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[spatial svc] Remove some restrictions that are needed to improve the quality

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Change-Id: I76a48b03388a8c5cc74b871deb836cd92263b306
This commit is contained in:
Minghai Shang 2014-05-20 11:00:30 -07:00
parent e9ed051c83
commit 7af3440268
2 changed files with 19 additions and 24 deletions
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30
vp9/encoder/vp9_firstpass.c
View File

@ -46,6 +46,9 @@
#define GF_RMAX 96.0
#define ERR_DIVISOR 150.0
#define MIN_DECAY_FACTOR 0.1
#define SVC_FACTOR_PT_LOW 0.45
#define FACTOR_PT_LOW 0.5
#define FACTOR_PT_HIGH 0.9
#define KF_MB_INTRA_MIN 150
#define GF_MB_INTRA_MIN 100
@ -938,8 +941,8 @@ static int get_twopass_worst_quality(const VP9_COMP *cpi,
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);
is_svc_upper_layer ? SVC_FACTOR_PT_LOW :
FACTOR_PT_LOW, FACTOR_PT_HIGH, q);
const int bits_per_mb = vp9_rc_bits_per_mb(INTER_FRAME, q,
factor * speed_term);
if (bits_per_mb <= target_norm_bits_per_mb)
@ -2189,18 +2192,21 @@ void vp9_rc_get_second_pass_params(VP9_COMP *cpi) {
// 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 {
cm->frame_type = INTER_FRAME;
}
if (is_spatial_svc) {
if (cpi->svc.spatial_layer_id == 0) {
lc->is_key_frame = (cm->frame_type == KEY_FRAME);
} else {
cm->frame_type = INTER_FRAME;
lc->is_key_frame = cpi->svc.layer_context[0].is_key_frame;
if (lc->is_key_frame) {
cpi->ref_frame_flags &= (~VP9_LAST_FLAG);
}
}
} 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).

13
vpx/src/svc_encodeframe.c
View File

@ -496,7 +496,6 @@ vpx_codec_err_t vpx_svc_set_scale_factors(SvcContext *svc_ctx,
vpx_codec_err_t vpx_svc_init(SvcContext *svc_ctx, vpx_codec_ctx_t *codec_ctx,
vpx_codec_iface_t *iface,
vpx_codec_enc_cfg_t *enc_cfg) {
int max_intra_size_pct;
vpx_codec_err_t res;
SvcInternal *const si = get_svc_internal(svc_ctx);
if (svc_ctx == NULL || codec_ctx == NULL || iface == NULL ||
@ -575,7 +574,6 @@ vpx_codec_err_t vpx_svc_init(SvcContext *svc_ctx, vpx_codec_ctx_t *codec_ctx,
// modify encoder configuration
enc_cfg->ss_number_layers = si->layers;
enc_cfg->ts_number_layers = 1; // Temporal layers not used in this encoder.
enc_cfg->kf_mode = VPX_KF_DISABLED;
// Lag in frames not currently supported
enc_cfg->g_lag_in_frames = 0;
@ -605,16 +603,8 @@ vpx_codec_err_t vpx_svc_init(SvcContext *svc_ctx, vpx_codec_ctx_t *codec_ctx,
}
vpx_codec_control(codec_ctx, VP9E_SET_SVC, 1);
vpx_codec_control(codec_ctx, VP8E_SET_CPUUSED, 1);
vpx_codec_control(codec_ctx, VP8E_SET_STATIC_THRESHOLD, 1);
vpx_codec_control(codec_ctx, VP8E_SET_NOISE_SENSITIVITY, 1);
vpx_codec_control(codec_ctx, VP8E_SET_TOKEN_PARTITIONS, 1);
max_intra_size_pct =
(int)(((double)enc_cfg->rc_buf_optimal_sz * 0.5) *
((double)enc_cfg->g_timebase.den / enc_cfg->g_timebase.num) / 10.0);
vpx_codec_control(codec_ctx, VP8E_SET_MAX_INTRA_BITRATE_PCT,
max_intra_size_pct);
return VPX_CODEC_OK;
}
@ -869,8 +859,7 @@ vpx_codec_err_t vpx_svc_encode(SvcContext *svc_ctx, vpx_codec_ctx_t *codec_ctx,
si->rc_stats_buf_used = 0;
si->layers = svc_ctx->spatial_layers;
if (si->frame_within_gop >= si->kf_dist ||
si->encode_frame_count == 0) {
if (si->encode_frame_count == 0) {
si->frame_within_gop = 0;
}
si->is_keyframe = (si->frame_within_gop == 0);