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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 {
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
65  /// or "7" for custom one
66  VLC *tab; /// pointer to the table associated with tab_sel
67 
68  /// the following are used only when tab_sel == 7
69  IVIHuffDesc cust_desc; /// custom Huffman codebook descriptor
70  VLC cust_tab; /// vlc table for custom codebook
71 } IVIHuffTab;
72 
73 enum {
74  IVI_MB_HUFF = 0, /// Huffman table is used for coding macroblocks
75  IVI_BLK_HUFF = 1 /// Huffman table is used for coding blocks
76 };
77 
78 
79 /**
80  * Common scan patterns (defined in ivi_common.c)
81  */
82 extern const uint8_t ff_ivi_vertical_scan_8x8[64];
83 extern const uint8_t ff_ivi_horizontal_scan_8x8[64];
84 extern const uint8_t ff_ivi_direct_scan_4x4[16];
85 
86 
87 /**
88  * Declare inverse transform function types
89  */
90 typedef void (InvTransformPtr)(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags);
91 typedef void (DCTransformPtr) (const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size);
92 
93 
94 /**
95  * run-value (RLE) table descriptor
96  */
97 typedef struct RVMapDesc {
98  uint8_t eob_sym; ///< end of block symbol
99  uint8_t esc_sym; ///< escape symbol
101  int8_t valtab[256];
102 } RVMapDesc;
103 
104 extern const RVMapDesc ff_ivi_rvmap_tabs[9];
105 
106 
107 /**
108  * information for Indeo macroblock (16x16, 8x8 or 4x4)
109  */
110 typedef struct IVIMbInfo {
111  int16_t xpos;
112  int16_t ypos;
113  uint32_t buf_offs; ///< address in the output buffer for this mb
114  uint8_t type; ///< macroblock type: 0 - INTRA, 1 - INTER
115  uint8_t cbp; ///< coded block pattern
116  int8_t q_delta; ///< quant delta
117  int8_t mv_x; ///< motion vector (x component)
118  int8_t mv_y; ///< motion vector (y component)
119  int8_t b_mv_x; ///< second motion vector (x component)
120  int8_t b_mv_y; ///< second motion vector (y component)
121 } IVIMbInfo;
122 
123 
124 /**
125  * information for Indeo tile
126  */
127 typedef struct IVITile {
128  int xpos;
129  int ypos;
130  int width;
131  int height;
132  int mb_size;
133  int is_empty; ///< = 1 if this tile doesn't contain any data
134  int data_size; ///< size of the data in bytes
135  int num_MBs; ///< number of macroblocks in this tile
136  IVIMbInfo *mbs; ///< array of macroblock descriptors
137  IVIMbInfo *ref_mbs; ///< ptr to the macroblock descriptors of the reference tile
138 } IVITile;
139 
140 
141 /**
142  * information for Indeo wavelet band
143  */
144 typedef struct IVIBandDesc {
145  int plane; ///< plane number this band belongs to
146  int band_num; ///< band number
147  int width;
148  int height;
149  int aheight; ///< aligned band height
150  const uint8_t *data_ptr; ///< ptr to the first byte of the band data
151  int data_size; ///< size of the band data
152  int16_t *buf; ///< pointer to the output buffer for this band
153  int16_t *ref_buf; ///< pointer to the reference frame buffer (for motion compensation)
154  int16_t *b_ref_buf; ///< pointer to the second reference frame buffer (for motion compensation)
155  int16_t *bufs[4]; ///< array of pointers to the band buffers
156  ptrdiff_t pitch; ///< pitch associated with the buffers above
157  int is_empty; ///< = 1 if this band doesn't contain any data
158  int mb_size; ///< macroblock size
159  int blk_size; ///< block size
160  int is_halfpel; ///< precision of the motion compensation: 0 - fullpel, 1 - halfpel
161  int inherit_mv; ///< tells if motion vector is inherited from reference macroblock
162  int inherit_qdelta; ///< tells if quantiser delta is inherited from reference macroblock
163  int qdelta_present; ///< tells if Qdelta signal is present in the bitstream (Indeo5 only)
164  int quant_mat; ///< dequant matrix index
165  int glob_quant; ///< quant base for this band
166  const uint8_t *scan; ///< ptr to the scan pattern
167  int scan_size; ///< size of the scantable
168 
169  IVIHuffTab blk_vlc; ///< vlc table for decoding block data
170 
171  int num_corr; ///< number of correction entries
172  uint8_t corr[61*2]; ///< rvmap correction pairs
173  int rvmap_sel; ///< rvmap table selector
174  RVMapDesc *rv_map; ///< ptr to the RLE table for this band
175  int num_tiles; ///< number of tiles in this band
176  IVITile *tiles; ///< array of tile descriptors
180  int is_2d_trans; ///< 1 indicates that the two-dimensional inverse transform is used
181  int32_t checksum; ///< for debug purposes
183  int bufsize; ///< band buffer size in bytes
184  const uint16_t *intra_base; ///< quantization matrix for intra blocks
185  const uint16_t *inter_base; ///< quantization matrix for inter blocks
186  const uint8_t *intra_scale; ///< quantization coefficient for intra blocks
187  const uint8_t *inter_scale; ///< quantization coefficient for inter blocks
188 } IVIBandDesc;
189 
190 
191 /**
192  * color plane (luma or chroma) information
193  */
194 typedef struct IVIPlaneDesc {
195  uint16_t width;
196  uint16_t height;
197  uint8_t num_bands; ///< number of bands this plane subdivided into
198  IVIBandDesc *bands; ///< array of band descriptors
199 } IVIPlaneDesc;
200 
201 
202 typedef struct IVIPicConfig {
203  uint16_t pic_width;
204  uint16_t pic_height;
205  uint16_t chroma_width;
206  uint16_t chroma_height;
207  uint16_t tile_width;
208  uint16_t tile_height;
211 } IVIPicConfig;
212 
213 typedef struct IVI45DecContext {
215  RVMapDesc rvmap_tabs[9]; ///< local corrected copy of the static rvmap tables
216 
217  uint32_t frame_num;
219  int prev_frame_type; ///< frame type of the previous frame
220  uint32_t data_size; ///< size of the frame data in bytes from picture header
222  const uint8_t *frame_data; ///< input frame data pointer
223  int inter_scal; ///< signals a sequence of scalable inter frames
224  uint32_t frame_size; ///< frame size in bytes
225  uint32_t pic_hdr_size; ///< picture header size in bytes
227  uint16_t checksum; ///< frame checksum
228 
230  IVIPlaneDesc planes[3]; ///< color planes
231 
232  int buf_switch; ///< used to switch between three buffers
233  int dst_buf; ///< buffer index for the currently decoded frame
234  int ref_buf; ///< inter frame reference buffer index
235  int ref2_buf; ///< temporal storage for switching buffers
236  int b_ref_buf; ///< second reference frame buffer index
237 
238  IVIHuffTab mb_vlc; ///< current macroblock table descriptor
239  IVIHuffTab blk_vlc; ///< current block table descriptor
240 
243  uint8_t in_q; ///< flag for explicitly stored quantiser delta
246 
247  uint16_t gop_hdr_size;
249  uint32_t lock_word;
250 
253  uint8_t has_transp; ///< transparency mode status: 1 - enabled
257 
263 
265  int buf_invalid[4];
266 
268 
272 
273 /** compare some properties of two pictures */
274 static inline int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
275 {
276  return str1->pic_width != str2->pic_width || str1->pic_height != str2->pic_height ||
277  str1->chroma_width != str2->chroma_width || str1->chroma_height != str2->chroma_height ||
278  str1->tile_width != str2->tile_width || str1->tile_height != str2->tile_height ||
279  str1->luma_bands != str2->luma_bands || str1->chroma_bands != str2->chroma_bands;
280 }
281 
282 /** calculate number of tiles in a stride */
283 #define IVI_NUM_TILES(stride, tile_size) (((stride) + (tile_size) - 1) / (tile_size))
284 
285 /** calculate number of macroblocks in a tile */
286 #define IVI_MBs_PER_TILE(tile_width, tile_height, mb_size) \
287  ((((tile_width) + (mb_size) - 1) / (mb_size)) * (((tile_height) + (mb_size) - 1) / (mb_size)))
288 
289 /** convert unsigned values into signed ones (the sign is in the LSB) */
290 #define IVI_TOSIGNED(val) (-(((val) >> 1) ^ -((val) & 1)))
291 
292 /** scale motion vector */
293 static inline int ivi_scale_mv(int mv, int mv_scale)
294 {
295  return (mv + (mv > 0) + (mv_scale - 1)) >> mv_scale;
296 }
297 
298 /**
299  * Initialize static codes used for macroblock and block decoding.
300  */
301 void ff_ivi_init_static_vlc(void);
302 
303 /**
304  * Decode a huffman codebook descriptor from the bitstream
305  * and select specified huffman table.
306  *
307  * @param[in,out] gb the GetBit context
308  * @param[in] desc_coded flag signalling if table descriptor was coded
309  * @param[in] which_tab codebook purpose (IVI_MB_HUFF or IVI_BLK_HUFF)
310  * @param[out] huff_tab pointer to the descriptor of the selected table
311  * @param[in] avctx AVCodecContext pointer
312  * @return zero on success, negative value otherwise
313  */
314 int ff_ivi_dec_huff_desc(GetBitContext *gb, int desc_coded, int which_tab,
315  IVIHuffTab *huff_tab, AVCodecContext *avctx);
316 
317 /**
318  * Initialize planes (prepares descriptors, allocates buffers etc).
319  *
320  * @param[in,out] planes pointer to the array of the plane descriptors
321  * @param[in] cfg pointer to the ivi_pic_config structure describing picture layout
322  * @param[in] is_indeo4 flag signalling if it is Indeo 4 or not
323  * @return result code: 0 - OK
324  */
326  const IVIPicConfig *cfg, int is_indeo4);
327 
328 /**
329  * Initialize tile and macroblock descriptors.
330  *
331  * @param[in,out] planes pointer to the array of the plane descriptors
332  * @param[in] tile_width tile width
333  * @param[in] tile_height tile height
334  * @return result code: 0 - OK
335  */
336 int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height);
337 
338 int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
339  AVPacket *avpkt);
341 
342 #endif /* AVCODEC_IVI_H */
int is_empty
= 1 if this band doesn't contain any data
Definition: ivi.h:157
uint32_t data_size
size of the frame data in bytes from picture header
Definition: ivi.h:220
uint8_t type
macroblock type: 0 - INTRA, 1 - INTER
Definition: ivi.h:114
int num_MBs
number of macroblocks in this tile
Definition: ivi.h:135
const uint8_t ff_ivi_direct_scan_4x4[16]
Definition: ivi.c:1243
static av_always_inline void mv_scale(Mv *dst, Mv *src, int td, int tb)
Definition: hevc_mvs.c:115
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
macroblock/block huffman table descriptor
Definition: ivi.h:63
InvTransformPtr * inv_transform
Definition: ivi.h:177
empty frame with no data
Definition: ivi.h:45
int(* decode_pic_hdr)(struct IVI45DecContext *ctx, AVCodecContext *avctx)
Definition: ivi.h:258
int inter_scal
signals a sequence of scalable inter frames
Definition: ivi.h:223
int8_t b_mv_y
second motion vector (y component)
Definition: ivi.h:120
int(* decode_mb_info)(struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Definition: ivi.h:260
int num_tiles
number of tiles in this band
Definition: ivi.h:175
int dst_buf
buffer index for the currently decoded frame
Definition: ivi.h:233
int16_t * ref_buf
pointer to the reference frame buffer (for motion compensation)
Definition: ivi.h:153
uint8_t eob_sym
end of block symbol
Definition: ivi.h:98
int16_t * buf
pointer to the output buffer for this band
Definition: ivi.h:152
IVITile * tiles
array of tile descriptors
Definition: ivi.h:176
int is_halfpel
precision of the motion compensation: 0 - fullpel, 1 - halfpel
Definition: ivi.h:160
uint8_t chroma_bands
Definition: ivi.h:210
int plane
plane number this band belongs to
Definition: ivi.h:145
int mb_size
Definition: ivi.h:132
int bufsize
band buffer size in bytes
Definition: ivi.h:183
IVIPicConfig pic_conf
Definition: ivi.h:229
int quant_mat
dequant matrix index
Definition: ivi.h:164
uint16_t height
Definition: ivi.h:196
uint8_t has_b_frames
Definition: ivi.h:252
int height
Definition: ivi.h:148
RVMapDesc * rv_map
ptr to the RLE table for this band
Definition: ivi.h:174
uint8_t xbits[16]
Definition: ivi.h:57
void( DCTransformPtr)(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
Definition: ivi.h:91
int8_t b_mv_x
second motion vector (x component)
Definition: ivi.h:119
uint8_t uses_tiling
Definition: ivi.h:254
uint8_t luma_bands
Definition: ivi.h:209
ptrdiff_t pitch
pitch associated with the buffers above
Definition: ivi.h:156
VLC * tab
index of one of the predefined tables or "7" for custom one
Definition: ivi.h:66
uint8_t
uint8_t pic_glob_quant
Definition: ivi.h:244
const uint8_t * frame_data
input frame data pointer
Definition: ivi.h:222
bidirectional frame
Definition: ivi.h:43
const uint16_t * inter_base
quantization matrix for inter blocks
Definition: ivi.h:185
const uint8_t * data_ptr
ptr to the first byte of the band data
Definition: ivi.h:150
uint16_t pic_height
Definition: ivi.h:204
int inherit_mv
tells if motion vector is inherited from reference macroblock
Definition: ivi.h:161
uint16_t tile_height
Definition: ivi.h:208
int16_t * bufs[4]
array of pointers to the band buffers
Definition: ivi.h:155
GetBitContext gb
Definition: ivi.h:214
uint16_t chroma_width
Definition: ivi.h:205
uint8_t cbp
coded block pattern
Definition: ivi.h:115
int qdelta_present
tells if Qdelta signal is present in the bitstream (Indeo5 only)
Definition: ivi.h:163
static int flags
Definition: log.c:57
uint16_t checksum
frame checksum
Definition: ivi.h:227
bitstream reader API header.
uint32_t pic_hdr_size
picture header size in bytes
Definition: ivi.h:225
uint16_t pic_width
Definition: ivi.h:203
int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height)
Initialize tile and macroblock descriptors.
Definition: ivi.c:421
int gop_invalid
Definition: ivi.h:264
IVIPlaneDesc planes[3]
color planes
Definition: ivi.h:230
const uint16_t * intra_base
quantization matrix for intra blocks
Definition: ivi.h:184
int width
Definition: ivi.h:147
int data_size
size of the band data
Definition: ivi.h:151
int got_p_frame
Definition: ivi.h:270
uint8_t unknown1
Definition: ivi.h:245
IVIHuffDesc cust_desc
pointer to the table associated with tab_sel
Definition: ivi.h:69
int blk_size
block size
Definition: ivi.h:159
empty frame with no data
Definition: ivi.h:46
uint8_t runtab[256]
Definition: ivi.h:100
uint8_t corr[61 *2]
rvmap correction pairs
Definition: ivi.h:172
const uint8_t ff_ivi_vertical_scan_8x8[64]
Common scan patterns (defined in ivi_common.c)
Definition: ivi.c:1221
int32_t tab_sel
Definition: ivi.h:64
RVMapDesc rvmap_tabs[9]
local corrected copy of the static rvmap tables
Definition: ivi.h:215
uint8_t in_q
flag for explicitly stored quantiser delta
Definition: ivi.h:243
intra frame with slightly different bitstream coding
Definition: ivi.h:41
int show_indeo4_info
Definition: ivi.h:251
int is_indeo4
Definition: ivi.h:267
int ref_buf
inter frame reference buffer index
Definition: ivi.h:234
DCTransformPtr * dc_transform
Definition: ivi.h:179
int32_t num_rows
Definition: ivi.h:56
void ff_ivi_init_static_vlc(void)
Initialize static codes used for macroblock and block decoding.
Definition: ivi.c:179
static int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
compare some properties of two pictures
Definition: ivi.h:274
droppable P-frame
Definition: ivi.h:44
uint8_t esc_sym
escape symbol
Definition: ivi.h:99
uint16_t width
Definition: ivi.h:195
Definition: vlc.h:26
run-value (RLE) table descriptor
Definition: ivi.h:97
int inherit_qdelta
tells if quantiser delta is inherited from reference macroblock
Definition: ivi.h:162
uint32_t frame_num
Definition: ivi.h:217
AVFrame * p_frame
Definition: ivi.h:269
uint8_t num_bands
number of bands this plane subdivided into
Definition: ivi.h:197
int(* decode_band_hdr)(struct IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Definition: ivi.h:259
int is_scalable
Definition: ivi.h:221
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
IVIMbInfo * mbs
array of macroblock descriptors
Definition: ivi.h:136
int32_t
AVFormatContext * ctx
Definition: movenc.c:48
int16_t * b_ref_buf
pointer to the second reference frame buffer (for motion compensation)
Definition: ivi.h:154
const uint8_t * inter_scale
quantization coefficient for inter blocks
Definition: ivi.h:187
uint16_t chroma_height
Definition: ivi.h:206
uint32_t lock_word
Definition: ivi.h:249
const uint8_t ff_ivi_horizontal_scan_8x8[64]
Definition: ivi.c:1232
int8_t q_delta
quant delta
Definition: ivi.h:116
uint32_t frame_size
frame size in bytes
Definition: ivi.h:224
static const int8_t mv[256][2]
Definition: 4xm.c:77
uint16_t tile_width
Definition: ivi.h:207
int ypos
Definition: ivi.h:129
IVIHuffTab mb_vlc
current macroblock table descriptor
Definition: ivi.h:238
int is_2d_trans
1 indicates that the two-dimensional inverse transform is used
Definition: ivi.h:180
Libavcodec external API header.
int glob_quant
quant base for this band
Definition: ivi.h:165
int height
Definition: ivi.h:131
main external API structure.
Definition: avcodec.h:1488
int aheight
aligned band height
Definition: ivi.h:149
int is_empty
= 1 if this tile doesn't contain any data
Definition: ivi.h:133
uint8_t frame_flags
Definition: ivi.h:226
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
int8_t valtab[256]
Definition: ivi.h:101
int num_corr
number of correction entries
Definition: ivi.h:171
static int ivi_scale_mv(int mv, int mv_scale)
scale motion vector
Definition: ivi.h:293
information for Indeo tile
Definition: ivi.h:127
int(* is_nonnull_frame)(struct IVI45DecContext *ctx)
Definition: ivi.h:262
int buf_switch
used to switch between three buffers
Definition: ivi.h:232
uint8_t in_imf
Definition: ivi.h:242
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:226
uint8_t gop_flags
Definition: ivi.h:248
uint8_t uses_haar
Definition: ivi.h:255
void(* switch_buffers)(struct IVI45DecContext *ctx)
Definition: ivi.h:261
IVIBandDesc * bands
array of band descriptors
Definition: ivi.h:198
void( InvTransformPtr)(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
Declare inverse transform function types.
Definition: ivi.h:90
int32_t checksum
for debug purposes
Definition: ivi.h:181
int rvmap_sel
rvmap table selector
Definition: ivi.h:173
int8_t mv_x
motion vector (x component)
Definition: ivi.h:117
int8_t mv_y
motion vector (y component)
Definition: ivi.h:118
int mb_size
macroblock size
Definition: ivi.h:158
huffman codebook descriptor
Definition: ivi.h:55
IVIMbInfo * ref_mbs
ptr to the macroblock descriptors of the reference tile
Definition: ivi.h:137
int xpos
Definition: ivi.h:128
non-droppable P-frame
Definition: ivi.h:42
IVIHuffTab blk_vlc
current block table descriptor
Definition: ivi.h:239
uint16_t gop_hdr_size
Definition: ivi.h:247
int16_t xpos
Definition: ivi.h:111
int band_num
band number
Definition: ivi.h:146
int
const RVMapDesc ff_ivi_rvmap_tabs[9]
Run-value (RLE) tables.
Definition: ivi.c:1251
int buf_invalid[4]
Definition: ivi.h:265
int transform_size
Definition: ivi.h:178
int ref2_buf
temporal storage for switching buffers
Definition: ivi.h:235
Huffman table is used for coding macroblocks.
Definition: ivi.h:75
VLC cust_tab
custom Huffman codebook descriptor
Definition: ivi.h:70
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:305
const uint8_t * scan
ptr to the scan pattern
Definition: ivi.h:166
int width
Definition: ivi.h:130
int checksum_present
Definition: ivi.h:182
uint8_t has_transp
transparency mode status: 1 - enabled
Definition: ivi.h:253
int16_t ypos
Definition: ivi.h:112
int prev_frame_type
frame type of the previous frame
Definition: ivi.h:219
information for Indeo macroblock (16x16, 8x8 or 4x4)
Definition: ivi.h:110
FILE * out
Definition: movenc.c:54
IVIHuffTab blk_vlc
vlc table for decoding block data
Definition: ivi.h:169
int scan_size
size of the scantable
Definition: ivi.h:167
const uint8_t * intra_scale
quantization coefficient for intra blocks
Definition: ivi.h:186
color plane (luma or chroma) information
Definition: ivi.h:194
uint8_t uses_fullpel
Definition: ivi.h:256
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ivi.c:1054
uint32_t buf_offs
address in the output buffer for this mb
Definition: ivi.h:113
int b_ref_buf
second reference frame buffer index
Definition: ivi.h:236
information for Indeo wavelet band
Definition: ivi.h:144
This structure stores compressed data.
Definition: avcodec.h:1377
int ff_ivi_decode_close(AVCodecContext *avctx)
Close Indeo5 decoder and clean up its context.
Definition: ivi.c:1200
uint8_t rvmap_sel
Definition: ivi.h:241
int frame_type
Definition: ivi.h:218
int data_size
size of the data in bytes
Definition: ivi.h:134