Commit 8db5da29 authored by Yunqing Wang's avatar Yunqing Wang
Browse files

Adjust multi-thread sync ranges according to image sizes

In multi-threaded decoder, set different sync ranges for
different video resolutions.

Change-Id: Iea48fd36f51919e0152c8ed3b1f10e1b723c0ca7
parent 7fed3832
......@@ -96,6 +96,7 @@ typedef struct VP8Decompressor
// variable for threading
#if CONFIG_MULTITHREAD
int mt_baseline_filter_level[MAX_MB_SEGMENTS];
int sync_range;
int *mt_current_mb_col; // Each row remembers its already decoded column.
unsigned char **mt_yabove_row; // mb_rows x width
......
......@@ -257,6 +257,7 @@ THREAD_FUNCTION vp8_thread_decoding_proc(void *p_data)
int mb_row;
int num_part = 1 << pbi->common.multi_token_partition;
volatile int *last_row_current_mb_col;
int nsync = pbi->sync_range;
for (mb_row = ithread+1; mb_row < pc->mb_rows; mb_row += (pbi->decoding_thread_count + 1))
{
......@@ -292,9 +293,9 @@ THREAD_FUNCTION vp8_thread_decoding_proc(void *p_data)
for (mb_col = 0; mb_col < pc->mb_cols; mb_col++)
{
if ((mb_col & 7) == 0)
if ((mb_col & (nsync-1)) == 0)
{
while (mb_col > (*last_row_current_mb_col - 8) && *last_row_current_mb_col != pc->mb_cols - 1)
while (mb_col > (*last_row_current_mb_col - nsync) && *last_row_current_mb_col != pc->mb_cols - 1)
{
x86_pause_hint();
thread_sleep(0);
......@@ -608,6 +609,11 @@ int vp8mt_alloc_temp_buffers(VP8D_COMP *pbi, int width, int prev_mb_rows)
if ((width & 0xf) != 0)
width += 16 - (width & 0xf);
if (width < 640) pbi->sync_range = 1;
else if (width <= 1280) pbi->sync_range = 8;
else if (width <= 2560) pbi->sync_range =16;
else pbi->sync_range = 32;
uv_width = width >>1;
// Allocate an int for each mb row.
......@@ -764,6 +770,7 @@ void vp8mt_decode_mb_rows( VP8D_COMP *pbi, MACROBLOCKD *xd)
int num_part = 1 << pbi->common.multi_token_partition;
int i, j;
volatile int *last_row_current_mb_col = NULL;
int nsync = pbi->sync_range;
int filter_level;
loop_filter_info *lfi = pc->lf_info;
......@@ -832,8 +839,8 @@ void vp8mt_decode_mb_rows( VP8D_COMP *pbi, MACROBLOCKD *xd)
for (mb_col = 0; mb_col < pc->mb_cols; mb_col++)
{
if ( mb_row > 0 && (mb_col & 7) == 0){
while (mb_col > (*last_row_current_mb_col - 8) && *last_row_current_mb_col != pc->mb_cols - 1)
if ( mb_row > 0 && (mb_col & (nsync-1)) == 0){
while (mb_col > (*last_row_current_mb_col - nsync) && *last_row_current_mb_col != pc->mb_cols - 1)
{
x86_pause_hint();
thread_sleep(0);
......
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