Rename xvmc.c --> mpegvideo_xvmc.c as suggested by Ivan.

Originally committed as revision 17228 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 310 insertions, 0 deletions

diff --git a/libavcodec/mpegvideo_xvmc.c b/libavcodec/mpegvideo_xvmc.c
new file mode 100644
index 0000000000..ca01b9adea
--- /dev/null
+++ b/libavcodec/mpegvideo_xvmc.c
@@ -0,0 +1,310 @@
+/*
+ * XVideo Motion Compensation
+ * Copyright (c) 2003 Ivan Kalvachev
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <limits.h>
+
+//avcodec include
+#include "avcodec.h"
+#include "dsputil.h"
+#include "mpegvideo.h"
+
+#undef NDEBUG
+#include <assert.h>
+
+//X11 includes are in libavcodec/xvmc.h
+//by replacing it with non-X one
+//XvMC emulation could be performed
+
+#include "xvmc.h"
+
+//#include "xvmc_debug.h"
+
+//set s->block
+void XVMC_init_block(MpegEncContext *s){
+    struct xvmc_render_state * render;
+    render = (struct xvmc_render_state*)s->current_picture.data[2];
+    assert(render != NULL);
+    if( (render == NULL) || (render->magic != MP_XVMC_RENDER_MAGIC) ){
+        assert(0);
+        return;//make sure that this is a render packet
+    }
+    s->block =(DCTELEM *)(render->data_blocks+(render->next_free_data_block_num)*64);
+}
+
+void XVMC_pack_pblocks(MpegEncContext *s, int cbp){
+int i,j;
+const int mb_block_count = 4+(1<<s->chroma_format);
+
+    j=0;
+    cbp<<= 12-mb_block_count;
+    for(i=0; i<mb_block_count; i++){
+        if(cbp & (1<<11)) {
+           s->pblocks[i] = (short *)(&s->block[(j++)]);
+        }else{
+           s->pblocks[i] = NULL;
+        }
+        cbp+=cbp;
+//        printf("s->pblocks[%d]=%p ,s->block=%p cbp=%d\n",i,s->pblocks[i],s->block,cbp);
+    }
+}
+
+//These functions should be called on every new field and/or frame.
+//They should be safe if they are called a few times for the same field!
+int XVMC_field_start(MpegEncContext*s, AVCodecContext *avctx){
+    struct xvmc_render_state * render, * last, * next;
+
+    assert(avctx != NULL);
+
+    render = (struct xvmc_render_state*)s->current_picture.data[2];
+    assert(render != NULL);
+    if( (render == NULL) || (render->magic != MP_XVMC_RENDER_MAGIC) )
+        return -1;//make sure that this is render packet
+
+    render->picture_structure = s->picture_structure;
+    render->flags = (s->first_field)? 0: XVMC_SECOND_FIELD;
+
+//make sure that all data is drawn by XVMC_end_frame
+    assert(render->filled_mv_blocks_num==0);
+
+    render->p_future_surface = NULL;
+    render->p_past_surface = NULL;
+
+    switch(s->pict_type){
+        case  FF_I_TYPE:
+            return 0;// no prediction from other frames
+        case  FF_B_TYPE:
+            next = (struct xvmc_render_state*)s->next_picture.data[2];
+            assert(next!=NULL);
+            assert(next->state & MP_XVMC_STATE_PREDICTION);
+            if(next == NULL) return -1;
+            if(next->magic != MP_XVMC_RENDER_MAGIC) return -1;
+            render->p_future_surface = next->p_surface;
+            //no return here, going to set forward prediction
+        case  FF_P_TYPE:
+            last = (struct xvmc_render_state*)s->last_picture.data[2];
+            if(last == NULL)// && !s->first_field)
+                last = render;//predict second field from the first
+            if(last->magic != MP_XVMC_RENDER_MAGIC) return -1;
+            assert(last->state & MP_XVMC_STATE_PREDICTION);
+            render->p_past_surface = last->p_surface;
+            return 0;
+    }
+
+return -1;
+}
+
+void XVMC_field_end(MpegEncContext *s){
+    struct xvmc_render_state * render;
+    render = (struct xvmc_render_state*)s->current_picture.data[2];
+    assert(render != NULL);
+
+    if(render->filled_mv_blocks_num > 0){
+//        printf("xvmc: rendering %d left blocks after last slice!!!\n",render->filled_mv_blocks_num );
+        ff_draw_horiz_band(s,0,0);
+    }
+}
+
+void XVMC_decode_mb(MpegEncContext *s){
+XvMCMacroBlock * mv_block;
+struct xvmc_render_state * render;
+int i,cbp,blocks_per_mb;
+
+const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
+
+
+    if(s->encoding){
+        av_log(s->avctx, AV_LOG_ERROR, "XVMC doesn't support encoding!!!\n");
+        return;
+    }
+
+   //from MPV_decode_mb(),
+    /* update DC predictors for P macroblocks */
+    if (!s->mb_intra) {
+        s->last_dc[0] =
+        s->last_dc[1] =
+        s->last_dc[2] =  128 << s->intra_dc_precision;
+    }
+
+   //MC doesn't skip blocks
+    s->mb_skipped = 0;
+
+
+   // Do I need to export quant when I could not perform postprocessing?
+   // Anyway, it doesn't hurt.
+    s->current_picture.qscale_table[mb_xy] = s->qscale;
+
+//START OF XVMC specific code
+    render = (struct xvmc_render_state*)s->current_picture.data[2];
+    assert(render!=NULL);
+    assert(render->magic==MP_XVMC_RENDER_MAGIC);
+    assert(render->mv_blocks);
+
+    //take the next free macroblock
+    mv_block = &render->mv_blocks[render->start_mv_blocks_num +
+                                   render->filled_mv_blocks_num ];
+
+// memset(mv_block,0,sizeof(XvMCMacroBlock));
+
+    mv_block->x = s->mb_x;
+    mv_block->y = s->mb_y;
+    mv_block->dct_type = s->interlaced_dct;//XVMC_DCT_TYPE_FRAME/FIELD;
+//    mv_block->motion_type = 0;  //zero to silence warnings
+    if(s->mb_intra){
+        mv_block->macroblock_type = XVMC_MB_TYPE_INTRA;//no MC, all done
+    }else{
+        mv_block->macroblock_type = XVMC_MB_TYPE_PATTERN;
+
+        if(s->mv_dir & MV_DIR_FORWARD){
+            mv_block->macroblock_type|= XVMC_MB_TYPE_MOTION_FORWARD;
+            //pmv[n][dir][xy]=mv[dir][n][xy]
+            mv_block->PMV[0][0][0] = s->mv[0][0][0];
+            mv_block->PMV[0][0][1] = s->mv[0][0][1];
+            mv_block->PMV[1][0][0] = s->mv[0][1][0];
+            mv_block->PMV[1][0][1] = s->mv[0][1][1];
+        }
+        if(s->mv_dir & MV_DIR_BACKWARD){
+            mv_block->macroblock_type|=XVMC_MB_TYPE_MOTION_BACKWARD;
+            mv_block->PMV[0][1][0] = s->mv[1][0][0];
+            mv_block->PMV[0][1][1] = s->mv[1][0][1];
+            mv_block->PMV[1][1][0] = s->mv[1][1][0];
+            mv_block->PMV[1][1][1] = s->mv[1][1][1];
+        }
+
+        switch(s->mv_type){
+            case  MV_TYPE_16X16:
+                mv_block->motion_type = XVMC_PREDICTION_FRAME;
+                break;
+            case  MV_TYPE_16X8:
+                mv_block->motion_type = XVMC_PREDICTION_16x8;
+                break;
+            case  MV_TYPE_FIELD:
+                mv_block->motion_type = XVMC_PREDICTION_FIELD;
+                if(s->picture_structure == PICT_FRAME){
+                    mv_block->PMV[0][0][1]<<=1;
+                    mv_block->PMV[1][0][1]<<=1;
+                    mv_block->PMV[0][1][1]<<=1;
+                    mv_block->PMV[1][1][1]<<=1;
+                }
+                break;
+            case  MV_TYPE_DMV:
+                mv_block->motion_type = XVMC_PREDICTION_DUAL_PRIME;
+                if(s->picture_structure == PICT_FRAME){
+
+                    mv_block->PMV[0][0][0] = s->mv[0][0][0];//top from top
+                    mv_block->PMV[0][0][1] = s->mv[0][0][1]<<1;
+
+                    mv_block->PMV[0][1][0] = s->mv[0][0][0];//bottom from bottom
+                    mv_block->PMV[0][1][1] = s->mv[0][0][1]<<1;
+
+                    mv_block->PMV[1][0][0] = s->mv[0][2][0];//dmv00, top from bottom
+                    mv_block->PMV[1][0][1] = s->mv[0][2][1]<<1;//dmv01
+
+                    mv_block->PMV[1][1][0] = s->mv[0][3][0];//dmv10, bottom from top
+                    mv_block->PMV[1][1][1] = s->mv[0][3][1]<<1;//dmv11
+
+                }else{
+                    mv_block->PMV[0][1][0] = s->mv[0][2][0];//dmv00
+                    mv_block->PMV[0][1][1] = s->mv[0][2][1];//dmv01
+                }
+                break;
+            default:
+                assert(0);
+        }
+
+        mv_block->motion_vertical_field_select = 0;
+
+//set correct field references
+        if(s->mv_type == MV_TYPE_FIELD || s->mv_type == MV_TYPE_16X8){
+            if( s->field_select[0][0] ) mv_block->motion_vertical_field_select|=1;
+            if( s->field_select[1][0] ) mv_block->motion_vertical_field_select|=2;
+            if( s->field_select[0][1] ) mv_block->motion_vertical_field_select|=4;
+            if( s->field_select[1][1] ) mv_block->motion_vertical_field_select|=8;
+        }
+    }//!intra
+//time to handle data blocks;
+    mv_block->index = render->next_free_data_block_num;
+
+    blocks_per_mb = 6;
+    if( s->chroma_format >= 2){
+        blocks_per_mb = 4 + (1 << (s->chroma_format));
+    }
+
+//  calculate cbp
+    cbp = 0;
+    for(i=0; i<blocks_per_mb; i++) {
+        cbp+= cbp;
+        if(s->block_last_index[i] >= 0)
+            cbp++;
+    }
+
+    if(s->flags & CODEC_FLAG_GRAY){
+        if(s->mb_intra){//intra frames are always full chroma block
+            for(i=4; i<blocks_per_mb; i++){
+                memset(s->pblocks[i],0,sizeof(short)*8*8);//so we need to clear them
+                if(!render->unsigned_intra)
+                    s->pblocks[i][0] = 1<<10;
+            }
+        }else{
+            cbp&= 0xf << (blocks_per_mb - 4);
+            blocks_per_mb = 4;//luminance blocks only
+        }
+    }
+    mv_block->coded_block_pattern = cbp;
+    if(cbp == 0)
+        mv_block->macroblock_type &= ~XVMC_MB_TYPE_PATTERN;
+
+    for(i=0; i<blocks_per_mb; i++){
+        if(s->block_last_index[i] >= 0){
+            // I do not have unsigned_intra MOCO to test, hope it is OK.
+            if( (s->mb_intra) && ( render->idct || (!render->idct && !render->unsigned_intra)) )
+                s->pblocks[i][0]-=1<<10;
+            if(!render->idct){
+                s->dsp.idct(s->pblocks[i]);
+                //!!TODO!clip!!!
+            }
+//copy blocks only if the codec doesn't support pblocks reordering
+            if(s->avctx->xvmc_acceleration == 1){
+                memcpy(&render->data_blocks[(render->next_free_data_block_num)*64],
+                        s->pblocks[i],sizeof(short)*8*8);
+            }else{
+/*              if(s->pblocks[i] != &render->data_blocks[
+                        (render->next_free_data_block_num)*64]){
+                   printf("ERROR mb(%d,%d) s->pblocks[i]=%p data_block[]=%p\n",
+                   s->mb_x,s->mb_y, s->pblocks[i],
+                   &render->data_blocks[(render->next_free_data_block_num)*64]);
+                }*/
+            }
+            render->next_free_data_block_num++;
+        }
+    }
+    render->filled_mv_blocks_num++;
+
+    assert(render->filled_mv_blocks_num <= render->total_number_of_mv_blocks);
+    assert(render->next_free_data_block_num <= render->total_number_of_data_blocks);
+
+
+    if(render->filled_mv_blocks_num >= render->total_number_of_mv_blocks)
+        ff_draw_horiz_band(s,0,0);
+
+// DumpRenderInfo(render);
+// DumpMBlockInfo(mv_block);
+
+}