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Commit a2375763 authored by Dmitry Kovalev's avatar Dmitry Kovalev
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Moving segmentation and tile info to uncompressed header. 

Change-Id: I0ca77329d882a2026f6c1941b8e447d86bc87bda
parent 26e24b1d
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Inline Side-by-side
vp9/decoder/vp9_decodframe.c
View file @ a2375763
......@@ -117,13 +117,8 @@ static int decode_term_subexp(vp9_reader *r, int k, int num_syms) {
return word;
}
static int decode_unsigned_max(vp9_reader *r, int max) {
int data = 0, bit = 0, lmax = max;
while (lmax) {
data |= vp9_read_bit(r) << bit++;
lmax >>= 1;
}
static int decode_unsigned_max(struct vp9_read_bit_buffer *rb, int max) {
const int data = vp9_rb_read_literal(rb, get_unsigned_bits(max));
return data > max ? max : data;
}
......@@ -566,65 +561,68 @@ static void read_coef_probs_common(FRAME_CONTEXT *fc, TX_SIZE tx_size,
}
static void read_coef_probs(VP9D_COMP *pbi, vp9_reader *r) {
const TXFM_MODE mode = pbi->common.txfm_mode;
const TXFM_MODE txfm_mode = pbi->common.txfm_mode;
FRAME_CONTEXT *const fc = &pbi->common.fc;
read_coef_probs_common(fc, TX_4X4, r);
if (mode > ONLY_4X4)
if (txfm_mode > ONLY_4X4)
read_coef_probs_common(fc, TX_8X8, r);
if (mode > ALLOW_8X8)
if (txfm_mode > ALLOW_8X8)
read_coef_probs_common(fc, TX_16X16, r);
if (mode > ALLOW_16X16)
if (txfm_mode > ALLOW_16X16)
read_coef_probs_common(fc, TX_32X32, r);
}
static void setup_segmentation(VP9_COMMON *pc, MACROBLOCKD *xd, vp9_reader *r) {
static void setup_segmentation(VP9D_COMP *pbi, struct vp9_read_bit_buffer *rb) {
int i, j;
VP9_COMMON *const cm = &pbi->common;
MACROBLOCKD *const xd = &pbi->mb;
xd->update_mb_segmentation_map = 0;
xd->update_mb_segmentation_data = 0;
xd->segmentation_enabled = vp9_read_bit(r);
xd->segmentation_enabled = vp9_rb_read_bit(rb);
if (!xd->segmentation_enabled)
return;
// Segmentation map update
xd->update_mb_segmentation_map = vp9_read_bit(r);
xd->update_mb_segmentation_map = vp9_rb_read_bit(rb);
if (xd->update_mb_segmentation_map) {
for (i = 0; i < MB_SEG_TREE_PROBS; i++)
xd->mb_segment_tree_probs[i] = vp9_read_bit(r) ? vp9_read_prob(r)
: MAX_PROB;
xd->mb_segment_tree_probs[i] = vp9_rb_read_bit(rb) ?
vp9_rb_read_literal(rb, 8) : MAX_PROB;
pc->temporal_update = vp9_read_bit(r);
if (pc->temporal_update) {
cm->temporal_update = vp9_rb_read_bit(rb);
if (cm->temporal_update) {
for (i = 0; i < PREDICTION_PROBS; i++)
pc->segment_pred_probs[i] = vp9_read_bit(r) ? vp9_read_prob(r)
: MAX_PROB;
cm->segment_pred_probs[i] = vp9_rb_read_bit(rb) ?
vp9_rb_read_literal(rb, 8) : MAX_PROB;
} else {
for (i = 0; i < PREDICTION_PROBS; i++)
pc->segment_pred_probs[i] = MAX_PROB;
cm->segment_pred_probs[i] = MAX_PROB;
}
}
// Segmentation data update
xd->update_mb_segmentation_data = vp9_read_bit(r);
xd->update_mb_segmentation_data = vp9_rb_read_bit(rb);
if (xd->update_mb_segmentation_data) {
xd->mb_segment_abs_delta = vp9_read_bit(r);
xd->mb_segment_abs_delta = vp9_rb_read_bit(rb);
vp9_clearall_segfeatures(xd);
for (i = 0; i < MAX_MB_SEGMENTS; i++) {
for (j = 0; j < SEG_LVL_MAX; j++) {
int data = 0;
const int feature_enabled = vp9_read_bit(r);
const int feature_enabled = vp9_rb_read_bit(rb);
if (feature_enabled) {
vp9_enable_segfeature(xd, i, j);
data = decode_unsigned_max(r, vp9_seg_feature_data_max(j));
data = decode_unsigned_max(rb, vp9_seg_feature_data_max(j));
if (vp9_is_segfeature_signed(j))
data = vp9_read_and_apply_sign(r, data);
data = vp9_rb_read_bit(rb) ? -data : data;
}
vp9_set_segdata(xd, i, j, data);
}
......@@ -676,14 +674,30 @@ static int read_delta_q(struct vp9_read_bit_buffer *rb, int *delta_q) {
}
static void setup_quantization(VP9D_COMP *pbi, struct vp9_read_bit_buffer *rb) {
MACROBLOCKD *const xd = &pbi->mb;
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);
xd->lossless = cm->base_qindex == 0 &&
cm->y_dc_delta_q == 0 &&
cm->uv_dc_delta_q == 0 &&
cm->uv_ac_delta_q == 0;
if (xd->lossless) {
xd->itxm_add = vp9_idct_add_lossless_c;
xd->itxm_add_y_block = vp9_idct_add_y_block_lossless_c;
xd->itxm_add_uv_block = vp9_idct_add_uv_block_lossless_c;
} else {
xd->itxm_add = vp9_idct_add;
xd->itxm_add_y_block = vp9_idct_add_y_block;
xd->itxm_add_uv_block = vp9_idct_add_uv_block;
}
}
static INTERPOLATIONFILTERTYPE read_interp_filter_type(
......@@ -787,27 +801,33 @@ static void decode_tile(VP9D_COMP *pbi, vp9_reader *r) {
}
}
static void decode_tiles(VP9D_COMP *pbi,
const uint8_t *data, int first_partition_size,
vp9_reader *header_bc, vp9_reader *residual_bc) {
VP9_COMMON *const pc = &pbi->common;
const uint8_t *data_ptr = data + first_partition_size;
int tile_row, tile_col, delta_log2_tiles;
static void setup_tile_info(VP9_COMMON *cm, struct vp9_read_bit_buffer *rb) {
int delta_log2_tiles;
vp9_get_tile_n_bits(pc, &pc->log2_tile_columns, &delta_log2_tiles);
vp9_get_tile_n_bits(cm, &cm->log2_tile_columns, &delta_log2_tiles);
while (delta_log2_tiles--) {
if (vp9_read_bit(header_bc)) {
pc->log2_tile_columns++;
if (vp9_rb_read_bit(rb)) {
cm->log2_tile_columns++;
} else {
break;
}
}
pc->log2_tile_rows = vp9_read_bit(header_bc);
if (pc->log2_tile_rows)
pc->log2_tile_rows += vp9_read_bit(header_bc);
pc->tile_columns = 1 << pc->log2_tile_columns;
pc->tile_rows = 1 << pc->log2_tile_rows;
cm->log2_tile_rows = vp9_rb_read_bit(rb);
if (cm->log2_tile_rows)
cm->log2_tile_rows += vp9_rb_read_bit(rb);
cm->tile_columns = 1 << cm->log2_tile_columns;
cm->tile_rows = 1 << cm->log2_tile_rows;
}
static void decode_tiles(VP9D_COMP *pbi,
const uint8_t *data, size_t first_partition_size,
vp9_reader *residual_bc) {
VP9_COMMON *const pc = &pbi->common;
const uint8_t *data_ptr = data + first_partition_size;
int tile_row, tile_col;
// Note: this memset assumes above_context[0], [1] and [2]
// are allocated as part of the same buffer.
......@@ -955,6 +975,9 @@ size_t read_uncompressed_header(VP9D_COMP *pbi,
setup_loopfilter(pbi, rb);
setup_quantization(pbi, rb);
setup_segmentation(pbi, rb);
setup_tile_info(cm, rb);
return vp9_rb_read_literal(rb, 16);
}
......@@ -999,27 +1022,11 @@ int vp9_decode_frame(VP9D_COMP *pbi, const uint8_t **p_data_end) {
mb_init_dequantizer(pc, &pbi->mb); // MB level dequantizer setup
xd->lossless = pc->base_qindex == 0 &&
pc->y_dc_delta_q == 0 &&
pc->uv_dc_delta_q == 0 &&
pc->uv_ac_delta_q == 0;
if (xd->lossless) {
xd->itxm_add = vp9_idct_add_lossless_c;
xd->itxm_add_y_block = vp9_idct_add_y_block_lossless_c;
xd->itxm_add_uv_block = vp9_idct_add_uv_block_lossless_c;
} else {
xd->itxm_add = vp9_idct_add;
xd->itxm_add_y_block = vp9_idct_add_y_block;
xd->itxm_add_uv_block = vp9_idct_add_uv_block;
}
if (!keyframe)
vp9_setup_interp_filters(xd, pc->mcomp_filter_type, pc);
pc->fc = pc->frame_contexts[pc->frame_context_idx];
setup_segmentation(pc, xd, &header_bc);
setup_txfm_mode(pc, xd->lossless, &header_bc);
update_frame_context(&pc->fc);
......@@ -1046,7 +1053,7 @@ int vp9_decode_frame(VP9D_COMP *pbi, const uint8_t **p_data_end) {
vp9_decode_mode_mvs_init(pbi, &header_bc);
decode_tiles(pbi, data, first_partition_size, &header_bc, &residual_bc);
decode_tiles(pbi, data, first_partition_size, &residual_bc);
pc->last_width = pc->width;
pc->last_height = pc->height;
......
vp9/encoder/vp9_bitstream.c
View file @ a2375763
......@@ -60,14 +60,7 @@ static INLINE void write_le32(uint8_t *p, int value) {
p[3] = value >> 24;
}
void vp9_encode_unsigned_max(vp9_writer *br, int data, int max) {
assert(data <= max);
while (max) {
vp9_write_bit(br, data & 1);
data >>= 1;
max >>= 1;
}
}
int recenter_nonneg(int v, int m) {
if (v > (m << 1))
......@@ -88,6 +81,11 @@ static int get_unsigned_bits(unsigned num_values) {
return cat;
}
void vp9_encode_unsigned_max(struct vp9_write_bit_buffer *wb,
int data, int max) {
vp9_wb_write_literal(wb, data, get_unsigned_bits(max));
}
void encode_uniform(vp9_writer *w, int v, int n) {
int l = get_unsigned_bits(n);
int m;
......@@ -1259,73 +1257,63 @@ static void encode_quantization(VP9_COMMON *cm,
}
static void encode_segmentation(VP9_COMP *cpi, vp9_writer *w) {
static void encode_segmentation(VP9_COMP *cpi,
struct vp9_write_bit_buffer *wb) {
int i, j;
VP9_COMMON *const pc = &cpi->common;
VP9_COMMON *const cm = &cpi->common;
MACROBLOCKD *const xd = &cpi->mb.e_mbd;
vp9_write_bit(w, xd->segmentation_enabled);
vp9_wb_write_bit(wb, xd->segmentation_enabled);
if (!xd->segmentation_enabled)
return;
// Segmentation map
vp9_write_bit(w, xd->update_mb_segmentation_map);
vp9_wb_write_bit(wb, xd->update_mb_segmentation_map);
if (xd->update_mb_segmentation_map) {
// Select the coding strategy (temporal or spatial)
vp9_choose_segmap_coding_method(cpi);
// Write out probabilities used to decode unpredicted macro-block segments
for (i = 0; i < MB_SEG_TREE_PROBS; i++) {
const int prob = xd->mb_segment_tree_probs[i];
if (prob != MAX_PROB) {
vp9_write_bit(w, 1);
vp9_write_prob(w, prob);
} else {
vp9_write_bit(w, 0);
}
const int update = prob != MAX_PROB;
vp9_wb_write_bit(wb, update);
if (update)
vp9_wb_write_literal(wb, prob, 8);
}
// Write out the chosen coding method.
vp9_write_bit(w, pc->temporal_update);
if (pc->temporal_update) {
vp9_wb_write_bit(wb, cm->temporal_update);
if (cm->temporal_update) {
for (i = 0; i < PREDICTION_PROBS; i++) {
const int prob = pc->segment_pred_probs[i];
if (prob != MAX_PROB) {
vp9_write_bit(w, 1);
vp9_write_prob(w, prob);
} else {
vp9_write_bit(w, 0);
}
const int prob = cm->segment_pred_probs[i];
const int update = prob != MAX_PROB;
vp9_wb_write_bit(wb, update);
if (update)
vp9_wb_write_literal(wb, prob, 8);
}
}
}
// Segmentation data
vp9_write_bit(w, xd->update_mb_segmentation_data);
vp9_wb_write_bit(wb, xd->update_mb_segmentation_data);
// segment_reference_frames(cpi);
if (xd->update_mb_segmentation_data) {
vp9_write_bit(w, xd->mb_segment_abs_delta);
vp9_wb_write_bit(wb, xd->mb_segment_abs_delta);
for (i = 0; i < MAX_MB_SEGMENTS; i++) {
for (j = 0; j < SEG_LVL_MAX; j++) {
const int data = vp9_get_segdata(xd, i, j);
const int data_max = vp9_seg_feature_data_max(j);
if (vp9_segfeature_active(xd, i, j)) {
vp9_write_bit(w, 1);
const int active = vp9_segfeature_active(xd, i, j);
vp9_wb_write_bit(wb, active);
if (active) {
const int data = vp9_get_segdata(xd, i, j);
const int data_max = vp9_seg_feature_data_max(j);
if (vp9_is_segfeature_signed(j)) {
if (data < 0) {
vp9_encode_unsigned_max(w, -data, data_max);
vp9_write_bit(w, 1);
} else {
vp9_encode_unsigned_max(w, data, data_max);
vp9_write_bit(w, 0);
}
vp9_encode_unsigned_max(wb, abs(data), data_max);
vp9_wb_write_bit(wb, data < 0);
} else {
vp9_encode_unsigned_max(w, data, data_max);
vp9_encode_unsigned_max(wb, data, data_max);
}
} else {
vp9_write_bit(w, 0);
}
}
}
......@@ -1407,6 +1395,24 @@ static void fix_mcomp_filter_type(VP9_COMP *cpi) {
}
}
static void write_tile_info(VP9_COMMON *cm, struct vp9_write_bit_buffer *wb) {
int min_log2_tiles, delta_log2_tiles, n_tile_bits, n;
vp9_get_tile_n_bits(cm, &min_log2_tiles, &delta_log2_tiles);
n_tile_bits = cm->log2_tile_columns - min_log2_tiles;
for (n = 0; n < delta_log2_tiles; n++) {
if (n_tile_bits--) {
vp9_wb_write_bit(wb, 1);
} else {
vp9_wb_write_bit(wb, 0);
break;
}
}
vp9_wb_write_bit(wb, cm->log2_tile_rows != 0);
if (cm->log2_tile_rows != 0)
vp9_wb_write_bit(wb, cm->log2_tile_rows != 1);
}
void write_uncompressed_header(VP9_COMP *cpi,
struct vp9_write_bit_buffer *wb) {
VP9_COMMON *const cm = &cpi->common;
......@@ -1515,6 +1521,9 @@ void write_uncompressed_header(VP9_COMP *cpi,
encode_loopfilter(cm, xd, wb);
encode_quantization(cm, wb);
encode_segmentation(cpi, wb);
write_tile_info(cm, wb);
}
void vp9_pack_bitstream(VP9_COMP *cpi, uint8_t *dest, unsigned long *size) {
......@@ -1545,8 +1554,6 @@ void vp9_pack_bitstream(VP9_COMP *cpi, uint8_t *dest, unsigned long *size) {
active_section = 7;
#endif
encode_segmentation(cpi, &header_bc);
if (xd->lossless)
pc->txfm_mode = ONLY_4X4;
else
......@@ -1621,24 +1628,6 @@ void vp9_pack_bitstream(VP9_COMP *cpi, uint8_t *dest, unsigned long *size) {
vp9_write_nmv_probs(cpi, xd->allow_high_precision_mv, &header_bc);
}
/* tiling */
{
int min_log2_tiles, delta_log2_tiles, n_tile_bits, n;
vp9_get_tile_n_bits(pc, &min_log2_tiles, &delta_log2_tiles);
n_tile_bits = pc->log2_tile_columns - min_log2_tiles;
for (n = 0; n < delta_log2_tiles; n++) {
if (n_tile_bits--) {
vp9_write_bit(&header_bc, 1);
} else {
vp9_write_bit(&header_bc, 0);
break;
}
}
vp9_write_bit(&header_bc, pc->log2_tile_rows != 0);
if (pc->log2_tile_rows != 0)
vp9_write_bit(&header_bc, pc->log2_tile_rows != 1);
}
vp9_stop_encode(&header_bc);
......
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