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Merge "Unifying tile decoding for both direct and inverse tile order."

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This commit is contained in:
Dmitry Kovalev
2013-11-08 10:59:02 -08:00
committed by Gerrit Code Review
parent 283427c053 672ba3ddf5
commit 614effc0f6
1 changed files with 46 additions and 55 deletions
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101
vp9/decoder/vp9_decodframe.c
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@@ -874,77 +874,68 @@ static size_t get_tile(const uint8_t *const data_end,
return size;
}
static const uint8_t *decode_tiles(VP9D_COMP *pbi, const uint8_t *data) {
vp9_reader residual_bc;
typedef struct TileBuffer {
const uint8_t *data;
size_t size;
} TileBuffer;
static const uint8_t *decode_tiles(VP9D_COMP *pbi, const uint8_t *data) {
VP9_COMMON *const cm = &pbi->common;
MACROBLOCKD *const xd = &pbi->mb;
const uint8_t *const data_end = pbi->source + pbi->source_sz;
const int aligned_mi_cols = mi_cols_aligned_to_sb(cm->mi_cols);
const int aligned_cols = mi_cols_aligned_to_sb(cm->mi_cols);
const int tile_cols = 1 << cm->log2_tile_cols;
const int tile_rows = 1 << cm->log2_tile_rows;
TileBuffer tile_buffers[4][1 << 6];
int tile_row, tile_col;
const uint8_t *const data_end = pbi->source + pbi->source_sz;
const uint8_t *end = NULL;
vp9_reader r;
assert(tile_rows < 4);
assert(tile_cols < (1 << 6));
// Note: this memset assumes above_context[0], [1] and [2]
// are allocated as part of the same buffer.
vpx_memset(pbi->above_context[0], 0,
sizeof(*pbi->above_context[0]) * MAX_MB_PLANE *
2 * aligned_mi_cols);
sizeof(*pbi->above_context[0]) * MAX_MB_PLANE * 2 * aligned_cols);
vpx_memset(pbi->above_seg_context, 0,
sizeof(*pbi->above_seg_context) * aligned_mi_cols);
sizeof(*pbi->above_seg_context) * aligned_cols);
if (pbi->oxcf.inv_tile_order) {
const uint8_t *data_ptr2[4][1 << 6];
vp9_reader bc_bak = {0};
// pre-initialize the offsets, we're going to decode in inverse order
data_ptr2[0][0] = data;
for (tile_row = 0; tile_row < tile_rows; tile_row++) {
for (tile_col = 0; tile_col < tile_cols; tile_col++) {
const int last_tile =
tile_row == tile_rows - 1 && tile_col == tile_cols - 1;
const size_t size = get_tile(data_end, last_tile, &cm->error, &data);
data_ptr2[tile_row][tile_col] = data;
data += size;
}
}
for (tile_row = 0; tile_row < tile_rows; tile_row++) {
for (tile_col = tile_cols - 1; tile_col >= 0; tile_col--) {
TileInfo tile;
vp9_tile_init(&tile, cm, tile_row, tile_col);
setup_token_decoder(data_ptr2[tile_row][tile_col], data_end,
data_end - data_ptr2[tile_row][tile_col],
&cm->error, &residual_bc);
setup_tile_context(pbi, xd, tile_col);
decode_tile(pbi, &tile, &residual_bc);
if (tile_row == tile_rows - 1 && tile_col == tile_cols - 1)
bc_bak = residual_bc;
}
}
residual_bc = bc_bak;
} else {
for (tile_row = 0; tile_row < tile_rows; tile_row++) {
for (tile_col = 0; tile_col < tile_cols; tile_col++) {
const int last_tile =
tile_row == tile_rows - 1 && tile_col == tile_cols - 1;
const size_t size = get_tile(data_end, last_tile, &cm->error, &data);
TileInfo tile;
vp9_tile_init(&tile, cm, tile_row, tile_col);
setup_token_decoder(data, data_end, size, &cm->error, &residual_bc);
setup_tile_context(pbi, xd, tile_col);
decode_tile(pbi, &tile, &residual_bc);
data += size;
}
// Load tile data into tile_buffers
for (tile_row = 0; tile_row < tile_rows; ++tile_row) {
for (tile_col = 0; tile_col < tile_cols; ++tile_col) {
const int last_tile = tile_row == tile_rows - 1 &&
tile_col == tile_cols - 1;
const size_t size = get_tile(data_end, last_tile, &cm->error, &data);
TileBuffer *const buf = &tile_buffers[tile_row][tile_col];
buf->data = data;
buf->size = size;
data += size;
}
}
return vp9_reader_find_end(&residual_bc);
// Decode tiles using data from tile_buffers
for (tile_row = 0; tile_row < tile_rows; ++tile_row) {
for (tile_col = 0; tile_col < tile_cols; ++tile_col) {
const int col = pbi->oxcf.inv_tile_order ? tile_cols - tile_col - 1
: tile_col;
const int last_tile = tile_row == tile_rows - 1 &&
col == tile_cols - 1;
const TileBuffer *const buf = &tile_buffers[tile_row][col];
TileInfo tile;
vp9_tile_init(&tile, cm, tile_row, col);
setup_token_decoder(buf->data, data_end, buf->size, &cm->error, &r);
setup_tile_context(pbi, xd, col);
decode_tile(pbi, &tile, &r);
if (last_tile)
end = vp9_reader_find_end(&r);
}
}
return end;
}
static int tile_worker_hook(void *arg1, void *arg2) {