#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"
//set s->block
-void XVMC_init_block(MpegEncContext *s)
+void ff_xvmc_init_block(MpegEncContext *s)
{
- struct xvmc_render_state * render;
+ 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(render);
+ if (!render || render->magic != AV_XVMC_RENDER_MAGIC) {
assert(0);
- return;//make sure that this is a render packet
+ return; // make sure that this is a render packet
}
- s->block = (DCTELEM *)(render->data_blocks+(render->next_free_data_block_num)*64);
+ s->block = (DCTELEM *)(render->data_blocks + render->next_free_data_block_num * 64);
}
-void XVMC_pack_pblocks(MpegEncContext *s, int cbp)
+void ff_xvmc_pack_pblocks(MpegEncContext *s, int cbp)
{
- int i,j;
+ 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{
+ if (cbp & (1 << 11))
+ s->pblocks[i] = (short *)(&s->block[j++]);
+ else
s->pblocks[i] = NULL;
- }
cbp+=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)
+// 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 ff_xvmc_field_start(MpegEncContext*s, AVCodecContext *avctx)
{
- struct xvmc_render_state * render, * last, * next;
+ struct xvmc_render_state *render, *last, *next;
- assert(avctx != NULL);
+ assert(avctx);
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
+ assert(render);
+ if (!render || render->magic != AV_XVMC_RENDER_MAGIC)
+ return -1; // make sure that this is a render packet
render->picture_structure = s->picture_structure;
- render->flags = (s->first_field) ? 0 : XVMC_SECOND_FIELD;
+ 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;
+ render->p_past_surface = NULL;
- switch(s->pict_type){
+ switch(s->pict_type) {
case FF_I_TYPE:
- return 0;// no prediction from other frames
+ 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)
+ assert(next);
+ if (!next)
return -1;
- if (next->magic != MP_XVMC_RENDER_MAGIC)
+ if (next->magic != AV_XVMC_RENDER_MAGIC)
return -1;
render->p_future_surface = next->p_surface;
- //no return here, going to set forward prediction
+ // 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)
+ if (!last)
+ last = render; // predict second field from the first
+ if (last->magic != AV_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)
+void ff_xvmc_field_end(MpegEncContext *s)
{
- struct xvmc_render_state * render;
+ struct xvmc_render_state *render;
render = (struct xvmc_render_state*)s->current_picture.data[2];
- assert(render != NULL);
+ assert(render);
if (render->filled_mv_blocks_num > 0)
ff_draw_horiz_band(s,0,0);
}
-void XVMC_decode_mb(MpegEncContext *s)
+void ff_xvmc_decode_mb(MpegEncContext *s)
{
- XvMCMacroBlock * mv_block;
- struct xvmc_render_state * render;
- int i,cbp,blocks_per_mb;
+ 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;
return;
}
- //from MPV_decode_mb(),
- /* update DC predictors for P macroblocks */
+ // 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
+ // 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.
+ // 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
+ // 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);
+ assert(render->magic == AV_XVMC_RENDER_MAGIC);
assert(render->mv_blocks);
- //take the next free macroblock
+ // take the next free macroblock
mv_block = &render->mv_blocks[render->start_mv_blocks_num +
render->filled_mv_blocks_num ];
- mv_block->x = s->mb_x;
- mv_block->y = s->mb_y;
- mv_block->dct_type = s->interlaced_dct;//XVMC_DCT_TYPE_FRAME/FIELD;
- if (s->mb_intra){
- mv_block->macroblock_type = XVMC_MB_TYPE_INTRA;//no MC, all done
- }else{
+ mv_block->x = s->mb_x;
+ mv_block->y = s->mb_y;
+ mv_block->dct_type = s->interlaced_dct; // XVMC_DCT_TYPE_FRAME/FIELD;
+ 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]
+ // 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->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][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][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][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
+ 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
+ } 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:
mv_block->motion_vertical_field_select = 0;
-//set correct field references
+ // 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;
+ mv_block->motion_vertical_field_select |= s->field_select[0][0];
+ mv_block->motion_vertical_field_select |= s->field_select[1][0] << 1;
+ mv_block->motion_vertical_field_select |= s->field_select[0][1] << 2;
+ mv_block->motion_vertical_field_select |= s->field_select[1][1] << 3;
}
- }//!intra
-//time to handle data blocks;
+ } // !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));
+ blocks_per_mb = 4 + (1 << s->chroma_format);
}
-// calculate cbp
+ // calculate cbp
cbp = 0;
for (i = 0; i < blocks_per_mb; i++) {
cbp += cbp;
}
if (s->flags & CODEC_FLAG_GRAY) {
- if (s->mb_intra){//intra frames are always full chroma block
+ if (s->mb_intra) { // intra frames are always full chroma blocks
for (i = 4; i < blocks_per_mb; i++) {
- memset(s->pblocks[i],0,sizeof(short)*8*8);//so we need to clear them
+ 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{
+ } else {
cbp &= 0xf << (blocks_per_mb - 4);
- blocks_per_mb = 4;//luminance blocks only
+ blocks_per_mb = 4; // luminance blocks only
}
}
mv_block->coded_block_pattern = cbp;
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)))
+ 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!!!
+ /* It is unclear if MC hardware requires pixel diff values to be
+ * in the range [-255;255]. TODO: Clipping if such hardware is
+ * ever found. As of now it would only be an unnecessary
+ * slowdown. */
}
-//copy blocks only if the codec doesn't support pblocks reordering
+ // 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],
+ memcpy(&render->data_blocks[render->next_free_data_block_num*64],
s->pblocks[i],sizeof(short)*8*8);
}
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->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);
+ ff_draw_horiz_band(s, 0, 0);
}
projects / ffmpeg / blobdiff