)
Definition: ivi.h:261
IVI45DecContext::buf_invalid
int buf_invalid[4]
Definition: ivi.h:264
IVI45DecContext::lock_word
uint32_t lock_word
Definition: ivi.h:248
IVIBandDesc::glob_quant
int glob_quant
quant base for this band
Definition: ivi.h:164
ff_ivi_decode_close
int ff_ivi_decode_close(AVCodecContext *avctx)
Close Indeo5 decoder and clean up its context.
Definition: ivi.c:1212
IVI45DecContext::frame_type
int frame_type
Definition: ivi.h:217
int
int
Definition: ffmpeg_filter.c:424
IVI45DecContext::rvmap_sel
uint8_t rvmap_sel
Definition: ivi.h:240
IVIBandDesc::quant_mat
int quant_mat
dequant matrix index
Definition: ivi.h:163
IVIBandDesc::pitch
ptrdiff_t pitch
pitch associated with the buffers above
Definition: ivi.h:155
IVI45DecContext::mb_vlc
IVIHuffTab mb_vlc
current macroblock table descriptor
Definition: ivi.h:237
IVI45DecContext::b_ref_buf
int b_ref_buf
second reference frame buffer index
Definition: ivi.h:235
InvTransformPtr
void() InvTransformPtr(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
Declare inverse transform function types.
Definition: ivi.h:89
IVIHuffTab::cust_tab
VLC cust_tab
vlc table for custom codebook
Definition: ivi.h:69
IVIMbInfo::mv_y
int8_t mv_y
motion vector (y component)
Definition: ivi.h:117