cpi->twopass.this_frame_stats = 0;
}
-static void segmentation_test_function(VP8_PTR ptr)
-{
- VP8_COMP *cpi = (VP8_COMP *)(ptr);
- unsigned char *seg_map;
- signed char feature_data[SEG_LVL_MAX][MAX_MB_SEGMENTS];
- MACROBLOCKD *xd = &cpi->mb.e_mbd;
-
- CHECK_MEM_ERROR(seg_map, vpx_calloc((cpi->common.mb_rows * cpi->common.mb_cols), 1));
-
- // Create a temporary map for segmentation data.
-
- // MB loop to set local segmentation map
- /*for ( i = 0; i < cpi->common.mb_rows; i++ )
- {
- for ( j = 0; j < cpi->common.mb_cols; j++ )
- {
- //seg_map[(i*cpi->common.mb_cols) + j] = (j % 2) + ((i%2)* 2);
- //if ( j < cpi->common.mb_cols/2 )
-
- // Segment 1 around the edge else 0
- if ( (i == 0) || (j == 0) || (i == (cpi->common.mb_rows-1)) || (j == (cpi->common.mb_cols-1)) )
- seg_map[(i*cpi->common.mb_cols) + j] = 1;
- //else if ( (i < 2) || (j < 2) || (i > (cpi->common.mb_rows-3)) || (j > (cpi->common.mb_cols-3)) )
- // seg_map[(i*cpi->common.mb_cols) + j] = 2;
- //else if ( (i < 5) || (j < 5) || (i > (cpi->common.mb_rows-6)) || (j > (cpi->common.mb_cols-6)) )
- // seg_map[(i*cpi->common.mb_cols) + j] = 3;
- else
- seg_map[(i*cpi->common.mb_cols) + j] = 0;
- }
- }*/
-
- // Set the segmentation Map
- vp8_set_segmentation_map(ptr, seg_map);
-
- // Activate segmentation.
- vp8_enable_segmentation(ptr);
-
- // Set up the quant segment data
- feature_data[SEG_LVL_ALT_Q][0] = 0;
- feature_data[SEG_LVL_ALT_Q][1] = 4;
- feature_data[SEG_LVL_ALT_Q][2] = 0;
- feature_data[SEG_LVL_ALT_Q][3] = 0;
- // Set up the loop segment data
- feature_data[SEG_LVL_ALT_LF][0] = 0;
- feature_data[SEG_LVL_ALT_LF][1] = 0;
- feature_data[SEG_LVL_ALT_LF][2] = 0;
- feature_data[SEG_LVL_ALT_LF][3] = 0;
-
- // Enable features as required
- enable_segfeature(xd, 1, SEG_LVL_ALT_Q);
-
- // Initialise the feature data structure
- // SEGMENT_DELTADATA 0, SEGMENT_ABSDATA 1
- vp8_set_segment_data(ptr, &feature_data[0][0], SEGMENT_DELTADATA);
-
- // Delete sementation map
- vpx_free(seg_map);
-
- seg_map = 0;
-
-}
-
// Computes a q delta (in "q index" terms) to get from a starting q value
// to a target value
// target q value
int high_q = (int)(cpi->avg_q > 48.0);
int qi_delta;
- // For now at least dont enable seg features alongside cyclic refresh.
- if ( cpi->cyclic_refresh_mode_enabled ||
- (cpi->pass != 2) )
- {
- vp8_disable_segmentation((VP8_PTR)cpi);
- vpx_memset( cpi->segmentation_map, 0, (cm->mb_rows * cm->mb_cols));
- return;
- }
-
// Disable and clear down for KF
if ( cm->frame_type == KEY_FRAME )
{
fclose(statsfile);
}
-// A simple function to cyclically refresh the background at a lower Q
-static void cyclic_background_refresh(VP8_COMP *cpi, int Q, int lf_adjustment)
-{
- unsigned char *seg_map;
- signed char feature_data[SEG_LVL_MAX][MAX_MB_SEGMENTS];
- int i;
- int block_count = cpi->cyclic_refresh_mode_max_mbs_perframe;
- int mbs_in_frame = cpi->common.mb_rows * cpi->common.mb_cols;
- MACROBLOCKD *xd = &cpi->mb.e_mbd;
-
- // Create a temporary map for segmentation data.
- CHECK_MEM_ERROR(seg_map, vpx_calloc((cpi->common.mb_rows * cpi->common.mb_cols), 1));
-
- cpi->cyclic_refresh_q = Q;
-
- for (i = Q; i > 0; i--)
- {
- if ( vp8_bits_per_mb(cpi->common.frame_type, i) >=
- ((vp8_bits_per_mb(cpi->common.frame_type, Q)*(Q + 128)) / 64))
- {
- break;
- }
- }
-
- cpi->cyclic_refresh_q = i;
-
- // Only update for inter frames
- if (cpi->common.frame_type != KEY_FRAME)
- {
- // Cycle through the macro_block rows
- // MB loop to set local segmentation map
- for (i = cpi->cyclic_refresh_mode_index; i < mbs_in_frame; i++)
- {
- // If the MB is as a candidate for clean up then mark it for possible boost/refresh (segment 1)
- // The segment id may get reset to 0 later if the MB gets coded anything other than last frame 0,0
- // as only (last frame 0,0) MBs are eligable for refresh : that is to say Mbs likely to be background blocks.
- if (cpi->cyclic_refresh_map[i] == 0)
- {
- seg_map[i] = 1;
- }
- else
- {
- seg_map[i] = 0;
-
- // Skip blocks that have been refreshed recently anyway.
- if (cpi->cyclic_refresh_map[i] < 0)
- //cpi->cyclic_refresh_map[i] = cpi->cyclic_refresh_map[i] / 16;
- cpi->cyclic_refresh_map[i]++;
- }
-
-
- if (block_count > 0)
- block_count--;
- else
- break;
-
- }
-
- // If we have gone through the frame reset to the start
- cpi->cyclic_refresh_mode_index = i;
-
- if (cpi->cyclic_refresh_mode_index >= mbs_in_frame)
- cpi->cyclic_refresh_mode_index = 0;
- }
-
- // Set the segmentation Map
- vp8_set_segmentation_map((VP8_PTR)cpi, seg_map);
-
- // Activate segmentation.
- vp8_enable_segmentation((VP8_PTR)cpi);
-
- // Set up the quant segment data
- feature_data[SEG_LVL_ALT_Q][0] = 0;
- feature_data[SEG_LVL_ALT_Q][1] = (cpi->cyclic_refresh_q - Q);
- feature_data[SEG_LVL_ALT_Q][2] = 0;
- feature_data[SEG_LVL_ALT_Q][3] = 0;
-
- // Set up the loop segment data
- feature_data[SEG_LVL_ALT_LF][0] = 0;
- feature_data[SEG_LVL_ALT_LF][1] = lf_adjustment;
- feature_data[SEG_LVL_ALT_LF][2] = 0;
- feature_data[SEG_LVL_ALT_LF][3] = 0;
-
- // Enable the loop and quant changes in the feature mask
- enable_segfeature(xd, 1, SEG_LVL_ALT_Q);
- enable_segfeature(xd, 1, SEG_LVL_ALT_LF);
-
- // Initialise the feature data structure
- // SEGMENT_DELTADATA 0, SEGMENT_ABSDATA 1
- vp8_set_segment_data((VP8_PTR)cpi, &feature_data[0][0], SEGMENT_DELTADATA);
-
- // Delete sementation map
- vpx_free(seg_map);
-
- seg_map = 0;
-
-}
-
static void set_default_lf_deltas(VP8_COMP *cpi)
{
cpi->mb.e_mbd.mode_ref_lf_delta_enabled = 1;
break;
}
- if (cpi->pass == 0)
- cpi->auto_worst_q = 1;
cpi->oxcf.worst_allowed_q = q_trans[oxcf->worst_allowed_q];
cpi->oxcf.best_allowed_q = q_trans[oxcf->best_allowed_q];
vpx_memset(cpi->active_map , 1, (cpi->common.mb_rows * cpi->common.mb_cols));
cpi->active_map_enabled = 0;
-#if 0
- // Experimental code for lagged and one pass
- // Initialise one_pass GF frames stats
- // Update stats used for GF selection
- if (cpi->pass == 0)
- {
- cpi->one_pass_frame_index = 0;
-
- for (i = 0; i < MAX_LAG_BUFFERS; i++)
- {
- cpi->one_pass_frame_stats[i].frames_so_far = 0;
- cpi->one_pass_frame_stats[i].frame_intra_error = 0.0;
- cpi->one_pass_frame_stats[i].frame_coded_error = 0.0;
- cpi->one_pass_frame_stats[i].frame_pcnt_inter = 0.0;
- cpi->one_pass_frame_stats[i].frame_pcnt_motion = 0.0;
- cpi->one_pass_frame_stats[i].frame_mvr = 0.0;
- cpi->one_pass_frame_stats[i].frame_mvr_abs = 0.0;
- cpi->one_pass_frame_stats[i].frame_mvc = 0.0;
- cpi->one_pass_frame_stats[i].frame_mvc_abs = 0.0;
- }
- }
-#endif
-
for (i = 0; i < ( sizeof(cpi->mbgraph_stats) /
sizeof(cpi->mbgraph_stats[0]) ); i++)
{
1));
}
- // Should we use the cyclic refresh method.
- // Currently this is tied to error resilliant mode
- cpi->cyclic_refresh_mode_enabled = cpi->oxcf.error_resilient_mode;
- cpi->cyclic_refresh_mode_max_mbs_perframe = (cpi->common.mb_rows * cpi->common.mb_cols) / 40;
- cpi->cyclic_refresh_mode_index = 0;
- cpi->cyclic_refresh_q = 32;
-
- if (cpi->cyclic_refresh_mode_enabled)
- CHECK_MEM_ERROR(cpi->cyclic_refresh_map, vpx_calloc((cpi->common.mb_rows * cpi->common.mb_cols), 1));
- else
- cpi->cyclic_refresh_map = (signed char *) NULL;
-
- // Test function for segmentation
-
- //segmentation_test_function((VP8_PTR) cpi);
-
#ifdef ENTROPY_STATS
init_context_counters();
#endif
}
fclose(f);
-#if 0
- f = fopen("qskip.stt", "a");
- fprintf(f, "minq:%d -maxq:%d skipture:skipfalse = %d:%d\n", cpi->oxcf.best_allowed_q, cpi->oxcf.worst_allowed_q, skiptruecount, skipfalsecount);
- fclose(f);
-#endif
-
}
#endif
dealloc_compressor_data(cpi);
vpx_free(cpi->mb.ss);
vpx_free(cpi->tok);
- vpx_free(cpi->cyclic_refresh_map);
for (i = 0; i < sizeof(cpi->mbgraph_stats) / sizeof(cpi->mbgraph_stats[0]); i++)
{
if (!cpi->auto_gold)
cpi->frames_till_gf_update_due = cpi->goldfreq;
- if ((cpi->pass != 2) && cpi->frames_till_gf_update_due)
- {
- cpi->current_gf_interval = cpi->frames_till_gf_update_due;
-
- // Set the bits per frame that we should try and recover in subsequent inter frames
- // to account for the extra GF spend... note that his does not apply for GF updates
- // that occur coincident with a key frame as the extra cost of key frames is dealt
- // with elsewhere.
-
- cpi->gf_overspend_bits += cpi->projected_frame_size;
- cpi->non_gf_bitrate_adjustment = cpi->gf_overspend_bits / cpi->frames_till_gf_update_due;
- }
-
// Update data structure that monitors level of reference to last GF
vpx_memset(cpi->gf_active_flags, 1, (cm->mb_rows * cm->mb_cols));
cpi->gf_active_count = cm->mb_rows * cm->mb_cols;
if (!cpi->auto_gold)
cpi->frames_till_gf_update_due = cpi->goldfreq;
- if ((cpi->pass != 2) && (cpi->frames_till_gf_update_due > 0))
- {
- cpi->current_gf_interval = cpi->frames_till_gf_update_due;
-
- // Set the bits per frame that we should try and recover in subsequent inter frames
- // to account for the extra GF spend... note that his does not apply for GF updates
- // that occur coincident with a key frame as the extra cost of key frames is dealt
- // with elsewhere.
- if ((cm->frame_type != KEY_FRAME) && !cpi->source_alt_ref_active)
- {
- // Calcluate GF bits to be recovered
- // Projected size - av frame bits available for inter frames for clip as a whole
- cpi->gf_overspend_bits += (cpi->projected_frame_size - cpi->inter_frame_target);
- }
-
- cpi->non_gf_bitrate_adjustment = cpi->gf_overspend_bits / cpi->frames_till_gf_update_due;
-
- }
-
// Update data structure that monitors level of reference to last GF
vpx_memset(cpi->gf_active_flags, 1, (cm->mb_rows * cm->mb_cols));
cpi->gf_active_count = cm->mb_rows * cm->mb_cols;
// Clear down mmx registers to allow floating point in what follows
vp8_clear_system_state();
- // For an alt ref frame in 2 pass we skip the call to the second pass function that sets the target bandwidth
- if (cpi->pass == 2)
+ // For an alt ref frame in 2 pass we skip the call to the second
+ // pass function that sets the target bandwidth so must set it here
+ if (cpi->common.refresh_alt_ref_frame)
{
- if (cpi->common.refresh_alt_ref_frame)
- {
- cpi->per_frame_bandwidth = cpi->twopass.gf_bits; // Per frame bit target for the alt ref frame
- cpi->target_bandwidth = cpi->twopass.gf_bits * cpi->output_frame_rate; // per second target bitrate
- }
+ cpi->per_frame_bandwidth = cpi->twopass.gf_bits; // Per frame bit target for the alt ref frame
+ cpi->target_bandwidth = cpi->twopass.gf_bits * cpi->output_frame_rate; // per second target bitrate
}
- else
- cpi->per_frame_bandwidth = (int)(cpi->target_bandwidth / cpi->output_frame_rate);
// Default turn off buffer to buffer copying
cm->copy_buffer_to_gf = 0;
// is above a threshold
cpi->zbin_mode_boost = 0;
cpi->zbin_mode_boost_enabled = TRUE;
- if (cpi->pass == 2)
+ if ( cpi->gfu_boost <= 400 )
{
- if ( cpi->gfu_boost <= 400 )
- {
- cpi->zbin_mode_boost_enabled = FALSE;
- }
+ cpi->zbin_mode_boost_enabled = FALSE;
}
// Current default encoder behaviour for the altref sign bias
}
}
- // Test code for segmentation
- //if ( (cm->frame_type == KEY_FRAME) || ((cm->current_video_frame % 2) == 0))
- //if ( (cm->current_video_frame % 2) == 0 )
- // vp8_enable_segmentation((VP8_PTR)cpi);
- //else
- // vp8_disable_segmentation((VP8_PTR)cpi);
-
-#if 0
- // Experimental code for lagged compress and one pass
- // Initialise one_pass GF frames stats
- // Update stats used for GF selection
- //if ( cpi->pass == 0 )
- {
- cpi->one_pass_frame_index = cm->current_video_frame % MAX_LAG_BUFFERS;
-
- cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frames_so_far = 0;
- cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_intra_error = 0.0;
- cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_coded_error = 0.0;
- cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_pcnt_inter = 0.0;
- cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_pcnt_motion = 0.0;
- cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_mvr = 0.0;
- cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_mvr_abs = 0.0;
- cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_mvc = 0.0;
- cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_mvc_abs = 0.0;
- }
-#endif
-
//#if !CONFIG_COMPRED
// This function has been deprecated for now but we may want to do
// something here at a late date
}
}
+ vp8_clear_system_state();
+
// Set an active best quality and if necessary active worst quality
- // There is some odd behaviour for one pass here that needs attention.
- if ( (cpi->pass == 2) || (cpi->ni_frames > 150))
- {
- vp8_clear_system_state();
+ Q = cpi->active_worst_quality;
- Q = cpi->active_worst_quality;
+ if ( cm->frame_type == KEY_FRAME )
+ {
+ if (cpi->gfu_boost > 600)
+ cpi->active_best_quality = kf_low_motion_minq[Q];
+ else
+ cpi->active_best_quality = kf_high_motion_minq[Q];
- if ( cm->frame_type == KEY_FRAME )
+ // Special case for key frames forced because we have reached
+ // the maximum key frame interval. Here force the Q to a range
+ // based on the ambient Q to reduce the risk of popping
+ if ( cpi->this_key_frame_forced )
{
- if ( cpi->pass == 2 )
- {
- if (cpi->gfu_boost > 600)
- cpi->active_best_quality = kf_low_motion_minq[Q];
- else
- cpi->active_best_quality = kf_high_motion_minq[Q];
-
- // Special case for key frames forced because we have reached
- // the maximum key frame interval. Here force the Q to a range
- // based on the ambient Q to reduce the risk of popping
- if ( cpi->this_key_frame_forced )
- {
- int delta_qindex;
- int qindex = cpi->last_boosted_qindex;
+ int delta_qindex;
+ int qindex = cpi->last_boosted_qindex;
- delta_qindex = compute_qdelta( cpi, qindex,
- (qindex * 0.75) );
+ delta_qindex = compute_qdelta( cpi, qindex,
+ (qindex * 0.75) );
- cpi->active_best_quality = qindex + delta_qindex;
- if (cpi->active_best_quality < cpi->best_quality)
- cpi->active_best_quality = cpi->best_quality;
- }
- }
- // One pass more conservative
- else
- cpi->active_best_quality = kf_high_motion_minq[Q];
+ cpi->active_best_quality = qindex + delta_qindex;
+ if (cpi->active_best_quality < cpi->best_quality)
+ cpi->active_best_quality = cpi->best_quality;
}
+ }
- else if (cm->refresh_golden_frame || cpi->common.refresh_alt_ref_frame)
- {
- // Use the lower of cpi->active_worst_quality and recent
- // average Q as basis for GF/ARF Q limit unless last frame was
- // a key frame.
- if ( (cpi->frames_since_key > 1) &&
- (cpi->avg_frame_qindex < cpi->active_worst_quality) )
- {
- Q = cpi->avg_frame_qindex;
- }
-
- // For constrained quality dont allow Q less than the cq level
- if ( (cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY) &&
- (Q < cpi->cq_target_quality) )
- {
- Q = cpi->cq_target_quality;
- }
-
- if ( cpi->pass == 2 )
- {
- if ( cpi->gfu_boost > 1000 )
- cpi->active_best_quality = gf_low_motion_minq[Q];
- else if ( cpi->gfu_boost < 400 )
- cpi->active_best_quality = gf_high_motion_minq[Q];
- else
- cpi->active_best_quality = gf_mid_motion_minq[Q];
-
- // Constrained quality use slightly lower active best.
- if ( cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY )
- {
- cpi->active_best_quality =
- cpi->active_best_quality * 15/16;
- }
- }
- // One pass more conservative
- else
- cpi->active_best_quality = gf_high_motion_minq[Q];
- }
- else
+ else if (cm->refresh_golden_frame || cpi->common.refresh_alt_ref_frame)
+ {
+ // Use the lower of cpi->active_worst_quality and recent
+ // average Q as basis for GF/ARF Q limit unless last frame was
+ // a key frame.
+ if ( (cpi->frames_since_key > 1) &&
+ (cpi->avg_frame_qindex < cpi->active_worst_quality) )
{
- cpi->active_best_quality = inter_minq[Q];
-
- // For the constant/constrained quality mode we dont want
- // q to fall below the cq level.
- if ((cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY) &&
- (cpi->active_best_quality < cpi->cq_target_quality) )
- {
- // If we are strongly undershooting the target rate in the last
- // frames then use the user passed in cq value not the auto
- // cq value.
- if ( cpi->rolling_actual_bits < cpi->min_frame_bandwidth )
- cpi->active_best_quality = cpi->oxcf.cq_level;
- else
- cpi->active_best_quality = cpi->cq_target_quality;
- }
+ Q = cpi->avg_frame_qindex;
}
- // If CBR and the buffer is as full then it is reasonable to allow
- // higher quality on the frames to prevent bits just going to waste.
- if (cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER)
+ // For constrained quality dont allow Q less than the cq level
+ if ( (cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY) &&
+ (Q < cpi->cq_target_quality) )
{
- // Note that the use of >= here elliminates the risk of a devide
- // by 0 error in the else if clause
- if (cpi->buffer_level >= cpi->oxcf.maximum_buffer_size)
- cpi->active_best_quality = cpi->best_quality;
+ Q = cpi->cq_target_quality;
+ }
- else if (cpi->buffer_level > cpi->oxcf.optimal_buffer_level)
- {
- int Fraction = ((cpi->buffer_level - cpi->oxcf.optimal_buffer_level) * 128) / (cpi->oxcf.maximum_buffer_size - cpi->oxcf.optimal_buffer_level);
- int min_qadjustment = ((cpi->active_best_quality - cpi->best_quality) * Fraction) / 128;
+ if ( cpi->gfu_boost > 1000 )
+ cpi->active_best_quality = gf_low_motion_minq[Q];
+ else if ( cpi->gfu_boost < 400 )
+ cpi->active_best_quality = gf_high_motion_minq[Q];
+ else
+ cpi->active_best_quality = gf_mid_motion_minq[Q];
- cpi->active_best_quality -= min_qadjustment;
- }
+ // Constrained quality use slightly lower active best.
+ if ( cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY )
+ {
+ cpi->active_best_quality =
+ cpi->active_best_quality * 15/16;
}
}
- // Make sure constrained quality mode limits are adhered to for the first
- // few frames of one pass encodes
- else if (cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY)
+ else
{
- if ( (cm->frame_type == KEY_FRAME) ||
- cm->refresh_golden_frame || cpi->common.refresh_alt_ref_frame )
+ cpi->active_best_quality = inter_minq[Q];
+
+ // For the constant/constrained quality mode we dont want
+ // q to fall below the cq level.
+ if ((cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY) &&
+ (cpi->active_best_quality < cpi->cq_target_quality) )
{
- cpi->active_best_quality = cpi->best_quality;
+ // If we are strongly undershooting the target rate in the last
+ // frames then use the user passed in cq value not the auto
+ // cq value.
+ if ( cpi->rolling_actual_bits < cpi->min_frame_bandwidth )
+ cpi->active_best_quality = cpi->oxcf.cq_level;
+ else
+ cpi->active_best_quality = cpi->cq_target_quality;
}
- else if (cpi->active_best_quality < cpi->cq_target_quality)
+ }
+
+ // If CBR and the buffer is as full then it is reasonable to allow
+ // higher quality on the frames to prevent bits just going to waste.
+ if (cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER)
+ {
+ // Note that the use of >= here elliminates the risk of a devide
+ // by 0 error in the else if clause
+ if (cpi->buffer_level >= cpi->oxcf.maximum_buffer_size)
+ cpi->active_best_quality = cpi->best_quality;
+
+ else if (cpi->buffer_level > cpi->oxcf.optimal_buffer_level)
{
- cpi->active_best_quality = cpi->cq_target_quality;
+ int Fraction = ((cpi->buffer_level - cpi->oxcf.optimal_buffer_level) * 128) / (cpi->oxcf.maximum_buffer_size - cpi->oxcf.optimal_buffer_level);
+ int min_qadjustment = ((cpi->active_best_quality - cpi->best_quality) * Fraction) / 128;
+
+ cpi->active_best_quality -= min_qadjustment;
}
}
else
zbin_oq_high = ZBIN_OQ_MAX;
- // Setup background Q adjustment for error resilliant mode
- if (cpi->cyclic_refresh_mode_enabled)
- cyclic_background_refresh(cpi, Q, 0);
-
vp8_compute_frame_size_bounds(cpi, &frame_under_shoot_limit, &frame_over_shoot_limit);
// Limit Q range for the adaptive loop.
}
-
-#if 0
-
- if (cpi->pass != 1)
- {
- FILE *f = fopen("skip.stt", "a");
- fprintf(f, "%d, %d, %4d ", cpi->common.refresh_golden_frame, cpi->common.refresh_alt_ref_frame, cpi->prob_skip_false);
- fclose(f);
- }
-
-#endif
-
}
if (cm->frame_type == KEY_FRAME)
vp8_clear_system_state(); //__asm emms;
-#if 0
- if (cpi->pass != 1)
- {
- FILE *f = fopen("q_used.stt", "a");
- fprintf(f, "%4d, %4d, %8d\n", cpi->common.current_video_frame,
- cpi->common.base_qindex, cpi->projected_frame_size);
- fclose(f);
- }
-#endif
-
-
- // Test to see if the stats generated for this frame indicate that we should have coded a key frame
- // (assuming that we didn't)!
- if (cpi->pass != 2 && cpi->oxcf.auto_key && cm->frame_type != KEY_FRAME)
- {
- int key_frame_decision = decide_key_frame(cpi);
-
- if (key_frame_decision)
- {
- // Reset all our sizing numbers and recode
- cm->frame_type = KEY_FRAME;
-
- vp8_pick_frame_size(cpi);
-
- // Clear the Alt reference frame active flag when we have a key frame
- cpi->source_alt_ref_active = FALSE;
-
- // Reset the loop filter deltas and segmentation map
- setup_features(cpi);
-
- // If segmentation is enabled force a map update for key frames
- if (xd->segmentation_enabled)
- {
- xd->update_mb_segmentation_map = 1;
- xd->update_mb_segmentation_data = 1;
- }
-
- vp8_restore_coding_context(cpi);
-
- Q = vp8_regulate_q(cpi, cpi->this_frame_target);
-
- vp8_compute_frame_size_bounds(cpi, &frame_under_shoot_limit, &frame_over_shoot_limit);
-
- // Limit Q range for the adaptive loop.
- bottom_index = cpi->active_best_quality;
- top_index = cpi->active_worst_quality;
- q_low = cpi->active_best_quality;
- q_high = cpi->active_worst_quality;
-
- loop_count++;
- Loop = TRUE;
-
- continue;
- }
- }
-
- vp8_clear_system_state();
-
if (frame_over_shoot_limit == 0)
frame_over_shoot_limit = 1;
// Are we are overshooting and up against the limit of active max Q.
- if (((cpi->pass != 2) || (cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER)) &&
- (Q == cpi->active_worst_quality) &&
+ if ((cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER) &&
+ (Q == cpi->active_worst_quality) &&
(cpi->active_worst_quality < cpi->worst_quality) &&
(cpi->projected_frame_size > frame_over_shoot_limit))
{
// Calculate the average Q for normal inter frames (not key or GFU
// frames).
- if ( cpi->pass == 2 )
- {
- cpi->ni_tot_qi += Q;
- cpi->ni_av_qi = (cpi->ni_tot_qi / cpi->ni_frames);
- }
- else
- {
- // Damp value for first few frames
- if (cpi->ni_frames > 150 )
- {
- cpi->ni_tot_qi += Q;
- cpi->ni_av_qi = (cpi->ni_tot_qi / cpi->ni_frames);
- }
- // For one pass, early in the clip ... average the current frame Q
- // value with the worstq entered by the user as a dampening measure
- else
- {
- cpi->ni_tot_qi += Q;
- cpi->ni_av_qi = ((cpi->ni_tot_qi / cpi->ni_frames) + cpi->worst_quality + 1) / 2;
- }
-
- // If the average Q is higher than what was used in the last frame
- // (after going through the recode loop to keep the frame size within range)
- // then use the last frame value - 1.
- // The -1 is designed to stop Q and hence the data rate, from progressively
- // falling away during difficult sections, but at the same time reduce the number of
- // itterations around the recode loop.
- if (Q > cpi->ni_av_qi)
- cpi->ni_av_qi = Q - 1;
- }
+ cpi->ni_tot_qi += Q;
+ cpi->ni_av_qi = (cpi->ni_tot_qi / cpi->ni_frames);
}
#if 0
}
}
-#if 0
-
- if (cpi->common.frame_type != 0 && cpi->common.base_qindex == cpi->oxcf.worst_allowed_q)
- {
- skiptruecount += cpi->skip_true_count;
- skipfalsecount += cpi->skip_false_count;
- }
-
-#endif
-#if 0
-
- if (cpi->pass != 1)
- {
- FILE *f = fopen("skip.stt", "a");
- fprintf(f, "frame:%4d flags:%4x Q:%4d P:%4d Size:%5d\n", cpi->common.current_video_frame, *frame_flags, cpi->common.base_qindex, cpi->prob_skip_false, *size);
-
- if (cpi->is_src_frame_alt_ref == 1)
- fprintf(f, "skipcount: %4d framesize: %d\n", cpi->skip_true_count , *size);
-
- fclose(f);
- }
-
-#endif
#endif
#if HAVE_ARMV7
target = estimate_bits_at_q(INTRA_FRAME, Q, cpi->common.MBs,
cpi->key_frame_rate_correction_factor);
}
- else if (cpi->pass == 2)
+ else
{
// New Two pass RC
target = cpi->per_frame_bandwidth;
}
- // First Frame is a special case
- else if (cpi->common.current_video_frame == 0)
- {
- /* 1 Pass there is no information on which to base size so use
- * bandwidth per second * fraction of the initial buffer
- * level
- */
- target = cpi->oxcf.starting_buffer_level / 2;
-
- if(target > cpi->oxcf.target_bandwidth * 3 / 2)
- target = cpi->oxcf.target_bandwidth * 3 / 2;
- }
- else
- {
- // if this keyframe was forced, use a more recent Q estimate
- int Q = (cpi->common.frame_flags & FRAMEFLAGS_KEY)
- ? cpi->avg_frame_qindex : cpi->ni_av_qi;
-
- // Boost depends somewhat on frame rate
- kf_boost = (int)(2 * cpi->output_frame_rate - 16);
-
- // adjustment up based on q
- kf_boost = kf_boost * kfboost_qadjust(Q) / 100;
-
- // frame separation adjustment ( down)
- if (cpi->frames_since_key < cpi->output_frame_rate / 2)
- kf_boost = (int)(kf_boost
- * cpi->frames_since_key / (cpi->output_frame_rate / 2));
-
- if (kf_boost < 16)
- kf_boost = 16;
-
- target = ((16 + kf_boost) * cpi->per_frame_bandwidth) >> 4;
- }
-
if (cpi->oxcf.rc_max_intra_bitrate_pct)
{
cpi->this_frame_target = target;
- // TODO: if we separate rate targeting from Q targetting, move this.
- // Reset the active worst quality to the baseline value for key frames.
- if (cpi->pass != 2)
- cpi->active_worst_quality = cpi->worst_quality;
-
}
-// Do the best we can to define the parameteres for the next GF based on what information we have available.
+// Do the best we can to define the parameteres for the next GF based
+// on what information we have available.
+// In this experimental code only two pass is supported.
static void calc_gf_params(VP8_COMP *cpi)
{
int Q = (cpi->oxcf.fixed_q < 0) ? cpi->last_q[INTER_FRAME] : cpi->oxcf.fixed_q;
if (pct_gf_active > gf_frame_useage)
gf_frame_useage = pct_gf_active;
- // Not two pass
- if (cpi->pass != 2)
- {
- // Single Pass lagged mode: TBD
- if (FALSE)
- {
- }
-
- // Single Pass compression: Has to use current and historical data
- else
- {
-#if 0
- // Experimental code
- int index = cpi->one_pass_frame_index;
- int frames_to_scan = (cpi->max_gf_interval <= MAX_LAG_BUFFERS) ? cpi->max_gf_interval : MAX_LAG_BUFFERS;
-
- /*
- // *************** Experimental code - incomplete
- double decay_val = 1.0;
- double IIAccumulator = 0.0;
- double last_iiaccumulator = 0.0;
- double IIRatio;
-
- cpi->one_pass_frame_index = cpi->common.current_video_frame%MAX_LAG_BUFFERS;
-
- for ( i = 0; i < (frames_to_scan - 1); i++ )
- {
- if ( index < 0 )
- index = MAX_LAG_BUFFERS;
- index --;
-
- if ( cpi->one_pass_frame_stats[index].frame_coded_error > 0.0 )
- {
- IIRatio = cpi->one_pass_frame_stats[index].frame_intra_error / cpi->one_pass_frame_stats[index].frame_coded_error;
-
- if ( IIRatio > 30.0 )
- IIRatio = 30.0;
- }
- else
- IIRatio = 30.0;
-
- IIAccumulator += IIRatio * decay_val;
-
- decay_val = decay_val * cpi->one_pass_frame_stats[index].frame_pcnt_inter;
-
- if ( (i > MIN_GF_INTERVAL) &&
- ((IIAccumulator - last_iiaccumulator) < 2.0) )
- {
- break;
- }
- last_iiaccumulator = IIAccumulator;
- }
-
- Boost = IIAccumulator*100.0/16.0;
- cpi->baseline_gf_interval = i;
-
- */
-#else
-
- /*************************************************************/
- // OLD code
-
- // Adjust boost based upon ambient Q
- Boost = vp8_gfboost_qadjust(Q);
-
- // Adjust based upon most recently measure intra useage
- Boost = Boost * gf_intra_usage_adjustment[(cpi->this_frame_percent_intra < 15) ? cpi->this_frame_percent_intra : 14] / 100;
-
- // Adjust gf boost based upon GF usage since last GF
- Boost = Boost * gf_adjust_table[gf_frame_useage] / 100;
-#endif
- }
-
- // Apply an upper limit based on Q for 1 pass encodes
- // TODO.
- // This is a temporay measure oas one pass not really supported yet in
- // the experimental branch
- if (Boost > 600 && (cpi->pass == 0))
- Boost = 600;
-
- // Apply lower limits to boost.
- else if (Boost < 110)
- Boost = 110;
-
- // Note the boost used
- cpi->last_boost = Boost;
-
- }
-
- // Estimate next interval
- // This is updated once the real frame size/boost is known.
- if (cpi->oxcf.fixed_q == -1)
- {
- if (cpi->pass == 2) // 2 Pass
- {
- cpi->frames_till_gf_update_due = cpi->baseline_gf_interval;
- }
- else // 1 Pass
- {
- cpi->frames_till_gf_update_due = cpi->baseline_gf_interval;
-
- if (cpi->last_boost > 750)
- cpi->frames_till_gf_update_due++;
-
- if (cpi->last_boost > 1000)
- cpi->frames_till_gf_update_due++;
-
- if (cpi->last_boost > 1250)
- cpi->frames_till_gf_update_due++;
-
- if (cpi->last_boost >= 1500)
- cpi->frames_till_gf_update_due ++;
-
- if (gf_interval_table[gf_frame_useage] > cpi->frames_till_gf_update_due)
- cpi->frames_till_gf_update_due = gf_interval_table[gf_frame_useage];
-
- if (cpi->frames_till_gf_update_due > cpi->max_gf_interval)
- cpi->frames_till_gf_update_due = cpi->max_gf_interval;
- }
- }
- else
- cpi->frames_till_gf_update_due = cpi->baseline_gf_interval;
-
- // ARF on or off
- if (cpi->pass != 2)
- {
- // For now Alt ref is not allowed except in 2 pass modes.
- cpi->source_alt_ref_pending = FALSE;
-
- /*if ( cpi->oxcf.fixed_q == -1)
- {
- if ( cpi->oxcf.play_alternate && (cpi->last_boost > (100 + (AF_THRESH*cpi->frames_till_gf_update_due)) ) )
- cpi->source_alt_ref_pending = TRUE;
- else
- cpi->source_alt_ref_pending = FALSE;
- }*/
- }
+ // Set the gf interval
+ cpi->frames_till_gf_update_due = cpi->baseline_gf_interval;
}
min_frame_target = 0;
- if (cpi->pass == 2)
- {
- min_frame_target = cpi->min_frame_bandwidth;
+ min_frame_target = cpi->min_frame_bandwidth;
- if (min_frame_target < (cpi->av_per_frame_bandwidth >> 5))
- min_frame_target = cpi->av_per_frame_bandwidth >> 5;
- }
- else if (min_frame_target < cpi->per_frame_bandwidth / 4)
- min_frame_target = cpi->per_frame_bandwidth / 4;
+ if (min_frame_target < (cpi->av_per_frame_bandwidth >> 5))
+ min_frame_target = cpi->av_per_frame_bandwidth >> 5;
// Special alt reference frame case
if (cpi->common.refresh_alt_ref_frame)
{
- if (cpi->pass == 2)
- {
- cpi->per_frame_bandwidth = cpi->twopass.gf_bits; // Per frame bit target for the alt ref frame
- cpi->this_frame_target = cpi->per_frame_bandwidth;
- }
-
- /* One Pass ??? TBD */
- /*else
- {
- int frames_in_section;
- int allocation_chunks;
- int Q = (cpi->oxcf.fixed_q < 0) ? cpi->last_q[INTER_FRAME] : cpi->oxcf.fixed_q;
- int alt_boost;
- int max_arf_rate;
-
- alt_boost = (cpi->gfu_boost * 3 * vp8_gfboost_qadjust(Q)) / (2 * 100);
- alt_boost += (cpi->frames_till_gf_update_due * 50);
-
- // If alt ref is not currently active then we have a pottential double hit with GF and ARF so reduce the boost a bit.
- // A similar thing is done on GFs that preceed a arf update.
- if ( !cpi->source_alt_ref_active )
- alt_boost = alt_boost * 3 / 4;
-
- frames_in_section = cpi->frames_till_gf_update_due+1; // Standard frames + GF
- allocation_chunks = (frames_in_section * 100) + alt_boost;
-
- // Normalize Altboost and allocations chunck down to prevent overflow
- while ( alt_boost > 1000 )
- {
- alt_boost /= 2;
- allocation_chunks /= 2;
- }
-
- else
- {
- int bits_in_section;
-
- if ( cpi->kf_overspend_bits > 0 )
- {
- Adjustment = (cpi->kf_bitrate_adjustment <= cpi->kf_overspend_bits) ? cpi->kf_bitrate_adjustment : cpi->kf_overspend_bits;
-
- if ( Adjustment > (cpi->per_frame_bandwidth - min_frame_target) )
- Adjustment = (cpi->per_frame_bandwidth - min_frame_target);
-
- cpi->kf_overspend_bits -= Adjustment;
-
- // Calculate an inter frame bandwidth target for the next few frames designed to recover
- // any extra bits spent on the key frame.
- cpi->inter_frame_target = cpi->per_frame_bandwidth - Adjustment;
- if ( cpi->inter_frame_target < min_frame_target )
- cpi->inter_frame_target = min_frame_target;
- }
- else
- cpi->inter_frame_target = cpi->per_frame_bandwidth;
-
- bits_in_section = cpi->inter_frame_target * frames_in_section;
-
- // Avoid loss of precision but avoid overflow
- if ( (bits_in_section>>7) > allocation_chunks )
- cpi->this_frame_target = alt_boost * (bits_in_section / allocation_chunks);
- else
- cpi->this_frame_target = (alt_boost * bits_in_section) / allocation_chunks;
- }
- }
- */
+ // Per frame bit target for the alt ref frame
+ cpi->per_frame_bandwidth = cpi->twopass.gf_bits;
+ cpi->this_frame_target = cpi->per_frame_bandwidth;
}
// Normal frames (gf,and inter)
else
{
- // 2 pass
- if (cpi->pass == 2)
- {
- cpi->this_frame_target = cpi->per_frame_bandwidth;
- }
- // 1 pass
- else
- {
- // Make rate adjustment to recover bits spent in key frame
- // Test to see if the key frame inter data rate correction should still be in force
- if (cpi->kf_overspend_bits > 0)
- {
- Adjustment = (cpi->kf_bitrate_adjustment <= cpi->kf_overspend_bits) ? cpi->kf_bitrate_adjustment : cpi->kf_overspend_bits;
-
- if (Adjustment > (cpi->per_frame_bandwidth - min_frame_target))
- Adjustment = (cpi->per_frame_bandwidth - min_frame_target);
-
- cpi->kf_overspend_bits -= Adjustment;
-
- // Calculate an inter frame bandwidth target for the next few frames designed to recover
- // any extra bits spent on the key frame.
- cpi->this_frame_target = cpi->per_frame_bandwidth - Adjustment;
-
- if (cpi->this_frame_target < min_frame_target)
- cpi->this_frame_target = min_frame_target;
- }
- else
- cpi->this_frame_target = cpi->per_frame_bandwidth;
-
- // If appropriate make an adjustment to recover bits spent on a recent GF
- if ((cpi->gf_overspend_bits > 0) && (cpi->this_frame_target > min_frame_target))
- {
- int Adjustment = (cpi->non_gf_bitrate_adjustment <= cpi->gf_overspend_bits) ? cpi->non_gf_bitrate_adjustment : cpi->gf_overspend_bits;
-
- if (Adjustment > (cpi->this_frame_target - min_frame_target))
- Adjustment = (cpi->this_frame_target - min_frame_target);
-
- cpi->gf_overspend_bits -= Adjustment;
- cpi->this_frame_target -= Adjustment;
- }
-
- // Apply small + and - boosts for non gf frames
- if ((cpi->last_boost > 150) && (cpi->frames_till_gf_update_due > 0) &&
- (cpi->current_gf_interval >= (MIN_GF_INTERVAL << 1)))
- {
- // % Adjustment limited to the range 1% to 10%
- Adjustment = (cpi->last_boost - 100) >> 5;
-
- if (Adjustment < 1)
- Adjustment = 1;
- else if (Adjustment > 10)
- Adjustment = 10;
-
- // Convert to bits
- Adjustment = (cpi->this_frame_target * Adjustment) / 100;
-
- if (Adjustment > (cpi->this_frame_target - min_frame_target))
- Adjustment = (cpi->this_frame_target - min_frame_target);
-
- if (cpi->common.frames_since_golden == (cpi->current_gf_interval >> 1))
- cpi->this_frame_target += ((cpi->current_gf_interval - 1) * Adjustment);
- else
- cpi->this_frame_target -= Adjustment;
- }
- }
+ cpi->this_frame_target = cpi->per_frame_bandwidth;
}
// Sanity check that the total sum of adjustments is not above the maximum allowed
// Note the baseline target data rate for this inter frame.
cpi->inter_frame_target = cpi->this_frame_target;
- // One Pass specific code
- if (cpi->pass == 0)
- {
- // Adapt target frame size with respect to any buffering constraints:
- if (cpi->buffered_mode)
- {
- int one_percent_bits = 1 + cpi->oxcf.optimal_buffer_level / 100;
-
- if ((cpi->buffer_level < cpi->oxcf.optimal_buffer_level) ||
- (cpi->bits_off_target < cpi->oxcf.optimal_buffer_level))
- {
- int percent_low = 0;
-
- // Decide whether or not we need to adjust the frame data rate target.
- //
- // If we are are below the optimal buffer fullness level and adherence
- // to buffering contraints is important to the end useage then adjust
- // the per frame target.
- if ((cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER) &&
- (cpi->buffer_level < cpi->oxcf.optimal_buffer_level))
- {
- percent_low =
- (cpi->oxcf.optimal_buffer_level - cpi->buffer_level) /
- one_percent_bits;
- }
- // Are we overshooting the long term clip data rate...
- else if (cpi->bits_off_target < 0)
- {
- // Adjust per frame data target downwards to compensate.
- percent_low = (int)(100 * -cpi->bits_off_target /
- (cpi->total_byte_count * 8));
- }
-
- if (percent_low > cpi->oxcf.under_shoot_pct)
- percent_low = cpi->oxcf.under_shoot_pct;
- else if (percent_low < 0)
- percent_low = 0;
-
- // lower the target bandwidth for this frame.
- cpi->this_frame_target -= (cpi->this_frame_target * percent_low)
- / 200;
-
- // Are we using allowing control of active_worst_allowed_q
- // according to buffer level.
- if (cpi->auto_worst_q)
- {
- int critical_buffer_level;
-
- // For streaming applications the most important factor is
- // cpi->buffer_level as this takes into account the
- // specified short term buffering constraints. However,
- // hitting the long term clip data rate target is also
- // important.
- if (cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER)
- {
- // Take the smaller of cpi->buffer_level and
- // cpi->bits_off_target
- critical_buffer_level =
- (cpi->buffer_level < cpi->bits_off_target)
- ? cpi->buffer_level : cpi->bits_off_target;
- }
- // For local file playback short term buffering contraints
- // are less of an issue
- else
- {
- // Consider only how we are doing for the clip as a
- // whole
- critical_buffer_level = cpi->bits_off_target;
- }
-
- // Set the active worst quality based upon the selected
- // buffer fullness number.
- if (critical_buffer_level < cpi->oxcf.optimal_buffer_level)
- {
- if ( critical_buffer_level >
- (cpi->oxcf.optimal_buffer_level >> 2) )
- {
- int64_t qadjustment_range =
- cpi->worst_quality - cpi->ni_av_qi;
- int64_t above_base =
- (critical_buffer_level -
- (cpi->oxcf.optimal_buffer_level >> 2));
-
- // Step active worst quality down from
- // cpi->ni_av_qi when (critical_buffer_level ==
- // cpi->optimal_buffer_level) to
- // cpi->worst_quality when
- // (critical_buffer_level ==
- // cpi->optimal_buffer_level >> 2)
- cpi->active_worst_quality =
- cpi->worst_quality -
- ((qadjustment_range * above_base) /
- (cpi->oxcf.optimal_buffer_level*3>>2));
- }
- else
- {
- cpi->active_worst_quality = cpi->worst_quality;
- }
- }
- else
- {
- cpi->active_worst_quality = cpi->ni_av_qi;
- }
- }
- else
- {
- cpi->active_worst_quality = cpi->worst_quality;
- }
- }
- else
- {
- int percent_high = 0;
-
- if ((cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER)
- && (cpi->buffer_level > cpi->oxcf.optimal_buffer_level))
- {
- percent_high = (cpi->buffer_level
- - cpi->oxcf.optimal_buffer_level)
- / one_percent_bits;
- }
- else if (cpi->bits_off_target > cpi->oxcf.optimal_buffer_level)
- {
- percent_high = (int)((100 * cpi->bits_off_target)
- / (cpi->total_byte_count * 8));
- }
-
- if (percent_high > cpi->oxcf.over_shoot_pct)
- percent_high = cpi->oxcf.over_shoot_pct;
- else if (percent_high < 0)
- percent_high = 0;
-
- cpi->this_frame_target += (cpi->this_frame_target *
- percent_high) / 200;
-
-
- // Are we allowing control of active_worst_allowed_q according to bufferl level.
- if (cpi->auto_worst_q)
- {
- // When using the relaxed buffer model stick to the user specified value
- cpi->active_worst_quality = cpi->ni_av_qi;
- }
- else
- {
- cpi->active_worst_quality = cpi->worst_quality;
- }
- }
-
- // Set active_best_quality to prevent quality rising too high
- cpi->active_best_quality = cpi->best_quality;
-
- // Worst quality obviously must not be better than best quality
- if (cpi->active_worst_quality <= cpi->active_best_quality)
- cpi->active_worst_quality = cpi->active_best_quality + 1;
-
- }
- // Unbuffered mode (eg. video conferencing)
- else
- {
- // Set the active worst quality
- cpi->active_worst_quality = cpi->worst_quality;
- }
-
- // Special trap for constrained quality mode
- // "active_worst_quality" may never drop below cq level
- // for any frame type.
- if ( cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY &&
- cpi->active_worst_quality < cpi->cq_target_quality)
- {
- cpi->active_worst_quality = cpi->cq_target_quality;
- }
- }
-
// Test to see if we have to drop a frame
// The auto-drop frame code is only used in buffered mode.
// In unbufferd mode (eg vide conferencing) the descision to
cpi->drop_frame = TRUE;
}
-#if 0
- // Check for other drop frame crtieria (Note 2 pass cbr uses decimation on whole KF sections)
- else if ((cpi->buffer_level < cpi->oxcf.drop_frames_water_mark * cpi->oxcf.optimal_buffer_level / 100) &&
- (cpi->drop_count < cpi->max_drop_count) && (cpi->pass == 0))
- {
- cpi->drop_frame = TRUE;
- }
-
-#endif
-
if (cpi->drop_frame)
{
// Update the buffer level variable.
// Is a fixed manual GF frequency being used
if (cpi->auto_gold)
{
- // For one pass throw a GF if recent frame intra useage is low or the GF useage is high
- if ((cpi->pass == 0) && (cpi->this_frame_percent_intra < 15 || gf_frame_useage >= 5))
- cpi->common.refresh_golden_frame = TRUE;
-
- // Two pass GF descision
- else if (cpi->pass == 2)
- cpi->common.refresh_golden_frame = TRUE;
- }
-
-#if 0
-
- // Debug stats
- if (0)
- {
- FILE *f;
-
- f = fopen("gf_useaget.stt", "a");
- fprintf(f, " %8ld %10ld %10ld %10ld %10ld\n",
- cpi->common.current_video_frame, cpi->gfu_boost, vp8_gfboost_qadjust(Q), cpi->gfu_boost, gf_frame_useage);
- fclose(f);
+ cpi->common.refresh_golden_frame = TRUE;
}
-#endif
-
if (cpi->common.refresh_golden_frame == TRUE)
{
-#if 0
-
- if (0) // p_gw
- {
- FILE *f;
-
- f = fopen("GFexit.stt", "a");
- fprintf(f, "%8ld GF coded\n", cpi->common.current_video_frame);
- fclose(f);
- }
-
-#endif
-
if (cpi->auto_adjust_gold_quantizer)
{
calc_gf_params(cpi);
{
if (cpi->oxcf.fixed_q < 0)
{
- if (cpi->pass == 2)
- {
- cpi->this_frame_target = cpi->per_frame_bandwidth; // The spend on the GF is defined in the two pass code for two pass encodes
- }
- else
- {
- int Boost = cpi->last_boost;
- int frames_in_section = cpi->frames_till_gf_update_due + 1;
- int allocation_chunks = (frames_in_section * 100) + (Boost - 100);
- int bits_in_section = cpi->inter_frame_target * frames_in_section;
-
- // Normalize Altboost and allocations chunck down to prevent overflow
- while (Boost > 1000)
- {
- Boost /= 2;
- allocation_chunks /= 2;
- }
-
- // Avoid loss of precision but avoid overflow
- if ((bits_in_section >> 7) > allocation_chunks)
- cpi->this_frame_target = Boost * (bits_in_section / allocation_chunks);
- else
- cpi->this_frame_target = (Boost * bits_in_section) / allocation_chunks;
- }
+ // The spend on the GF is defined in the two pass code
+ // for two pass encodes
+ cpi->this_frame_target = cpi->per_frame_bandwidth;
}
else
cpi->this_frame_target =
// Clear down mmx registers to allow floating point in what follows
vp8_clear_system_state();
- // Do we have any key frame overspend to recover?
- // Two-pass overspend handled elsewhere.
- if ((cpi->pass != 2)
- && (cpi->projected_frame_size > cpi->per_frame_bandwidth))
- {
- int overspend;
-
- /* Update the count of key frame overspend to be recovered in
- * subsequent frames. A portion of the KF overspend is treated as gf
- * overspend (and hence recovered more quickly) as the kf is also a
- * gf. Otherwise the few frames following each kf tend to get more
- * bits allocated than those following other gfs.
- */
- overspend = (cpi->projected_frame_size - cpi->per_frame_bandwidth);
- cpi->kf_overspend_bits += overspend * 7 / 8;
- cpi->gf_overspend_bits += overspend * 1 / 8;
-
- /* Work out how much to try and recover per frame. */
- cpi->kf_bitrate_adjustment = cpi->kf_overspend_bits
- / estimate_keyframe_frequency(cpi);
- }
-
cpi->frames_since_key = 0;
cpi->key_frame_count++;
}
projects / libvpx / commitdiff