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Merge "Animation and dead zone detection."

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This commit is contained in:
Paul Wilkins
2015-06-08 14:26:05 +00:00
committed by Gerrit Code Review
parent e67d45d4ce 668e804504
commit b19b16cfa1
3 changed files with 68 additions and 29 deletions
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48
vp9/encoder/vp9_firstpass.c
View File

@@ -113,8 +113,8 @@ static void output_stats(FIRSTPASS_STATS *stats,
fpfile = fopen("firstpass.stt", "a");
fprintf(fpfile, "%12.0lf %12.4lf %12.0lf %12.0lf %12.0lf %12.4lf %12.4lf"
"%12.4lf %12.4lf %12.4lf %12.4lf %12.4lf %12.4lf %12.4lf"
"%12.4lf %12.0lf %12.0lf %12.0lf %12.4lf\n",
"%12.4lf %12.4lf %12.4lf %12.4lf %12.4lf %12.4lf %12.4lf %12.4lf"
"%12.4lf %12.4lf %12.0lf %12.0lf %12.0lf %12.4lf\n",
stats->frame,
stats->weight,
stats->intra_error,
@@ -124,6 +124,8 @@ static void output_stats(FIRSTPASS_STATS *stats,
stats->pcnt_motion,
stats->pcnt_second_ref,
stats->pcnt_neutral,
stats->ul_intra_pct,
stats->image_start_row,
stats->MVr,
stats->mvr_abs,
stats->MVc,
@@ -160,7 +162,9 @@ static void zero_stats(FIRSTPASS_STATS *section) {
section->pcnt_motion = 0.0;
section->pcnt_second_ref = 0.0;
section->pcnt_neutral = 0.0;
section->MVr = 0.0;
section->ul_intra_pct = 0.0;
section->image_start_row = 0.0;
section->MVr = 0.0;
section->mvr_abs = 0.0;
section->MVc = 0.0;
section->mvc_abs = 0.0;
@@ -185,7 +189,9 @@ static void accumulate_stats(FIRSTPASS_STATS *section,
section->pcnt_motion += frame->pcnt_motion;
section->pcnt_second_ref += frame->pcnt_second_ref;
section->pcnt_neutral += frame->pcnt_neutral;
section->MVr += frame->MVr;
section->ul_intra_pct += frame->ul_intra_pct;
section->image_start_row += frame->image_start_row;
section->MVr += frame->MVr;
section->mvr_abs += frame->mvr_abs;
section->MVc += frame->MVc;
section->mvc_abs += frame->mvc_abs;
@@ -208,7 +214,9 @@ static void subtract_stats(FIRSTPASS_STATS *section,
section->pcnt_motion -= frame->pcnt_motion;
section->pcnt_second_ref -= frame->pcnt_second_ref;
section->pcnt_neutral -= frame->pcnt_neutral;
section->MVr -= frame->MVr;
section->ul_intra_pct -= frame->ul_intra_pct;
section->image_start_row -= frame->image_start_row;
section->MVr -= frame->MVr;
section->mvr_abs -= frame->mvr_abs;
section->MVc -= frame->MVc;
section->mvc_abs -= frame->mvc_abs;
@@ -453,6 +461,8 @@ static void set_first_pass_params(VP9_COMP *cpi) {
cpi->rc.frames_to_key = INT_MAX;
}
#define UL_INTRA_THRESH 50
#define INVALID_ROW -1
void vp9_first_pass(VP9_COMP *cpi, const struct lookahead_entry *source) {
int mb_row, mb_col;
MACROBLOCK *const x = &cpi->td.mb;
@@ -477,6 +487,8 @@ void vp9_first_pass(VP9_COMP *cpi, const struct lookahead_entry *source) {
int second_ref_count = 0;
const int intrapenalty = INTRA_MODE_PENALTY;
double neutral_count;
int ul_intra_count = 0;
int image_data_start_row = INVALID_ROW;
int new_mv_count = 0;
int sum_in_vectors = 0;
MV lastmv = {0, 0};
@@ -636,6 +648,18 @@ void vp9_first_pass(VP9_COMP *cpi, const struct lookahead_entry *source) {
(bsize >= BLOCK_16X16 ? TX_16X16 : TX_8X8) : TX_4X4;
vp9_encode_intra_block_plane(x, bsize, 0);
this_error = vpx_get_mb_ss(x->plane[0].src_diff);
// Keep a record of blocks that have almost no intra error residual
// (i.e. are in effect completely flat and untextured in the intra
// domain). In natural videos this is uncommon, but it is much more
// common in animations, graphics and screen content, so may be used
// as a signal to detect these types of content.
if (this_error < UL_INTRA_THRESH) {
++ul_intra_count;
} else if ((mb_col > 0) && (image_data_start_row == INVALID_ROW)) {
image_data_start_row = mb_row;
}
#if CONFIG_VP9_HIGHBITDEPTH
if (cm->use_highbitdepth) {
switch (cm->bit_depth) {
@@ -963,6 +987,18 @@ void vp9_first_pass(VP9_COMP *cpi, const struct lookahead_entry *source) {
vp9_clear_system_state();
}
// Clamp the image start to rows/2. This number of rows is discarded top
// and bottom as dead data so rows / 2 means the frame is blank.
if ((image_data_start_row > cm->mb_rows / 2) ||
(image_data_start_row == INVALID_ROW)) {
image_data_start_row = cm->mb_rows / 2;
}
// Exclude any image dead zone
if (image_data_start_row > 0) {
ul_intra_count =
MAX(0, ul_intra_count - (image_data_start_row * cm->mb_cols * 2));
}
{
FIRSTPASS_STATS fps;
// The minimum error here insures some bit allocation to frames even
@@ -987,6 +1023,8 @@ void vp9_first_pass(VP9_COMP *cpi, const struct lookahead_entry *source) {
fps.pcnt_inter = (double)intercount / num_mbs;
fps.pcnt_second_ref = (double)second_ref_count / num_mbs;
fps.pcnt_neutral = (double)neutral_count / num_mbs;
fps.ul_intra_pct = (double)ul_intra_count / num_mbs;
fps.image_start_row = (double)image_data_start_row;
if (mvcount > 0) {
fps.MVr = (double)sum_mvr / mvcount;

2
vp9/encoder/vp9_firstpass.h
View File

@@ -51,6 +51,8 @@ typedef struct {
double pcnt_motion;
double pcnt_second_ref;
double pcnt_neutral;
double ul_intra_pct;
double image_start_row;
double MVr;
double mvr_abs;
double MVc;

47
vp9/encoder/vp9_speed_features.c
View File

@@ -19,6 +19,28 @@ static int frame_is_boosted(const VP9_COMP *cpi) {
return frame_is_kf_gf_arf(cpi) || vp9_is_upper_layer_key_frame(cpi);
}
// Sets a partition size down to which the auto partition code will always
// search (can go lower), based on the image dimensions. The logic here
// is that the extent to which ringing artefacts are offensive, depends
// partly on the screen area that over which they propogate. Propogation is
// limited by transform block size but the screen area take up by a given block
// size will be larger for a small image format stretched to full screen.
static BLOCK_SIZE set_partition_min_limit(VP9_COMMON *const cm) {
unsigned int screen_area = (cm->width * cm->height);
// Select block size based on image format size.
if (screen_area < 1280 * 720) {
// Formats smaller in area than 720P
return BLOCK_4X4;
} else if (screen_area < 1920 * 1080) {
// Format >= 720P and < 1080P
return BLOCK_8X8;
} else {
// Formats 1080P and up
return BLOCK_16X16;
}
}
static void set_good_speed_feature_framesize_dependent(VP9_COMMON *cm,
SPEED_FEATURES *sf,
int speed) {
@@ -45,6 +67,7 @@ static void set_good_speed_feature_framesize_dependent(VP9_COMMON *cm,
sf->partition_search_breakout_dist_thr = (1 << 22);
sf->partition_search_breakout_rate_thr = 100;
}
sf->rd_auto_partition_min_limit = set_partition_min_limit(cm);
}
if (speed >= 3) {
@@ -72,29 +95,6 @@ static void set_good_speed_feature_framesize_dependent(VP9_COMMON *cm,
}
}
// Sets a partition size down to which the auto partition code will always
// search (can go lower), based on the image dimensions. The logic here
// is that the extent to which ringing artefacts are offensive, depends
// partly on the screen area that over which they propogate. Propogation is
// limited by transform block size but the screen area take up by a given block
// size will be larger for a small image format stretched to full screen.
static BLOCK_SIZE set_partition_min_limit(VP9_COMP *cpi) {
VP9_COMMON *const cm = &cpi->common;
unsigned int screen_area = (cm->width * cm->height);
// Select block size based on image format size.
if (screen_area < 1280 * 720) {
// Formats smaller in area than 720P
return BLOCK_4X4;
} else if (screen_area < 1920 * 1080) {
// Format >= 720P and < 1080P
return BLOCK_8X8;
} else {
// Formats 1080P and up
return BLOCK_16X16;
}
}
static void set_good_speed_feature(VP9_COMP *cpi, VP9_COMMON *cm,
SPEED_FEATURES *sf, int speed) {
const int boosted = frame_is_boosted(cpi);
@@ -139,7 +139,6 @@ static void set_good_speed_feature(VP9_COMP *cpi, VP9_COMMON *cm,
sf->disable_filter_search_var_thresh = 100;
sf->comp_inter_joint_search_thresh = BLOCK_SIZES;
sf->auto_min_max_partition_size = RELAXED_NEIGHBORING_MIN_MAX;
sf->rd_auto_partition_min_limit = set_partition_min_limit(cpi);
sf->allow_partition_search_skip = 1;
}