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Moving quantization and loopfilter data to uncompressed header. 

Overall PSNR drop on derf set is -0.024.

Change-Id: I1c05d2ace83488205ca16e3b06cd5f0ebceec8d6
This commit is contained in:
Dmitry Kovalev 2013-06-03 10:50:57 -07:00
Родитель 317d832d38
Коммит b8b91b2f91
2 изменённых файлов: 70 добавлений и 96 удалений
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90
vp9/decoder/vp9_decodframe.c
Просмотреть файл

@ -40,10 +40,6 @@
int dec_debug = 0;
#endif
static int read_le16(const uint8_t *p) {
return (p[1] << 8) | p[0];
}
static int read_le32(const uint8_t *p) {
return (p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0];
}
@ -186,21 +182,6 @@ static void mb_init_dequantizer(VP9_COMMON *pc, MACROBLOCKD *xd) {
xd->plane[i].dequant = pc->uv_dequant[xd->q_index];
}
static INLINE void dequant_add_y(MACROBLOCKD *xd, TX_TYPE tx_type, int idx,
BLOCK_SIZE_TYPE bsize) {
struct macroblockd_plane *const y = &xd->plane[0];
uint8_t* const dst = raster_block_offset_uint8(xd, bsize, 0, idx,
xd->plane[0].dst.buf,
xd->plane[0].dst.stride);
if (tx_type != DCT_DCT) {
vp9_iht_add_c(tx_type, BLOCK_OFFSET(y->qcoeff, idx, 16),
dst, xd->plane[0].dst.stride, y->eobs[idx]);
} else {
xd->itxm_add(BLOCK_OFFSET(y->qcoeff, idx, 16),
dst, xd->plane[0].dst.stride, y->eobs[idx]);
}
}
static void decode_block(int plane, int block, BLOCK_SIZE_TYPE bsize,
int ss_txfrm_size, void *arg) {
MACROBLOCKD* const xd = arg;
@ -383,18 +364,6 @@ static void decode_sb(VP9D_COMP *pbi, MACROBLOCKD *xd, int mi_row, int mi_col,
}
}
static int get_delta_q(vp9_reader *r, int *dq) {
const int old_value = *dq;
if (vp9_read_bit(r)) { // Update bit
const int value = vp9_read_literal(r, 4);
*dq = vp9_read_and_apply_sign(r, value);
}
// Trigger a quantizer update if the delta-q value has changed
return old_value != *dq;
}
static void set_offsets(VP9D_COMP *pbi, BLOCK_SIZE_TYPE bsize,
int mi_row, int mi_col) {
const int bh = 1 << mi_height_log2(bsize);
@ -693,48 +662,58 @@ static void setup_pred_probs(VP9_COMMON *pc, vp9_reader *r) {
}
}
static void setup_loopfilter(VP9_COMMON *pc, MACROBLOCKD *xd, vp9_reader *r) {
pc->filter_level = vp9_read_literal(r, 6);
pc->sharpness_level = vp9_read_literal(r, 3);
static void setup_loopfilter(VP9D_COMP *pbi, struct vp9_read_bit_buffer *rb) {
VP9_COMMON *const cm = &pbi->common;
MACROBLOCKD *const xd = &pbi->mb;
cm->filter_level = vp9_rb_read_literal(rb, 6);
cm->sharpness_level = vp9_rb_read_literal(rb, 3);
// Read in loop filter deltas applied at the MB level based on mode or ref
// frame.
xd->mode_ref_lf_delta_update = 0;
xd->mode_ref_lf_delta_enabled = vp9_read_bit(r);
xd->mode_ref_lf_delta_enabled = vp9_rb_read_bit(rb);
if (xd->mode_ref_lf_delta_enabled) {
xd->mode_ref_lf_delta_update = vp9_read_bit(r);
xd->mode_ref_lf_delta_update = vp9_rb_read_bit(rb);
if (xd->mode_ref_lf_delta_update) {
int i;
for (i = 0; i < MAX_REF_LF_DELTAS; i++) {
if (vp9_read_bit(r)) {
const int value = vp9_read_literal(r, 6);
xd->ref_lf_deltas[i] = vp9_read_and_apply_sign(r, value);
if (vp9_rb_read_bit(rb)) {
const int value = vp9_rb_read_literal(rb, 6);
xd->ref_lf_deltas[i] = vp9_rb_read_bit(rb) ? -value : value;
}
}
for (i = 0; i < MAX_MODE_LF_DELTAS; i++) {
if (vp9_read_bit(r)) {
const int value = vp9_read_literal(r, 6);
xd->mode_lf_deltas[i] = vp9_read_and_apply_sign(r, value);
if (vp9_rb_read_bit(rb)) {
const int value = vp9_rb_read_literal(rb, 6);
xd->mode_lf_deltas[i] = vp9_rb_read_bit(rb) ? -value : value;
}
}
}
}
}
static void setup_quantization(VP9D_COMP *pbi, vp9_reader *r) {
// Read the default quantizers
VP9_COMMON *const pc = &pbi->common;
static int read_delta_q(struct vp9_read_bit_buffer *rb, int *delta_q) {
const int old = *delta_q;
if (vp9_rb_read_bit(rb)) {
const int value = vp9_rb_read_literal(rb, 4);
*delta_q = vp9_rb_read_bit(rb) ? -value : value;
}
return old != *delta_q;
}
pc->base_qindex = vp9_read_literal(r, QINDEX_BITS);
if (get_delta_q(r, &pc->y_dc_delta_q) |
get_delta_q(r, &pc->uv_dc_delta_q) |
get_delta_q(r, &pc->uv_ac_delta_q))
vp9_init_dequantizer(pc);
mb_init_dequantizer(pc, &pbi->mb); // MB level dequantizer setup
static void setup_quantization(VP9D_COMP *pbi, struct vp9_read_bit_buffer *rb) {
VP9_COMMON *const cm = &pbi->common;
int update = 0;
cm->base_qindex = vp9_rb_read_literal(rb, QINDEX_BITS);
update |= read_delta_q(rb, &cm->y_dc_delta_q);
update |= read_delta_q(rb, &cm->uv_dc_delta_q);
update |= read_delta_q(rb, &cm->uv_ac_delta_q);
if (update)
vp9_init_dequantizer(cm);
}
static INTERPOLATIONFILTERTYPE read_mcomp_filter_type(vp9_reader *r) {
@ -966,6 +945,9 @@ size_t read_uncompressed_header(VP9D_COMP *pbi,
cm->frame_parallel_decoding_mode = 1;
}
setup_loopfilter(pbi, rb);
setup_quantization(pbi, rb);
return vp9_rb_read_literal(rb, 16);
}
@ -1008,9 +990,7 @@ int vp9_decode_frame(VP9D_COMP *pbi, const uint8_t **p_data_end) {
vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
"Failed to allocate bool decoder 0");
setup_loopfilter(pc, xd, &header_bc);
setup_quantization(pbi, &header_bc);
mb_init_dequantizer(pc, &pbi->mb); // MB level dequantizer setup
xd->lossless = pc->base_qindex == 0 &&
pc->y_dc_delta_q == 0 &&

76
vp9/encoder/vp9_bitstream.c
Просмотреть файл

@ -1205,20 +1205,21 @@ static void segment_reference_frames(VP9_COMP *cpi) {
}
}
static void encode_loopfilter(VP9_COMMON *pc, MACROBLOCKD *xd, vp9_writer *w) {
static void encode_loopfilter(VP9_COMMON *pc, MACROBLOCKD *xd,
struct vp9_write_bit_buffer *wb) {
int i;
// Encode the loop filter level and type
vp9_write_literal(w, pc->filter_level, 6);
vp9_write_literal(w, pc->sharpness_level, 3);
vp9_wb_write_literal(wb, pc->filter_level, 6);
vp9_wb_write_literal(wb, pc->sharpness_level, 3);
// Write out loop filter deltas applied at the MB level based on mode or
// ref frame (if they are enabled).
vp9_write_bit(w, xd->mode_ref_lf_delta_enabled);
vp9_wb_write_bit(wb, xd->mode_ref_lf_delta_enabled);
if (xd->mode_ref_lf_delta_enabled) {
// Do the deltas need to be updated
vp9_write_bit(w, xd->mode_ref_lf_delta_update);
vp9_wb_write_bit(wb, xd->mode_ref_lf_delta_update);
if (xd->mode_ref_lf_delta_update) {
// Send update
for (i = 0; i < MAX_REF_LF_DELTAS; i++) {
@ -1227,18 +1228,13 @@ static void encode_loopfilter(VP9_COMMON *pc, MACROBLOCKD *xd, vp9_writer *w) {
// Frame level data
if (delta != xd->last_ref_lf_deltas[i]) {
xd->last_ref_lf_deltas[i] = delta;
vp9_write_bit(w, 1);
vp9_wb_write_bit(wb, 1);
if (delta > 0) {
vp9_write_literal(w, delta & 0x3F, 6);
vp9_write_bit(w, 0); // sign
} else {
assert(delta < 0);
vp9_write_literal(w, (-delta) & 0x3F, 6);
vp9_write_bit(w, 1); // sign
}
assert(delta != 0);
vp9_wb_write_literal(wb, abs(delta) & 0x3F, 6);
vp9_wb_write_bit(wb, delta < 0);
} else {
vp9_write_bit(w, 0);
vp9_wb_write_bit(wb, 0);
}
}
@ -1247,39 +1243,35 @@ static void encode_loopfilter(VP9_COMMON *pc, MACROBLOCKD *xd, vp9_writer *w) {
const int delta = xd->mode_lf_deltas[i];
if (delta != xd->last_mode_lf_deltas[i]) {
xd->last_mode_lf_deltas[i] = delta;
vp9_write_bit(w, 1);
vp9_wb_write_bit(wb, 1);
if (delta > 0) {
vp9_write_literal(w, delta & 0x3F, 6);
vp9_write_bit(w, 0); // sign
} else {
assert(delta < 0);
vp9_write_literal(w, (-delta) & 0x3F, 6);
vp9_write_bit(w, 1); // sign
}
assert(delta != 0);
vp9_wb_write_literal(wb, abs(delta) & 0x3F, 6);
vp9_wb_write_bit(wb, delta < 0);
} else {
vp9_write_bit(w, 0);
vp9_wb_write_bit(wb, 0);
}
}
}
}
}
static void put_delta_q(vp9_writer *bc, int delta_q) {
static void write_delta_q(struct vp9_write_bit_buffer *wb, int delta_q) {
if (delta_q != 0) {
vp9_write_bit(bc, 1);
vp9_write_literal(bc, abs(delta_q), 4);
vp9_write_bit(bc, delta_q < 0);
vp9_wb_write_bit(wb, 1);
vp9_wb_write_literal(wb, abs(delta_q), 4);
vp9_wb_write_bit(wb, delta_q < 0);
} else {
vp9_write_bit(bc, 0);
vp9_wb_write_bit(wb, 0);
}
}
static void encode_quantization(VP9_COMMON *pc, vp9_writer *w) {
vp9_write_literal(w, pc->base_qindex, QINDEX_BITS);
put_delta_q(w, pc->y_dc_delta_q);
put_delta_q(w, pc->uv_dc_delta_q);
put_delta_q(w, pc->uv_ac_delta_q);
static void encode_quantization(VP9_COMMON *cm,
struct vp9_write_bit_buffer *wb) {
vp9_wb_write_literal(wb, cm->base_qindex, QINDEX_BITS);
write_delta_q(wb, cm->y_dc_delta_q);
write_delta_q(wb, cm->uv_dc_delta_q);
write_delta_q(wb, cm->uv_ac_delta_q);
}
@ -1399,8 +1391,11 @@ static void encode_txfm(VP9_COMP *cpi, vp9_writer *w) {
}
}
void write_uncompressed_header(VP9_COMMON *cm,
void write_uncompressed_header(VP9_COMP *cpi,
struct vp9_write_bit_buffer *wb) {
VP9_COMMON *const cm = &cpi->common;
MACROBLOCKD *const xd = &cpi->mb.e_mbd;
const int scaling_active = cm->width != cm->display_width ||
cm->height != cm->display_height;
@ -1438,6 +1433,9 @@ void write_uncompressed_header(VP9_COMMON *cm,
vp9_wb_write_bit(wb, cm->refresh_frame_context);
vp9_wb_write_bit(wb, cm->frame_parallel_decoding_mode);
}
encode_loopfilter(cm, xd, wb);
encode_quantization(cm, wb);
}
void vp9_pack_bitstream(VP9_COMP *cpi, uint8_t *dest, unsigned long *size) {
@ -1450,7 +1448,7 @@ void vp9_pack_bitstream(VP9_COMP *cpi, uint8_t *dest, unsigned long *size) {
struct vp9_write_bit_buffer wb = {dest, 0};
struct vp9_write_bit_buffer first_partition_size_wb;
write_uncompressed_header(pc, &wb);
write_uncompressed_header(cpi, &wb);
first_partition_size_wb = wb;
vp9_wb_write_literal(&wb, 0, 16); // don't know in advance first part. size
@ -1461,10 +1459,6 @@ void vp9_pack_bitstream(VP9_COMP *cpi, uint8_t *dest, unsigned long *size) {
vp9_start_encode(&header_bc, cx_data);
encode_loopfilter(pc, xd, &header_bc);
encode_quantization(pc, &header_bc);
// When there is a key frame all reference buffers are updated using the new key frame
if (pc->frame_type != KEY_FRAME) {
int refresh_mask;