diff options
| -rw-r--r-- | vp8/encoder/firstpass.c | 57 |
1 files changed, 26 insertions, 31 deletions
diff --git a/vp8/encoder/firstpass.c b/vp8/encoder/firstpass.c index 0c30aeffe..a0457609d 100644 --- a/vp8/encoder/firstpass.c +++ b/vp8/encoder/firstpass.c @@ -1722,14 +1722,15 @@ static void define_gf_group(VP8_COMP *cpi, FIRSTPASS_STATS *this_frame) cpi->twopass.modified_error_used += gf_group_err; // Assign bits to the arf or gf. - { + for (i = 0; i <= (cpi->source_alt_ref_pending && cpi->common.frame_type != KEY_FRAME); i++) { int Boost; int frames_in_section; int allocation_chunks; int Q = (cpi->oxcf.fixed_q < 0) ? cpi->last_q[INTER_FRAME] : cpi->oxcf.fixed_q; + int gf_bits; // For ARF frames - if (cpi->source_alt_ref_pending) + if (cpi->source_alt_ref_pending && i == 0) { Boost = (cpi->gfu_boost * 3 * GFQ_ADJUSTMENT) / (2 * 100); //Boost += (cpi->baseline_gf_interval * 25); @@ -1768,7 +1769,7 @@ static void define_gf_group(VP8_COMP *cpi, FIRSTPASS_STATS *this_frame) } // Calculate the number of bits to be spent on the gf or arf based on the boost number - cpi->twopass.gf_bits = (int)((double)Boost * (cpi->twopass.gf_group_bits / (double)allocation_chunks)); + gf_bits = (int)((double)Boost * (cpi->twopass.gf_group_bits / (double)allocation_chunks)); // If the frame that is to be boosted is simpler than the average for // the gf/arf group then use an alternative calculation @@ -1786,9 +1787,9 @@ static void define_gf_group(VP8_COMP *cpi, FIRSTPASS_STATS *this_frame) alt_gf_bits = (int)((double)Boost * (alt_gf_grp_bits / (double)allocation_chunks)); - if (cpi->twopass.gf_bits > alt_gf_bits) + if (gf_bits > alt_gf_bits) { - cpi->twopass.gf_bits = alt_gf_bits; + gf_bits = alt_gf_bits; } } // Else if it is harder than other frames in the group make sure it at @@ -1801,16 +1802,29 @@ static void define_gf_group(VP8_COMP *cpi, FIRSTPASS_STATS *this_frame) mod_frame_err / DOUBLE_DIVIDE_CHECK((double)cpi->twopass.kf_group_error_left)); - if (alt_gf_bits > cpi->twopass.gf_bits) + if (alt_gf_bits > gf_bits) { - cpi->twopass.gf_bits = alt_gf_bits; + gf_bits = alt_gf_bits; } } // Dont allow a negative value for gf_bits - if (cpi->twopass.gf_bits < 0) - cpi->twopass.gf_bits = 0; + if (gf_bits < 0) + gf_bits = 0; + + gf_bits += cpi->min_frame_bandwidth; // Add in minimum for a frame + if (i == 0) + { + cpi->twopass.gf_bits = gf_bits; + } + if (i == 1 || (!cpi->source_alt_ref_pending && (cpi->common.frame_type != KEY_FRAME))) + { + cpi->per_frame_bandwidth = gf_bits; // Per frame bit target for this frame + } + } + + { // Adjust KF group bits and error remainin cpi->twopass.kf_group_error_left -= gf_group_err; cpi->twopass.kf_group_bits -= cpi->twopass.gf_group_bits; @@ -1825,7 +1839,7 @@ static void define_gf_group(VP8_COMP *cpi, FIRSTPASS_STATS *this_frame) else cpi->twopass.gf_group_error_left = gf_group_err; - cpi->twopass.gf_group_bits -= cpi->twopass.gf_bits; + cpi->twopass.gf_group_bits -= cpi->twopass.gf_bits - cpi->min_frame_bandwidth; if (cpi->twopass.gf_group_bits < 0) cpi->twopass.gf_group_bits = 0; @@ -1841,13 +1855,6 @@ static void define_gf_group(VP8_COMP *cpi, FIRSTPASS_STATS *this_frame) } else cpi->twopass.mid_gf_extra_bits = 0; - - cpi->twopass.gf_bits += cpi->min_frame_bandwidth; // Add in minimum for a frame - } - - if (!cpi->source_alt_ref_pending && (cpi->common.frame_type != KEY_FRAME)) // Normal GF and not a KF - { - cpi->per_frame_bandwidth = cpi->twopass.gf_bits; // Per frame bit target for this frame } // Adjustment to estimate_max_q based on a measure of complexity of the section @@ -1998,22 +2005,10 @@ void vp8_second_pass(VP8_COMP *cpi) if (cpi->source_alt_ref_pending && (cpi->common.frame_type != KEY_FRAME)) { // Assign a standard frames worth of bits from those allocated to the GF group + int bak = cpi->per_frame_bandwidth; vpx_memcpy(&this_frame_copy, &this_frame, sizeof(this_frame)); assign_std_frame_bits(cpi, &this_frame_copy); - - // If appropriate (we are switching into ARF active but it was not previously active) apply a boost for the gf at the start of the group. - //if ( !cpi->source_alt_ref_active && (cpi->gfu_boost > 150) ) - if (FALSE) - { - int extra_bits; - int pct_extra = (cpi->gfu_boost - 100) / 50; - - pct_extra = (pct_extra > 20) ? 20 : pct_extra; - - extra_bits = (cpi->twopass.gf_group_bits * pct_extra) / 100; - cpi->twopass.gf_group_bits -= extra_bits; - cpi->per_frame_bandwidth += extra_bits; - } + cpi->per_frame_bandwidth = bak; } } |