#include "vp9/common/vp9_quant_common.h"
#include "vp9/common/vp9_reconinter.h" // vp9_setup_dst_planes()
#include "vp9/common/vp9_systemdependent.h"
-
#include "vp9/encoder/vp9_aq_variance.h"
#include "vp9/encoder/vp9_block.h"
#include "vp9/encoder/vp9_encodeframe.h"
#include "vp9/encoder/vp9_firstpass.h"
#include "vp9/encoder/vp9_mcomp.h"
#include "vp9/encoder/vp9_quantize.h"
-#include "vp9/encoder/vp9_ratectrl.h"
-#include "vp9/encoder/vp9_rdopt.h"
+#include "vp9/encoder/vp9_rd.h"
#include "vp9/encoder/vp9_variance.h"
-#define OUTPUT_FPF 0
-
-#define IIFACTOR 12.5
-#define IIKFACTOR1 12.5
-#define IIKFACTOR2 15.0
-#define RMAX 512.0
-#define GF_RMAX 96.0
-#define ERR_DIVISOR 150.0
-#define MIN_DECAY_FACTOR 0.1
-
-#define KF_MB_INTRA_MIN 150
-#define GF_MB_INTRA_MIN 100
+#define OUTPUT_FPF 0
+#define ARF_STATS_OUTPUT 0
+
+#define BOOST_BREAKOUT 12.5
+#define BOOST_FACTOR 12.5
+#define ERR_DIVISOR 128.0
+#define FACTOR_PT_LOW 0.70
+#define FACTOR_PT_HIGH 0.90
+#define FIRST_PASS_Q 10.0
+#define GF_MAX_BOOST 96.0
+#define INTRA_MODE_PENALTY 1024
+#define KF_MAX_BOOST 128.0
+#define MIN_ARF_GF_BOOST 240
+#define MIN_DECAY_FACTOR 0.01
+#define MIN_GF_INTERVAL 4
+#define MIN_KF_BOOST 300
+#define NEW_MV_MODE_PENALTY 32
+#define SVC_FACTOR_PT_LOW 0.45
#define DOUBLE_DIVIDE_CHECK(x) ((x) < 0 ? (x) - 0.000001 : (x) + 0.000001)
-#define MIN_KF_BOOST 300
-
-#if CONFIG_MULTIPLE_ARF
-// Set MIN_GF_INTERVAL to 1 for the full decomposition.
-#define MIN_GF_INTERVAL 2
-#else
-#define MIN_GF_INTERVAL 4
+#if ARF_STATS_OUTPUT
+unsigned int arf_count = 0;
#endif
-
-// #define LONG_TERM_VBR_CORRECTION
-
static void swap_yv12(YV12_BUFFER_CONFIG *a, YV12_BUFFER_CONFIG *b) {
YV12_BUFFER_CONFIG temp = *a;
*a = *b;
*b = temp;
}
-static int gfboost_qadjust(int qindex) {
- const double q = vp9_convert_qindex_to_q(qindex);
- return (int)((0.00000828 * q * q * q) +
- (-0.0055 * q * q) +
- (1.32 * q) + 79.3);
-}
-
// Resets the first pass file to the given position using a relative seek from
// the current position.
-static void reset_fpf_position(struct twopass_rc *p,
+static void reset_fpf_position(TWO_PASS *p,
const FIRSTPASS_STATS *position) {
p->stats_in = position;
}
-static int lookup_next_frame_stats(const struct twopass_rc *p,
- FIRSTPASS_STATS *next_frame) {
- if (p->stats_in >= p->stats_in_end)
- return EOF;
-
- *next_frame = *p->stats_in;
- return 1;
-}
-
-
// Read frame stats at an offset from the current position.
-static int read_frame_stats(const struct twopass_rc *p,
- FIRSTPASS_STATS *frame_stats, int offset) {
- const FIRSTPASS_STATS *fps_ptr = p->stats_in;
-
- // Check legality of offset.
- if (offset >= 0) {
- if (&fps_ptr[offset] >= p->stats_in_end)
- return EOF;
- } else if (offset < 0) {
- if (&fps_ptr[offset] < p->stats_in_start)
- return EOF;
+static const FIRSTPASS_STATS *read_frame_stats(const TWO_PASS *p, int offset) {
+ if ((offset >= 0 && p->stats_in + offset >= p->stats_in_end) ||
+ (offset < 0 && p->stats_in + offset < p->stats_in_start)) {
+ return NULL;
}
- *frame_stats = fps_ptr[offset];
- return 1;
+ return &p->stats_in[offset];
}
-static int input_stats(struct twopass_rc *p, FIRSTPASS_STATS *fps) {
+static int input_stats(TWO_PASS *p, FIRSTPASS_STATS *fps) {
if (p->stats_in >= p->stats_in_end)
return EOF;
FILE *fpfile;
fpfile = fopen("firstpass.stt", "a");
- fprintf(fpfile, "%12.0f %12.0f %12.0f %12.0f %12.0f %12.4f %12.4f"
+ fprintf(fpfile, "%12.0f %12.0f %12.0f %12.0f %12.4f %12.4f"
"%12.4f %12.4f %12.4f %12.4f %12.4f %12.4f %12.4f"
"%12.0f %12.0f %12.4f %12.0f %12.0f %12.4f\n",
stats->frame,
stats->intra_error,
stats->coded_error,
stats->sr_coded_error,
- stats->ssim_weighted_pred_err,
stats->pcnt_inter,
stats->pcnt_motion,
stats->pcnt_second_ref,
#endif
}
+#if CONFIG_FP_MB_STATS
+static void output_fpmb_stats(uint8_t *this_frame_mb_stats, VP9_COMMON *cm,
+ struct vpx_codec_pkt_list *pktlist) {
+ struct vpx_codec_cx_pkt pkt;
+ pkt.kind = VPX_CODEC_FPMB_STATS_PKT;
+ pkt.data.firstpass_mb_stats.buf = this_frame_mb_stats;
+ pkt.data.firstpass_mb_stats.sz = cm->MBs * sizeof(uint8_t);
+ vpx_codec_pkt_list_add(pktlist, &pkt);
+}
+#endif
+
static void zero_stats(FIRSTPASS_STATS *section) {
section->frame = 0.0;
section->intra_error = 0.0;
section->coded_error = 0.0;
section->sr_coded_error = 0.0;
- section->ssim_weighted_pred_err = 0.0;
section->pcnt_inter = 0.0;
section->pcnt_motion = 0.0;
section->pcnt_second_ref = 0.0;
section->intra_error += frame->intra_error;
section->coded_error += frame->coded_error;
section->sr_coded_error += frame->sr_coded_error;
- section->ssim_weighted_pred_err += frame->ssim_weighted_pred_err;
section->pcnt_inter += frame->pcnt_inter;
section->pcnt_motion += frame->pcnt_motion;
section->pcnt_second_ref += frame->pcnt_second_ref;
section->intra_error -= frame->intra_error;
section->coded_error -= frame->coded_error;
section->sr_coded_error -= frame->sr_coded_error;
- section->ssim_weighted_pred_err -= frame->ssim_weighted_pred_err;
section->pcnt_inter -= frame->pcnt_inter;
section->pcnt_motion -= frame->pcnt_motion;
section->pcnt_second_ref -= frame->pcnt_second_ref;
section->duration -= frame->duration;
}
-static void avg_stats(FIRSTPASS_STATS *section) {
- if (section->count < 1.0)
- return;
-
- section->intra_error /= section->count;
- section->coded_error /= section->count;
- section->sr_coded_error /= section->count;
- section->ssim_weighted_pred_err /= section->count;
- section->pcnt_inter /= section->count;
- section->pcnt_second_ref /= section->count;
- section->pcnt_neutral /= section->count;
- section->pcnt_motion /= section->count;
- section->MVr /= section->count;
- section->mvr_abs /= section->count;
- section->MVc /= section->count;
- section->mvc_abs /= section->count;
- section->MVrv /= section->count;
- section->MVcv /= section->count;
- section->mv_in_out_count /= section->count;
- section->duration /= section->count;
-}
// Calculate a modified Error used in distributing bits between easier and
// harder frames.
-static double calculate_modified_err(const VP9_COMP *cpi,
+static double calculate_modified_err(const TWO_PASS *twopass,
+ const VP9EncoderConfig *oxcf,
const FIRSTPASS_STATS *this_frame) {
- const struct twopass_rc *twopass = &cpi->twopass;
- const SVC *const svc = &cpi->svc;
- const FIRSTPASS_STATS *stats;
- double av_err;
- double modified_error;
-
- if (svc->number_spatial_layers > 1 &&
- svc->number_temporal_layers == 1) {
- twopass = &svc->layer_context[svc->spatial_layer_id].twopass;
- }
-
- stats = &twopass->total_stats;
- av_err = stats->ssim_weighted_pred_err / stats->count;
- modified_error = av_err * pow(this_frame->ssim_weighted_pred_err /
- DOUBLE_DIVIDE_CHECK(av_err),
- cpi->oxcf.two_pass_vbrbias / 100.0);
-
+ const FIRSTPASS_STATS *const stats = &twopass->total_stats;
+ const double av_err = stats->coded_error / stats->count;
+ const double modified_error = av_err *
+ pow(this_frame->coded_error / DOUBLE_DIVIDE_CHECK(av_err),
+ oxcf->two_pass_vbrbias / 100.0);
return fclamp(modified_error,
twopass->modified_error_min, twopass->modified_error_max);
}
-static const double weight_table[256] = {
- 0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000,
- 0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000,
- 0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000,
- 0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.020000,
- 0.020000, 0.020000, 0.020000, 0.020000, 0.020000, 0.031250, 0.062500,
- 0.093750, 0.125000, 0.156250, 0.187500, 0.218750, 0.250000, 0.281250,
- 0.312500, 0.343750, 0.375000, 0.406250, 0.437500, 0.468750, 0.500000,
- 0.531250, 0.562500, 0.593750, 0.625000, 0.656250, 0.687500, 0.718750,
- 0.750000, 0.781250, 0.812500, 0.843750, 0.875000, 0.906250, 0.937500,
- 0.968750, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 1.000000,
- 1.000000, 1.000000, 1.000000, 1.000000
-};
-
-static double simple_weight(const YV12_BUFFER_CONFIG *buf) {
- int i, j;
- double sum = 0.0;
- const int w = buf->y_crop_width;
- const int h = buf->y_crop_height;
- const uint8_t *row = buf->y_buffer;
-
- for (i = 0; i < h; ++i) {
- const uint8_t *pixel = row;
- for (j = 0; j < w; ++j)
- sum += weight_table[*pixel++];
- row += buf->y_stride;
- }
-
- return MAX(0.1, sum / (w * h));
-}
-
// This function returns the maximum target rate per frame.
static int frame_max_bits(const RATE_CONTROL *rc,
const VP9EncoderConfig *oxcf) {
}
void vp9_end_first_pass(VP9_COMP *cpi) {
- if (cpi->use_svc && cpi->svc.number_temporal_layers == 1) {
+ if (is_two_pass_svc(cpi)) {
int i;
for (i = 0; i < cpi->svc.number_spatial_layers; ++i) {
output_stats(&cpi->svc.layer_context[i].twopass.total_stats,
return sse;
}
+#if CONFIG_VP9_HIGHBITDEPTH
+static vp9_variance_fn_t highbd_get_block_variance_fn(BLOCK_SIZE bsize,
+ int bd) {
+ switch (bd) {
+ default:
+ switch (bsize) {
+ case BLOCK_8X8:
+ return vp9_highbd_mse8x8;
+ case BLOCK_16X8:
+ return vp9_highbd_mse16x8;
+ case BLOCK_8X16:
+ return vp9_highbd_mse8x16;
+ default:
+ return vp9_highbd_mse16x16;
+ }
+ break;
+ case 10:
+ switch (bsize) {
+ case BLOCK_8X8:
+ return vp9_highbd_10_mse8x8;
+ case BLOCK_16X8:
+ return vp9_highbd_10_mse16x8;
+ case BLOCK_8X16:
+ return vp9_highbd_10_mse8x16;
+ default:
+ return vp9_highbd_10_mse16x16;
+ }
+ break;
+ case 12:
+ switch (bsize) {
+ case BLOCK_8X8:
+ return vp9_highbd_12_mse8x8;
+ case BLOCK_16X8:
+ return vp9_highbd_12_mse16x8;
+ case BLOCK_8X16:
+ return vp9_highbd_12_mse8x16;
+ default:
+ return vp9_highbd_12_mse16x16;
+ }
+ break;
+ }
+}
+
+static unsigned int highbd_get_prediction_error(BLOCK_SIZE bsize,
+ const struct buf_2d *src,
+ const struct buf_2d *ref,
+ int bd) {
+ unsigned int sse;
+ const vp9_variance_fn_t fn = highbd_get_block_variance_fn(bsize, bd);
+ fn(src->buf, src->stride, ref->buf, ref->stride, &sse);
+ return sse;
+}
+#endif // CONFIG_VP9_HIGHBITDEPTH
+
// Refine the motion search range according to the frame dimension
// for first pass test.
static int get_search_range(const VP9_COMMON *cm) {
MV tmp_mv = {0, 0};
MV ref_mv_full = {ref_mv->row >> 3, ref_mv->col >> 3};
int num00, tmp_err, n;
- const BLOCK_SIZE bsize = xd->mi[0]->mbmi.sb_type;
+ const BLOCK_SIZE bsize = xd->mi[0].src_mi->mbmi.sb_type;
vp9_variance_fn_ptr_t v_fn_ptr = cpi->fn_ptr[bsize];
- const int new_mv_mode_penalty = 256;
+ const int new_mv_mode_penalty = NEW_MV_MODE_PENALTY;
int step_param = 3;
int further_steps = (MAX_MVSEARCH_STEPS - 1) - step_param;
// Override the default variance function to use MSE.
v_fn_ptr.vf = get_block_variance_fn(bsize);
+#if CONFIG_VP9_HIGHBITDEPTH
+ if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
+ v_fn_ptr.vf = highbd_get_block_variance_fn(bsize, xd->bd);
+ }
+#endif // CONFIG_VP9_HIGHBITDEPTH
// Center the initial step/diamond search on best mv.
tmp_err = cpi->diamond_search_sad(x, &cpi->ss_cfg, &ref_mv_full, &tmp_mv,
}
}
-void vp9_first_pass(VP9_COMP *cpi) {
+static int find_fp_qindex(vpx_bit_depth_t bit_depth) {
+ int i;
+
+ for (i = 0; i < QINDEX_RANGE; ++i)
+ if (vp9_convert_qindex_to_q(i, bit_depth) >= FIRST_PASS_Q)
+ break;
+
+ if (i == QINDEX_RANGE)
+ i--;
+
+ return i;
+}
+
+static void set_first_pass_params(VP9_COMP *cpi) {
+ VP9_COMMON *const cm = &cpi->common;
+ if (!cpi->refresh_alt_ref_frame &&
+ (cm->current_video_frame == 0 ||
+ (cpi->frame_flags & FRAMEFLAGS_KEY))) {
+ cm->frame_type = KEY_FRAME;
+ } else {
+ cm->frame_type = INTER_FRAME;
+ }
+ // Do not use periodic key frames.
+ cpi->rc.frames_to_key = INT_MAX;
+}
+
+void vp9_first_pass(VP9_COMP *cpi, const struct lookahead_entry *source) {
int mb_row, mb_col;
MACROBLOCK *const x = &cpi->mb;
VP9_COMMON *const cm = &cpi->common;
TileInfo tile;
struct macroblock_plane *const p = x->plane;
struct macroblockd_plane *const pd = xd->plane;
- const PICK_MODE_CONTEXT *ctx = &x->pc_root->none;
+ const PICK_MODE_CONTEXT *ctx = &cpi->pc_root->none;
int i;
int recon_yoffset, recon_uvoffset;
int mvcount = 0;
int intercount = 0;
int second_ref_count = 0;
- int intrapenalty = 256;
+ const int intrapenalty = INTRA_MODE_PENALTY;
int neutral_count = 0;
int new_mv_count = 0;
int sum_in_vectors = 0;
- uint32_t lastmv_as_int = 0;
- struct twopass_rc *twopass = &cpi->twopass;
+ MV lastmv = {0, 0};
+ TWO_PASS *twopass = &cpi->twopass;
const MV zero_mv = {0, 0};
const YV12_BUFFER_CONFIG *first_ref_buf = lst_yv12;
+ LAYER_CONTEXT *const lc = is_two_pass_svc(cpi) ?
+ &cpi->svc.layer_context[cpi->svc.spatial_layer_id] : NULL;
+
+#if CONFIG_FP_MB_STATS
+ if (cpi->use_fp_mb_stats) {
+ vp9_zero_array(cpi->twopass.frame_mb_stats_buf, cm->MBs);
+ }
+#endif
vp9_clear_system_state();
- if (cpi->use_svc && cpi->svc.number_temporal_layers == 1) {
- MV_REFERENCE_FRAME ref_frame = LAST_FRAME;
- const YV12_BUFFER_CONFIG *scaled_ref_buf = NULL;
- twopass = &cpi->svc.layer_context[cpi->svc.spatial_layer_id].twopass;
+ set_first_pass_params(cpi);
+ vp9_set_quantizer(cm, find_fp_qindex(cm->bit_depth));
+
+ if (lc != NULL) {
+ twopass = &lc->twopass;
+
+ cpi->lst_fb_idx = cpi->svc.spatial_layer_id;
+ cpi->ref_frame_flags = VP9_LAST_FLAG;
+
+ if (cpi->svc.number_spatial_layers + cpi->svc.spatial_layer_id <
+ REF_FRAMES) {
+ cpi->gld_fb_idx =
+ cpi->svc.number_spatial_layers + cpi->svc.spatial_layer_id;
+ cpi->ref_frame_flags |= VP9_GOLD_FLAG;
+ cpi->refresh_golden_frame = (lc->current_video_frame_in_layer == 0);
+ } else {
+ cpi->refresh_golden_frame = 0;
+ }
+
+ if (lc->current_video_frame_in_layer == 0)
+ cpi->ref_frame_flags = 0;
vp9_scale_references(cpi);
// Use either last frame or alt frame for motion search.
if (cpi->ref_frame_flags & VP9_LAST_FLAG) {
- scaled_ref_buf = vp9_get_scaled_ref_frame(cpi, LAST_FRAME);
- ref_frame = LAST_FRAME;
- } else if (cpi->ref_frame_flags & VP9_ALT_FLAG) {
- scaled_ref_buf = vp9_get_scaled_ref_frame(cpi, ALTREF_FRAME);
- ref_frame = ALTREF_FRAME;
+ first_ref_buf = vp9_get_scaled_ref_frame(cpi, LAST_FRAME);
+ if (first_ref_buf == NULL)
+ first_ref_buf = get_ref_frame_buffer(cpi, LAST_FRAME);
}
- if (scaled_ref_buf != NULL) {
- // Update the stride since we are using scaled reference buffer
- first_ref_buf = scaled_ref_buf;
- recon_y_stride = first_ref_buf->y_stride;
- recon_uv_stride = first_ref_buf->uv_stride;
- uv_mb_height = 16 >> (first_ref_buf->y_height > first_ref_buf->uv_height);
+ if (cpi->ref_frame_flags & VP9_GOLD_FLAG) {
+ const int ref_idx =
+ cm->ref_frame_map[get_ref_frame_idx(cpi, GOLDEN_FRAME)];
+ const int scaled_idx = cpi->scaled_ref_idx[GOLDEN_FRAME - 1];
+
+ gld_yv12 = (scaled_idx != ref_idx) ? &cm->frame_bufs[scaled_idx].buf :
+ get_ref_frame_buffer(cpi, GOLDEN_FRAME);
+ } else {
+ gld_yv12 = NULL;
}
- // Disable golden frame for svc first pass for now.
- gld_yv12 = NULL;
- set_ref_ptrs(cm, xd, ref_frame, NONE);
+ recon_y_stride = new_yv12->y_stride;
+ recon_uv_stride = new_yv12->uv_stride;
+ uv_mb_height = 16 >> (new_yv12->y_height > new_yv12->uv_height);
+
+ set_ref_ptrs(cm, xd,
+ (cpi->ref_frame_flags & VP9_LAST_FLAG) ? LAST_FRAME: NONE,
+ (cpi->ref_frame_flags & VP9_GOLD_FLAG) ? GOLDEN_FRAME : NONE);
cpi->Source = vp9_scale_if_required(cm, cpi->un_scaled_source,
&cpi->scaled_source);
}
+ vp9_setup_block_planes(&x->e_mbd, cm->subsampling_x, cm->subsampling_y);
+
vp9_setup_src_planes(x, cpi->Source, 0, 0);
vp9_setup_pre_planes(xd, 0, first_ref_buf, 0, 0, NULL);
vp9_setup_dst_planes(xd->plane, new_yv12, 0, 0);
- xd->mi = cm->mi_grid_visible;
- xd->mi[0] = cm->mi;
-
- vp9_setup_block_planes(&x->e_mbd, cm->subsampling_x, cm->subsampling_y);
+ xd->mi = cm->mi;
+ xd->mi[0].src_mi = &xd->mi[0];
vp9_frame_init_quantizer(cpi);
vp9_tile_init(&tile, cm, 0, 0);
for (mb_row = 0; mb_row < cm->mb_rows; ++mb_row) {
- int_mv best_ref_mv;
-
- best_ref_mv.as_int = 0;
+ MV best_ref_mv = {0, 0};
// Reset above block coeffs.
xd->up_available = (mb_row != 0);
const int use_dc_pred = (mb_col || mb_row) && (!mb_col || !mb_row);
double error_weight = 1.0;
const BLOCK_SIZE bsize = get_bsize(cm, mb_row, mb_col);
+#if CONFIG_FP_MB_STATS
+ const int mb_index = mb_row * cm->mb_cols + mb_col;
+#endif
vp9_clear_system_state();
xd->plane[1].dst.buf = new_yv12->u_buffer + recon_uvoffset;
xd->plane[2].dst.buf = new_yv12->v_buffer + recon_uvoffset;
xd->left_available = (mb_col != 0);
- xd->mi[0]->mbmi.sb_type = bsize;
- xd->mi[0]->mbmi.ref_frame[0] = INTRA_FRAME;
+ xd->mi[0].src_mi->mbmi.sb_type = bsize;
+ xd->mi[0].src_mi->mbmi.ref_frame[0] = INTRA_FRAME;
set_mi_row_col(xd, &tile,
mb_row << 1, num_8x8_blocks_high_lookup[bsize],
mb_col << 1, num_8x8_blocks_wide_lookup[bsize],
// Do intra 16x16 prediction.
x->skip_encode = 0;
- xd->mi[0]->mbmi.mode = DC_PRED;
- xd->mi[0]->mbmi.tx_size = use_dc_pred ?
+ xd->mi[0].src_mi->mbmi.mode = DC_PRED;
+ xd->mi[0].src_mi->mbmi.tx_size = use_dc_pred ?
(bsize >= BLOCK_16X16 ? TX_16X16 : TX_8X8) : TX_4X4;
vp9_encode_intra_block_plane(x, bsize, 0);
this_error = vp9_get_mb_ss(x->plane[0].src_diff);
+#if CONFIG_VP9_HIGHBITDEPTH
+ if (cm->use_highbitdepth) {
+ switch (cm->bit_depth) {
+ case VPX_BITS_8:
+ break;
+ case VPX_BITS_10:
+ this_error >>= 4;
+ break;
+ case VPX_BITS_12:
+ this_error >>= 8;
+ break;
+ default:
+ assert(0 && "cm->bit_depth should be VPX_BITS_8, "
+ "VPX_BITS_10 or VPX_BITS_12");
+ return;
+ }
+ }
+#endif // CONFIG_VP9_HIGHBITDEPTH
if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
vp9_clear_system_state();
// Accumulate the intra error.
intra_error += (int64_t)this_error;
+#if CONFIG_FP_MB_STATS
+ if (cpi->use_fp_mb_stats) {
+ // initialization
+ cpi->twopass.frame_mb_stats_buf[mb_index] = 0;
+ }
+#endif
+
// Set up limit values for motion vectors to prevent them extending
// outside the UMV borders.
x->mv_col_min = -((mb_col * 16) + BORDER_MV_PIXELS_B16);
x->mv_col_max = ((cm->mb_cols - 1 - mb_col) * 16) + BORDER_MV_PIXELS_B16;
// Other than for the first frame do a motion search.
- if (cm->current_video_frame > 0) {
- int tmp_err, motion_error;
- int_mv mv, tmp_mv;
+ if ((lc == NULL && cm->current_video_frame > 0) ||
+ (lc != NULL && lc->current_video_frame_in_layer > 0)) {
+ int tmp_err, motion_error, raw_motion_error;
+ // Assume 0,0 motion with no mv overhead.
+ MV mv = {0, 0} , tmp_mv = {0, 0};
+ struct buf_2d unscaled_last_source_buf_2d;
xd->plane[0].pre[0].buf = first_ref_buf->y_buffer + recon_yoffset;
- motion_error = get_prediction_error(bsize, &x->plane[0].src,
- &xd->plane[0].pre[0]);
- // Assume 0,0 motion with no mv overhead.
- mv.as_int = tmp_mv.as_int = 0;
-
- // Test last reference frame using the previous best mv as the
- // starting point (best reference) for the search.
- first_pass_motion_search(cpi, x, &best_ref_mv.as_mv, &mv.as_mv,
- &motion_error);
- if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
- vp9_clear_system_state();
- motion_error = (int)(motion_error * error_weight);
+#if CONFIG_VP9_HIGHBITDEPTH
+ if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
+ motion_error = highbd_get_prediction_error(
+ bsize, &x->plane[0].src, &xd->plane[0].pre[0], xd->bd);
+ } else {
+ motion_error = get_prediction_error(
+ bsize, &x->plane[0].src, &xd->plane[0].pre[0]);
}
-
- // If the current best reference mv is not centered on 0,0 then do a 0,0
- // based search as well.
- if (best_ref_mv.as_int) {
- tmp_err = INT_MAX;
- first_pass_motion_search(cpi, x, &zero_mv, &tmp_mv.as_mv,
- &tmp_err);
+#else
+ motion_error = get_prediction_error(
+ bsize, &x->plane[0].src, &xd->plane[0].pre[0]);
+#endif // CONFIG_VP9_HIGHBITDEPTH
+
+ // Compute the motion error of the 0,0 motion using the last source
+ // frame as the reference. Skip the further motion search on
+ // reconstructed frame if this error is small.
+ unscaled_last_source_buf_2d.buf =
+ cpi->unscaled_last_source->y_buffer + recon_yoffset;
+ unscaled_last_source_buf_2d.stride =
+ cpi->unscaled_last_source->y_stride;
+#if CONFIG_VP9_HIGHBITDEPTH
+ if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
+ raw_motion_error = highbd_get_prediction_error(
+ bsize, &x->plane[0].src, &unscaled_last_source_buf_2d, xd->bd);
+ } else {
+ raw_motion_error = get_prediction_error(
+ bsize, &x->plane[0].src, &unscaled_last_source_buf_2d);
+ }
+#else
+ raw_motion_error = get_prediction_error(
+ bsize, &x->plane[0].src, &unscaled_last_source_buf_2d);
+#endif // CONFIG_VP9_HIGHBITDEPTH
+
+ // TODO(pengchong): Replace the hard-coded threshold
+ if (raw_motion_error > 25 || lc != NULL) {
+ // Test last reference frame using the previous best mv as the
+ // starting point (best reference) for the search.
+ first_pass_motion_search(cpi, x, &best_ref_mv, &mv, &motion_error);
if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
vp9_clear_system_state();
- tmp_err = (int)(tmp_err * error_weight);
+ motion_error = (int)(motion_error * error_weight);
}
- if (tmp_err < motion_error) {
- motion_error = tmp_err;
- mv.as_int = tmp_mv.as_int;
- }
- }
+ // If the current best reference mv is not centered on 0,0 then do a
+ // 0,0 based search as well.
+ if (!is_zero_mv(&best_ref_mv)) {
+ tmp_err = INT_MAX;
+ first_pass_motion_search(cpi, x, &zero_mv, &tmp_mv, &tmp_err);
+ if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
+ vp9_clear_system_state();
+ tmp_err = (int)(tmp_err * error_weight);
+ }
- // Search in an older reference frame.
- if (cm->current_video_frame > 1 && gld_yv12 != NULL) {
- // Assume 0,0 motion with no mv overhead.
- int gf_motion_error;
+ if (tmp_err < motion_error) {
+ motion_error = tmp_err;
+ mv = tmp_mv;
+ }
+ }
- xd->plane[0].pre[0].buf = gld_yv12->y_buffer + recon_yoffset;
- gf_motion_error = get_prediction_error(bsize, &x->plane[0].src,
- &xd->plane[0].pre[0]);
+ // Search in an older reference frame.
+ if (((lc == NULL && cm->current_video_frame > 1) ||
+ (lc != NULL && lc->current_video_frame_in_layer > 1))
+ && gld_yv12 != NULL) {
+ // Assume 0,0 motion with no mv overhead.
+ int gf_motion_error;
+
+ xd->plane[0].pre[0].buf = gld_yv12->y_buffer + recon_yoffset;
+#if CONFIG_VP9_HIGHBITDEPTH
+ if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
+ gf_motion_error = highbd_get_prediction_error(
+ bsize, &x->plane[0].src, &xd->plane[0].pre[0], xd->bd);
+ } else {
+ gf_motion_error = get_prediction_error(
+ bsize, &x->plane[0].src, &xd->plane[0].pre[0]);
+ }
+#else
+ gf_motion_error = get_prediction_error(
+ bsize, &x->plane[0].src, &xd->plane[0].pre[0]);
+#endif // CONFIG_VP9_HIGHBITDEPTH
+
+ first_pass_motion_search(cpi, x, &zero_mv, &tmp_mv,
+ &gf_motion_error);
+ if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
+ vp9_clear_system_state();
+ gf_motion_error = (int)(gf_motion_error * error_weight);
+ }
- first_pass_motion_search(cpi, x, &zero_mv, &tmp_mv.as_mv,
- &gf_motion_error);
- if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
- vp9_clear_system_state();
- gf_motion_error = (int)(gf_motion_error * error_weight);
+ if (gf_motion_error < motion_error && gf_motion_error < this_error)
+ ++second_ref_count;
+
+ // Reset to last frame as reference buffer.
+ xd->plane[0].pre[0].buf = first_ref_buf->y_buffer + recon_yoffset;
+ xd->plane[1].pre[0].buf = first_ref_buf->u_buffer + recon_uvoffset;
+ xd->plane[2].pre[0].buf = first_ref_buf->v_buffer + recon_uvoffset;
+
+ // In accumulating a score for the older reference frame take the
+ // best of the motion predicted score and the intra coded error
+ // (just as will be done for) accumulation of "coded_error" for
+ // the last frame.
+ if (gf_motion_error < this_error)
+ sr_coded_error += gf_motion_error;
+ else
+ sr_coded_error += this_error;
+ } else {
+ sr_coded_error += motion_error;
}
-
- if (gf_motion_error < motion_error && gf_motion_error < this_error)
- ++second_ref_count;
-
- // Reset to last frame as reference buffer.
- xd->plane[0].pre[0].buf = first_ref_buf->y_buffer + recon_yoffset;
- xd->plane[1].pre[0].buf = first_ref_buf->u_buffer + recon_uvoffset;
- xd->plane[2].pre[0].buf = first_ref_buf->v_buffer + recon_uvoffset;
-
- // In accumulating a score for the older reference frame take the
- // best of the motion predicted score and the intra coded error
- // (just as will be done for) accumulation of "coded_error" for
- // the last frame.
- if (gf_motion_error < this_error)
- sr_coded_error += gf_motion_error;
- else
- sr_coded_error += this_error;
} else {
sr_coded_error += motion_error;
}
+
// Start by assuming that intra mode is best.
- best_ref_mv.as_int = 0;
+ best_ref_mv.row = 0;
+ best_ref_mv.col = 0;
+
+#if CONFIG_FP_MB_STATS
+ if (cpi->use_fp_mb_stats) {
+ // intra predication statistics
+ cpi->twopass.frame_mb_stats_buf[mb_index] = 0;
+ cpi->twopass.frame_mb_stats_buf[mb_index] |= FPMB_DCINTRA_MASK;
+ cpi->twopass.frame_mb_stats_buf[mb_index] |= FPMB_MOTION_ZERO_MASK;
+ if (this_error > FPMB_ERROR_LARGE_TH) {
+ cpi->twopass.frame_mb_stats_buf[mb_index] |= FPMB_ERROR_LARGE_MASK;
+ } else if (this_error < FPMB_ERROR_SMALL_TH) {
+ cpi->twopass.frame_mb_stats_buf[mb_index] |= FPMB_ERROR_SMALL_MASK;
+ }
+ }
+#endif
if (motion_error <= this_error) {
// Keep a count of cases where the inter and intra were very close
this_error < 2 * intrapenalty)
++neutral_count;
- mv.as_mv.row *= 8;
- mv.as_mv.col *= 8;
+ mv.row *= 8;
+ mv.col *= 8;
this_error = motion_error;
- xd->mi[0]->mbmi.mode = NEWMV;
- xd->mi[0]->mbmi.mv[0] = mv;
- xd->mi[0]->mbmi.tx_size = TX_4X4;
- xd->mi[0]->mbmi.ref_frame[0] = LAST_FRAME;
- xd->mi[0]->mbmi.ref_frame[1] = NONE;
+ xd->mi[0].src_mi->mbmi.mode = NEWMV;
+ xd->mi[0].src_mi->mbmi.mv[0].as_mv = mv;
+ xd->mi[0].src_mi->mbmi.tx_size = TX_4X4;
+ xd->mi[0].src_mi->mbmi.ref_frame[0] = LAST_FRAME;
+ xd->mi[0].src_mi->mbmi.ref_frame[1] = NONE;
vp9_build_inter_predictors_sby(xd, mb_row << 1, mb_col << 1, bsize);
vp9_encode_sby_pass1(x, bsize);
- sum_mvr += mv.as_mv.row;
- sum_mvr_abs += abs(mv.as_mv.row);
- sum_mvc += mv.as_mv.col;
- sum_mvc_abs += abs(mv.as_mv.col);
- sum_mvrs += mv.as_mv.row * mv.as_mv.row;
- sum_mvcs += mv.as_mv.col * mv.as_mv.col;
+ sum_mvr += mv.row;
+ sum_mvr_abs += abs(mv.row);
+ sum_mvc += mv.col;
+ sum_mvc_abs += abs(mv.col);
+ sum_mvrs += mv.row * mv.row;
+ sum_mvcs += mv.col * mv.col;
++intercount;
- best_ref_mv.as_int = mv.as_int;
+ best_ref_mv = mv;
+
+#if CONFIG_FP_MB_STATS
+ if (cpi->use_fp_mb_stats) {
+ // inter predication statistics
+ cpi->twopass.frame_mb_stats_buf[mb_index] = 0;
+ cpi->twopass.frame_mb_stats_buf[mb_index] &= ~FPMB_DCINTRA_MASK;
+ cpi->twopass.frame_mb_stats_buf[mb_index] |= FPMB_MOTION_ZERO_MASK;
+ if (this_error > FPMB_ERROR_LARGE_TH) {
+ cpi->twopass.frame_mb_stats_buf[mb_index] |=
+ FPMB_ERROR_LARGE_MASK;
+ } else if (this_error < FPMB_ERROR_SMALL_TH) {
+ cpi->twopass.frame_mb_stats_buf[mb_index] |=
+ FPMB_ERROR_SMALL_MASK;
+ }
+ }
+#endif
- if (mv.as_int) {
+ if (!is_zero_mv(&mv)) {
++mvcount;
+#if CONFIG_FP_MB_STATS
+ if (cpi->use_fp_mb_stats) {
+ cpi->twopass.frame_mb_stats_buf[mb_index] &=
+ ~FPMB_MOTION_ZERO_MASK;
+ // check estimated motion direction
+ if (mv.as_mv.col > 0 && mv.as_mv.col >= abs(mv.as_mv.row)) {
+ // right direction
+ cpi->twopass.frame_mb_stats_buf[mb_index] |=
+ FPMB_MOTION_RIGHT_MASK;
+ } else if (mv.as_mv.row < 0 &&
+ abs(mv.as_mv.row) >= abs(mv.as_mv.col)) {
+ // up direction
+ cpi->twopass.frame_mb_stats_buf[mb_index] |=
+ FPMB_MOTION_UP_MASK;
+ } else if (mv.as_mv.col < 0 &&
+ abs(mv.as_mv.col) >= abs(mv.as_mv.row)) {
+ // left direction
+ cpi->twopass.frame_mb_stats_buf[mb_index] |=
+ FPMB_MOTION_LEFT_MASK;
+ } else {
+ // down direction
+ cpi->twopass.frame_mb_stats_buf[mb_index] |=
+ FPMB_MOTION_DOWN_MASK;
+ }
+ }
+#endif
+
// Non-zero vector, was it different from the last non zero vector?
- if (mv.as_int != lastmv_as_int)
+ if (!is_equal_mv(&mv, &lastmv))
++new_mv_count;
- lastmv_as_int = mv.as_int;
+ lastmv = mv;
// Does the row vector point inwards or outwards?
if (mb_row < cm->mb_rows / 2) {
- if (mv.as_mv.row > 0)
+ if (mv.row > 0)
--sum_in_vectors;
- else if (mv.as_mv.row < 0)
+ else if (mv.row < 0)
++sum_in_vectors;
} else if (mb_row > cm->mb_rows / 2) {
- if (mv.as_mv.row > 0)
+ if (mv.row > 0)
++sum_in_vectors;
- else if (mv.as_mv.row < 0)
+ else if (mv.row < 0)
--sum_in_vectors;
}
// Does the col vector point inwards or outwards?
if (mb_col < cm->mb_cols / 2) {
- if (mv.as_mv.col > 0)
+ if (mv.col > 0)
--sum_in_vectors;
- else if (mv.as_mv.col < 0)
+ else if (mv.col < 0)
++sum_in_vectors;
} else if (mb_col > cm->mb_cols / 2) {
- if (mv.as_mv.col > 0)
+ if (mv.col > 0)
++sum_in_vectors;
- else if (mv.as_mv.col < 0)
+ else if (mv.col < 0)
--sum_in_vectors;
}
}
vp9_clear_system_state();
{
FIRSTPASS_STATS fps;
+ // The minimum error here insures some bit alocation to frames even
+ // in static regions. The allocation per MB declines for larger formats
+ // where the typical "real" energy per MB also falls.
+ // Initial estimate here uses sqrt(mbs) to define the min_err, where the
+ // number of mbs is propotional to image area.
+ const double min_err = 200 * sqrt(cm->MBs);
fps.frame = cm->current_video_frame;
fps.spatial_layer_id = cpi->svc.spatial_layer_id;
- fps.intra_error = (double)(intra_error >> 8);
- fps.coded_error = (double)(coded_error >> 8);
- fps.sr_coded_error = (double)(sr_coded_error >> 8);
- fps.ssim_weighted_pred_err = fps.coded_error * simple_weight(cpi->Source);
+ fps.coded_error = (double)(coded_error >> 8) + min_err;
+ fps.sr_coded_error = (double)(sr_coded_error >> 8) + min_err;
+ fps.intra_error = (double)(intra_error >> 8) + min_err;
fps.count = 1.0;
fps.pcnt_inter = (double)intercount / cm->MBs;
fps.pcnt_second_ref = (double)second_ref_count / cm->MBs;
// TODO(paulwilkins): Handle the case when duration is set to 0, or
// something less than the full time between subsequent values of
// cpi->source_time_stamp.
- fps.duration = (double)(cpi->source->ts_end - cpi->source->ts_start);
+ fps.duration = (double)(source->ts_end - source->ts_start);
// Don't want to do output stats with a stack variable!
twopass->this_frame_stats = fps;
output_stats(&twopass->this_frame_stats, cpi->output_pkt_list);
accumulate_stats(&twopass->total_stats, &fps);
+
+#if CONFIG_FP_MB_STATS
+ if (cpi->use_fp_mb_stats) {
+ output_fpmb_stats(twopass->frame_mb_stats_buf, cm, cpi->output_pkt_list);
+ }
+#endif
}
// Copy the previous Last Frame back into gf and and arf buffers if
vp9_extend_frame_borders(new_yv12);
- if (cpi->use_svc && cpi->svc.number_temporal_layers == 1) {
+ if (lc != NULL) {
vp9_update_reference_frames(cpi);
} else {
// Swap frame pointers so last frame refers to the frame we just compressed.
// Special case for the first frame. Copy into the GF buffer as a second
// reference.
- if (cm->current_video_frame == 0 && gld_yv12 != NULL) {
+ if (cm->current_video_frame == 0 && gld_yv12 != NULL && lc == NULL) {
vp8_yv12_copy_frame(lst_yv12, gld_yv12);
}
}
++cm->current_video_frame;
+ if (cpi->use_svc)
+ vp9_inc_frame_in_layer(cpi);
}
static double calc_correction_factor(double err_per_mb,
double err_divisor,
double pt_low,
double pt_high,
- int q) {
+ int q,
+ vpx_bit_depth_t bit_depth) {
const double error_term = err_per_mb / err_divisor;
// Adjustment based on actual quantizer to power term.
- const double power_term = MIN(vp9_convert_qindex_to_q(q) * 0.0125 + pt_low,
- pt_high);
+ const double power_term =
+ MIN(vp9_convert_qindex_to_q(q, bit_depth) * 0.01 + pt_low, pt_high);
// Calculate correction factor.
if (power_term < 1.0)
return fclamp(pow(error_term, power_term), 0.05, 5.0);
}
+// Larger image formats are expected to be a little harder to code relatively
+// given the same prediction error score. This in part at least relates to the
+// increased size and hence coding cost of motion vectors.
+#define EDIV_SIZE_FACTOR 800
+
static int get_twopass_worst_quality(const VP9_COMP *cpi,
const FIRSTPASS_STATS *stats,
int section_target_bandwidth) {
const double section_err = stats->coded_error / stats->count;
const double err_per_mb = section_err / num_mbs;
const double speed_term = 1.0 + 0.04 * oxcf->speed;
+ const double ediv_size_correction = num_mbs / EDIV_SIZE_FACTOR;
const int target_norm_bits_per_mb = ((uint64_t)section_target_bandwidth <<
- BPER_MB_NORMBITS) / num_mbs;
+ BPER_MB_NORMBITS) / num_mbs;
+
int q;
int is_svc_upper_layer = 0;
- if (cpi->use_svc && cpi->svc.number_temporal_layers == 1 &&
- cpi->svc.spatial_layer_id > 0) {
+ if (is_two_pass_svc(cpi) && cpi->svc.spatial_layer_id > 0)
is_svc_upper_layer = 1;
- }
// Try and pick a max Q that will be high enough to encode the
// content at the given rate.
for (q = rc->best_quality; q < rc->worst_quality; ++q) {
const double factor =
- calc_correction_factor(err_per_mb, ERR_DIVISOR,
- is_svc_upper_layer ? 0.8 : 0.5,
- is_svc_upper_layer ? 1.0 : 0.90, q);
+ calc_correction_factor(err_per_mb, ERR_DIVISOR - ediv_size_correction,
+ is_svc_upper_layer ? SVC_FACTOR_PT_LOW :
+ FACTOR_PT_LOW, FACTOR_PT_HIGH, q,
+ cpi->common.bit_depth);
const int bits_per_mb = vp9_rc_bits_per_mb(INTER_FRAME, q,
- factor * speed_term);
+ factor * speed_term,
+ cpi->common.bit_depth);
if (bits_per_mb <= target_norm_bits_per_mb)
break;
}
// Restriction on active max q for constrained quality mode.
- if (cpi->oxcf.rc_mode == RC_MODE_CONSTRAINED_QUALITY)
+ if (cpi->oxcf.rc_mode == VPX_CQ)
q = MAX(q, oxcf->cq_level);
return q;
}
void vp9_init_second_pass(VP9_COMP *cpi) {
SVC *const svc = &cpi->svc;
const VP9EncoderConfig *const oxcf = &cpi->oxcf;
- const int is_spatial_svc = (svc->number_spatial_layers > 1) &&
- (svc->number_temporal_layers == 1);
- struct twopass_rc *const twopass = is_spatial_svc ?
+ const int is_two_pass_svc = (svc->number_spatial_layers > 1) ||
+ (svc->number_temporal_layers > 1);
+ TWO_PASS *const twopass = is_two_pass_svc ?
&svc->layer_context[svc->spatial_layer_id].twopass : &cpi->twopass;
double frame_rate;
FIRSTPASS_STATS *stats;
// It is calculated based on the actual durations of all frames from the
// first pass.
- if (is_spatial_svc) {
+ if (is_two_pass_svc) {
vp9_update_spatial_layer_framerate(cpi, frame_rate);
twopass->bits_left = (int64_t)(stats->duration *
svc->layer_context[svc->spatial_layer_id].target_bandwidth /
10000000.0);
}
- // Calculate a minimum intra value to be used in determining the IIratio
- // scores used in the second pass. We have this minimum to make sure
- // that clips that are static but "low complexity" in the intra domain
- // are still boosted appropriately for KF/GF/ARF.
- if (!is_spatial_svc) {
- // We don't know the number of MBs for each layer at this point.
- // So we will do it later.
- twopass->kf_intra_err_min = KF_MB_INTRA_MIN * cpi->common.MBs;
- twopass->gf_intra_err_min = GF_MB_INTRA_MIN * cpi->common.MBs;
- }
-
// This variable monitors how far behind the second ref update is lagging.
twopass->sr_update_lag = 1;
- // Scan the first pass file and calculate an average Intra / Inter error
- // score ratio for the sequence.
- {
- const FIRSTPASS_STATS *const start_pos = twopass->stats_in;
- FIRSTPASS_STATS this_frame;
- double sum_iiratio = 0.0;
-
- while (input_stats(twopass, &this_frame) != EOF) {
- const double iiratio = this_frame.intra_error /
- DOUBLE_DIVIDE_CHECK(this_frame.coded_error);
- sum_iiratio += fclamp(iiratio, 1.0, 20.0);
- }
-
- twopass->avg_iiratio = sum_iiratio /
- DOUBLE_DIVIDE_CHECK((double)stats->count);
-
- reset_fpf_position(twopass, start_pos);
- }
-
// Scan the first pass file and calculate a modified total error based upon
// the bias/power function used to allocate bits.
{
- const FIRSTPASS_STATS *const start_pos = twopass->stats_in;
- FIRSTPASS_STATS this_frame;
- const double av_error = stats->ssim_weighted_pred_err /
- DOUBLE_DIVIDE_CHECK(stats->count);
-
-
- twopass->modified_error_total = 0.0;
- twopass->modified_error_min =
- (av_error * oxcf->two_pass_vbrmin_section) / 100;
- twopass->modified_error_max =
- (av_error * oxcf->two_pass_vbrmax_section) / 100;
-
- while (input_stats(twopass, &this_frame) != EOF) {
- twopass->modified_error_total +=
- calculate_modified_err(cpi, &this_frame);
+ const double avg_error = stats->coded_error /
+ DOUBLE_DIVIDE_CHECK(stats->count);
+ const FIRSTPASS_STATS *s = twopass->stats_in;
+ double modified_error_total = 0.0;
+ twopass->modified_error_min = (avg_error *
+ oxcf->two_pass_vbrmin_section) / 100;
+ twopass->modified_error_max = (avg_error *
+ oxcf->two_pass_vbrmax_section) / 100;
+ while (s < twopass->stats_in_end) {
+ modified_error_total += calculate_modified_err(twopass, oxcf, s);
+ ++s;
}
- twopass->modified_error_left = twopass->modified_error_total;
-
- reset_fpf_position(twopass, start_pos);
+ twopass->modified_error_left = modified_error_total;
}
// Reset the vbr bits off target counter
cpi->rc.vbr_bits_off_target = 0;
+
+ cpi->rc.rate_error_estimate = 0;
+
+ // Static sequence monitor variables.
+ twopass->kf_zeromotion_pct = 100;
+ twopass->last_kfgroup_zeromotion_pct = 100;
+}
+
+#define SR_DIFF_PART 0.0015
+#define MOTION_AMP_PART 0.003
+#define INTRA_PART 0.005
+#define DEFAULT_DECAY_LIMIT 0.75
+#define LOW_SR_DIFF_TRHESH 0.1
+#define SR_DIFF_MAX 128.0
+
+static double get_sr_decay_rate(const VP9_COMMON *cm,
+ const FIRSTPASS_STATS *frame) {
+ double sr_diff = (frame->sr_coded_error - frame->coded_error) / cm->MBs;
+ double sr_decay = 1.0;
+ const double motion_amplitude_factor =
+ frame->pcnt_motion * ((frame->mvc_abs + frame->mvr_abs) / 2);
+ const double pcnt_intra = 100 * (1.0 - frame->pcnt_inter);
+
+ if ((sr_diff > LOW_SR_DIFF_TRHESH)) {
+ sr_diff = MIN(sr_diff, SR_DIFF_MAX);
+ sr_decay = 1.0 - (SR_DIFF_PART * sr_diff) -
+ (MOTION_AMP_PART * motion_amplitude_factor) -
+ (INTRA_PART * pcnt_intra);
+ }
+ return MAX(sr_decay, MIN(DEFAULT_DECAY_LIMIT, frame->pcnt_inter));
}
// This function gives an estimate of how badly we believe the prediction
// quality is decaying from frame to frame.
+static double get_zero_motion_factor(const VP9_COMMON *cm,
+ const FIRSTPASS_STATS *frame) {
+ const double zero_motion_pct = frame->pcnt_inter -
+ frame->pcnt_motion;
+ double sr_decay = get_sr_decay_rate(cm, frame);
+ return MIN(sr_decay, zero_motion_pct);
+}
+
+#define ZM_POWER_FACTOR 0.75
+
static double get_prediction_decay_rate(const VP9_COMMON *cm,
const FIRSTPASS_STATS *next_frame) {
- // Look at the observed drop in prediction quality between the last frame
- // and the GF buffer (which contains an older frame).
- const double mb_sr_err_diff = (next_frame->sr_coded_error -
- next_frame->coded_error) / cm->MBs;
- const double second_ref_decay = mb_sr_err_diff <= 512.0
- ? fclamp(pow(1.0 - (mb_sr_err_diff / 512.0), 0.5), 0.85, 1.0)
- : 0.85;
-
- return MIN(second_ref_decay, next_frame->pcnt_inter);
+ const double sr_decay_rate = get_sr_decay_rate(cm, next_frame);
+ const double zero_motion_factor =
+ (0.95 * pow((next_frame->pcnt_inter - next_frame->pcnt_motion),
+ ZM_POWER_FACTOR));
+
+ return MAX(zero_motion_factor,
+ (sr_decay_rate + ((1.0 - sr_decay_rate) * zero_motion_factor)));
}
// Function to test for a condition where a complex transition is followed
// by a static section. For example in slide shows where there is a fade
// between slides. This is to help with more optimal kf and gf positioning.
-static int detect_transition_to_still(struct twopass_rc *twopass,
+static int detect_transition_to_still(const TWO_PASS *twopass,
int frame_interval, int still_interval,
double loop_decay_rate,
double last_decay_rate) {
- int trans_to_still = 0;
-
// Break clause to detect very still sections after motion
// For example a static image after a fade or other transition
// instead of a clean scene cut.
loop_decay_rate >= 0.999 &&
last_decay_rate < 0.9) {
int j;
- const FIRSTPASS_STATS *position = twopass->stats_in;
- FIRSTPASS_STATS tmp_next_frame;
// Look ahead a few frames to see if static condition persists...
for (j = 0; j < still_interval; ++j) {
- if (EOF == input_stats(twopass, &tmp_next_frame))
+ const FIRSTPASS_STATS *stats = &twopass->stats_in[j];
+ if (stats >= twopass->stats_in_end)
break;
- if (tmp_next_frame.pcnt_inter - tmp_next_frame.pcnt_motion < 0.999)
+ if (stats->pcnt_inter - stats->pcnt_motion < 0.999)
break;
}
- reset_fpf_position(twopass, position);
-
// Only if it does do we signal a transition to still.
- if (j == still_interval)
- trans_to_still = 1;
+ return j == still_interval;
}
- return trans_to_still;
+ return 0;
}
// This function detects a flash through the high relative pcnt_second_ref
// score in the frame following a flash frame. The offset passed in should
// reflect this.
-static int detect_flash(const struct twopass_rc *twopass, int offset) {
- FIRSTPASS_STATS next_frame;
-
- int flash_detected = 0;
-
- // Read the frame data.
- // The return is FALSE (no flash detected) if not a valid frame
- if (read_frame_stats(twopass, &next_frame, offset) != EOF) {
- // What we are looking for here is a situation where there is a
- // brief break in prediction (such as a flash) but subsequent frames
- // are reasonably well predicted by an earlier (pre flash) frame.
- // The recovery after a flash is indicated by a high pcnt_second_ref
- // compared to pcnt_inter.
- if (next_frame.pcnt_second_ref > next_frame.pcnt_inter &&
- next_frame.pcnt_second_ref >= 0.5)
- flash_detected = 1;
- }
-
- return flash_detected;
+static int detect_flash(const TWO_PASS *twopass, int offset) {
+ const FIRSTPASS_STATS *const next_frame = read_frame_stats(twopass, offset);
+
+ // What we are looking for here is a situation where there is a
+ // brief break in prediction (such as a flash) but subsequent frames
+ // are reasonably well predicted by an earlier (pre flash) frame.
+ // The recovery after a flash is indicated by a high pcnt_second_ref
+ // compared to pcnt_inter.
+ return next_frame != NULL &&
+ next_frame->pcnt_second_ref > next_frame->pcnt_inter &&
+ next_frame->pcnt_second_ref >= 0.5;
}
// Update the motion related elements to the GF arf boost calculation.
-static void accumulate_frame_motion_stats(
- FIRSTPASS_STATS *this_frame,
- double *this_frame_mv_in_out,
- double *mv_in_out_accumulator,
- double *abs_mv_in_out_accumulator,
- double *mv_ratio_accumulator) {
- double motion_pct;
-
- // Accumulate motion stats.
- motion_pct = this_frame->pcnt_motion;
+static void accumulate_frame_motion_stats(const FIRSTPASS_STATS *stats,
+ double *mv_in_out,
+ double *mv_in_out_accumulator,
+ double *abs_mv_in_out_accumulator,
+ double *mv_ratio_accumulator) {
+ const double pct = stats->pcnt_motion;
// Accumulate Motion In/Out of frame stats.
- *this_frame_mv_in_out = this_frame->mv_in_out_count * motion_pct;
- *mv_in_out_accumulator += this_frame->mv_in_out_count * motion_pct;
- *abs_mv_in_out_accumulator += fabs(this_frame->mv_in_out_count * motion_pct);
-
- // Accumulate a measure of how uniform (or conversely how random)
- // the motion field is (a ratio of absmv / mv).
- if (motion_pct > 0.05) {
- const double this_frame_mvr_ratio = fabs(this_frame->mvr_abs) /
- DOUBLE_DIVIDE_CHECK(fabs(this_frame->MVr));
-
- const double this_frame_mvc_ratio = fabs(this_frame->mvc_abs) /
- DOUBLE_DIVIDE_CHECK(fabs(this_frame->MVc));
-
- *mv_ratio_accumulator += (this_frame_mvr_ratio < this_frame->mvr_abs)
- ? (this_frame_mvr_ratio * motion_pct)
- : this_frame->mvr_abs * motion_pct;
-
- *mv_ratio_accumulator += (this_frame_mvc_ratio < this_frame->mvc_abs)
- ? (this_frame_mvc_ratio * motion_pct)
- : this_frame->mvc_abs * motion_pct;
+ *mv_in_out = stats->mv_in_out_count * pct;
+ *mv_in_out_accumulator += *mv_in_out;
+ *abs_mv_in_out_accumulator += fabs(*mv_in_out);
+
+ // Accumulate a measure of how uniform (or conversely how random) the motion
+ // field is (a ratio of abs(mv) / mv).
+ if (pct > 0.05) {
+ const double mvr_ratio = fabs(stats->mvr_abs) /
+ DOUBLE_DIVIDE_CHECK(fabs(stats->MVr));
+ const double mvc_ratio = fabs(stats->mvc_abs) /
+ DOUBLE_DIVIDE_CHECK(fabs(stats->MVc));
+
+ *mv_ratio_accumulator += pct * (mvr_ratio < stats->mvr_abs ?
+ mvr_ratio : stats->mvr_abs);
+ *mv_ratio_accumulator += pct * (mvc_ratio < stats->mvc_abs ?
+ mvc_ratio : stats->mvc_abs);
}
}
-// Calculate a baseline boost number for the current frame.
-static double calc_frame_boost(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame,
- double this_frame_mv_in_out) {
+#define BASELINE_ERR_PER_MB 1000.0
+static double calc_frame_boost(VP9_COMP *cpi,
+ const FIRSTPASS_STATS *this_frame,
+ double this_frame_mv_in_out,
+ double max_boost) {
double frame_boost;
+ const double lq =
+ vp9_convert_qindex_to_q(cpi->rc.avg_frame_qindex[INTER_FRAME],
+ cpi->common.bit_depth);
+ const double boost_correction = MIN((0.5 + (lq * 0.015)), 1.5);
- // Underlying boost factor is based on inter intra error ratio.
- if (this_frame->intra_error > cpi->twopass.gf_intra_err_min)
- frame_boost = (IIFACTOR * this_frame->intra_error /
- DOUBLE_DIVIDE_CHECK(this_frame->coded_error));
- else
- frame_boost = (IIFACTOR * cpi->twopass.gf_intra_err_min /
- DOUBLE_DIVIDE_CHECK(this_frame->coded_error));
+ // Underlying boost factor is based on inter error ratio.
+ frame_boost = (BASELINE_ERR_PER_MB * cpi->common.MBs) /
+ DOUBLE_DIVIDE_CHECK(this_frame->coded_error);
+ frame_boost = frame_boost * BOOST_FACTOR * boost_correction;
// Increase boost for frames where new data coming into frame (e.g. zoom out).
// Slightly reduce boost if there is a net balance of motion out of the frame
else
frame_boost += frame_boost * (this_frame_mv_in_out / 2.0);
- return MIN(frame_boost, GF_RMAX);
+ return MIN(frame_boost, max_boost * boost_correction);
}
static int calc_arf_boost(VP9_COMP *cpi, int offset,
int f_frames, int b_frames,
int *f_boost, int *b_boost) {
- FIRSTPASS_STATS this_frame;
- struct twopass_rc *const twopass = &cpi->twopass;
+ TWO_PASS *const twopass = &cpi->twopass;
int i;
double boost_score = 0.0;
double mv_ratio_accumulator = 0.0;
// Search forward from the proposed arf/next gf position.
for (i = 0; i < f_frames; ++i) {
- if (read_frame_stats(twopass, &this_frame, (i + offset)) == EOF)
+ const FIRSTPASS_STATS *this_frame = read_frame_stats(twopass, i + offset);
+ if (this_frame == NULL)
break;
// Update the motion related elements to the boost calculation.
- accumulate_frame_motion_stats(&this_frame,
+ accumulate_frame_motion_stats(this_frame,
&this_frame_mv_in_out, &mv_in_out_accumulator,
&abs_mv_in_out_accumulator,
&mv_ratio_accumulator);
// Accumulate the effect of prediction quality decay.
if (!flash_detected) {
- decay_accumulator *= get_prediction_decay_rate(&cpi->common, &this_frame);
+ decay_accumulator *= get_prediction_decay_rate(&cpi->common, this_frame);
decay_accumulator = decay_accumulator < MIN_DECAY_FACTOR
? MIN_DECAY_FACTOR : decay_accumulator;
}
- boost_score += (decay_accumulator *
- calc_frame_boost(cpi, &this_frame, this_frame_mv_in_out));
+ boost_score += decay_accumulator * calc_frame_boost(cpi, this_frame,
+ this_frame_mv_in_out,
+ GF_MAX_BOOST);
}
*f_boost = (int)boost_score;
// Search backward towards last gf position.
for (i = -1; i >= -b_frames; --i) {
- if (read_frame_stats(twopass, &this_frame, (i + offset)) == EOF)
+ const FIRSTPASS_STATS *this_frame = read_frame_stats(twopass, i + offset);
+ if (this_frame == NULL)
break;
// Update the motion related elements to the boost calculation.
- accumulate_frame_motion_stats(&this_frame,
+ accumulate_frame_motion_stats(this_frame,
&this_frame_mv_in_out, &mv_in_out_accumulator,
&abs_mv_in_out_accumulator,
&mv_ratio_accumulator);
// Cumulative effect of prediction quality decay.
if (!flash_detected) {
- decay_accumulator *= get_prediction_decay_rate(&cpi->common, &this_frame);
+ decay_accumulator *= get_prediction_decay_rate(&cpi->common, this_frame);
decay_accumulator = decay_accumulator < MIN_DECAY_FACTOR
? MIN_DECAY_FACTOR : decay_accumulator;
}
- boost_score += (decay_accumulator *
- calc_frame_boost(cpi, &this_frame, this_frame_mv_in_out));
+ boost_score += decay_accumulator * calc_frame_boost(cpi, this_frame,
+ this_frame_mv_in_out,
+ GF_MAX_BOOST);
}
*b_boost = (int)boost_score;
arf_boost = (*f_boost + *b_boost);
if (arf_boost < ((b_frames + f_frames) * 20))
arf_boost = ((b_frames + f_frames) * 20);
+ arf_boost = MAX(arf_boost, MIN_ARF_GF_BOOST);
return arf_boost;
}
-#if CONFIG_MULTIPLE_ARF
-// Work out the frame coding order for a GF or an ARF group.
-// The current implementation codes frames in their natural order for a
-// GF group, and inserts additional ARFs into an ARF group using a
-// binary split approach.
-// NOTE: this function is currently implemented recursively.
-static void schedule_frames(VP9_COMP *cpi, const int start, const int end,
- const int arf_idx, const int gf_or_arf_group,
- const int level) {
- int i, abs_end, half_range;
- int *cfo = cpi->frame_coding_order;
- int idx = cpi->new_frame_coding_order_period;
-
- // If (end < 0) an ARF should be coded at position (-end).
- assert(start >= 0);
-
- // printf("start:%d end:%d\n", start, end);
-
- // GF Group: code frames in logical order.
- if (gf_or_arf_group == 0) {
- assert(end >= start);
- for (i = start; i <= end; ++i) {
- cfo[idx] = i;
- cpi->arf_buffer_idx[idx] = arf_idx;
- cpi->arf_weight[idx] = -1;
- ++idx;
- }
- cpi->new_frame_coding_order_period = idx;
- return;
- }
-
- // ARF Group: Work out the ARF schedule and mark ARF frames as negative.
- if (end < 0) {
- // printf("start:%d end:%d\n", -end, -end);
- // ARF frame is at the end of the range.
- cfo[idx] = end;
- // What ARF buffer does this ARF use as predictor.
- cpi->arf_buffer_idx[idx] = (arf_idx > 2) ? (arf_idx - 1) : 2;
- cpi->arf_weight[idx] = level;
- ++idx;
- abs_end = -end;
- } else {
- abs_end = end;
- }
-
- half_range = (abs_end - start) >> 1;
-
- // ARFs may not be adjacent, they must be separated by at least
- // MIN_GF_INTERVAL non-ARF frames.
- if ((start + MIN_GF_INTERVAL) >= (abs_end - MIN_GF_INTERVAL)) {
- // printf("start:%d end:%d\n", start, abs_end);
- // Update the coding order and active ARF.
- for (i = start; i <= abs_end; ++i) {
- cfo[idx] = i;
- cpi->arf_buffer_idx[idx] = arf_idx;
- cpi->arf_weight[idx] = -1;
- ++idx;
- }
- cpi->new_frame_coding_order_period = idx;
- } else {
- // Place a new ARF at the mid-point of the range.
- cpi->new_frame_coding_order_period = idx;
- schedule_frames(cpi, start, -(start + half_range), arf_idx + 1,
- gf_or_arf_group, level + 1);
- schedule_frames(cpi, start + half_range + 1, abs_end, arf_idx,
- gf_or_arf_group, level + 1);
- }
-}
-
-#define FIXED_ARF_GROUP_SIZE 16
-
-void define_fixed_arf_period(VP9_COMP *cpi) {
- int i;
- int max_level = INT_MIN;
-
- assert(cpi->multi_arf_enabled);
- assert(cpi->oxcf.lag_in_frames >= FIXED_ARF_GROUP_SIZE);
-
- // Save the weight of the last frame in the sequence before next
- // sequence pattern overwrites it.
- cpi->this_frame_weight = cpi->arf_weight[cpi->sequence_number];
- assert(cpi->this_frame_weight >= 0);
-
- cpi->twopass.gf_zeromotion_pct = 0;
-
- // Initialize frame coding order variables.
- cpi->new_frame_coding_order_period = 0;
- cpi->next_frame_in_order = 0;
- cpi->arf_buffered = 0;
- vp9_zero(cpi->frame_coding_order);
- vp9_zero(cpi->arf_buffer_idx);
- vpx_memset(cpi->arf_weight, -1, sizeof(cpi->arf_weight));
-
- if (cpi->rc.frames_to_key <= (FIXED_ARF_GROUP_SIZE + 8)) {
- // Setup a GF group close to the keyframe.
- cpi->rc.source_alt_ref_pending = 0;
- cpi->rc.baseline_gf_interval = cpi->rc.frames_to_key;
- schedule_frames(cpi, 0, (cpi->rc.baseline_gf_interval - 1), 2, 0, 0);
- } else {
- // Setup a fixed period ARF group.
- cpi->rc.source_alt_ref_pending = 1;
- cpi->rc.baseline_gf_interval = FIXED_ARF_GROUP_SIZE;
- schedule_frames(cpi, 0, -(cpi->rc.baseline_gf_interval - 1), 2, 1, 0);
- }
-
- // Replace level indicator of -1 with correct level.
- for (i = 0; i < cpi->new_frame_coding_order_period; ++i) {
- if (cpi->arf_weight[i] > max_level) {
- max_level = cpi->arf_weight[i];
- }
- }
- ++max_level;
- for (i = 0; i < cpi->new_frame_coding_order_period; ++i) {
- if (cpi->arf_weight[i] == -1) {
- cpi->arf_weight[i] = max_level;
- }
- }
- cpi->max_arf_level = max_level;
-#if 0
- printf("\nSchedule: ");
- for (i = 0; i < cpi->new_frame_coding_order_period; ++i) {
- printf("%4d ", cpi->frame_coding_order[i]);
- }
- printf("\n");
- printf("ARFref: ");
- for (i = 0; i < cpi->new_frame_coding_order_period; ++i) {
- printf("%4d ", cpi->arf_buffer_idx[i]);
- }
- printf("\n");
- printf("Weight: ");
- for (i = 0; i < cpi->new_frame_coding_order_period; ++i) {
- printf("%4d ", cpi->arf_weight[i]);
- }
- printf("\n");
-#endif
-}
-#endif
-
// Calculate a section intra ratio used in setting max loop filter.
-static void calculate_section_intra_ratio(struct twopass_rc *twopass,
- const FIRSTPASS_STATS *start_pos,
- int section_length) {
- FIRSTPASS_STATS next_frame;
- FIRSTPASS_STATS sectionstats;
- int i;
-
- vp9_zero(next_frame);
- vp9_zero(sectionstats);
-
- reset_fpf_position(twopass, start_pos);
-
- for (i = 0; i < section_length; ++i) {
- input_stats(twopass, &next_frame);
- accumulate_stats(§ionstats, &next_frame);
+static int calculate_section_intra_ratio(const FIRSTPASS_STATS *begin,
+ const FIRSTPASS_STATS *end,
+ int section_length) {
+ const FIRSTPASS_STATS *s = begin;
+ double intra_error = 0.0;
+ double coded_error = 0.0;
+ int i = 0;
+
+ while (s < end && i < section_length) {
+ intra_error += s->intra_error;
+ coded_error += s->coded_error;
+ ++s;
+ ++i;
}
- avg_stats(§ionstats);
-
- twopass->section_intra_rating =
- (int)(sectionstats.intra_error /
- DOUBLE_DIVIDE_CHECK(sectionstats.coded_error));
-
- reset_fpf_position(twopass, start_pos);
+ return (int)(intra_error / DOUBLE_DIVIDE_CHECK(coded_error));
}
// Calculate the total bits to allocate in this GF/ARF group.
static int64_t calculate_total_gf_group_bits(VP9_COMP *cpi,
double gf_group_err) {
const RATE_CONTROL *const rc = &cpi->rc;
- const struct twopass_rc *const twopass = &cpi->twopass;
+ const TWO_PASS *const twopass = &cpi->twopass;
const int max_bits = frame_max_bits(rc, &cpi->oxcf);
int64_t total_group_bits;
return MAX((int)(((int64_t)boost * total_group_bits) / allocation_chunks), 0);
}
+// Current limit on maximum number of active arfs in a GF/ARF group.
+#define MAX_ACTIVE_ARFS 2
+#define ARF_SLOT1 2
+#define ARF_SLOT2 3
+// This function indirects the choice of buffers for arfs.
+// At the moment the values are fixed but this may change as part of
+// the integration process with other codec features that swap buffers around.
+static void get_arf_buffer_indices(unsigned char *arf_buffer_indices) {
+ arf_buffer_indices[0] = ARF_SLOT1;
+ arf_buffer_indices[1] = ARF_SLOT2;
+}
+
+static void allocate_gf_group_bits(VP9_COMP *cpi, int64_t gf_group_bits,
+ double group_error, int gf_arf_bits) {
+ RATE_CONTROL *const rc = &cpi->rc;
+ const VP9EncoderConfig *const oxcf = &cpi->oxcf;
+ TWO_PASS *const twopass = &cpi->twopass;
+ GF_GROUP *const gf_group = &twopass->gf_group;
+ FIRSTPASS_STATS frame_stats;
+ int i;
+ int frame_index = 1;
+ int target_frame_size;
+ int key_frame;
+ const int max_bits = frame_max_bits(&cpi->rc, &cpi->oxcf);
+ int64_t total_group_bits = gf_group_bits;
+ double modified_err = 0.0;
+ double err_fraction;
+ int mid_boost_bits = 0;
+ int mid_frame_idx;
+ unsigned char arf_buffer_indices[MAX_ACTIVE_ARFS];
+ int alt_frame_index = frame_index;
+ int has_temporal_layers = is_two_pass_svc(cpi) &&
+ cpi->svc.number_temporal_layers > 1;
+
+ // Only encode alt reference frame in temporal base layer.
+ if (has_temporal_layers)
+ alt_frame_index = cpi->svc.number_temporal_layers;
+
+ key_frame = cpi->common.frame_type == KEY_FRAME ||
+ vp9_is_upper_layer_key_frame(cpi);
+
+ get_arf_buffer_indices(arf_buffer_indices);
+
+ // For key frames the frame target rate is already set and it
+ // is also the golden frame.
+ if (!key_frame) {
+ if (rc->source_alt_ref_active) {
+ gf_group->update_type[0] = OVERLAY_UPDATE;
+ gf_group->rf_level[0] = INTER_NORMAL;
+ gf_group->bit_allocation[0] = 0;
+ gf_group->arf_update_idx[0] = arf_buffer_indices[0];
+ gf_group->arf_ref_idx[0] = arf_buffer_indices[0];
+ } else {
+ gf_group->update_type[0] = GF_UPDATE;
+ gf_group->rf_level[0] = GF_ARF_STD;
+ gf_group->bit_allocation[0] = gf_arf_bits;
+ gf_group->arf_update_idx[0] = arf_buffer_indices[0];
+ gf_group->arf_ref_idx[0] = arf_buffer_indices[0];
+ }
+
+ // Step over the golden frame / overlay frame
+ if (EOF == input_stats(twopass, &frame_stats))
+ return;
+ }
+
+ // Deduct the boost bits for arf (or gf if it is not a key frame)
+ // from the group total.
+ if (rc->source_alt_ref_pending || !key_frame)
+ total_group_bits -= gf_arf_bits;
+
+ // Store the bits to spend on the ARF if there is one.
+ if (rc->source_alt_ref_pending) {
+ gf_group->update_type[alt_frame_index] = ARF_UPDATE;
+ gf_group->rf_level[alt_frame_index] = GF_ARF_STD;
+ gf_group->bit_allocation[alt_frame_index] = gf_arf_bits;
+
+ if (has_temporal_layers)
+ gf_group->arf_src_offset[alt_frame_index] =
+ (unsigned char)(rc->baseline_gf_interval -
+ cpi->svc.number_temporal_layers);
+ else
+ gf_group->arf_src_offset[alt_frame_index] =
+ (unsigned char)(rc->baseline_gf_interval - 1);
+
+ gf_group->arf_update_idx[alt_frame_index] = arf_buffer_indices[0];
+ gf_group->arf_ref_idx[alt_frame_index] =
+ arf_buffer_indices[cpi->multi_arf_last_grp_enabled &&
+ rc->source_alt_ref_active];
+ if (!has_temporal_layers)
+ ++frame_index;
+
+ if (cpi->multi_arf_enabled) {
+ // Set aside a slot for a level 1 arf.
+ gf_group->update_type[frame_index] = ARF_UPDATE;
+ gf_group->rf_level[frame_index] = GF_ARF_LOW;
+ gf_group->arf_src_offset[frame_index] =
+ (unsigned char)((rc->baseline_gf_interval >> 1) - 1);
+ gf_group->arf_update_idx[frame_index] = arf_buffer_indices[1];
+ gf_group->arf_ref_idx[frame_index] = arf_buffer_indices[0];
+ ++frame_index;
+ }
+ }
+
+ // Define middle frame
+ mid_frame_idx = frame_index + (rc->baseline_gf_interval >> 1) - 1;
+
+ // Allocate bits to the other frames in the group.
+ for (i = 0; i < rc->baseline_gf_interval - 1; ++i) {
+ int arf_idx = 0;
+ if (EOF == input_stats(twopass, &frame_stats))
+ break;
+
+ if (has_temporal_layers && frame_index == alt_frame_index) {
+ ++frame_index;
+ }
+
+ modified_err = calculate_modified_err(twopass, oxcf, &frame_stats);
+
+ if (group_error > 0)
+ err_fraction = modified_err / DOUBLE_DIVIDE_CHECK(group_error);
+ else
+ err_fraction = 0.0;
+
+ target_frame_size = (int)((double)total_group_bits * err_fraction);
+
+ if (rc->source_alt_ref_pending && cpi->multi_arf_enabled) {
+ mid_boost_bits += (target_frame_size >> 4);
+ target_frame_size -= (target_frame_size >> 4);
+
+ if (frame_index <= mid_frame_idx)
+ arf_idx = 1;
+ }
+ gf_group->arf_update_idx[frame_index] = arf_buffer_indices[arf_idx];
+ gf_group->arf_ref_idx[frame_index] = arf_buffer_indices[arf_idx];
+
+ target_frame_size = clamp(target_frame_size, 0,
+ MIN(max_bits, (int)total_group_bits));
+
+ gf_group->update_type[frame_index] = LF_UPDATE;
+ gf_group->rf_level[frame_index] = INTER_NORMAL;
+
+ gf_group->bit_allocation[frame_index] = target_frame_size;
+ ++frame_index;
+ }
+
+ // Note:
+ // We need to configure the frame at the end of the sequence + 1 that will be
+ // the start frame for the next group. Otherwise prior to the call to
+ // vp9_rc_get_second_pass_params() the data will be undefined.
+ gf_group->arf_update_idx[frame_index] = arf_buffer_indices[0];
+ gf_group->arf_ref_idx[frame_index] = arf_buffer_indices[0];
+
+ if (rc->source_alt_ref_pending) {
+ gf_group->update_type[frame_index] = OVERLAY_UPDATE;
+ gf_group->rf_level[frame_index] = INTER_NORMAL;
+
+ // Final setup for second arf and its overlay.
+ if (cpi->multi_arf_enabled) {
+ gf_group->bit_allocation[2] =
+ gf_group->bit_allocation[mid_frame_idx] + mid_boost_bits;
+ gf_group->update_type[mid_frame_idx] = OVERLAY_UPDATE;
+ gf_group->bit_allocation[mid_frame_idx] = 0;
+ }
+ } else {
+ gf_group->update_type[frame_index] = GF_UPDATE;
+ gf_group->rf_level[frame_index] = GF_ARF_STD;
+ }
+
+ // Note whether multi-arf was enabled this group for next time.
+ cpi->multi_arf_last_grp_enabled = cpi->multi_arf_enabled;
+}
// Analyse and define a gf/arf group.
static void define_gf_group(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) {
RATE_CONTROL *const rc = &cpi->rc;
const VP9EncoderConfig *const oxcf = &cpi->oxcf;
- struct twopass_rc *const twopass = &cpi->twopass;
+ TWO_PASS *const twopass = &cpi->twopass;
FIRSTPASS_STATS next_frame;
- const FIRSTPASS_STATS *start_pos;
+ const FIRSTPASS_STATS *const start_pos = twopass->stats_in;
int i;
+
double boost_score = 0.0;
double old_boost_score = 0.0;
double gf_group_err = 0.0;
double mv_in_out_accumulator = 0.0;
double abs_mv_in_out_accumulator = 0.0;
double mv_ratio_accumulator_thresh;
- unsigned int allow_alt_ref = oxcf->play_alternate && oxcf->lag_in_frames;
+ unsigned int allow_alt_ref = is_altref_enabled(cpi);
int f_boost = 0;
int b_boost = 0;
int flash_detected;
int active_max_gf_interval;
+ int active_min_gf_interval;
+ int64_t gf_group_bits;
+ double gf_group_error_left;
+ int gf_arf_bits;
+
+ // Reset the GF group data structures unless this is a key
+ // frame in which case it will already have been done.
+ if (cpi->common.frame_type != KEY_FRAME) {
+ vp9_zero(twopass->gf_group);
+ }
vp9_clear_system_state();
vp9_zero(next_frame);
- twopass->gf_group_bits = 0;
- start_pos = twopass->stats_in;
-
// Load stats for the current frame.
- mod_frame_err = calculate_modified_err(cpi, this_frame);
+ mod_frame_err = calculate_modified_err(twopass, oxcf, this_frame);
// Note the error of the frame at the start of the group. This will be
// the GF frame error if we code a normal gf.
gf_group_err -= gf_first_frame_err;
// Motion breakout threshold for loop below depends on image size.
- mv_ratio_accumulator_thresh = (cpi->common.width + cpi->common.height) / 10.0;
-
- // Work out a maximum interval for the GF.
- // If the image appears completely static we can extend beyond this.
- // The value chosen depends on the active Q range. At low Q we have
- // bits to spare and are better with a smaller interval and smaller boost.
- // At high Q when there are few bits to spare we are better with a longer
- // interval to spread the cost of the GF.
- //
- active_max_gf_interval =
- 12 + ((int)vp9_convert_qindex_to_q(rc->last_q[INTER_FRAME]) >> 5);
+ mv_ratio_accumulator_thresh = (cpi->common.width + cpi->common.height) / 4.0;
- if (active_max_gf_interval > rc->max_gf_interval)
- active_max_gf_interval = rc->max_gf_interval;
+ // Set a maximum and minimum interval for the GF group.
+ // If the image appears almost completely static we can extend beyond this.
+ {
+ int int_max_q =
+ (int)(vp9_convert_qindex_to_q(twopass->active_worst_quality,
+ cpi->common.bit_depth));
+ int int_lbq =
+ (int)(vp9_convert_qindex_to_q(rc->last_boosted_qindex,
+ cpi->common.bit_depth));
+ active_min_gf_interval = MIN_GF_INTERVAL + MIN(2, int_max_q / 200);
+ if (active_min_gf_interval > rc->max_gf_interval)
+ active_min_gf_interval = rc->max_gf_interval;
+
+ if (cpi->multi_arf_allowed) {
+ active_max_gf_interval = rc->max_gf_interval;
+ } else {
+ // The value chosen depends on the active Q range. At low Q we have
+ // bits to spare and are better with a smaller interval and smaller boost.
+ // At high Q when there are few bits to spare we are better with a longer
+ // interval to spread the cost of the GF.
+ active_max_gf_interval = 12 + MIN(4, (int_lbq / 6));
+ if (active_max_gf_interval > rc->max_gf_interval)
+ active_max_gf_interval = rc->max_gf_interval;
+ }
+ }
i = 0;
while (i < rc->static_scene_max_gf_interval && i < rc->frames_to_key) {
++i;
// Accumulate error score of frames in this gf group.
- mod_frame_err = calculate_modified_err(cpi, this_frame);
+ mod_frame_err = calculate_modified_err(twopass, oxcf, this_frame);
gf_group_err += mod_frame_err;
if (EOF == input_stats(twopass, &next_frame))
if (!flash_detected) {
last_loop_decay_rate = loop_decay_rate;
loop_decay_rate = get_prediction_decay_rate(&cpi->common, &next_frame);
+
decay_accumulator = decay_accumulator * loop_decay_rate;
// Monitor for static sections.
- if ((next_frame.pcnt_inter - next_frame.pcnt_motion) <
- zero_motion_accumulator) {
- zero_motion_accumulator = next_frame.pcnt_inter -
- next_frame.pcnt_motion;
- }
+ zero_motion_accumulator =
+ MIN(zero_motion_accumulator,
+ get_zero_motion_factor(&cpi->common, &next_frame));
// Break clause to detect very still sections after motion. For example,
// a static image after a fade or other transition.
}
// Calculate a boost number for this frame.
- boost_score += (decay_accumulator *
- calc_frame_boost(cpi, &next_frame, this_frame_mv_in_out));
+ boost_score += decay_accumulator * calc_frame_boost(cpi, &next_frame,
+ this_frame_mv_in_out,
+ GF_MAX_BOOST);
// Break out conditions.
if (
- // Break at cpi->max_gf_interval unless almost totally static.
+ // Break at active_max_gf_interval unless almost totally static.
(i >= active_max_gf_interval && (zero_motion_accumulator < 0.995)) ||
(
// Don't break out with a very short interval.
- (i > MIN_GF_INTERVAL) &&
- ((boost_score > 125.0) || (next_frame.pcnt_inter < 0.75)) &&
+ (i > active_min_gf_interval) &&
(!flash_detected) &&
((mv_ratio_accumulator > mv_ratio_accumulator_thresh) ||
(abs_mv_in_out_accumulator > 3.0) ||
(mv_in_out_accumulator < -2.0) ||
- ((boost_score - old_boost_score) < IIFACTOR)))) {
+ ((boost_score - old_boost_score) < BOOST_BREAKOUT)))) {
boost_score = old_boost_score;
break;
}
*this_frame = next_frame;
-
old_boost_score = boost_score;
}
twopass->gf_zeromotion_pct = (int)(zero_motion_accumulator * 1000.0);
- // Don't allow a gf too near the next kf.
- if ((rc->frames_to_key - i) < MIN_GF_INTERVAL) {
- while (i < (rc->frames_to_key + !rc->next_key_frame_forced)) {
- ++i;
+ // Set the interval until the next gf.
+ if (cpi->common.frame_type == KEY_FRAME || rc->source_alt_ref_active)
+ rc->baseline_gf_interval = i - 1;
+ else
+ rc->baseline_gf_interval = i;
+ // Only encode alt reference frame in temporal base layer. So
+ // baseline_gf_interval should be multiple of a temporal layer group
+ // (typically the frame distance between two base layer frames)
+ if (is_two_pass_svc(cpi) && cpi->svc.number_temporal_layers > 1) {
+ int count = (1 << (cpi->svc.number_temporal_layers - 1)) - 1;
+ int new_gf_interval = (rc->baseline_gf_interval + count) & (~count);
+ int j;
+ for (j = 0; j < new_gf_interval - rc->baseline_gf_interval; ++j) {
if (EOF == input_stats(twopass, this_frame))
break;
-
- if (i < rc->frames_to_key) {
- mod_frame_err = calculate_modified_err(cpi, this_frame);
- gf_group_err += mod_frame_err;
- }
+ gf_group_err += calculate_modified_err(twopass, oxcf, this_frame);
}
+ rc->baseline_gf_interval = new_gf_interval;
}
-#if CONFIG_MULTIPLE_ARF
- if (cpi->multi_arf_enabled) {
- // Initialize frame coding order variables.
- cpi->new_frame_coding_order_period = 0;
- cpi->next_frame_in_order = 0;
- cpi->arf_buffered = 0;
- vp9_zero(cpi->frame_coding_order);
- vp9_zero(cpi->arf_buffer_idx);
- vpx_memset(cpi->arf_weight, -1, sizeof(cpi->arf_weight));
- }
-#endif
-
- // Set the interval until the next gf.
- if (cpi->common.frame_type == KEY_FRAME || rc->source_alt_ref_active)
- rc->baseline_gf_interval = i - 1;
- else
- rc->baseline_gf_interval = i;
+ rc->frames_till_gf_update_due = rc->baseline_gf_interval;
// Should we use the alternate reference frame.
if (allow_alt_ref &&
(i < cpi->oxcf.lag_in_frames) &&
- (i >= MIN_GF_INTERVAL) &&
- // For real scene cuts (not forced kfs) don't allow arf very near kf.
- (rc->next_key_frame_forced ||
- (i <= (rc->frames_to_key - MIN_GF_INTERVAL)))) {
+ (i >= MIN_GF_INTERVAL)) {
// Calculate the boost for alt ref.
rc->gfu_boost = calc_arf_boost(cpi, 0, (i - 1), (i - 1), &f_boost,
&b_boost);
rc->source_alt_ref_pending = 1;
-#if CONFIG_MULTIPLE_ARF
- // Set the ARF schedule.
- if (cpi->multi_arf_enabled) {
- schedule_frames(cpi, 0, -(rc->baseline_gf_interval - 1), 2, 1, 0);
- }
-#endif
+ // Test to see if multi arf is appropriate.
+ cpi->multi_arf_enabled =
+ (cpi->multi_arf_allowed && (rc->baseline_gf_interval >= 6) &&
+ (zero_motion_accumulator < 0.995)) ? 1 : 0;
} else {
- rc->gfu_boost = (int)boost_score;
+ rc->gfu_boost = MAX((int)boost_score, MIN_ARF_GF_BOOST);
rc->source_alt_ref_pending = 0;
-#if CONFIG_MULTIPLE_ARF
- // Set the GF schedule.
- if (cpi->multi_arf_enabled) {
- schedule_frames(cpi, 0, rc->baseline_gf_interval - 1, 2, 0, 0);
- assert(cpi->new_frame_coding_order_period ==
- rc->baseline_gf_interval);
- }
-#endif
}
-#if CONFIG_MULTIPLE_ARF
- if (cpi->multi_arf_enabled && (cpi->common.frame_type != KEY_FRAME)) {
- int max_level = INT_MIN;
- // Replace level indicator of -1 with correct level.
- for (i = 0; i < cpi->frame_coding_order_period; ++i) {
- if (cpi->arf_weight[i] > max_level) {
- max_level = cpi->arf_weight[i];
- }
- }
- ++max_level;
- for (i = 0; i < cpi->frame_coding_order_period; ++i) {
- if (cpi->arf_weight[i] == -1) {
- cpi->arf_weight[i] = max_level;
- }
- }
- cpi->max_arf_level = max_level;
- }
-#if 0
- if (cpi->multi_arf_enabled) {
- printf("\nSchedule: ");
- for (i = 0; i < cpi->new_frame_coding_order_period; ++i) {
- printf("%4d ", cpi->frame_coding_order[i]);
- }
- printf("\n");
- printf("ARFref: ");
- for (i = 0; i < cpi->new_frame_coding_order_period; ++i) {
- printf("%4d ", cpi->arf_buffer_idx[i]);
- }
- printf("\n");
- printf("Weight: ");
- for (i = 0; i < cpi->new_frame_coding_order_period; ++i) {
- printf("%4d ", cpi->arf_weight[i]);
- }
- printf("\n");
- }
-#endif
-#endif
// Reset the file position.
reset_fpf_position(twopass, start_pos);
// Calculate the bits to be allocated to the gf/arf group as a whole
- twopass->gf_group_bits = calculate_total_gf_group_bits(cpi, gf_group_err);
+ gf_group_bits = calculate_total_gf_group_bits(cpi, gf_group_err);
// Calculate the extra bits to be used for boosted frame(s)
- {
- int q = rc->last_q[INTER_FRAME];
- int boost = (rc->gfu_boost * gfboost_qadjust(q)) / 100;
-
- // Set max and minimum boost and hence minimum allocation.
- boost = clamp(boost, 125, (rc->baseline_gf_interval + 1) * 200);
-
- // Calculate the extra bits to be used for boosted frame(s)
- twopass->gf_bits = calculate_boost_bits(rc->baseline_gf_interval,
- boost, twopass->gf_group_bits);
-
-
- // For key frames the frame target rate is set already.
- // NOTE: We dont bother to check for the special case of ARF overlay
- // frames here, as there is clamping code for this in the function
- // vp9_rc_clamp_pframe_target_size(), which applies to one and two pass
- // encodes.
- if (cpi->common.frame_type != KEY_FRAME &&
- !vp9_is_upper_layer_key_frame(cpi)) {
- vp9_rc_set_frame_target(cpi, twopass->gf_bits);
- }
- }
+ gf_arf_bits = calculate_boost_bits(rc->baseline_gf_interval,
+ rc->gfu_boost, gf_group_bits);
// Adjust KF group bits and error remaining.
twopass->kf_group_error_left -= (int64_t)gf_group_err;
// For normal GFs remove the score for the GF itself unless this is
// also a key frame in which case it has already been accounted for.
if (rc->source_alt_ref_pending) {
- twopass->gf_group_error_left = (int64_t)(gf_group_err - mod_frame_err);
+ gf_group_error_left = gf_group_err - mod_frame_err;
} else if (cpi->common.frame_type != KEY_FRAME) {
- twopass->gf_group_error_left = (int64_t)(gf_group_err
- - gf_first_frame_err);
+ gf_group_error_left = gf_group_err - gf_first_frame_err;
} else {
- twopass->gf_group_error_left = (int64_t)gf_group_err;
+ gf_group_error_left = gf_group_err;
}
+ // Allocate bits to each of the frames in the GF group.
+ allocate_gf_group_bits(cpi, gf_group_bits, gf_group_error_left, gf_arf_bits);
+
+ // Reset the file position.
+ reset_fpf_position(twopass, start_pos);
+
// Calculate a section intra ratio used in setting max loop filter.
if (cpi->common.frame_type != KEY_FRAME) {
- calculate_section_intra_ratio(twopass, start_pos, rc->baseline_gf_interval);
+ twopass->section_intra_rating =
+ calculate_section_intra_ratio(start_pos, twopass->stats_in_end,
+ rc->baseline_gf_interval);
}
}
-// Allocate bits to a normal frame that is neither a gf an arf or a key frame.
-static void assign_std_frame_bits(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) {
- struct twopass_rc *twopass = &cpi->twopass;
- // For a single frame.
- const int max_bits = frame_max_bits(&cpi->rc, &cpi->oxcf);
- // Calculate modified prediction error used in bit allocation.
- const double modified_err = calculate_modified_err(cpi, this_frame);
- int target_frame_size;
- double err_fraction;
-
- if (twopass->gf_group_error_left > 0)
- // What portion of the remaining GF group error is used by this frame.
- err_fraction = modified_err / twopass->gf_group_error_left;
- else
- err_fraction = 0.0;
-
- // How many of those bits available for allocation should we give it?
- target_frame_size = (int)((double)twopass->gf_group_bits * err_fraction);
-
- // Clip target size to 0 - max_bits (or cpi->twopass.gf_group_bits) at
- // the top end.
- target_frame_size = clamp(target_frame_size, 0,
- MIN(max_bits, (int)twopass->gf_group_bits));
-
- // Adjust error and bits remaining.
- twopass->gf_group_error_left -= (int64_t)modified_err;
-
- // Per frame bit target for this frame.
- vp9_rc_set_frame_target(cpi, target_frame_size);
-}
-
-static int test_candidate_kf(struct twopass_rc *twopass,
+// TODO(PGW) Re-examine the use of II ration in this code in the light of#
+// changes elsewhere
+#define KF_II_MAX 128.0
+static int test_candidate_kf(TWO_PASS *twopass,
const FIRSTPASS_STATS *last_frame,
const FIRSTPASS_STATS *this_frame,
const FIRSTPASS_STATS *next_frame) {
// Examine how well the key frame predicts subsequent frames.
for (i = 0; i < 16; ++i) {
- double next_iiratio = (IIKFACTOR1 * local_next_frame.intra_error /
+ double next_iiratio = (BOOST_FACTOR * local_next_frame.intra_error /
DOUBLE_DIVIDE_CHECK(local_next_frame.coded_error));
- if (next_iiratio > RMAX)
- next_iiratio = RMAX;
+ if (next_iiratio > KF_II_MAX)
+ next_iiratio = KF_II_MAX;
// Cumulative effect of decay in prediction quality.
if (local_next_frame.pcnt_inter > 0.85)
static void find_next_key_frame(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) {
int i, j;
RATE_CONTROL *const rc = &cpi->rc;
- struct twopass_rc *const twopass = &cpi->twopass;
+ TWO_PASS *const twopass = &cpi->twopass;
+ GF_GROUP *const gf_group = &twopass->gf_group;
+ const VP9EncoderConfig *const oxcf = &cpi->oxcf;
const FIRSTPASS_STATS first_frame = *this_frame;
- const FIRSTPASS_STATS *start_position = twopass->stats_in;
+ const FIRSTPASS_STATS *const start_position = twopass->stats_in;
FIRSTPASS_STATS next_frame;
FIRSTPASS_STATS last_frame;
+ int kf_bits = 0;
+ int loop_decay_counter = 0;
double decay_accumulator = 1.0;
+ double av_decay_accumulator = 0.0;
double zero_motion_accumulator = 1.0;
double boost_score = 0.0;
double kf_mod_err = 0.0;
cpi->common.frame_type = KEY_FRAME;
+ // Reset the GF group data structures.
+ vp9_zero(*gf_group);
+
// Is this a forced key frame by interval.
rc->this_key_frame_forced = rc->next_key_frame_forced;
- // Clear the alt ref active flag as this can never be active on a key frame.
+ // Clear the alt ref active flag and last group multi arf flags as they
+ // can never be set for a key frame.
rc->source_alt_ref_active = 0;
+ cpi->multi_arf_last_grp_enabled = 0;
// KF is always a GF so clear frames till next gf counter.
rc->frames_till_gf_update_due = 0;
twopass->kf_group_bits = 0; // Total bits available to kf group
twopass->kf_group_error_left = 0; // Group modified error score.
- kf_mod_err = calculate_modified_err(cpi, this_frame);
+ kf_mod_err = calculate_modified_err(twopass, oxcf, this_frame);
// Find the next keyframe.
i = 0;
while (twopass->stats_in < twopass->stats_in_end &&
rc->frames_to_key < cpi->oxcf.key_freq) {
// Accumulate kf group error.
- kf_group_err += calculate_modified_err(cpi, this_frame);
+ kf_group_err += calculate_modified_err(twopass, oxcf, this_frame);
// Load the next frame's stats.
last_frame = *this_frame;
input_stats(twopass, this_frame);
// Provided that we are not at the end of the file...
- if (cpi->oxcf.auto_key &&
- lookup_next_frame_stats(twopass, &next_frame) != EOF) {
+ if (cpi->oxcf.auto_key && twopass->stats_in < twopass->stats_in_end) {
double loop_decay_rate;
// Check for a scene cut.
- if (test_candidate_kf(twopass, &last_frame, this_frame, &next_frame))
+ if (test_candidate_kf(twopass, &last_frame, this_frame,
+ twopass->stats_in))
break;
// How fast is the prediction quality decaying?
- loop_decay_rate = get_prediction_decay_rate(&cpi->common, &next_frame);
+ loop_decay_rate = get_prediction_decay_rate(&cpi->common,
+ twopass->stats_in);
// We want to know something about the recent past... rather than
// as used elsewhere where we are concerned with decay in prediction
// Rescan to get the correct error data for the forced kf group.
for (i = 0; i < rc->frames_to_key; ++i) {
- kf_group_err += calculate_modified_err(cpi, &tmp_frame);
+ kf_group_err += calculate_modified_err(twopass, oxcf, &tmp_frame);
input_stats(twopass, &tmp_frame);
}
rc->next_key_frame_forced = 1;
rc->next_key_frame_forced = 0;
}
+ if (is_two_pass_svc(cpi) && cpi->svc.number_temporal_layers > 1) {
+ int count = (1 << (cpi->svc.number_temporal_layers - 1)) - 1;
+ int new_frame_to_key = (rc->frames_to_key + count) & (~count);
+ int j;
+ for (j = 0; j < new_frame_to_key - rc->frames_to_key; ++j) {
+ if (EOF == input_stats(twopass, this_frame))
+ break;
+ kf_group_err += calculate_modified_err(twopass, oxcf, this_frame);
+ }
+ rc->frames_to_key = new_frame_to_key;
+ }
+
// Special case for the last key frame of the file.
if (twopass->stats_in >= twopass->stats_in_end) {
// Accumulate kf group error.
- kf_group_err += calculate_modified_err(cpi, this_frame);
+ kf_group_err += calculate_modified_err(twopass, oxcf, this_frame);
}
// Calculate the number of bits that should be assigned to the kf group.
// Reset the first pass file position.
reset_fpf_position(twopass, start_position);
- // Scan through the kf group collating various stats used to deteermine
+ // Scan through the kf group collating various stats used to determine
// how many bits to spend on it.
decay_accumulator = 1.0;
boost_score = 0.0;
- for (i = 0; i < rc->frames_to_key; ++i) {
+ for (i = 0; i < (rc->frames_to_key - 1); ++i) {
if (EOF == input_stats(twopass, &next_frame))
break;
// Monitor for static sections.
- if ((next_frame.pcnt_inter - next_frame.pcnt_motion) <
- zero_motion_accumulator) {
- zero_motion_accumulator = (next_frame.pcnt_inter -
- next_frame.pcnt_motion);
- }
+ zero_motion_accumulator =
+ MIN(zero_motion_accumulator,
+ get_zero_motion_factor(&cpi->common, &next_frame));
- // For the first few frames collect data to decide kf boost.
- if (i <= (rc->max_gf_interval * 2)) {
- double r;
- if (next_frame.intra_error > twopass->kf_intra_err_min)
- r = (IIKFACTOR2 * next_frame.intra_error /
- DOUBLE_DIVIDE_CHECK(next_frame.coded_error));
- else
- r = (IIKFACTOR2 * twopass->kf_intra_err_min /
- DOUBLE_DIVIDE_CHECK(next_frame.coded_error));
-
- if (r > RMAX)
- r = RMAX;
+ // Not all frames in the group are necessarily used in calculating boost.
+ if ((i <= rc->max_gf_interval) ||
+ ((i <= (rc->max_gf_interval * 4)) && (decay_accumulator > 0.5))) {
+ const double frame_boost =
+ calc_frame_boost(cpi, this_frame, 0, KF_MAX_BOOST);
// How fast is prediction quality decaying.
if (!detect_flash(twopass, 0)) {
- const double loop_decay_rate = get_prediction_decay_rate(&cpi->common,
- &next_frame);
+ const double loop_decay_rate =
+ get_prediction_decay_rate(&cpi->common, &next_frame);
decay_accumulator *= loop_decay_rate;
decay_accumulator = MAX(decay_accumulator, MIN_DECAY_FACTOR);
+ av_decay_accumulator += decay_accumulator;
+ ++loop_decay_counter;
}
-
- boost_score += (decay_accumulator * r);
+ boost_score += (decay_accumulator * frame_boost);
}
}
+ av_decay_accumulator /= (double)loop_decay_counter;
+
+ reset_fpf_position(twopass, start_position);
// Store the zero motion percentage
twopass->kf_zeromotion_pct = (int)(zero_motion_accumulator * 100.0);
// Calculate a section intra ratio used in setting max loop filter.
- calculate_section_intra_ratio(twopass, start_position, rc->frames_to_key);
-
- // Work out how many bits to allocate for the key frame itself.
- rc->kf_boost = (int)boost_score;
+ twopass->section_intra_rating =
+ calculate_section_intra_ratio(start_position, twopass->stats_in_end,
+ rc->frames_to_key);
- if (rc->kf_boost < (rc->frames_to_key * 3))
- rc->kf_boost = (rc->frames_to_key * 3);
- if (rc->kf_boost < MIN_KF_BOOST)
- rc->kf_boost = MIN_KF_BOOST;
+ // Apply various clamps for min and max boost
+ rc->kf_boost = (int)(av_decay_accumulator * boost_score);
+ rc->kf_boost = MAX(rc->kf_boost, (rc->frames_to_key * 3));
+ rc->kf_boost = MAX(rc->kf_boost, MIN_KF_BOOST);
- twopass->kf_bits = calculate_boost_bits((rc->frames_to_key - 1),
- rc->kf_boost, twopass->kf_group_bits);
+ // Work out how many bits to allocate for the key frame itself.
+ kf_bits = calculate_boost_bits((rc->frames_to_key - 1),
+ rc->kf_boost, twopass->kf_group_bits);
- twopass->kf_group_bits -= twopass->kf_bits;
+ twopass->kf_group_bits -= kf_bits;
- // Per frame bit target for this frame.
- vp9_rc_set_frame_target(cpi, twopass->kf_bits);
+ // Save the bits to spend on the key frame.
+ gf_group->bit_allocation[0] = kf_bits;
+ gf_group->update_type[0] = KF_UPDATE;
+ gf_group->rf_level[0] = KF_STD;
// Note the total error score of the kf group minus the key frame itself.
twopass->kf_group_error_left = (int)(kf_group_err - kf_mod_err);
twopass->modified_error_left -= kf_group_err;
}
-void vp9_rc_get_first_pass_params(VP9_COMP *cpi) {
- VP9_COMMON *const cm = &cpi->common;
- if (!cpi->refresh_alt_ref_frame &&
- (cm->current_video_frame == 0 ||
- (cpi->frame_flags & FRAMEFLAGS_KEY))) {
- cm->frame_type = KEY_FRAME;
- } else {
- cm->frame_type = INTER_FRAME;
- }
- // Do not use periodic key frames.
- cpi->rc.frames_to_key = INT_MAX;
-}
-
+#define VBR_PCT_ADJUSTMENT_LIMIT 50
// For VBR...adjustment to the frame target based on error from previous frames
-void vbr_rate_correction(int * this_frame_target,
+void vbr_rate_correction(VP9_COMP *cpi,
+ int * this_frame_target,
const int64_t vbr_bits_off_target) {
- int max_delta = (*this_frame_target * 15) / 100;
+ int max_delta;
+ double position_factor = 1.0;
+
+ // How far through the clip are we.
+ // This number is used to damp the per frame rate correction.
+ // Range 0 - 1.0
+ if (cpi->twopass.total_stats.count) {
+ position_factor = sqrt((double)cpi->common.current_video_frame /
+ cpi->twopass.total_stats.count);
+ }
+ max_delta = (int)(position_factor *
+ ((*this_frame_target * VBR_PCT_ADJUSTMENT_LIMIT) / 100));
// vbr_bits_off_target > 0 means we have extra bits to spend
if (vbr_bits_off_target > 0) {
}
}
+// Define the reference buffers that will be updated post encode.
+void configure_buffer_updates(VP9_COMP *cpi) {
+ TWO_PASS *const twopass = &cpi->twopass;
+
+ cpi->rc.is_src_frame_alt_ref = 0;
+ switch (twopass->gf_group.update_type[twopass->gf_group.index]) {
+ case KF_UPDATE:
+ cpi->refresh_last_frame = 1;
+ cpi->refresh_golden_frame = 1;
+ cpi->refresh_alt_ref_frame = 1;
+ break;
+ case LF_UPDATE:
+ cpi->refresh_last_frame = 1;
+ cpi->refresh_golden_frame = 0;
+ cpi->refresh_alt_ref_frame = 0;
+ break;
+ case GF_UPDATE:
+ cpi->refresh_last_frame = 1;
+ cpi->refresh_golden_frame = 1;
+ cpi->refresh_alt_ref_frame = 0;
+ break;
+ case OVERLAY_UPDATE:
+ cpi->refresh_last_frame = 0;
+ cpi->refresh_golden_frame = 1;
+ cpi->refresh_alt_ref_frame = 0;
+ cpi->rc.is_src_frame_alt_ref = 1;
+ break;
+ case ARF_UPDATE:
+ cpi->refresh_last_frame = 0;
+ cpi->refresh_golden_frame = 0;
+ cpi->refresh_alt_ref_frame = 1;
+ break;
+ default:
+ assert(0);
+ break;
+ }
+ if (is_two_pass_svc(cpi)) {
+ if (cpi->svc.temporal_layer_id > 0) {
+ cpi->refresh_last_frame = 0;
+ cpi->refresh_golden_frame = 0;
+ }
+ if (cpi->svc.layer_context[cpi->svc.spatial_layer_id].gold_ref_idx < 0)
+ cpi->refresh_golden_frame = 0;
+ if (cpi->alt_ref_source == NULL)
+ cpi->refresh_alt_ref_frame = 0;
+ }
+}
+
+
void vp9_rc_get_second_pass_params(VP9_COMP *cpi) {
VP9_COMMON *const cm = &cpi->common;
RATE_CONTROL *const rc = &cpi->rc;
- struct twopass_rc *const twopass = &cpi->twopass;
+ TWO_PASS *const twopass = &cpi->twopass;
+ GF_GROUP *const gf_group = &twopass->gf_group;
int frames_left;
FIRSTPASS_STATS this_frame;
FIRSTPASS_STATS this_frame_copy;
- double this_frame_intra_error;
- double this_frame_coded_error;
- int target;
- LAYER_CONTEXT *lc = NULL;
- const int is_spatial_svc = (cpi->use_svc &&
- cpi->svc.number_temporal_layers == 1);
- if (is_spatial_svc) {
- lc = &cpi->svc.layer_context[cpi->svc.spatial_layer_id];
+ int target_rate;
+ LAYER_CONTEXT *const lc = is_two_pass_svc(cpi) ?
+ &cpi->svc.layer_context[cpi->svc.spatial_layer_id] : 0;
+
+ if (lc != NULL) {
frames_left = (int)(twopass->total_stats.count -
lc->current_video_frame_in_layer);
} else {
if (!twopass->stats_in)
return;
- if (cpi->refresh_alt_ref_frame) {
- int modified_target = twopass->gf_bits;
- rc->base_frame_target = twopass->gf_bits;
- cm->frame_type = INTER_FRAME;
-#ifdef LONG_TERM_VBR_CORRECTION
+ // If this is an arf frame then we dont want to read the stats file or
+ // advance the input pointer as we already have what we need.
+ if (gf_group->update_type[gf_group->index] == ARF_UPDATE) {
+ int target_rate;
+ configure_buffer_updates(cpi);
+ target_rate = gf_group->bit_allocation[gf_group->index];
+ target_rate = vp9_rc_clamp_pframe_target_size(cpi, target_rate);
+ rc->base_frame_target = target_rate;
+
// Correction to rate target based on prior over or under shoot.
- if (cpi->oxcf.rc_mode == RC_MODE_VBR)
- vbr_rate_correction(&modified_target, rc->vbr_bits_off_target);
-#endif
- vp9_rc_set_frame_target(cpi, modified_target);
+ if (cpi->oxcf.rc_mode == VPX_VBR)
+ vbr_rate_correction(cpi, &target_rate, rc->vbr_bits_off_target);
+
+ vp9_rc_set_frame_target(cpi, target_rate);
+ cm->frame_type = INTER_FRAME;
+
+ if (lc != NULL) {
+ if (cpi->svc.spatial_layer_id == 0) {
+ lc->is_key_frame = 0;
+ } else {
+ lc->is_key_frame = cpi->svc.layer_context[0].is_key_frame;
+
+ if (lc->is_key_frame)
+ cpi->ref_frame_flags &= (~VP9_LAST_FLAG);
+ }
+ }
+
return;
}
vp9_clear_system_state();
- if (is_spatial_svc && twopass->kf_intra_err_min == 0) {
- twopass->kf_intra_err_min = KF_MB_INTRA_MIN * cpi->common.MBs;
- twopass->gf_intra_err_min = GF_MB_INTRA_MIN * cpi->common.MBs;
- }
-
- if (cpi->oxcf.rc_mode == RC_MODE_CONSTANT_QUALITY) {
+ if (cpi->oxcf.rc_mode == VPX_Q) {
twopass->active_worst_quality = cpi->oxcf.cq_level;
} else if (cm->current_video_frame == 0 ||
- (is_spatial_svc && lc->current_video_frame_in_layer == 0)) {
+ (lc != NULL && lc->current_video_frame_in_layer == 0)) {
// Special case code for first frame.
const int section_target_bandwidth = (int)(twopass->bits_left /
frames_left);
section_target_bandwidth);
twopass->active_worst_quality = tmp_q;
rc->ni_av_qi = tmp_q;
- rc->avg_q = vp9_convert_qindex_to_q(tmp_q);
+ rc->last_q[INTER_FRAME] = tmp_q;
+ rc->avg_q = vp9_convert_qindex_to_q(tmp_q, cm->bit_depth);
+ rc->avg_frame_qindex[INTER_FRAME] = tmp_q;
+ rc->last_q[KEY_FRAME] = (tmp_q + cpi->oxcf.best_allowed_q) / 2;
+ rc->avg_frame_qindex[KEY_FRAME] = rc->last_q[KEY_FRAME];
}
vp9_zero(this_frame);
if (EOF == input_stats(twopass, &this_frame))
return;
- this_frame_intra_error = this_frame.intra_error;
- this_frame_coded_error = this_frame.coded_error;
+ // Local copy of the current frame's first pass stats.
+ this_frame_copy = this_frame;
// Keyframe and section processing.
if (rc->frames_to_key == 0 ||
(cpi->frame_flags & FRAMEFLAGS_KEY)) {
// Define next KF group and assign bits to it.
- this_frame_copy = this_frame;
find_next_key_frame(cpi, &this_frame_copy);
- // Don't place key frame in any enhancement layers in spatial svc
- if (is_spatial_svc) {
- lc->is_key_frame = 1;
- if (cpi->svc.spatial_layer_id > 0) {
- cm->frame_type = INTER_FRAME;
- }
- }
} else {
- if (is_spatial_svc) {
- lc->is_key_frame = 0;
- }
cm->frame_type = INTER_FRAME;
}
- // Is this frame a GF / ARF? (Note: a key frame is always also a GF).
- if (rc->frames_till_gf_update_due == 0) {
- // Define next gf group and assign bits to it.
- this_frame_copy = this_frame;
-
-#if CONFIG_MULTIPLE_ARF
- if (cpi->multi_arf_enabled) {
- define_fixed_arf_period(cpi);
+ if (lc != NULL) {
+ if (cpi->svc.spatial_layer_id == 0) {
+ lc->is_key_frame = (cm->frame_type == KEY_FRAME);
+ if (lc->is_key_frame) {
+ cpi->ref_frame_flags &=
+ (~VP9_LAST_FLAG & ~VP9_GOLD_FLAG & ~VP9_ALT_FLAG);
+ lc->frames_from_key_frame = 0;
+ // Reset the empty frame resolution since we have a key frame.
+ cpi->svc.empty_frame_width = cm->width;
+ cpi->svc.empty_frame_height = cm->height;
+ }
} else {
-#endif
- define_gf_group(cpi, &this_frame_copy);
-#if CONFIG_MULTIPLE_ARF
- }
-#endif
+ cm->frame_type = INTER_FRAME;
+ lc->is_key_frame = cpi->svc.layer_context[0].is_key_frame;
- if (twopass->gf_zeromotion_pct > 995) {
- // As long as max_thresh for encode breakout is small enough, it is ok
- // to enable it for show frame, i.e. set allow_encode_breakout to
- // ENCODE_BREAKOUT_LIMITED.
- if (!cm->show_frame)
- cpi->allow_encode_breakout = ENCODE_BREAKOUT_DISABLED;
- else
- cpi->allow_encode_breakout = ENCODE_BREAKOUT_LIMITED;
+ if (lc->is_key_frame) {
+ cpi->ref_frame_flags &= (~VP9_LAST_FLAG);
+ lc->frames_from_key_frame = 0;
+ }
}
-
- rc->frames_till_gf_update_due = rc->baseline_gf_interval;
- cpi->refresh_golden_frame = 1;
- } else {
- // Otherwise this is an ordinary frame.
- // Assign bits from those allocated to the GF group.
- this_frame_copy = this_frame;
- assign_std_frame_bits(cpi, &this_frame_copy);
}
- // Keep a globally available copy of this and the next frame's iiratio.
- twopass->this_iiratio = (int)(this_frame_intra_error /
- DOUBLE_DIVIDE_CHECK(this_frame_coded_error));
- {
- FIRSTPASS_STATS next_frame;
- if (lookup_next_frame_stats(twopass, &next_frame) != EOF) {
- twopass->next_iiratio = (int)(next_frame.intra_error /
- DOUBLE_DIVIDE_CHECK(next_frame.coded_error));
+ // Define a new GF/ARF group. (Should always enter here for key frames).
+ if (rc->frames_till_gf_update_due == 0) {
+ define_gf_group(cpi, &this_frame_copy);
+
+ rc->frames_till_gf_update_due = rc->baseline_gf_interval;
+ if (lc != NULL)
+ cpi->refresh_golden_frame = 1;
+
+#if ARF_STATS_OUTPUT
+ {
+ FILE *fpfile;
+ fpfile = fopen("arf.stt", "a");
+ ++arf_count;
+ fprintf(fpfile, "%10d %10ld %10d %10d %10ld\n",
+ cm->current_video_frame, rc->frames_till_gf_update_due,
+ rc->kf_boost, arf_count, rc->gfu_boost);
+
+ fclose(fpfile);
}
+#endif
}
+ configure_buffer_updates(cpi);
+
+ target_rate = gf_group->bit_allocation[gf_group->index];
if (cpi->common.frame_type == KEY_FRAME)
- target = vp9_rc_clamp_iframe_target_size(cpi, rc->this_frame_target);
+ target_rate = vp9_rc_clamp_iframe_target_size(cpi, target_rate);
else
- target = vp9_rc_clamp_pframe_target_size(cpi, rc->this_frame_target);
+ target_rate = vp9_rc_clamp_pframe_target_size(cpi, target_rate);
+
+ rc->base_frame_target = target_rate;
- rc->base_frame_target = target;
-#ifdef LONG_TERM_VBR_CORRECTION
// Correction to rate target based on prior over or under shoot.
- if (cpi->oxcf.rc_mode == RC_MODE_VBR)
- vbr_rate_correction(&target, rc->vbr_bits_off_target);
-#endif
- vp9_rc_set_frame_target(cpi, target);
+ if (cpi->oxcf.rc_mode == VPX_VBR)
+ vbr_rate_correction(cpi, &target_rate, rc->vbr_bits_off_target);
+
+ vp9_rc_set_frame_target(cpi, target_rate);
// Update the total stats remaining structure.
subtract_stats(&twopass->total_left_stats, &this_frame);
}
+#define MINQ_ADJ_LIMIT 32
+#define Q_LIMIT_STEP 1
void vp9_twopass_postencode_update(VP9_COMP *cpi) {
+ TWO_PASS *const twopass = &cpi->twopass;
RATE_CONTROL *const rc = &cpi->rc;
-#ifdef LONG_TERM_VBR_CORRECTION
- // In this experimental mode, the VBR correction is done exclusively through
- // rc->vbr_bits_off_target. Based on the sign of this value, a limited %
- // adjustment is made to the target rate of subsequent frames, to try and
- // push it back towards 0. This mode is less likely to suffer from
- // extreme behaviour at the end of a clip or group of frames.
const int bits_used = rc->base_frame_target;
+
+ // VBR correction is done through rc->vbr_bits_off_target. Based on the
+ // sign of this value, a limited % adjustment is made to the target rate
+ // of subsequent frames, to try and push it back towards 0. This method
+ // is designed to prevent extreme behaviour at the end of a clip
+ // or group of frames.
rc->vbr_bits_off_target += rc->base_frame_target - rc->projected_frame_size;
-#else
- // In this mode, VBR correction is acheived by altering bits_left,
- // kf_group_bits & gf_group_bits to reflect any deviation from the target
- // rate in this frame. This alters the allocation of bits to the
- // remaning frames in the group / clip.
- //
- // This method can give rise to unstable behaviour near the end of a clip
- // or kf/gf group of frames where any accumulated error is corrected over an
- // ever decreasing number of frames. Hence we change the balance of target
- // vs. actual bitrate gradually as we progress towards the end of the
- // sequence in order to mitigate this effect.
- const double progress =
- (double)(cpi->twopass.stats_in - cpi->twopass.stats_in_start) /
- (cpi->twopass.stats_in_end - cpi->twopass.stats_in_start);
- const int bits_used = (int)(progress * rc->this_frame_target +
- (1.0 - progress) * rc->projected_frame_size);
-#endif
+ twopass->bits_left = MAX(twopass->bits_left - bits_used, 0);
- cpi->twopass.bits_left -= bits_used;
- cpi->twopass.bits_left = MAX(cpi->twopass.bits_left, 0);
+ // Calculate the pct rc error.
+ if (rc->total_actual_bits) {
+ rc->rate_error_estimate =
+ (int)((rc->vbr_bits_off_target * 100) / rc->total_actual_bits);
+ rc->rate_error_estimate = clamp(rc->rate_error_estimate, -100, 100);
+ } else {
+ rc->rate_error_estimate = 0;
+ }
-#ifdef LONG_TERM_VBR_CORRECTION
if (cpi->common.frame_type != KEY_FRAME &&
!vp9_is_upper_layer_key_frame(cpi)) {
-#else
- if (cpi->common.frame_type == KEY_FRAME ||
- vp9_is_upper_layer_key_frame(cpi)) {
- // For key frames kf_group_bits already had the target bits subtracted out.
- // So now update to the correct value based on the actual bits used.
- cpi->twopass.kf_group_bits += cpi->rc.this_frame_target - bits_used;
- } else {
-#endif
- cpi->twopass.kf_group_bits -= bits_used;
- cpi->twopass.gf_group_bits -= bits_used;
- cpi->twopass.gf_group_bits = MAX(cpi->twopass.gf_group_bits, 0);
+ twopass->kf_group_bits -= bits_used;
+ twopass->last_kfgroup_zeromotion_pct = twopass->kf_zeromotion_pct;
+ }
+ twopass->kf_group_bits = MAX(twopass->kf_group_bits, 0);
+
+ // Increment the gf group index ready for the next frame.
+ ++twopass->gf_group.index;
+
+ // If the rate control is drifting consider adjustment ot min or maxq.
+ // Only make adjustments on gf/arf
+ if ((cpi->oxcf.rc_mode == VPX_VBR) &&
+ (cpi->twopass.gf_zeromotion_pct < VLOW_MOTION_THRESHOLD) &&
+ !cpi->rc.is_src_frame_alt_ref) {
+ const int maxq_adj_limit =
+ rc->worst_quality - twopass->active_worst_quality;
+
+ // Undershoot.
+ if (rc->rate_error_estimate > cpi->oxcf.under_shoot_pct) {
+ --twopass->extend_maxq;
+ if (rc->rolling_target_bits >= rc->rolling_actual_bits)
+ twopass->extend_minq += Q_LIMIT_STEP;
+ // Overshoot.
+ } else if (rc->rate_error_estimate < -cpi->oxcf.over_shoot_pct) {
+ --twopass->extend_minq;
+ if (rc->rolling_target_bits < rc->rolling_actual_bits)
+ twopass->extend_maxq += Q_LIMIT_STEP;
+ } else {
+ if (rc->rolling_target_bits < rc->rolling_actual_bits)
+ --twopass->extend_minq;
+ if (rc->rolling_target_bits > rc->rolling_actual_bits)
+ --twopass->extend_maxq;
+ }
+ twopass->extend_minq = clamp(twopass->extend_minq, 0, MINQ_ADJ_LIMIT);
+ twopass->extend_maxq = clamp(twopass->extend_maxq, 0, maxq_adj_limit);
}
- cpi->twopass.kf_group_bits = MAX(cpi->twopass.kf_group_bits, 0);
}
projects / platform / framework / web / crosswalk.git / blobdiff