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  • Committer: Bazaar Package Importer
  • Author(s): Reinhard Tartler
  • Date: 2009-03-13 09:18:28 UTC
  • mfrom: (1.1.8 upstream)
  • Revision ID: james.westby@ubuntu.com-20090313091828-n4ktby5eca487uhv
Tags: 3:0.svn20090303-1ubuntu1+unstripped1
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libavcodec/xvmcvideo.c
1
 
/*
2
 
 * XVideo Motion Compensation
3
 
 * Copyright (c) 2003 Ivan Kalvachev
4
 
 *
5
 
 * This file is part of FFmpeg.
6
 
 *
7
 
 * FFmpeg is free software; you can redistribute it and/or
8
 
 * modify it under the terms of the GNU Lesser General Public
9
 
 * License as published by the Free Software Foundation; either
10
 
 * version 2.1 of the License, or (at your option) any later version.
11
 
 *
12
 
 * FFmpeg is distributed in the hope that it will be useful,
13
 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 
 * Lesser General Public License for more details.
16
 
 *
17
 
 * You should have received a copy of the GNU Lesser General Public
18
 
 * License along with FFmpeg; if not, write to the Free Software
19
 
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 
 */
21
 
 
22
 
#include <limits.h>
23
 
 
24
 
//avcodec include
25
 
#include "avcodec.h"
26
 
#include "dsputil.h"
27
 
#include "mpegvideo.h"
28
 
 
29
 
#undef NDEBUG
30
 
#include <assert.h>
31
 
 
32
 
//X11 includes are in xvmc_render.h
33
 
//by replacing it with non-X one
34
 
//XvMC emulation could be performed
35
 
 
36
 
#include "xvmc_render.h"
37
 
 
38
 
//#include "xvmc_debug.h"
39
 
 
40
 
//set s->block
41
 
void XVMC_init_block(MpegEncContext *s){
42
 
    struct xvmc_render_state * render;
43
 
    render = (struct xvmc_render_state*)s->current_picture.data[2];
44
 
    assert(render != NULL);
45
 
    if( (render == NULL) || (render->magic != MP_XVMC_RENDER_MAGIC) ){
46
 
        assert(0);
47
 
        return;//make sure that this is a render packet
48
 
    }
49
 
    s->block =(DCTELEM *)(render->data_blocks+(render->next_free_data_block_num)*64);
50
 
}
51
 
 
52
 
void XVMC_pack_pblocks(MpegEncContext *s, int cbp){
53
 
int i,j;
54
 
const int mb_block_count = 4+(1<<s->chroma_format);
55
 
 
56
 
    j=0;
57
 
    cbp<<= 12-mb_block_count;
58
 
    for(i=0; i<mb_block_count; i++){
59
 
        if(cbp & (1<<11)) {
60
 
           s->pblocks[i] = (short *)(&s->block[(j++)]);
61
 
        }else{
62
 
           s->pblocks[i] = NULL;
63
 
        }
64
 
        cbp+=cbp;
65
 
//        printf("s->pblocks[%d]=%p ,s->block=%p cbp=%d\n",i,s->pblocks[i],s->block,cbp);
66
 
    }
67
 
}
68
 
 
69
 
//These functions should be called on every new field and/or frame.
70
 
//They should be safe if they are called a few times for the same field!
71
 
int XVMC_field_start(MpegEncContext*s, AVCodecContext *avctx){
72
 
    struct xvmc_render_state * render, * last, * next;
73
 
 
74
 
    assert(avctx != NULL);
75
 
 
76
 
    render = (struct xvmc_render_state*)s->current_picture.data[2];
77
 
    assert(render != NULL);
78
 
    if( (render == NULL) || (render->magic != MP_XVMC_RENDER_MAGIC) )
79
 
        return -1;//make sure that this is render packet
80
 
 
81
 
    render->picture_structure = s->picture_structure;
82
 
    render->flags = (s->first_field)? 0: XVMC_SECOND_FIELD;
83
 
 
84
 
//make sure that all data is drawn by XVMC_end_frame
85
 
    assert(render->filled_mv_blocks_num==0);
86
 
 
87
 
    render->p_future_surface = NULL;
88
 
    render->p_past_surface = NULL;
89
 
 
90
 
    switch(s->pict_type){
91
 
        case  FF_I_TYPE:
92
 
            return 0;// no prediction from other frames
93
 
        case  FF_B_TYPE:
94
 
            next = (struct xvmc_render_state*)s->next_picture.data[2];
95
 
            assert(next!=NULL);
96
 
            assert(next->state & MP_XVMC_STATE_PREDICTION);
97
 
            if(next == NULL) return -1;
98
 
            if(next->magic != MP_XVMC_RENDER_MAGIC) return -1;
99
 
            render->p_future_surface = next->p_surface;
100
 
            //no return here, going to set forward prediction
101
 
        case  FF_P_TYPE:
102
 
            last = (struct xvmc_render_state*)s->last_picture.data[2];
103
 
            if(last == NULL)// && !s->first_field)
104
 
                last = render;//predict second field from the first
105
 
            if(last->magic != MP_XVMC_RENDER_MAGIC) return -1;
106
 
            assert(last->state & MP_XVMC_STATE_PREDICTION);
107
 
            render->p_past_surface = last->p_surface;
108
 
            return 0;
109
 
    }
110
 
 
111
 
return -1;
112
 
}
113
 
 
114
 
void XVMC_field_end(MpegEncContext *s){
115
 
    struct xvmc_render_state * render;
116
 
    render = (struct xvmc_render_state*)s->current_picture.data[2];
117
 
    assert(render != NULL);
118
 
 
119
 
    if(render->filled_mv_blocks_num > 0){
120
 
//        printf("xvmcvideo.c: rendering %d left blocks after last slice!!!\n",render->filled_mv_blocks_num );
121
 
        ff_draw_horiz_band(s,0,0);
122
 
    }
123
 
}
124
 
 
125
 
void XVMC_decode_mb(MpegEncContext *s){
126
 
XvMCMacroBlock * mv_block;
127
 
struct xvmc_render_state * render;
128
 
int i,cbp,blocks_per_mb;
129
 
 
130
 
const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
131
 
 
132
 
 
133
 
    if(s->encoding){
134
 
        av_log(s->avctx, AV_LOG_ERROR, "XVMC doesn't support encoding!!!\n");
135
 
        return;
136
 
    }
137
 
 
138
 
   //from MPV_decode_mb(),
139
 
    /* update DC predictors for P macroblocks */
140
 
    if (!s->mb_intra) {
141
 
        s->last_dc[0] =
142
 
        s->last_dc[1] =
143
 
        s->last_dc[2] =  128 << s->intra_dc_precision;
144
 
    }
145
 
 
146
 
   //MC doesn't skip blocks
147
 
    s->mb_skipped = 0;
148
 
 
149
 
 
150
 
   // Do I need to export quant when I could not perform postprocessing?
151
 
   // Anyway, it doesn't hurt.
152
 
    s->current_picture.qscale_table[mb_xy] = s->qscale;
153
 
 
154
 
//START OF XVMC specific code
155
 
    render = (struct xvmc_render_state*)s->current_picture.data[2];
156
 
    assert(render!=NULL);
157
 
    assert(render->magic==MP_XVMC_RENDER_MAGIC);
158
 
    assert(render->mv_blocks);
159
 
 
160
 
    //take the next free macroblock
161
 
    mv_block = &render->mv_blocks[render->start_mv_blocks_num +
162
 
                                   render->filled_mv_blocks_num ];
163
 
 
164
 
// memset(mv_block,0,sizeof(XvMCMacroBlock));
165
 
 
166
 
    mv_block->x = s->mb_x;
167
 
    mv_block->y = s->mb_y;
168
 
    mv_block->dct_type = s->interlaced_dct;//XVMC_DCT_TYPE_FRAME/FIELD;
169
 
//    mv_block->motion_type = 0;  //zero to silence warnings
170
 
    if(s->mb_intra){
171
 
        mv_block->macroblock_type = XVMC_MB_TYPE_INTRA;//no MC, all done
172
 
    }else{
173
 
        mv_block->macroblock_type = XVMC_MB_TYPE_PATTERN;
174
 
 
175
 
        if(s->mv_dir & MV_DIR_FORWARD){
176
 
            mv_block->macroblock_type|= XVMC_MB_TYPE_MOTION_FORWARD;
177
 
            //pmv[n][dir][xy]=mv[dir][n][xy]
178
 
            mv_block->PMV[0][0][0] = s->mv[0][0][0];
179
 
            mv_block->PMV[0][0][1] = s->mv[0][0][1];
180
 
            mv_block->PMV[1][0][0] = s->mv[0][1][0];
181
 
            mv_block->PMV[1][0][1] = s->mv[0][1][1];
182
 
        }
183
 
        if(s->mv_dir & MV_DIR_BACKWARD){
184
 
            mv_block->macroblock_type|=XVMC_MB_TYPE_MOTION_BACKWARD;
185
 
            mv_block->PMV[0][1][0] = s->mv[1][0][0];
186
 
            mv_block->PMV[0][1][1] = s->mv[1][0][1];
187
 
            mv_block->PMV[1][1][0] = s->mv[1][1][0];
188
 
            mv_block->PMV[1][1][1] = s->mv[1][1][1];
189
 
        }
190
 
 
191
 
        switch(s->mv_type){
192
 
            case  MV_TYPE_16X16:
193
 
                mv_block->motion_type = XVMC_PREDICTION_FRAME;
194
 
                break;
195
 
            case  MV_TYPE_16X8:
196
 
                mv_block->motion_type = XVMC_PREDICTION_16x8;
197
 
                break;
198
 
            case  MV_TYPE_FIELD:
199
 
                mv_block->motion_type = XVMC_PREDICTION_FIELD;
200
 
                if(s->picture_structure == PICT_FRAME){
201
 
                    mv_block->PMV[0][0][1]<<=1;
202
 
                    mv_block->PMV[1][0][1]<<=1;
203
 
                    mv_block->PMV[0][1][1]<<=1;
204
 
                    mv_block->PMV[1][1][1]<<=1;
205
 
                }
206
 
                break;
207
 
            case  MV_TYPE_DMV:
208
 
                mv_block->motion_type = XVMC_PREDICTION_DUAL_PRIME;
209
 
                if(s->picture_structure == PICT_FRAME){
210
 
 
211
 
                    mv_block->PMV[0][0][0] = s->mv[0][0][0];//top from top
212
 
                    mv_block->PMV[0][0][1] = s->mv[0][0][1]<<1;
213
 
 
214
 
                    mv_block->PMV[0][1][0] = s->mv[0][0][0];//bottom from bottom
215
 
                    mv_block->PMV[0][1][1] = s->mv[0][0][1]<<1;
216
 
 
217
 
                    mv_block->PMV[1][0][0] = s->mv[0][2][0];//dmv00, top from bottom
218
 
                    mv_block->PMV[1][0][1] = s->mv[0][2][1]<<1;//dmv01
219
 
 
220
 
                    mv_block->PMV[1][1][0] = s->mv[0][3][0];//dmv10, bottom from top
221
 
                    mv_block->PMV[1][1][1] = s->mv[0][3][1]<<1;//dmv11
222
 
 
223
 
                }else{
224
 
                    mv_block->PMV[0][1][0] = s->mv[0][2][0];//dmv00
225
 
                    mv_block->PMV[0][1][1] = s->mv[0][2][1];//dmv01
226
 
                }
227
 
                break;
228
 
            default:
229
 
                assert(0);
230
 
        }
231
 
 
232
 
        mv_block->motion_vertical_field_select = 0;
233
 
 
234
 
//set correct field references
235
 
        if(s->mv_type == MV_TYPE_FIELD || s->mv_type == MV_TYPE_16X8){
236
 
            if( s->field_select[0][0] ) mv_block->motion_vertical_field_select|=1;
237
 
            if( s->field_select[1][0] ) mv_block->motion_vertical_field_select|=2;
238
 
            if( s->field_select[0][1] ) mv_block->motion_vertical_field_select|=4;
239
 
            if( s->field_select[1][1] ) mv_block->motion_vertical_field_select|=8;
240
 
        }
241
 
    }//!intra
242
 
//time to handle data blocks;
243
 
    mv_block->index = render->next_free_data_block_num;
244
 
 
245
 
    blocks_per_mb = 6;
246
 
    if( s->chroma_format >= 2){
247
 
        blocks_per_mb = 4 + (1 << (s->chroma_format));
248
 
    }
249
 
 
250
 
//  calculate cbp
251
 
    cbp = 0;
252
 
    for(i=0; i<blocks_per_mb; i++) {
253
 
        cbp+= cbp;
254
 
        if(s->block_last_index[i] >= 0)
255
 
            cbp++;
256
 
    }
257
 
 
258
 
    if(s->flags & CODEC_FLAG_GRAY){
259
 
        if(s->mb_intra){//intra frames are always full chroma block
260
 
            for(i=4; i<blocks_per_mb; i++){
261
 
                memset(s->pblocks[i],0,sizeof(short)*8*8);//so we need to clear them
262
 
                if(!render->unsigned_intra)
263
 
                    s->pblocks[i][0] = 1<<10;
264
 
            }
265
 
        }else{
266
 
            cbp&= 0xf << (blocks_per_mb - 4);
267
 
            blocks_per_mb = 4;//luminance blocks only
268
 
        }
269
 
    }
270
 
    mv_block->coded_block_pattern = cbp;
271
 
    if(cbp == 0)
272
 
        mv_block->macroblock_type &= ~XVMC_MB_TYPE_PATTERN;
273
 
 
274
 
    for(i=0; i<blocks_per_mb; i++){
275
 
        if(s->block_last_index[i] >= 0){
276
 
            // I do not have unsigned_intra MOCO to test, hope it is OK.
277
 
            if( (s->mb_intra) && ( render->idct || (!render->idct && !render->unsigned_intra)) )
278
 
                s->pblocks[i][0]-=1<<10;
279
 
            if(!render->idct){
280
 
                s->dsp.idct(s->pblocks[i]);
281
 
                //!!TODO!clip!!!
282
 
            }
283
 
//copy blocks only if the codec doesn't support pblocks reordering
284
 
            if(s->avctx->xvmc_acceleration == 1){
285
 
                memcpy(&render->data_blocks[(render->next_free_data_block_num)*64],
286
 
                        s->pblocks[i],sizeof(short)*8*8);
287
 
            }else{
288
 
/*              if(s->pblocks[i] != &render->data_blocks[
289
 
                        (render->next_free_data_block_num)*64]){
290
 
                   printf("ERROR mb(%d,%d) s->pblocks[i]=%p data_block[]=%p\n",
291
 
                   s->mb_x,s->mb_y, s->pblocks[i],
292
 
                   &render->data_blocks[(render->next_free_data_block_num)*64]);
293
 
                }*/
294
 
            }
295
 
            render->next_free_data_block_num++;
296
 
        }
297
 
    }
298
 
    render->filled_mv_blocks_num++;
299
 
 
300
 
    assert(render->filled_mv_blocks_num <= render->total_number_of_mv_blocks);
301
 
    assert(render->next_free_data_block_num <= render->total_number_of_data_blocks);
302
 
 
303
 
 
304
 
    if(render->filled_mv_blocks_num >= render->total_number_of_mv_blocks)
305
 
        ff_draw_horiz_band(s,0,0);
306
 
 
307
 
// DumpRenderInfo(render);
308
 
// DumpMBlockInfo(mv_block);
309
 
 
310
 
}