[FFmpeg-cvslog] hevc: Split the struct setup from the pps parsing
Luca Barbato
git at videolan.org
Wed Jul 15 21:29:02 CEST 2015
ffmpeg | branch: master | Luca Barbato <lu_zero at gentoo.org> | Tue Jul 14 12:31:15 2015 +0200| [c88c5eef53ff1619724ba47b722da64ec0593dab] | committer: Luca Barbato
hevc: Split the struct setup from the pps parsing
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c88c5eef53ff1619724ba47b722da64ec0593dab
---
libavcodec/hevc_ps.c | 258 +++++++++++++++++++++++++-------------------------
1 file changed, 131 insertions(+), 127 deletions(-)
diff --git a/libavcodec/hevc_ps.c b/libavcodec/hevc_ps.c
index a5a2ace..62f20c7 100644
--- a/libavcodec/hevc_ps.c
+++ b/libavcodec/hevc_ps.c
@@ -1039,14 +1039,139 @@ static void hevc_pps_free(void *opaque, uint8_t *data)
av_freep(&pps);
}
+static inline int setup_pps(AVCodecContext *avctx, GetBitContext *gb,
+ HEVCPPS *pps, HEVCSPS *sps)
+{
+ int log2_diff;
+ int pic_area_in_ctbs, pic_area_in_min_tbs;
+ int i, j, x, y, ctb_addr_rs, tile_id;
+
+ // Inferred parameters
+ pps->col_bd = av_malloc_array(pps->num_tile_columns + 1, sizeof(*pps->col_bd));
+ pps->row_bd = av_malloc_array(pps->num_tile_rows + 1, sizeof(*pps->row_bd));
+ pps->col_idxX = av_malloc_array(sps->ctb_width, sizeof(*pps->col_idxX));
+ if (!pps->col_bd || !pps->row_bd || !pps->col_idxX)
+ return AVERROR(ENOMEM);
+
+ if (pps->uniform_spacing_flag) {
+ if (!pps->column_width) {
+ pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
+ pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
+ }
+ if (!pps->column_width || !pps->row_height)
+ return AVERROR(ENOMEM);
+
+ for (i = 0; i < pps->num_tile_columns; i++) {
+ pps->column_width[i] = ((i + 1) * sps->ctb_width) / pps->num_tile_columns -
+ (i * sps->ctb_width) / pps->num_tile_columns;
+ }
+
+ for (i = 0; i < pps->num_tile_rows; i++) {
+ pps->row_height[i] = ((i + 1) * sps->ctb_height) / pps->num_tile_rows -
+ (i * sps->ctb_height) / pps->num_tile_rows;
+ }
+ }
+
+ pps->col_bd[0] = 0;
+ for (i = 0; i < pps->num_tile_columns; i++)
+ pps->col_bd[i + 1] = pps->col_bd[i] + pps->column_width[i];
+
+ pps->row_bd[0] = 0;
+ for (i = 0; i < pps->num_tile_rows; i++)
+ pps->row_bd[i + 1] = pps->row_bd[i] + pps->row_height[i];
+
+ for (i = 0, j = 0; i < sps->ctb_width; i++) {
+ if (i > pps->col_bd[j])
+ j++;
+ pps->col_idxX[i] = j;
+ }
+
+ /**
+ * 6.5
+ */
+ pic_area_in_ctbs = sps->ctb_width * sps->ctb_height;
+ pic_area_in_min_tbs = sps->min_tb_width * sps->min_tb_height;
+
+ pps->ctb_addr_rs_to_ts = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_rs_to_ts));
+ pps->ctb_addr_ts_to_rs = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_ts_to_rs));
+ pps->tile_id = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->tile_id));
+ pps->min_tb_addr_zs = av_malloc_array(pic_area_in_min_tbs, sizeof(*pps->min_tb_addr_zs));
+ if (!pps->ctb_addr_rs_to_ts || !pps->ctb_addr_ts_to_rs ||
+ !pps->tile_id || !pps->min_tb_addr_zs) {
+ return AVERROR(ENOMEM);
+ }
+
+ for (ctb_addr_rs = 0; ctb_addr_rs < pic_area_in_ctbs; ctb_addr_rs++) {
+ int tb_x = ctb_addr_rs % sps->ctb_width;
+ int tb_y = ctb_addr_rs / sps->ctb_width;
+ int tile_x = 0;
+ int tile_y = 0;
+ int val = 0;
+
+ for (i = 0; i < pps->num_tile_columns; i++) {
+ if (tb_x < pps->col_bd[i + 1]) {
+ tile_x = i;
+ break;
+ }
+ }
+
+ for (i = 0; i < pps->num_tile_rows; i++) {
+ if (tb_y < pps->row_bd[i + 1]) {
+ tile_y = i;
+ break;
+ }
+ }
+
+ for (i = 0; i < tile_x; i++)
+ val += pps->row_height[tile_y] * pps->column_width[i];
+ for (i = 0; i < tile_y; i++)
+ val += sps->ctb_width * pps->row_height[i];
+
+ val += (tb_y - pps->row_bd[tile_y]) * pps->column_width[tile_x] +
+ tb_x - pps->col_bd[tile_x];
+
+ pps->ctb_addr_rs_to_ts[ctb_addr_rs] = val;
+ pps->ctb_addr_ts_to_rs[val] = ctb_addr_rs;
+ }
+
+ for (j = 0, tile_id = 0; j < pps->num_tile_rows; j++)
+ for (i = 0; i < pps->num_tile_columns; i++, tile_id++)
+ for (y = pps->row_bd[j]; y < pps->row_bd[j + 1]; y++)
+ for (x = pps->col_bd[i]; x < pps->col_bd[i + 1]; x++)
+ pps->tile_id[pps->ctb_addr_rs_to_ts[y * sps->ctb_width + x]] = tile_id;
+
+ pps->tile_pos_rs = av_malloc_array(tile_id, sizeof(*pps->tile_pos_rs));
+ if (!pps->tile_pos_rs)
+ return AVERROR(ENOMEM);
+
+ for (j = 0; j < pps->num_tile_rows; j++)
+ for (i = 0; i < pps->num_tile_columns; i++)
+ pps->tile_pos_rs[j * pps->num_tile_columns + i] =
+ pps->row_bd[j] * sps->ctb_width + pps->col_bd[i];
+
+ log2_diff = sps->log2_ctb_size - sps->log2_min_tb_size;
+ for (y = 0; y < sps->min_tb_height; y++) {
+ for (x = 0; x < sps->min_tb_width; x++) {
+ int tb_x = x >> log2_diff;
+ int tb_y = y >> log2_diff;
+ int rs = sps->ctb_width * tb_y + tb_x;
+ int val = pps->ctb_addr_rs_to_ts[rs] << (log2_diff * 2);
+ for (i = 0; i < log2_diff; i++) {
+ int m = 1 << i;
+ val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0);
+ }
+ pps->min_tb_addr_zs[y * sps->min_tb_width + x] = val;
+ }
+ }
+
+ return 0;
+}
+
int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
HEVCParamSets *ps)
{
HEVCSPS *sps = NULL;
- int pic_area_in_ctbs, pic_area_in_min_tbs;
- int log2_diff_ctb_min_tb_size;
- int i, j, x, y, ctb_addr_rs, tile_id;
- int ret = 0;
+ int i, ret = 0;
unsigned int pps_id = 0;
AVBufferRef *pps_buf;
@@ -1234,130 +1359,9 @@ int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
pps->slice_header_extension_present_flag = get_bits1(gb);
skip_bits1(gb); // pps_extension_flag
- // Inferred parameters
- pps->col_bd = av_malloc_array(pps->num_tile_columns + 1, sizeof(*pps->col_bd));
- pps->row_bd = av_malloc_array(pps->num_tile_rows + 1, sizeof(*pps->row_bd));
- pps->col_idxX = av_malloc_array(sps->ctb_width, sizeof(*pps->col_idxX));
- if (!pps->col_bd || !pps->row_bd || !pps->col_idxX) {
- ret = AVERROR(ENOMEM);
- goto err;
- }
-
- if (pps->uniform_spacing_flag) {
- if (!pps->column_width) {
- pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
- pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
- }
- if (!pps->column_width || !pps->row_height) {
- ret = AVERROR(ENOMEM);
- goto err;
- }
-
- for (i = 0; i < pps->num_tile_columns; i++) {
- pps->column_width[i] = ((i + 1) * sps->ctb_width) / pps->num_tile_columns -
- (i * sps->ctb_width) / pps->num_tile_columns;
- }
-
- for (i = 0; i < pps->num_tile_rows; i++) {
- pps->row_height[i] = ((i + 1) * sps->ctb_height) / pps->num_tile_rows -
- (i * sps->ctb_height) / pps->num_tile_rows;
- }
- }
-
- pps->col_bd[0] = 0;
- for (i = 0; i < pps->num_tile_columns; i++)
- pps->col_bd[i + 1] = pps->col_bd[i] + pps->column_width[i];
-
- pps->row_bd[0] = 0;
- for (i = 0; i < pps->num_tile_rows; i++)
- pps->row_bd[i + 1] = pps->row_bd[i] + pps->row_height[i];
-
- for (i = 0, j = 0; i < sps->ctb_width; i++) {
- if (i > pps->col_bd[j])
- j++;
- pps->col_idxX[i] = j;
- }
-
- /**
- * 6.5
- */
- pic_area_in_ctbs = sps->ctb_width * sps->ctb_height;
- pic_area_in_min_tbs = sps->min_tb_width * sps->min_tb_height;
-
- pps->ctb_addr_rs_to_ts = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_rs_to_ts));
- pps->ctb_addr_ts_to_rs = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_ts_to_rs));
- pps->tile_id = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->tile_id));
- pps->min_tb_addr_zs = av_malloc_array(pic_area_in_min_tbs, sizeof(*pps->min_tb_addr_zs));
- if (!pps->ctb_addr_rs_to_ts || !pps->ctb_addr_ts_to_rs ||
- !pps->tile_id || !pps->min_tb_addr_zs) {
- ret = AVERROR(ENOMEM);
- goto err;
- }
-
- for (ctb_addr_rs = 0; ctb_addr_rs < pic_area_in_ctbs; ctb_addr_rs++) {
- int tb_x = ctb_addr_rs % sps->ctb_width;
- int tb_y = ctb_addr_rs / sps->ctb_width;
- int tile_x = 0;
- int tile_y = 0;
- int val = 0;
-
- for (i = 0; i < pps->num_tile_columns; i++) {
- if (tb_x < pps->col_bd[i + 1]) {
- tile_x = i;
- break;
- }
- }
-
- for (i = 0; i < pps->num_tile_rows; i++) {
- if (tb_y < pps->row_bd[i + 1]) {
- tile_y = i;
- break;
- }
- }
-
- for (i = 0; i < tile_x; i++)
- val += pps->row_height[tile_y] * pps->column_width[i];
- for (i = 0; i < tile_y; i++)
- val += sps->ctb_width * pps->row_height[i];
-
- val += (tb_y - pps->row_bd[tile_y]) * pps->column_width[tile_x] +
- tb_x - pps->col_bd[tile_x];
-
- pps->ctb_addr_rs_to_ts[ctb_addr_rs] = val;
- pps->ctb_addr_ts_to_rs[val] = ctb_addr_rs;
- }
-
- for (j = 0, tile_id = 0; j < pps->num_tile_rows; j++)
- for (i = 0; i < pps->num_tile_columns; i++, tile_id++)
- for (y = pps->row_bd[j]; y < pps->row_bd[j + 1]; y++)
- for (x = pps->col_bd[i]; x < pps->col_bd[i + 1]; x++)
- pps->tile_id[pps->ctb_addr_rs_to_ts[y * sps->ctb_width + x]] = tile_id;
-
- pps->tile_pos_rs = av_malloc_array(tile_id, sizeof(*pps->tile_pos_rs));
- if (!pps->tile_pos_rs) {
- ret = AVERROR(ENOMEM);
+ ret = setup_pps(avctx, gb, pps, sps);
+ if (ret < 0)
goto err;
- }
-
- for (j = 0; j < pps->num_tile_rows; j++)
- for (i = 0; i < pps->num_tile_columns; i++)
- pps->tile_pos_rs[j * pps->num_tile_columns + i] = pps->row_bd[j] * sps->ctb_width + pps->col_bd[i];
-
- log2_diff_ctb_min_tb_size = sps->log2_ctb_size - sps->log2_min_tb_size;
- for (y = 0; y < sps->min_tb_height; y++) {
- for (x = 0; x < sps->min_tb_width; x++) {
- int tb_x = x >> log2_diff_ctb_min_tb_size;
- int tb_y = y >> log2_diff_ctb_min_tb_size;
- int ctb_addr_rs = sps->ctb_width * tb_y + tb_x;
- int val = pps->ctb_addr_rs_to_ts[ctb_addr_rs] <<
- (log2_diff_ctb_min_tb_size * 2);
- for (i = 0; i < log2_diff_ctb_min_tb_size; i++) {
- int m = 1 << i;
- val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0);
- }
- pps->min_tb_addr_zs[y * sps->min_tb_width + x] = val;
- }
- }
remove_pps(ps, pps_id);
ps->pps_list[pps_id] = pps_buf;
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