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Viewing changes to ffmpeg/libavcodec/xvmcvideo.c

  • Committer: Bazaar Package Importer
  • Author(s): Christian Marillat
  • Date: 2004-08-29 10:53:42 UTC
  • Revision ID: james.westby@ubuntu.com-20040829105342-qgmnry37eadfkoxx
Tags: upstream-1.1.3
Import upstream version 1.1.3

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ffmpeg/libavcodec/xvmcvideo.c
 
1
/*
 
2
 * XVideo Motion Compensation
 
3
 * Copyright (c) 2003 Ivan Kalvachev
 
4
 *
 
5
 * This library is free software; you can redistribute it and/or
 
6
 * modify it under the terms of the GNU Lesser General Public
 
7
 * License as published by the Free Software Foundation; either
 
8
 * version 2 of the License, or (at your option) any later version.
 
9
 *
 
10
 * This library is distributed in the hope that it will be useful,
 
11
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 
12
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
13
 * Lesser General Public License for more details.
 
14
 *
 
15
 * You should have received a copy of the GNU Lesser General Public
 
16
 * License along with this library; if not, write to the Free Software
 
17
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
18
 */
 
19
 
 
20
#include <limits.h>
 
21
 
 
22
//avcodec include
 
23
#include "avcodec.h"
 
24
#include "dsputil.h"
 
25
#include "mpegvideo.h"
 
26
 
 
27
#undef NDEBUG
 
28
#include <assert.h>
 
29
 
 
30
#ifdef USE_FASTMEMCPY
 
31
#include "fastmemcpy.h"
 
32
#endif
 
33
 
 
34
#ifdef HAVE_XVMC
 
35
 
 
36
//X11 includes are in the xvmc_render.h
 
37
//by replacing it with none-X one
 
38
//XvMC emulation could be performed
 
39
 
 
40
#include "xvmc_render.h"
 
41
 
 
42
//#include "xvmc_debug.h"
 
43
 
 
44
static int calc_cbp(MpegEncContext *s, int blocknum){
 
45
/* compute cbp */
 
46
// for I420 bit_offset=5
 
47
int  i,cbp = 0;
 
48
    for(i=0; i<blocknum; i++) {
 
49
        if(s->block_last_index[i] >= 0)
 
50
            cbp |= 1 << (5 - i);
 
51
    }
 
52
    return cbp;
 
53
}
 
54
 
 
55
 
 
56
 
 
57
//these functions should be called on every new field or/and frame
 
58
//They should be safe if they are called few times for same field!
 
59
int XVMC_field_start(MpegEncContext*s, AVCodecContext *avctx){
 
60
xvmc_render_state_t * render,* last, * next;
 
61
 
 
62
    assert(avctx != NULL);
 
63
 
 
64
    render = (xvmc_render_state_t*)s->current_picture.data[2];
 
65
    assert(render != NULL);
 
66
    if( (render == NULL) || (render->magic != MP_XVMC_RENDER_MAGIC) )
 
67
        return -1;//make sure that this is render packet
 
68
 
 
69
    render->picture_structure = s->picture_structure;
 
70
    render->flags = (s->first_field)? 0: XVMC_SECOND_FIELD;
 
71
 
 
72
//make sure that all data is drawn by XVMC_end_frame
 
73
    assert(render->filled_mv_blocks_num==0);
 
74
 
 
75
    render->p_future_surface = NULL;
 
76
    render->p_past_surface = NULL;
 
77
 
 
78
    switch(s->pict_type){
 
79
        case  I_TYPE:
 
80
            return 0;// no prediction from other frames
 
81
        case  B_TYPE:
 
82
            next = (xvmc_render_state_t*)s->next_picture.data[2];
 
83
            assert(next!=NULL);
 
84
            assert(next->state & MP_XVMC_STATE_PREDICTION);
 
85
            if(next == NULL) return -1;
 
86
            if(next->magic != MP_XVMC_RENDER_MAGIC) return -1;
 
87
            render->p_future_surface = next->p_surface;
 
88
            //no return here, going to set forward prediction
 
89
        case  P_TYPE:
 
90
            last = (xvmc_render_state_t*)s->last_picture.data[2];
 
91
            if(last == NULL)// && !s->first_field)
 
92
                last = render;//predict second field from the first
 
93
            if(last->magic != MP_XVMC_RENDER_MAGIC) return -1;
 
94
            assert(last->state & MP_XVMC_STATE_PREDICTION);
 
95
            render->p_past_surface = last->p_surface;
 
96
            return 0;
 
97
     }
 
98
 
 
99
return -1;
 
100
}
 
101
 
 
102
void XVMC_field_end(MpegEncContext *s){
 
103
xvmc_render_state_t * render;
 
104
    render = (xvmc_render_state_t*)s->current_picture.data[2];
 
105
    assert(render != NULL);
 
106
 
 
107
    if(render->filled_mv_blocks_num > 0){
 
108
//        printf("xvmcvideo.c: rendering %d left blocks after last slice!!!\n",render->filled_mv_blocks_num );
 
109
        ff_draw_horiz_band(s,0,0);
 
110
    }
 
111
}
 
112
 
 
113
void XVMC_decode_mb(MpegEncContext *s, DCTELEM block[6][64]){
 
114
XvMCMacroBlock * mv_block;
 
115
xvmc_render_state_t * render;
 
116
int i,cbp,blocks_per_mb;
 
117
 
 
118
const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
 
119
 
 
120
 
 
121
    if(s->encoding){
 
122
        fprintf(stderr,"XVMC doesn't support encoding!!!\n");
 
123
        assert(0);
 
124
        return;
 
125
    }
 
126
 
 
127
   //from MPV_decode_mb(),
 
128
    /* update DC predictors for P macroblocks */
 
129
    if (!s->mb_intra) {
 
130
        s->last_dc[0] =
 
131
        s->last_dc[1] =
 
132
        s->last_dc[2] =  128 << s->intra_dc_precision;
 
133
    }
 
134
 
 
135
   //MC doesn't skip blocks
 
136
    s->mb_skiped = 0;
 
137
 
 
138
 
 
139
   // do I need to export quant when I could not perform postprocessing?
 
140
   // anyway, it doesn't hurrt
 
141
    s->current_picture.qscale_table[mb_xy] = s->qscale;
 
142
 
 
143
//START OF XVMC specific code
 
144
    render = (xvmc_render_state_t*)s->current_picture.data[2];
 
145
    assert(render!=NULL);
 
146
    assert(render->magic==MP_XVMC_RENDER_MAGIC);
 
147
    assert(render->mv_blocks);
 
148
 
 
149
    //take the next free macroblock
 
150
    mv_block = &render->mv_blocks[render->start_mv_blocks_num + 
 
151
                                   render->filled_mv_blocks_num ];
 
152
 
 
153
// memset(mv_block,0,sizeof(XvMCMacroBlock));
 
154
 
 
155
    mv_block->x = s->mb_x;
 
156
    mv_block->y = s->mb_y;
 
157
    mv_block->dct_type = s->interlaced_dct;//XVMC_DCT_TYPE_FRAME/FIELD;
 
158
//    mv_block->motion_type = 0;  //zero to silense warnings
 
159
    if(s->mb_intra){
 
160
        mv_block->macroblock_type = XVMC_MB_TYPE_INTRA;//no MC, all done
 
161
    }else{
 
162
        mv_block->macroblock_type = XVMC_MB_TYPE_PATTERN;
 
163
 
 
164
        if(s->mv_dir & MV_DIR_FORWARD){
 
165
            mv_block->macroblock_type|= XVMC_MB_TYPE_MOTION_FORWARD;
 
166
            //pmv[n][dir][xy]=mv[dir][n][xy]
 
167
            mv_block->PMV[0][0][0] = s->mv[0][0][0];
 
168
            mv_block->PMV[0][0][1] = s->mv[0][0][1];
 
169
            mv_block->PMV[1][0][0] = s->mv[0][1][0];
 
170
            mv_block->PMV[1][0][1] = s->mv[0][1][1];
 
171
        }
 
172
        if(s->mv_dir & MV_DIR_BACKWARD){
 
173
            mv_block->macroblock_type|=XVMC_MB_TYPE_MOTION_BACKWARD;
 
174
            mv_block->PMV[0][1][0] = s->mv[1][0][0];
 
175
            mv_block->PMV[0][1][1] = s->mv[1][0][1];
 
176
            mv_block->PMV[1][1][0] = s->mv[1][1][0];
 
177
            mv_block->PMV[1][1][1] = s->mv[1][1][1];
 
178
        }
 
179
 
 
180
        switch(s->mv_type){
 
181
            case  MV_TYPE_16X16:
 
182
                mv_block->motion_type = XVMC_PREDICTION_FRAME;
 
183
                break;
 
184
            case  MV_TYPE_16X8:
 
185
                mv_block->motion_type = XVMC_PREDICTION_16x8;
 
186
                break;
 
187
            case  MV_TYPE_FIELD:
 
188
                mv_block->motion_type = XVMC_PREDICTION_FIELD;
 
189
                if(s->picture_structure == PICT_FRAME){
 
190
                    mv_block->PMV[0][0][1]<<=1;
 
191
                    mv_block->PMV[1][0][1]<<=1;
 
192
                    mv_block->PMV[0][1][1]<<=1;
 
193
                    mv_block->PMV[1][1][1]<<=1;
 
194
                }
 
195
                break;
 
196
            case  MV_TYPE_DMV:
 
197
                mv_block->motion_type = XVMC_PREDICTION_DUAL_PRIME;
 
198
                if(s->picture_structure == PICT_FRAME){
 
199
 
 
200
                    mv_block->PMV[0][0][0] = s->mv[0][0][0];//top from top
 
201
                    mv_block->PMV[0][0][1] = s->mv[0][0][1]<<1;
 
202
 
 
203
                    mv_block->PMV[0][1][0] = s->mv[0][0][0];//bottom from bottom
 
204
                    mv_block->PMV[0][1][1] = s->mv[0][0][1]<<1;
 
205
 
 
206
                    mv_block->PMV[1][0][0] = s->mv[0][2][0];//dmv00, top from bottom
 
207
                    mv_block->PMV[1][0][1] = s->mv[0][2][1]<<1;//dmv01
 
208
 
 
209
                    mv_block->PMV[1][1][0] = s->mv[0][3][0];//dmv10, bottom from top
 
210
                    mv_block->PMV[1][1][1] = s->mv[0][3][1]<<1;//dmv11
 
211
 
 
212
                }else{
 
213
                    mv_block->PMV[0][1][0] = s->mv[0][2][0];//dmv00
 
214
                    mv_block->PMV[0][1][1] = s->mv[0][2][1];//dmv01
 
215
                }
 
216
                break;
 
217
            default:
 
218
                assert(0);
 
219
        }
 
220
 
 
221
        mv_block->motion_vertical_field_select = 0;
 
222
 
 
223
//set correct field referenses
 
224
        if(s->mv_type == MV_TYPE_FIELD || s->mv_type == MV_TYPE_16X8){
 
225
            if( s->field_select[0][0] ) mv_block->motion_vertical_field_select|=1;
 
226
            if( s->field_select[1][0] ) mv_block->motion_vertical_field_select|=2;
 
227
            if( s->field_select[0][1] ) mv_block->motion_vertical_field_select|=4;
 
228
            if( s->field_select[1][1] ) mv_block->motion_vertical_field_select|=8;
 
229
        }
 
230
    }//!intra
 
231
//time to handle data blocks;
 
232
    mv_block->index = render->next_free_data_block_num;
 
233
    blocks_per_mb = 6;
 
234
/*
 
235
    switch( s->chroma_format){
 
236
        case CHROMA_422:
 
237
            blocks_per_mb = 8;
 
238
            break;
 
239
        case CHROMA_444:
 
240
            blocks_per_mb = 12;
 
241
            break;
 
242
    }
 
243
*/
 
244
    if(s->flags & CODEC_FLAG_GRAY){
 
245
        if(s->mb_intra){//intra frames are alwasy full chroma block
 
246
            memset(block[4],0,sizeof(short)*8*8);//so we need to clear them
 
247
            memset(block[5],0,sizeof(short)*8*8);
 
248
            if(!render->unsigned_intra)
 
249
                block[4][0] = block[5][0] = 1<<10;
 
250
        }
 
251
        else
 
252
            blocks_per_mb = 4;//Luminance blocks only
 
253
    };
 
254
    cbp = calc_cbp(s,blocks_per_mb);
 
255
    mv_block->coded_block_pattern = cbp;
 
256
    if(cbp == 0)
 
257
        mv_block->macroblock_type &= ~XVMC_MB_TYPE_PATTERN;
 
258
 
 
259
    for(i=0; i<blocks_per_mb; i++){
 
260
        if(s->block_last_index[i] >= 0){
 
261
            // i do not have unsigned_intra MOCO to test, hope it is OK
 
262
            if( (s->mb_intra) && ( render->idct || (!render->idct && !render->unsigned_intra)) )
 
263
                block[i][0]-=1<<10;
 
264
            if(!render->idct){
 
265
                s->dsp.idct(block[i]);
 
266
                //!!TODO!clip!!!
 
267
            }
 
268
//TODO:avoid block copy by modifying s->block pointer
 
269
            memcpy(&render->data_blocks[(render->next_free_data_block_num++)*64],
 
270
                    block[i],sizeof(short)*8*8);
 
271
        }
 
272
    }
 
273
    render->filled_mv_blocks_num++;
 
274
 
 
275
    assert(render->filled_mv_blocks_num <= render->total_number_of_mv_blocks);
 
276
    assert(render->next_free_data_block_num <= render->total_number_of_data_blocks);
 
277
 
 
278
 
 
279
    if(render->filled_mv_blocks_num >= render->total_number_of_mv_blocks)
 
280
        ff_draw_horiz_band(s,0,0);
 
281
 
 
282
// DumpRenderInfo(render);
 
283
// DumpMBlockInfo(mv_block);
 
284
 
 
285
}
 
286
 
 
287
#endif