generic-library/vpx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Merge "Fix incorrect macroblock counts in twopass rate control"

Browse Source
This commit is contained in:
John Koleszar 2011-03-11 06:06:04 -08:00 committed by Code Review
commit e34e417d94
1 changed files with 14 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
vp8/encoder/firstpass.c
View File

@ -841,10 +841,10 @@ void vp8_first_pass(VP8_COMP *cpi)
extern const int vp8_bits_per_mb[2][QINDEX_RANGE];
#define BASE_ERRPERMB 150
static int estimate_max_q(VP8_COMP *cpi, double section_err, int section_target_bandwitdh, int Height, int Width)
static int estimate_max_q(VP8_COMP *cpi, double section_err, int section_target_bandwitdh)
{
int Q;
int num_mbs = ((Height * Width) / (16 * 16));
int num_mbs = cpi->common.MBs;
int target_norm_bits_per_mb;
double err_per_mb = section_err / num_mbs;
@ -941,10 +941,10 @@ static int estimate_max_q(VP8_COMP *cpi, double section_err, int section_target_
return Q;
}
static int estimate_q(VP8_COMP *cpi, double section_err, int section_target_bandwitdh, int Height, int Width)
static int estimate_q(VP8_COMP *cpi, double section_err, int section_target_bandwitdh)
{
int Q;
int num_mbs = ((Height * Width) / (16 * 16));
int num_mbs = cpi->common.MBs;
int target_norm_bits_per_mb;
double err_per_mb = section_err / num_mbs;
@ -992,10 +992,10 @@ static int estimate_q(VP8_COMP *cpi, double section_err, int section_target_band
}
// Estimate a worst case Q for a KF group
static int estimate_kf_group_q(VP8_COMP *cpi, double section_err, int section_target_bandwitdh, int Height, int Width, double group_iiratio)
static int estimate_kf_group_q(VP8_COMP *cpi, double section_err, int section_target_bandwitdh, double group_iiratio)
{
int Q;
int num_mbs = ((Height * Width) / (16 * 16));
int num_mbs = cpi->common.MBs;
int target_norm_bits_per_mb = (512 * section_target_bandwitdh) / num_mbs;
int bits_per_mb_at_this_q;
@ -1090,11 +1090,10 @@ static int estimate_kf_group_q(VP8_COMP *cpi, double section_err, int section_ta
// For cq mode estimate a cq level that matches the observed
// complexity and data rate.
static int estimate_cq(VP8_COMP *cpi, double section_err,
int section_target_bandwitdh, int Height, int Width)
static int estimate_cq(VP8_COMP *cpi, double section_err, int section_target_bandwitdh)
{
int Q;
int num_mbs = ((Height * Width) / (16 * 16));
int num_mbs = cpi->common.MBs;
int target_norm_bits_per_mb;
double err_per_mb = section_err / num_mbs;
@ -1608,7 +1607,7 @@ static void define_gf_group(VP8_COMP *cpi, FIRSTPASS_STATS *this_frame)
arf_frame_bits = (int)((double)Boost * (group_bits / (double)allocation_chunks));
// Estimate if there are enough bits available to make worthwhile use of an arf.
tmp_q = estimate_q(cpi, mod_frame_err, (int)arf_frame_bits, cpi->common.Height, cpi->common.Width);
tmp_q = estimate_q(cpi, mod_frame_err, (int)arf_frame_bits);
// Only use an arf if it is likely we will be able to code it at a lower Q than the surrounding frames.
if (tmp_q < cpi->worst_quality)
@ -2112,8 +2111,7 @@ void vp8_second_pass(VP8_COMP *cpi)
est_cq =
estimate_cq( cpi,
(cpi->total_coded_error_left / frames_left),
(int)(cpi->bits_left / frames_left),
cpi->common.Height, cpi->common.Width);
(int)(cpi->bits_left / frames_left));
cpi->cq_target_quality = cpi->oxcf.cq_level;
if ( est_cq > cpi->cq_target_quality )
@ -2125,9 +2123,7 @@ void vp8_second_pass(VP8_COMP *cpi)
cpi->maxq_min_limit = cpi->best_quality;
tmp_q = estimate_max_q( cpi,
(cpi->total_coded_error_left / frames_left),
(int)(cpi->bits_left / frames_left),
cpi->common.Height,
cpi->common.Width);
(int)(cpi->bits_left / frames_left));
// Limit the maxq value returned subsequently.
// This increases the risk of overspend or underspend if the initial
@ -2155,7 +2151,7 @@ void vp8_second_pass(VP8_COMP *cpi)
if (frames_left < 1)
frames_left = 1;
tmp_q = estimate_max_q(cpi, (cpi->total_coded_error_left / frames_left), (int)(cpi->bits_left / frames_left), cpi->common.Height, cpi->common.Width);
tmp_q = estimate_max_q(cpi, (cpi->total_coded_error_left / frames_left), (int)(cpi->bits_left / frames_left));
// Move active_worst_quality but in a damped way
if (tmp_q > cpi->active_worst_quality)
@ -2764,7 +2760,7 @@ void vp8_find_next_key_frame(VP8_COMP *cpi, FIRSTPASS_STATS *this_frame)
bits_per_frame = (cpi->oxcf.target_bandwidth * cpi->oxcf.two_pass_vbrmin_section / 100);
// Work out if spatial resampling is necessary
kf_q = estimate_kf_group_q(cpi, err_per_frame, bits_per_frame, new_height, new_width, group_iiratio);
kf_q = estimate_kf_group_q(cpi, err_per_frame, bits_per_frame, group_iiratio);
// If we project a required Q higher than the maximum allowed Q then make a guess at the actual size of frames in this section
projected_bits_perframe = bits_per_frame;
@ -2835,7 +2831,7 @@ void vp8_find_next_key_frame(VP8_COMP *cpi, FIRSTPASS_STATS *this_frame)
effective_size_ratio = (1.0 + (3.0 * effective_size_ratio)) / 4.0;
// Now try again and see what Q we get with the smaller image size
kf_q = estimate_kf_group_q(cpi, err_per_frame * effective_size_ratio, bits_per_frame, new_height, new_width, group_iiratio);
kf_q = estimate_kf_group_q(cpi, err_per_frame * effective_size_ratio, bits_per_frame, group_iiratio);
if (0)
{