Commit 2c317298 authored by Dmitry Kovalev's avatar Dmitry Kovalev

Code cleanup inside vp9_decodeframe.c.

Removing unused DEC_DEBUG define and dec_debug variable. Changing function
signatures to eliminate code duplication, renaming function
mb_init_dequantizer to init_dequantizer. Also removing redundant curly
braces, and comments.


Change-Id: Ia56ee1b0be5f24abb0e878581845be8a4773c298
parent faff6ed0
......@@ -34,19 +34,12 @@
#include "vp9/decoder/vp9_onyxd_int.h"
#include "vp9/decoder/vp9_read_bit_buffer.h"
// #define DEC_DEBUG
#ifdef DEC_DEBUG
int dec_debug = 0;
#endif
static int read_be32(const uint8_t *p) {
return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
}
// len == 0 is not allowed
static int read_is_valid(const uint8_t *start, size_t len,
const uint8_t *end) {
static int read_is_valid(const uint8_t *start, size_t len, const uint8_t *end) {
return start + len > start && start + len <= end;
}
......@@ -62,33 +55,33 @@ static TXFM_MODE read_tx_mode(vp9_reader *r) {
return txfm_mode;
}
static void read_tx_probs(FRAME_CONTEXT *fc, vp9_reader *r) {
static void read_tx_probs(struct tx_probs *tx_probs, vp9_reader *r) {
int i, j;
for (i = 0; i < TX_SIZE_CONTEXTS; ++i)
for (j = 0; j < TX_SIZE_MAX_SB - 3; ++j)
if (vp9_read(r, VP9_MODE_UPDATE_PROB))
vp9_diff_update_prob(r, &fc->tx_probs.p8x8[i][j]);
vp9_diff_update_prob(r, &tx_probs->p8x8[i][j]);
for (i = 0; i < TX_SIZE_CONTEXTS; ++i)
for (j = 0; j < TX_SIZE_MAX_SB - 2; ++j)
if (vp9_read(r, VP9_MODE_UPDATE_PROB))
vp9_diff_update_prob(r, &fc->tx_probs.p16x16[i][j]);
vp9_diff_update_prob(r, &tx_probs->p16x16[i][j]);
for (i = 0; i < TX_SIZE_CONTEXTS; ++i)
for (j = 0; j < TX_SIZE_MAX_SB - 1; ++j)
if (vp9_read(r, VP9_MODE_UPDATE_PROB))
vp9_diff_update_prob(r, &fc->tx_probs.p32x32[i][j]);
vp9_diff_update_prob(r, &tx_probs->p32x32[i][j]);
}
static void mb_init_dequantizer(VP9_COMMON *pc, MACROBLOCKD *xd) {
static void init_dequantizer(VP9_COMMON *cm, MACROBLOCKD *xd) {
int i;
const int segment_id = xd->mode_info_context->mbmi.segment_id;
xd->q_index = vp9_get_qindex(xd, segment_id, pc->base_qindex);
xd->q_index = vp9_get_qindex(xd, segment_id, cm->base_qindex);
xd->plane[0].dequant = pc->y_dequant[xd->q_index];
xd->plane[0].dequant = cm->y_dequant[xd->q_index];
for (i = 1; i < MAX_MB_PLANE; i++)
xd->plane[i].dequant = pc->uv_dequant[xd->q_index];
xd->plane[i].dequant = cm->uv_dequant[xd->q_index];
}
static void decode_block(int plane, int block, BLOCK_SIZE_TYPE bsize,
......@@ -175,7 +168,7 @@ static int decode_tokens(VP9D_COMP *pbi, BLOCK_SIZE_TYPE bsize, vp9_reader *r) {
return -1;
} else {
if (xd->seg.enabled)
mb_init_dequantizer(&pbi->common, xd);
init_dequantizer(&pbi->common, xd);
// TODO(dkovalev) if (!vp9_reader_has_error(r))
return vp9_decode_tokens(pbi, r, bsize);
......@@ -288,11 +281,10 @@ static void decode_modes_sb(VP9D_COMP *pbi, int mi_row, int mi_col,
if (mi_row >= pc->mi_rows || mi_col >= pc->mi_cols)
return;
if (bsize < BLOCK_SIZE_SB8X8)
if (bsize < BLOCK_SIZE_SB8X8) {
if (xd->ab_index != 0)
return;
if (bsize >= BLOCK_SIZE_SB8X8) {
} else {
int pl;
const int idx = check_bsize_coverage(pc, xd, mi_row, mi_col, bsize);
set_partition_seg_context(pc, xd, mi_row, mi_col);
......@@ -337,8 +329,9 @@ static void decode_modes_sb(VP9D_COMP *pbi, int mi_row, int mi_col,
}
break;
default:
assert(0);
assert(!"Invalid partition type");
}
// update partition context
if (bsize >= BLOCK_SIZE_SB8X8 &&
(bsize == BLOCK_SIZE_SB8X8 || partition != PARTITION_SPLIT)) {
......@@ -365,9 +358,8 @@ static void setup_token_decoder(VP9D_COMP *pbi,
"Failed to allocate bool decoder %d", 1);
}
static void read_coef_probs_common(FRAME_CONTEXT *fc, TX_SIZE tx_size,
static void read_coef_probs_common(vp9_coeff_probs_model *coef_probs,
vp9_reader *r) {
vp9_coeff_probs_model *coef_probs = fc->coef_probs[tx_size];
int i, j, k, l, m;
if (vp9_read_bit(r))
......@@ -383,16 +375,16 @@ static void read_coef_probs_common(FRAME_CONTEXT *fc, TX_SIZE tx_size,
static void read_coef_probs(FRAME_CONTEXT *fc, TXFM_MODE txfm_mode,
vp9_reader *r) {
read_coef_probs_common(fc, TX_4X4, r);
read_coef_probs_common(fc->coef_probs[TX_4X4], r);
if (txfm_mode > ONLY_4X4)
read_coef_probs_common(fc, TX_8X8, r);
read_coef_probs_common(fc->coef_probs[TX_8X8], r);
if (txfm_mode > ALLOW_8X8)
read_coef_probs_common(fc, TX_16X16, r);
read_coef_probs_common(fc->coef_probs[TX_16X16], r);
if (txfm_mode > ALLOW_16X16)
read_coef_probs_common(fc, TX_32X32, r);
read_coef_probs_common(fc->coef_probs[TX_32X32], r);
}
static void setup_segmentation(struct segmentation *seg,
......@@ -760,10 +752,9 @@ static void setup_inter_inter(VP9_COMMON *cm) {
int i;
cm->allow_comp_inter_inter = 0;
for (i = 0; i < ALLOWED_REFS_PER_FRAME; ++i) {
cm->allow_comp_inter_inter |= i > 0 &&
for (i = 1; i < ALLOWED_REFS_PER_FRAME; ++i)
cm->allow_comp_inter_inter |=
cm->ref_frame_sign_bias[i + 1] != cm->ref_frame_sign_bias[1];
}
if (cm->allow_comp_inter_inter) {
// which one is always-on in comp inter-inter?
......@@ -915,7 +906,7 @@ static int read_compressed_header(VP9D_COMP *pbi, const uint8_t *data,
cm->txfm_mode = xd->lossless ? ONLY_4X4 : read_tx_mode(&r);
if (cm->txfm_mode == TX_MODE_SELECT)
read_tx_probs(&cm->fc, &r);
read_tx_probs(&cm->fc.tx_probs, &r);
read_coef_probs(&cm->fc, cm->txfm_mode, &r);
vp9_prepare_read_mode_info(pbi, &r);
......@@ -923,17 +914,15 @@ static int read_compressed_header(VP9D_COMP *pbi, const uint8_t *data,
return vp9_reader_has_error(&r);
}
void vp9_init_dequantizer(VP9_COMMON *pc) {
void vp9_init_dequantizer(VP9_COMMON *cm) {
int q;
for (q = 0; q < QINDEX_RANGE; q++) {
// DC value
pc->y_dequant[q][0] = vp9_dc_quant(q, pc->y_dc_delta_q);
pc->uv_dequant[q][0] = vp9_dc_quant(q, pc->uv_dc_delta_q);
cm->y_dequant[q][0] = vp9_dc_quant(q, cm->y_dc_delta_q);
cm->y_dequant[q][1] = vp9_ac_quant(q, 0);
// AC values
pc->y_dequant[q][1] = vp9_ac_quant(q, 0);
pc->uv_dequant[q][1] = vp9_ac_quant(q, pc->uv_ac_delta_q);
cm->uv_dequant[q][0] = vp9_dc_quant(q, cm->uv_dc_delta_q);
cm->uv_dequant[q][1] = vp9_ac_quant(q, cm->uv_ac_delta_q);
}
}
......@@ -973,7 +962,7 @@ int vp9_decode_frame(VP9D_COMP *pbi, const uint8_t **p_data_end) {
xd->frame_type = pc->frame_type;
xd->mode_info_stride = pc->mode_info_stride;
mb_init_dequantizer(pc, &pbi->mb); // MB level dequantizer setup
init_dequantizer(pc, &pbi->mb);
if (!keyframe)
vp9_setup_interp_filters(xd, pc->mcomp_filter_type, pc);
......@@ -1017,11 +1006,10 @@ int vp9_decode_frame(VP9D_COMP *pbi, const uint8_t **p_data_end) {
"A stream must start with a complete key frame");
}
// Adaptation
if (!pc->error_resilient_mode && !pc->frame_parallel_decoding_mode) {
vp9_adapt_coef_probs(pc);
if ((!keyframe) && (!pc->intra_only)) {
if (!keyframe && !pc->intra_only) {
vp9_adapt_mode_probs(pc);
vp9_adapt_mode_context(pc);
vp9_adapt_mv_probs(pc, xd->allow_high_precision_mv);
......
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