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Merge "describe rd-opt levels introduce VP8RDLevel enum"

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This commit is contained in:
Pascal Massimino 2013-02-27 01:45:14 -08:00 committed by Gerrit Code Review
commit 7648c3ccb8
4 changed files with 26 additions and 20 deletions
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11
src/enc/frame.c
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@ -695,7 +695,7 @@ int VP8EncLoop(VP8Encoder* const enc) {
VP8EncIterator it;
VP8ModeScore info;
const int dont_use_skip = !enc->proba_.use_skip_proba_;
const int rd_opt = enc->rd_opt_level_;
const VP8RDLevel rd_opt = enc->rd_opt_level_;
const int kAverageBytesPerMB = 5; // TODO: have a kTable[quality/10]
const int bytes_per_parts =
enc->mb_w_ * enc->mb_h_ * kAverageBytesPerMB / enc->num_parts_;
@ -762,8 +762,8 @@ int VP8EncLoop(VP8Encoder* const enc) {
#define kHeaderSizeEstimate (15 + 20 + 10) // TODO: fix better
static int OneStatPass(VP8Encoder* const enc, float q, int rd_opt, int nb_mbs,
float* const PSNR, int percent_delta) {
static int OneStatPass(VP8Encoder* const enc, float q, VP8RDLevel rd_opt,
int nb_mbs, float* const PSNR, int percent_delta) {
VP8EncIterator it;
uint64_t size = 0;
uint64_t distortion = 0;
@ -829,7 +829,7 @@ int VP8StatLoop(VP8Encoder* const enc) {
// No target size: just do several pass without changing 'q'
if (!do_search) {
for (pass = 0; pass < max_passes; ++pass) {
const int rd_opt = (enc->method_ > 2);
const VP8RDLevel rd_opt = (enc->method_ > 2) ? RD_OPT_BASIC : RD_OPT_NONE;
if (!OneStatPass(enc, q, rd_opt, nb_mbs, NULL, percent_per_pass)) {
return 0;
}
@ -837,10 +837,9 @@ int VP8StatLoop(VP8Encoder* const enc) {
} else {
// binary search for a size close to target
for (pass = 0; pass < max_passes && (dqs[pass] > 0); ++pass) {
const int rd_opt = 1;
float PSNR;
int criterion;
const int size = OneStatPass(enc, q, rd_opt, nb_mbs, &PSNR,
const int size = OneStatPass(enc, q, RD_OPT_BASIC, nb_mbs, &PSNR,
percent_per_pass);
#if DEBUG_SEARCH
printf("#%d size=%d PSNR=%.2f q=%.2f\n", pass, size, PSNR, q);

11
src/enc/quant.c
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@ -956,7 +956,8 @@ static void SimpleQuantize(VP8EncIterator* const it, VP8ModeScore* const rd) {
//------------------------------------------------------------------------------
// Entry point
int VP8Decimate(VP8EncIterator* const it, VP8ModeScore* const rd, int rd_opt) {
int VP8Decimate(VP8EncIterator* const it, VP8ModeScore* const rd,
VP8RDLevel rd_opt) {
int is_skipped;
InitScore(rd);
@ -966,16 +967,14 @@ int VP8Decimate(VP8EncIterator* const it, VP8ModeScore* const rd, int rd_opt) {
VP8MakeLuma16Preds(it);
VP8MakeChroma8Preds(it);
// for rd_opt = 2, we perform trellis-quant on the final decision only.
// for rd_opt > 2, we use it for every scoring (=much slower).
if (rd_opt > 0) {
it->do_trellis_ = (rd_opt > 2);
if (rd_opt > RD_OPT_NONE) {
it->do_trellis_ = (rd_opt >= RD_OPT_TRELLIS_ALL);
PickBestIntra16(it, rd);
if (it->enc_->method_ >= 2) {
PickBestIntra4(it, rd);
}
PickBestUV(it, rd);
if (rd_opt == 2) {
if (rd_opt == RD_OPT_TRELLIS) { // finish off with trellis-optim now
it->do_trellis_ = 1;
SimpleQuantize(it, rd);
}

12
src/enc/vp8enci.h
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@ -57,6 +57,13 @@ enum { NUM_MB_SEGMENTS = 4,
MAX_VARIABLE_LEVEL = 67 // last (inclusive) level with variable cost
};
typedef enum { // Rate-distortion optimization levels
RD_OPT_NONE = 0, // no rd-opt
RD_OPT_BASIC = 1, // basic scoring (no trellis)
RD_OPT_TRELLIS = 2, // perform trellis-quant on the final decision only
RD_OPT_TRELLIS_ALL = 3 // trellis-quant for every scoring (much slower)
} VP8RDLevel;
// YUV-cache parameters. Cache is 16-pixels wide.
// The original or reconstructed samples can be accessed using VP8Scan[]
// The predicted blocks can be accessed using offsets to yuv_p_ and
@ -406,7 +413,7 @@ struct VP8Encoder {
// quality/speed settings
int method_; // 0=fastest, 6=best/slowest.
int rd_opt_level_; // Deduced from method_.
VP8RDLevel rd_opt_level_; // Deduced from method_.
int max_i4_header_bits_; // partition #0 safeness factor
// Memory
@ -486,7 +493,8 @@ int VP8EncAnalyze(VP8Encoder* const enc);
// Sets up segment's quantization values, base_quant_ and filter strengths.
void VP8SetSegmentParams(VP8Encoder* const enc, float quality);
// Pick best modes and fills the levels. Returns true if skipped.
int VP8Decimate(VP8EncIterator* const it, VP8ModeScore* const rd, int rd_opt);
int VP8Decimate(VP8EncIterator* const it, VP8ModeScore* const rd,
VP8RDLevel rd_opt);
// in alpha.c
void VP8EncInitAlpha(VP8Encoder* const enc); // initialize alpha compression

8
src/enc/webpenc.c
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@ -114,10 +114,10 @@ static void MapConfigToTools(VP8Encoder* const enc) {
const int method = enc->config_->method;
const int limit = 100 - enc->config_->partition_limit;
enc->method_ = method;
enc->rd_opt_level_ = (method >= 6) ? 3
: (method >= 5) ? 2
: (method >= 3) ? 1
: 0;
enc->rd_opt_level_ = (method >= 6) ? RD_OPT_TRELLIS_ALL
: (method >= 5) ? RD_OPT_TRELLIS
: (method >= 3) ? RD_OPT_BASIC
: RD_OPT_NONE;
enc->max_i4_header_bits_ =
256 * 16 * 16 * // upper bound: up to 16bit per 4x4 block
(limit * limit) / (100 * 100); // ... modulated with a quadratic curve.