377 lines
13 KiB
C
377 lines
13 KiB
C
|
/*
|
||
|
|
* 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>
|
||
|
|
#include <X11/extensions/XvMC.h>
|
||
|
|
|
||
|
|
#include "avcodec.h"
|
||
|
|
#include "mpegutils.h"
|
||
|
|
#include "mpegvideo.h"
|
||
|
|
|
||
|
|
#undef NDEBUG
|
||
|
|
#include <assert.h>
|
||
|
|
|
||
|
|
#include "xvmc.h"
|
||
|
|
#include "xvmc_internal.h"
|
||
|
|
#include "version.h"
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Initialize the block field of the MpegEncContext pointer passed as
|
||
|
|
* parameter after making sure that the data is not corrupted.
|
||
|
|
* In order to implement something like direct rendering instead of decoding
|
||
|
|
* coefficients in s->blocks and then copying them, copy them directly
|
||
|
|
* into the data_blocks array provided by xvmc.
|
||
|
|
*/
|
||
|
|
void ff_xvmc_init_block(MpegEncContext *s)
|
||
|
|
{
|
||
|
|
struct xvmc_pix_fmt *render = (struct xvmc_pix_fmt*)s->current_picture.f->data[2];
|
||
|
|
assert(render && render->xvmc_id == AV_XVMC_ID);
|
||
|
|
|
||
|
|
s->block = (int16_t (*)[64])(render->data_blocks + render->next_free_data_block_num * 64);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void exchange_uv(MpegEncContext *s)
|
||
|
|
{
|
||
|
|
int16_t (*tmp)[64];
|
||
|
|
|
||
|
|
tmp = s->pblocks[4];
|
||
|
|
s->pblocks[4] = s->pblocks[5];
|
||
|
|
s->pblocks[5] = tmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Fill individual block pointers, so there are no gaps in the data_block array
|
||
|
|
* in case not all blocks in the macroblock are coded.
|
||
|
|
*/
|
||
|
|
void ff_xvmc_pack_pblocks(MpegEncContext *s, int cbp)
|
||
|
|
{
|
||
|
|
int i, j = 0;
|
||
|
|
const int mb_block_count = 4 + (1 << s->chroma_format);
|
||
|
|
|
||
|
|
cbp <<= 12-mb_block_count;
|
||
|
|
for (i = 0; i < mb_block_count; i++) {
|
||
|
|
if (cbp & (1 << 11))
|
||
|
|
s->pblocks[i] = &s->block[j++];
|
||
|
|
else
|
||
|
|
s->pblocks[i] = NULL;
|
||
|
|
cbp += cbp;
|
||
|
|
}
|
||
|
|
if (s->swap_uv) {
|
||
|
|
exchange_uv(s);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Find and store the surfaces that are used as reference frames.
|
||
|
|
* This function should be called for every new field and/or frame.
|
||
|
|
* It should be safe to call the function a few times for the same field.
|
||
|
|
*/
|
||
|
|
static int ff_xvmc_field_start(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size)
|
||
|
|
{
|
||
|
|
struct MpegEncContext *s = avctx->priv_data;
|
||
|
|
struct xvmc_pix_fmt *last, *next, *render = (struct xvmc_pix_fmt*)s->current_picture.f->data[2];
|
||
|
|
const int mb_block_count = 4 + (1 << s->chroma_format);
|
||
|
|
|
||
|
|
assert(avctx);
|
||
|
|
if (!render || render->xvmc_id != AV_XVMC_ID ||
|
||
|
|
!render->data_blocks || !render->mv_blocks ||
|
||
|
|
(unsigned int)render->allocated_mv_blocks > INT_MAX/(64*6) ||
|
||
|
|
(unsigned int)render->allocated_data_blocks > INT_MAX/64 ||
|
||
|
|
!render->p_surface) {
|
||
|
|
av_log(avctx, AV_LOG_ERROR,
|
||
|
|
"Render token doesn't look as expected.\n");
|
||
|
|
return -1; // make sure that this is a render packet
|
||
|
|
}
|
||
|
|
|
||
|
|
if (render->filled_mv_blocks_num) {
|
||
|
|
av_log(avctx, AV_LOG_ERROR,
|
||
|
|
"Rendering surface contains %i unprocessed blocks.\n",
|
||
|
|
render->filled_mv_blocks_num);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
if (render->allocated_mv_blocks < 1 ||
|
||
|
|
render->allocated_data_blocks < render->allocated_mv_blocks*mb_block_count ||
|
||
|
|
render->start_mv_blocks_num >= render->allocated_mv_blocks ||
|
||
|
|
render->next_free_data_block_num >
|
||
|
|
render->allocated_data_blocks -
|
||
|
|
mb_block_count*(render->allocated_mv_blocks-render->start_mv_blocks_num)) {
|
||
|
|
av_log(avctx, AV_LOG_ERROR,
|
||
|
|
"Rendering surface doesn't provide enough block structures to work with.\n");
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
render->picture_structure = s->picture_structure;
|
||
|
|
render->flags = s->first_field ? 0 : XVMC_SECOND_FIELD;
|
||
|
|
render->p_future_surface = NULL;
|
||
|
|
render->p_past_surface = NULL;
|
||
|
|
|
||
|
|
switch(s->pict_type) {
|
||
|
|
case AV_PICTURE_TYPE_I:
|
||
|
|
return 0; // no prediction from other frames
|
||
|
|
case AV_PICTURE_TYPE_B:
|
||
|
|
next = (struct xvmc_pix_fmt*)s->next_picture.f->data[2];
|
||
|
|
if (!next)
|
||
|
|
return -1;
|
||
|
|
if (next->xvmc_id != AV_XVMC_ID)
|
||
|
|
return -1;
|
||
|
|
render->p_future_surface = next->p_surface;
|
||
|
|
// no return here, going to set forward prediction
|
||
|
|
case AV_PICTURE_TYPE_P:
|
||
|
|
last = (struct xvmc_pix_fmt*)s->last_picture.f->data[2];
|
||
|
|
if (!last)
|
||
|
|
last = render; // predict second field from the first
|
||
|
|
if (last->xvmc_id != AV_XVMC_ID)
|
||
|
|
return -1;
|
||
|
|
render->p_past_surface = last->p_surface;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Complete frame/field rendering by passing any remaining blocks.
|
||
|
|
* Normally ff_draw_horiz_band() is called for each slice, however,
|
||
|
|
* some leftover blocks, for example from error_resilience(), may remain.
|
||
|
|
* It should be safe to call the function a few times for the same field.
|
||
|
|
*/
|
||
|
|
static int ff_xvmc_field_end(AVCodecContext *avctx)
|
||
|
|
{
|
||
|
|
struct MpegEncContext *s = avctx->priv_data;
|
||
|
|
struct xvmc_pix_fmt *render = (struct xvmc_pix_fmt*)s->current_picture.f->data[2];
|
||
|
|
assert(render);
|
||
|
|
|
||
|
|
if (render->filled_mv_blocks_num > 0)
|
||
|
|
ff_mpeg_draw_horiz_band(s, 0, 0);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Synthesize the data needed by XvMC to render one macroblock of data.
|
||
|
|
* Fill all relevant fields, if necessary do IDCT.
|
||
|
|
*/
|
||
|
|
static void ff_xvmc_decode_mb(struct MpegEncContext *s)
|
||
|
|
{
|
||
|
|
XvMCMacroBlock *mv_block;
|
||
|
|
struct xvmc_pix_fmt *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 ff_mpv_reconstruct_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_pix_fmt*)s->current_picture.f->data[2];
|
||
|
|
assert(render);
|
||
|
|
assert(render->xvmc_id == AV_XVMC_ID);
|
||
|
|
assert(render->mv_blocks);
|
||
|
|
|
||
|
|
// 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->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) {
|
||
|
|
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
|
||
|
|
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->avctx->flags & AV_CODEC_FLAG_GRAY) {
|
||
|
|
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(*s->pblocks[i])); // 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->unsigned_intra))
|
||
|
|
*s->pblocks[i][0] -= 1 << 10;
|
||
|
|
if (!render->idct) {
|
||
|
|
s->idsp.idct(*s->pblocks[i]);
|
||
|
|
/* 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
|
||
|
|
if (!s->pack_pblocks) {
|
||
|
|
memcpy(&render->data_blocks[render->next_free_data_block_num*64],
|
||
|
|
s->pblocks[i], sizeof(*s->pblocks[i]));
|
||
|
|
}
|
||
|
|
render->next_free_data_block_num++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
render->filled_mv_blocks_num++;
|
||
|
|
|
||
|
|
assert(render->filled_mv_blocks_num <= render->allocated_mv_blocks);
|
||
|
|
assert(render->next_free_data_block_num <= render->allocated_data_blocks);
|
||
|
|
/* The above conditions should not be able to fail as long as this function
|
||
|
|
* is used and the following 'if ()' automatically calls a callback to free
|
||
|
|
* blocks. */
|
||
|
|
|
||
|
|
|
||
|
|
if (render->filled_mv_blocks_num == render->allocated_mv_blocks)
|
||
|
|
ff_mpeg_draw_horiz_band(s, 0, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
#if CONFIG_MPEG1_XVMC_HWACCEL
|
||
|
|
const AVHWAccel ff_mpeg1_xvmc_hwaccel = {
|
||
|
|
.name = "mpeg1_xvmc",
|
||
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
||
|
|
.id = AV_CODEC_ID_MPEG1VIDEO,
|
||
|
|
.pix_fmt = AV_PIX_FMT_XVMC,
|
||
|
|
.start_frame = ff_xvmc_field_start,
|
||
|
|
.end_frame = ff_xvmc_field_end,
|
||
|
|
.decode_slice = NULL,
|
||
|
|
.decode_mb = ff_xvmc_decode_mb,
|
||
|
|
.priv_data_size = 0,
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if CONFIG_MPEG2_XVMC_HWACCEL
|
||
|
|
const AVHWAccel ff_mpeg2_xvmc_hwaccel = {
|
||
|
|
.name = "mpeg2_xvmc",
|
||
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
||
|
|
.id = AV_CODEC_ID_MPEG2VIDEO,
|
||
|
|
.pix_fmt = AV_PIX_FMT_XVMC,
|
||
|
|
.start_frame = ff_xvmc_field_start,
|
||
|
|
.end_frame = ff_xvmc_field_end,
|
||
|
|
.decode_slice = NULL,
|
||
|
|
.decode_mb = ff_xvmc_decode_mb,
|
||
|
|
.priv_data_size = 0,
|
||
|
|
};
|
||
|
|
#endif
|