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rv34: Inter/intra MB code split

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Split inter/intra macroblock handling code. This will allow further
optimizations such as performing inverse transform and block reconstruction
in a single pass as well as specialize code.

Signed-off-by: Janne Grunau <janne-libav@jannau.net>
This commit is contained in:
Christophe GISQUET 2012-01-02 20:53:54 +01:00 committed by Janne Grunau
parent 2df5f59ad0
commit 3eeb755763
1 changed files with 194 additions and 56 deletions
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250
libavcodec/rv34.c
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@ -351,44 +351,70 @@ static inline RV34VLC* choose_vlc_set(int quant, int mod, int type)
}
/**
* Decode macroblock header and return CBP in case of success, -1 otherwise.
* Decode intra macroblock header and return CBP in case of success, -1 otherwise.
*/
static int rv34_decode_mb_header(RV34DecContext *r, int8_t *intra_types)
static int rv34_decode_intra_mb_header(RV34DecContext *r, int8_t *intra_types)
{
MpegEncContext *s = &r->s;
GetBitContext *gb = &s->gb;
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
int t;
r->is16 = get_bits1(gb);
if(r->is16){
s->current_picture_ptr->f.mb_type[mb_pos] = MB_TYPE_INTRA16x16;
r->block_type = RV34_MB_TYPE_INTRA16x16;
t = get_bits(gb, 2);
fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0]));
r->luma_vlc = 2;
}else{
if(!r->rv30){
if(!get_bits1(gb))
av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n");
}
s->current_picture_ptr->f.mb_type[mb_pos] = MB_TYPE_INTRA;
r->block_type = RV34_MB_TYPE_INTRA;
if(r->decode_intra_types(r, gb, intra_types) < 0)
return -1;
r->luma_vlc = 1;
}
r->chroma_vlc = 0;
r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
return rv34_decode_cbp(gb, r->cur_vlcs, r->is16);
}
/**
* Decode inter macroblock header and return CBP in case of success, -1 otherwise.
*/
static int rv34_decode_inter_mb_header(RV34DecContext *r, int8_t *intra_types)
{
MpegEncContext *s = &r->s;
GetBitContext *gb = &s->gb;
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
int i, t;
if(!r->si.type){
r->is16 = get_bits1(gb);
if(!r->is16 && !r->rv30){
if(!get_bits1(gb))
av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n");
}
s->current_picture_ptr->f.mb_type[mb_pos] = r->is16 ? MB_TYPE_INTRA16x16 : MB_TYPE_INTRA;
r->block_type = r->is16 ? RV34_MB_TYPE_INTRA16x16 : RV34_MB_TYPE_INTRA;
}else{
r->block_type = r->decode_mb_info(r);
if(r->block_type == -1)
return -1;
s->current_picture_ptr->f.mb_type[mb_pos] = rv34_mb_type_to_lavc[r->block_type];
r->mb_type[mb_pos] = r->block_type;
if(r->block_type == RV34_MB_SKIP){
if(s->pict_type == AV_PICTURE_TYPE_P)
r->mb_type[mb_pos] = RV34_MB_P_16x16;
if(s->pict_type == AV_PICTURE_TYPE_B)
r->mb_type[mb_pos] = RV34_MB_B_DIRECT;
}
r->is16 = !!IS_INTRA16x16(s->current_picture_ptr->f.mb_type[mb_pos]);
rv34_decode_mv(r, r->block_type);
if(r->block_type == RV34_MB_SKIP){
fill_rectangle(intra_types, 4, 4, r->intra_types_stride, 0, sizeof(intra_types[0]));
return 0;
}
r->chroma_vlc = 1;
r->luma_vlc = 0;
r->block_type = r->decode_mb_info(r);
if(r->block_type == -1)
return -1;
s->current_picture_ptr->f.mb_type[mb_pos] = rv34_mb_type_to_lavc[r->block_type];
r->mb_type[mb_pos] = r->block_type;
if(r->block_type == RV34_MB_SKIP){
if(s->pict_type == AV_PICTURE_TYPE_P)
r->mb_type[mb_pos] = RV34_MB_P_16x16;
if(s->pict_type == AV_PICTURE_TYPE_B)
r->mb_type[mb_pos] = RV34_MB_B_DIRECT;
}
r->is16 = !!IS_INTRA16x16(s->current_picture_ptr->f.mb_type[mb_pos]);
rv34_decode_mv(r, r->block_type);
if(r->block_type == RV34_MB_SKIP){
fill_rectangle(intra_types, 4, 4, r->intra_types_stride, 0, sizeof(intra_types[0]));
return 0;
}
r->chroma_vlc = 1;
r->luma_vlc = 0;
if(IS_INTRA(s->current_picture_ptr->f.mb_type[mb_pos])){
if(r->is16){
t = get_bits(gb, 2);
@ -1123,7 +1149,7 @@ static int rv34_set_deblock_coef(RV34DecContext *r)
return hmvmask | vmvmask;
}
static int rv34_decode_macroblock(RV34DecContext *r, int8_t *intra_types)
static int rv34_decode_inter_macroblock(RV34DecContext *r, int8_t *intra_types)
{
MpegEncContext *s = &r->s;
GetBitContext *gb = &s->gb;
@ -1131,7 +1157,6 @@ static int rv34_decode_macroblock(RV34DecContext *r, int8_t *intra_types)
int q_dc, q_ac, has_ac;
int i, blknum, blkoff;
LOCAL_ALIGNED_16(DCTELEM, block16, [64]);
int luma_dc_quant;
int dist;
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
@ -1151,20 +1176,19 @@ static int rv34_decode_macroblock(RV34DecContext *r, int8_t *intra_types)
r->avail_cache[1] = s->current_picture_ptr->f.mb_type[mb_pos - s->mb_stride - 1];
s->qscale = r->si.quant;
cbp = cbp2 = rv34_decode_mb_header(r, intra_types);
cbp = cbp2 = rv34_decode_inter_mb_header(r, intra_types);
r->cbp_luma [mb_pos] = cbp;
r->cbp_chroma[mb_pos] = cbp >> 16;
if(s->pict_type == AV_PICTURE_TYPE_I)
r->deblock_coefs[mb_pos] = 0xFFFF;
else
r->deblock_coefs[mb_pos] = rv34_set_deblock_coef(r) | r->cbp_luma[mb_pos];
r->deblock_coefs[mb_pos] = rv34_set_deblock_coef(r) | r->cbp_luma[mb_pos];
s->current_picture_ptr->f.qscale_table[mb_pos] = s->qscale;
if(cbp == -1)
return -1;
luma_dc_quant = r->block_type == RV34_MB_P_MIX16x16 ? r->luma_dc_quant_p[s->qscale] : r->luma_dc_quant_i[s->qscale];
if(r->is16){
int luma_dc_quant = r->block_type == RV34_MB_P_MIX16x16
? r->luma_dc_quant_p[s->qscale]
: r->luma_dc_quant_i[s->qscale];
q_dc = rv34_qscale_tab[luma_dc_quant];
q_ac = rv34_qscale_tab[s->qscale];
s->dsp.clear_block(block16);
@ -1172,25 +1196,37 @@ static int rv34_decode_macroblock(RV34DecContext *r, int8_t *intra_types)
r->rdsp.rv34_inv_transform_tab[1](block16);
else
r->rdsp.rv34_inv_transform_dc_tab[1](block16);
}
q_ac = rv34_qscale_tab[s->qscale];
for(i = 0; i < 16; i++, cbp >>= 1){
DCTELEM *ptr;
if(!r->is16 && !(cbp & 1)) continue;
blknum = ((i & 2) >> 1) + ((i & 8) >> 2);
blkoff = ((i & 1) << 2) + ((i & 4) << 3);
ptr = s->block[blknum] + blkoff;
if(cbp & 1)
has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac);
else
has_ac = 0;
if(r->is16) //FIXME: optimize
q_ac = rv34_qscale_tab[s->qscale];
for(i = 0; i < 16; i++, cbp >>= 1){
DCTELEM *ptr;
blknum = ((i & 2) >> 1) + ((i & 8) >> 2);
blkoff = ((i & 1) << 2) + ((i & 4) << 3);
ptr = s->block[blknum] + blkoff;
if(cbp & 1)
has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac);
else
has_ac = 0;
ptr[0] = block16[(i & 3) | ((i & 0xC) << 1)];
if(has_ac)
r->rdsp.rv34_inv_transform_tab[0](ptr);
else
r->rdsp.rv34_inv_transform_dc_tab[0](ptr);
if(has_ac)
r->rdsp.rv34_inv_transform_tab[0](ptr);
else
r->rdsp.rv34_inv_transform_dc_tab[0](ptr);
}
}else{
q_ac = rv34_qscale_tab[s->qscale];
for(i = 0; i < 16; i++, cbp >>= 1){
DCTELEM *ptr;
if(!(cbp & 1)) continue;
blknum = ((i & 2) >> 1) + ((i & 8) >> 2);
blkoff = ((i & 1) << 2) + ((i & 4) << 3);
ptr = s->block[blknum] + blkoff;
has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac);
if(has_ac)
r->rdsp.rv34_inv_transform_tab[0](ptr);
else
r->rdsp.rv34_inv_transform_dc_tab[0](ptr);
}
}
if(r->block_type == RV34_MB_P_MIX16x16)
r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
@ -1215,6 +1251,104 @@ static int rv34_decode_macroblock(RV34DecContext *r, int8_t *intra_types)
return 0;
}
static int rv34_decode_intra_macroblock(RV34DecContext *r, int8_t *intra_types)
{
MpegEncContext *s = &r->s;
GetBitContext *gb = &s->gb;
int cbp, cbp2;
int q_dc, q_ac, has_ac;
int i, blknum, blkoff;
LOCAL_ALIGNED_16(DCTELEM, block16, [64]);
int dist;
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
// Calculate which neighbours are available. Maybe it's worth optimizing too.
memset(r->avail_cache, 0, sizeof(r->avail_cache));
fill_rectangle(r->avail_cache + 6, 2, 2, 4, 1, 4);
dist = (s->mb_x - s->resync_mb_x) + (s->mb_y - s->resync_mb_y) * s->mb_width;
if(s->mb_x && dist)
r->avail_cache[5] =
r->avail_cache[9] = s->current_picture_ptr->f.mb_type[mb_pos - 1];
if(dist >= s->mb_width)
r->avail_cache[2] =
r->avail_cache[3] = s->current_picture_ptr->f.mb_type[mb_pos - s->mb_stride];
if(((s->mb_x+1) < s->mb_width) && dist >= s->mb_width - 1)
r->avail_cache[4] = s->current_picture_ptr->f.mb_type[mb_pos - s->mb_stride + 1];
if(s->mb_x && dist > s->mb_width)
r->avail_cache[1] = s->current_picture_ptr->f.mb_type[mb_pos - s->mb_stride - 1];
s->qscale = r->si.quant;
cbp = cbp2 = rv34_decode_intra_mb_header(r, intra_types);
r->cbp_luma [mb_pos] = cbp;
r->cbp_chroma[mb_pos] = cbp >> 16;
r->deblock_coefs[mb_pos] = 0xFFFF;
s->current_picture_ptr->f.qscale_table[mb_pos] = s->qscale;
if(cbp == -1)
return -1;
if(r->is16){
int luma_dc_quant = r->block_type == RV34_MB_P_MIX16x16
? r->luma_dc_quant_p[s->qscale]
: r->luma_dc_quant_i[s->qscale];
q_dc = rv34_qscale_tab[luma_dc_quant];
q_ac = rv34_qscale_tab[s->qscale];
s->dsp.clear_block(block16);
if (rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0, q_dc, q_dc, q_ac))
r->rdsp.rv34_inv_transform_tab[1](block16);
else
r->rdsp.rv34_inv_transform_dc_tab[1](block16);
q_ac = rv34_qscale_tab[s->qscale];
for(i = 0; i < 16; i++, cbp >>= 1){
DCTELEM *ptr;
blknum = ((i & 2) >> 1) + ((i & 8) >> 2);
blkoff = ((i & 1) << 2) + ((i & 4) << 3);
ptr = s->block[blknum] + blkoff;
if(cbp & 1)
has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac);
else
has_ac = 0;
ptr[0] = block16[(i & 3) | ((i & 0xC) << 1)];
if(has_ac)
r->rdsp.rv34_inv_transform_tab[0](ptr);
else
r->rdsp.rv34_inv_transform_dc_tab[0](ptr);
}
}else{
q_ac = rv34_qscale_tab[s->qscale];
for(i = 0; i < 16; i++, cbp >>= 1){
DCTELEM *ptr;
if(!(cbp & 1)) continue;
blknum = ((i & 2) >> 1) + ((i & 8) >> 2);
blkoff = ((i & 1) << 2) + ((i & 4) << 3);
ptr = s->block[blknum] + blkoff;
has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac);
if(has_ac)
r->rdsp.rv34_inv_transform_tab[0](ptr);
else
r->rdsp.rv34_inv_transform_dc_tab[0](ptr);
}
}
q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]];
q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]];
for(; i < 24; i++, cbp >>= 1){
DCTELEM *ptr;
if(!(cbp & 1)) continue;
blknum = ((i & 4) >> 2) + 4;
blkoff = ((i & 1) << 2) + ((i & 2) << 4);
ptr = s->block[blknum] + blkoff;
if (rv34_decode_block(ptr, gb, r->cur_vlcs, r->chroma_vlc, 1, q_dc, q_ac, q_ac))
r->rdsp.rv34_inv_transform_tab[0](ptr);
else
r->rdsp.rv34_inv_transform_dc_tab[0](ptr);
}
rv34_output_macroblock(r, intra_types, cbp2, r->is16);
return 0;
}
static int check_slice_end(RV34DecContext *r, MpegEncContext *s)
{
int bits;
@ -1324,7 +1458,11 @@ static int rv34_decode_slice(RV34DecContext *r, int end, const uint8_t* buf, int
ff_update_block_index(s);
s->dsp.clear_blocks(s->block[0]);
if(rv34_decode_macroblock(r, r->intra_types + s->mb_x * 4 + 4) < 0){
if(r->si.type)
res = rv34_decode_inter_macroblock(r, r->intra_types + s->mb_x * 4 + 4);
else
res = rv34_decode_intra_macroblock(r, r->intra_types + s->mb_x * 4 + 4);
if(res < 0){
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_ERROR);
return -1;
}