Libav
ivi.h
Go to the documentation of this file.
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 Libav.
7  *
8  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
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 
39 enum {
47 };
48 
49 #define IVI_VLC_BITS 13
50 #define IVI5_IS_PROTECTED 0x20
51 
55 typedef struct IVIHuffDesc {
58 } IVIHuffDesc;
59 
63 typedef struct IVIHuffTab {
65  VLC *tab;
67 
71 } IVIHuffTab;
72 
73 enum {
76 };
77 
78 
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 
90 typedef void (InvTransformPtr)(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags);
91 typedef void (DCTransformPtr) (const int32_t *in, int16_t *out, uint32_t pitch, int blk_size);
92 
93 
97 typedef struct RVMapDesc {
100  uint8_t runtab[256];
101  int8_t valtab[256];
102 } RVMapDesc;
103 
104 extern const RVMapDesc ff_ivi_rvmap_tabs[9];
105 
106 
110 typedef struct IVIMbInfo {
111  int16_t xpos;
112  int16_t ypos;
113  uint32_t buf_offs;
116  int8_t q_delta;
117  int8_t mv_x;
118  int8_t mv_y;
119  int8_t b_mv_x;
120  int8_t b_mv_y;
121 } IVIMbInfo;
122 
123 
127 typedef struct IVITile {
128  int xpos;
129  int ypos;
130  int width;
131  int height;
132  int mb_size;
133  int is_empty;
134  int data_size;
135  int num_MBs;
138 } IVITile;
139 
140 
144 typedef struct IVIBandDesc {
145  int plane;
146  int band_num;
147  int width;
148  int height;
149  int aheight;
150  const uint8_t *data_ptr;
151  int data_size;
152  int16_t *buf;
153  int16_t *ref_buf;
154  int16_t *b_ref_buf;
155  int16_t *bufs[4];
156  int pitch;
157  int is_empty;
158  int mb_size;
159  int blk_size;
164  int quant_mat;
166  const uint8_t *scan;
167 
169 
170  int num_corr;
171  uint8_t corr[61*2];
172  int rvmap_sel;
174  int num_tiles;
182  int bufsize;
183  const uint16_t *intra_base;
184  const uint16_t *inter_base;
187 } IVIBandDesc;
188 
189 
193 typedef struct IVIPlaneDesc {
194  uint16_t width;
195  uint16_t height;
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;
210 } IVIPicConfig;
211 
212 typedef struct IVI45DecContext {
214  RVMapDesc rvmap_tabs[9];
215 
216  uint32_t frame_num;
219  uint32_t data_size;
223  uint32_t frame_size;
224  uint32_t pic_hdr_size;
226  uint16_t checksum;
227 
229  IVIPlaneDesc planes[3];
230 
232  int dst_buf;
233  int ref_buf;
234  int ref2_buf;
235  int b_ref_buf;
236 
239 
245 
246  uint16_t gop_hdr_size;
248  uint32_t lock_word;
249 
256 
259  int (*decode_mb_info) (struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx);
262 
264 
266 
270 
272 static inline int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
273 {
274  return str1->pic_width != str2->pic_width || str1->pic_height != str2->pic_height ||
275  str1->chroma_width != str2->chroma_width || str1->chroma_height != str2->chroma_height ||
276  str1->tile_width != str2->tile_width || str1->tile_height != str2->tile_height ||
277  str1->luma_bands != str2->luma_bands || str1->chroma_bands != str2->chroma_bands;
278 }
279 
281 #define IVI_NUM_TILES(stride, tile_size) (((stride) + (tile_size) - 1) / (tile_size))
282 
284 #define IVI_MBs_PER_TILE(tile_width, tile_height, mb_size) \
285  ((((tile_width) + (mb_size) - 1) / (mb_size)) * (((tile_height) + (mb_size) - 1) / (mb_size)))
286 
288 #define IVI_TOSIGNED(val) (-(((val) >> 1) ^ -((val) & 1)))
289 
291 static inline int ivi_scale_mv(int mv, int mv_scale)
292 {
293  return (mv + (mv > 0) + (mv_scale - 1)) >> mv_scale;
294 }
295 
299 void ff_ivi_init_static_vlc(void);
300 
312 int ff_ivi_dec_huff_desc(GetBitContext *gb, int desc_coded, int which_tab,
313  IVIHuffTab *huff_tab, AVCodecContext *avctx);
314 
324  int is_indeo4);
325 
334 int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height);
335 
336 int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
337  AVPacket *avpkt);
339 
340 #endif /* AVCODEC_IVI_H */
int is_empty
= 1 if this band doesn&#39;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:219
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:1199
static av_always_inline void mv_scale(Mv *dst, Mv *src, int td, int tb)
Definition: hevc_mvs.c:140
This structure describes decoded (raw) audio or video data.
Definition: frame.h:140
macroblock/block huffman table descriptor
Definition: ivi.h:63
InvTransformPtr * inv_transform
Definition: ivi.h:176
static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
Decode Indeo 4 picture header.
Definition: indeo4.c:105
int inter_scal
signals a sequence of scalable inter frames
Definition: ivi.h:222
non-droppable P-frame
Definition: ivi.h:42
int8_t b_mv_y
second motion vector (y component)
Definition: ivi.h:120
int num_tiles
number of tiles in this band
Definition: ivi.h:174
int dst_buf
buffer index for the currently decoded frame
Definition: ivi.h:232
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:175
int is_halfpel
precision of the motion compensation: 0 - fullpel, 1 - halfpel
Definition: ivi.h:160
uint8_t chroma_bands
Definition: ivi.h:209
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:182
IVIPicConfig pic_conf
Definition: ivi.h:228
int quant_mat
dequant matrix index
Definition: ivi.h:164
uint16_t height
Definition: ivi.h:195
uint8_t has_b_frames
Definition: ivi.h:251
int height
Definition: ivi.h:148
RVMapDesc * rv_map
ptr to the RLE table for this band
Definition: ivi.h:173
uint8_t xbits[16]
Definition: ivi.h:57
int8_t b_mv_x
second motion vector (x component)
Definition: ivi.h:119
uint8_t uses_tiling
Definition: ivi.h:253
uint8_t luma_bands
Definition: ivi.h:208
uint8_t
uint8_t pic_glob_quant
Definition: ivi.h:243
const uint8_t * frame_data
input frame data pointer
Definition: ivi.h:221
const uint16_t * inter_base
quantization matrix for inter blocks
Definition: ivi.h:184
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:203
int inherit_mv
tells if motion vector is inherited from reference macroblock
Definition: ivi.h:161
static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Decode Indeo 4 band header.
Definition: indeo4.c:260
uint16_t tile_height
Definition: ivi.h:207
GetBitContext gb
Definition: ivi.h:213
const char data[16]
Definition: mxf.c:70
uint16_t chroma_width
Definition: ivi.h:204
int pitch
pitch associated with the buffers above
Definition: ivi.h:156
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:50
uint16_t checksum
frame checksum
Definition: ivi.h:226
bitstream reader API header.
uint32_t pic_hdr_size
picture header size in bytes
Definition: ivi.h:224
uint16_t pic_width
Definition: ivi.h:202
int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height)
Initialize tile and macroblock descriptors.
Definition: ivi.c:419
int gop_invalid
Definition: ivi.h:263
IVIPlaneDesc planes[3]
color planes
Definition: ivi.h:229
const uint16_t * intra_base
quantization matrix for intra blocks
Definition: ivi.h:183
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:268
uint8_t unknown1
Definition: ivi.h:244
IVIHuffDesc cust_desc
pointer to the table associated with tab_sel
Definition: ivi.h:69
int blk_size
block size
Definition: ivi.h:159
const uint8_t ff_ivi_vertical_scan_8x8[64]
Common scan patterns (defined in ivi_common.c)
Definition: ivi.c:1177
int32_t tab_sel
Definition: ivi.h:64
uint8_t in_q
flag for explicitly stored quantiser delta
Definition: ivi.h:242
int show_indeo4_info
Definition: ivi.h:250
int is_indeo4
Definition: ivi.h:265
int ref_buf
inter frame reference buffer index
Definition: ivi.h:233
DCTransformPtr * dc_transform
Definition: ivi.h:178
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:181
static int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
compare some properties of two pictures
Definition: ivi.h:272
uint8_t esc_sym
escape symbol
Definition: ivi.h:99
uint16_t width
Definition: ivi.h:194
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:216
AVFrame * p_frame
Definition: ivi.h:267
uint8_t num_bands
number of bands this plane subdivided into
Definition: ivi.h:196
void() InvTransformPtr(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
Declare inverse transform function types.
Definition: ivi.h:90
int is_scalable
Definition: ivi.h:220
void() DCTransformPtr(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
Definition: ivi.h:91
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
static void switch_buffers(IVI45DecContext *ctx)
Rearrange decoding and reference buffers.
Definition: indeo4.c:572
const uint8_t * inter_scale
quantization coefficient for inter blocks
Definition: ivi.h:186
uint16_t chroma_height
Definition: ivi.h:205
uint32_t lock_word
Definition: ivi.h:248
const uint8_t ff_ivi_horizontal_scan_8x8[64]
Definition: ivi.c:1188
int8_t q_delta
quant delta
Definition: ivi.h:116
uint32_t frame_size
frame size in bytes
Definition: ivi.h:223
empty frame with no data
Definition: ivi.h:45
static const int8_t mv[256][2]
Definition: 4xm.c:75
uint16_t tile_width
Definition: ivi.h:206
int ypos
Definition: ivi.h:129
IVIHuffTab mb_vlc
current macroblock table descriptor
Definition: ivi.h:237
int is_2d_trans
1 indicates that the two-dimensional inverse transform is used
Definition: ivi.h:179
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:1409
static void(WINAPI *cond_broadcast)(pthread_cond_t *cond)
intra frame with slightly different bitstream coding
Definition: ivi.h:41
int aheight
aligned band height
Definition: ivi.h:149
int is_empty
= 1 if this tile doesn&#39;t contain any data
Definition: ivi.h:133
uint8_t frame_flags
Definition: ivi.h:225
int num_corr
number of correction entries
Definition: ivi.h:170
static int ivi_scale_mv(int mv, int mv_scale)
scale motion vector
Definition: ivi.h:291
information for Indeo tile
Definition: ivi.h:127
int buf_switch
used to switch between three buffers
Definition: ivi.h:231
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;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);return NULL;} return ac;} 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;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->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);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
uint8_t in_imf
Definition: ivi.h:241
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:228
uint8_t gop_flags
Definition: ivi.h:247
uint8_t uses_haar
Definition: ivi.h:254
IVIBandDesc * bands
array of band descriptors
Definition: ivi.h:197
int32_t checksum
for debug purposes
Definition: ivi.h:180
int rvmap_sel
rvmap table selector
Definition: ivi.h:172
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
droppable P-frame
Definition: ivi.h:44
IVIHuffTab blk_vlc
current block table descriptor
Definition: ivi.h:238
uint16_t gop_hdr_size
Definition: ivi.h:246
int16_t xpos
Definition: ivi.h:111
int band_num
band number
Definition: ivi.h:146
const RVMapDesc ff_ivi_rvmap_tabs[9]
Run-value (RLE) tables.
Definition: ivi.c:1207
int transform_size
Definition: ivi.h:177
int ref2_buf
temporal storage for switching buffers
Definition: ivi.h:234
static int is_nonnull_frame(IVI45DecContext *ctx)
Definition: indeo4.c:601
VLC cust_tab
custom Huffman codebook descriptor
Definition: ivi.h:70
static int decode_mb_info(IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Decode information (block type, cbp, quant delta, motion vector) for all macroblocks in the current t...
Definition: indeo4.c:427
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:181
uint8_t has_transp
transparency mode status: 1 - enabled
Definition: ivi.h:252
static const struct twinvq_data tab
int16_t ypos
Definition: ivi.h:112
int prev_frame_type
frame type of the previous frame
Definition: ivi.h:218
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:168
const uint8_t * intra_scale
quantization coefficient for intra blocks
Definition: ivi.h:185
color plane (luma or chroma) information
Definition: ivi.h:193
uint8_t uses_fullpel
Definition: ivi.h:255
int ff_ivi_init_planes(IVIPlaneDesc *planes, const IVIPicConfig *cfg, int is_indeo4)
Initialize planes (prepares descriptors, allocates buffers etc).
Definition: ivi.c:306
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ivi.c:1024
Huffman table is used for coding macroblocks.
Definition: ivi.h:75
empty frame with no data
Definition: ivi.h:46
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:235
information for Indeo wavelet band
Definition: ivi.h:144
This structure stores compressed data.
Definition: avcodec.h:1323
int ff_ivi_decode_close(AVCodecContext *avctx)
Close Indeo5 decoder and clean up its context.
Definition: ivi.c:1159
bidirectional frame
Definition: ivi.h:43
uint8_t rvmap_sel
Definition: ivi.h:240
int frame_type
Definition: ivi.h:217
int data_size
size of the data in bytes
Definition: ivi.h:134