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Turning model-based updates on with modelcoefprob 

This patch changes the default with the modecoefprob expt
to use mode-based forward updates with one-node pegged
modeling.

The maximum difference with fully trained tables is now
less that 0.1%.

Change-Id: I06b44322e10c6703f93f3c1d48d973b1136a0618
This commit is contained in:
Deb Mukherjee 2013-03-26 08:34:56 -07:00
Родитель c18b2617a4
Коммит 66f413af4f
5 изменённых файлов: 53 добавлений и 879 удалений
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869
vp9/common/vp9_entropy.c
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6
vp9/common/vp9_entropy.h
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@ -153,22 +153,18 @@ const int *vp9_get_coef_neighbors_handle(const int *scan, int *pad);
#define UNCONSTRAINED_NODES 3 // Choose one of 2 or 3
// whether forward updates are model-based
#define MODEL_BASED_UPDATE 0
#define MODEL_BASED_UPDATE 1
// if model-based how many nodes are unconstrained
#define UNCONSTRAINED_UPDATE_NODES 3
// whether backward updates are model-based
#define MODEL_BASED_ADAPT 0
#define UNCONSTRAINED_ADAPT_NODES 3
// whether to adjust the coef probs for key frames based on qindex
#define ADJUST_KF_COEF_PROBS 0
typedef vp9_prob vp9_coeff_probs_model[REF_TYPES][COEF_BANDS]
[PREV_COEF_CONTEXTS][2];
extern const vp9_prob vp9_modelcoefprobs[COEFPROB_MODELS][ENTROPY_NODES - 1];
void vp9_get_model_distribution(vp9_prob model, vp9_prob *tree_probs,
int b, int r);
void vp9_adjust_default_coef_probs(struct VP9Common *cm);
#endif // CONFIG_MODELCOEFPROB
#if CONFIG_CODE_NONZEROCOUNT

18
vp9/decoder/vp9_decodframe.c
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@ -1127,7 +1127,8 @@ static void read_nzc_probs(VP9_COMMON *cm,
}
#endif // CONFIG_CODE_NONZEROCOUNT
static void read_coef_probs_common(BOOL_DECODER* const bc,
static void read_coef_probs_common(VP9D_COMP *pbi,
BOOL_DECODER* const bc,
vp9_coeff_probs *coef_probs,
TX_SIZE tx_size) {
#if CONFIG_MODELCOEFPROB && MODEL_BASED_UPDATE
@ -1172,16 +1173,16 @@ static void read_coef_probs_common(BOOL_DECODER* const bc,
static void read_coef_probs(VP9D_COMP *pbi, BOOL_DECODER* const bc) {
VP9_COMMON *const pc = &pbi->common;
read_coef_probs_common(bc, pc->fc.coef_probs_4x4, TX_4X4);
read_coef_probs_common(pbi, bc, pc->fc.coef_probs_4x4, TX_4X4);
if (pbi->common.txfm_mode != ONLY_4X4)
read_coef_probs_common(bc, pc->fc.coef_probs_8x8, TX_8X8);
read_coef_probs_common(pbi, bc, pc->fc.coef_probs_8x8, TX_8X8);
if (pbi->common.txfm_mode > ALLOW_8X8)
read_coef_probs_common(bc, pc->fc.coef_probs_16x16, TX_16X16);
read_coef_probs_common(pbi, bc, pc->fc.coef_probs_16x16, TX_16X16);
if (pbi->common.txfm_mode > ALLOW_16X16)
read_coef_probs_common(bc, pc->fc.coef_probs_32x32, TX_32X32);
read_coef_probs_common(pbi, bc, pc->fc.coef_probs_32x32, TX_32X32);
}
static void update_frame_size(VP9D_COMP *pbi) {
@ -1707,9 +1708,10 @@ int vp9_decode_frame(VP9D_COMP *pbi, const uint8_t **p_data_end) {
if (vp9_read(&header_bc, 252))
pc->fc.vp9_mode_contexts[i][j] = vp9_read_prob(&header_bc);
}
#if CONFIG_MODELCOEFPROB && ADJUST_KF_COEF_PROBS
if (pc->frame_type == KEY_FRAME)
vp9_adjust_default_coef_probs(pc);
#if CONFIG_MODELCOEFPROB
if (pc->frame_type == KEY_FRAME) {
vp9_default_coef_probs(pc);
}
#endif
#if CONFIG_NEW_MVREF

18
vp9/encoder/vp9_bitstream.c
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@ -404,7 +404,7 @@ static int prob_diff_update_savings_search_model(const unsigned int *ct,
const vp9_prob *oldp,
vp9_prob *bestp,
const vp9_prob upd,
int b, int r) {
int b, int r, int q) {
int i, old_b, new_b, update_b, savings, bestsavings, step;
int newp;
vp9_prob bestnewp, newplist[ENTROPY_NODES];
@ -2068,8 +2068,8 @@ static void update_nzc_probs(VP9_COMP* cpi,
#endif // CONFIG_CODE_NONZEROCOUNT
static void update_coef_probs_common(vp9_writer* const bc,
#ifdef ENTROPY_STATS
VP9_COMP *cpi,
#ifdef ENTROPY_STATS
vp9_coeff_stats *tree_update_hist,
#endif
vp9_coeff_probs *new_frame_coef_probs,
@ -2112,7 +2112,8 @@ static void update_coef_probs_common(vp9_writer* const bc,
if (t == UNCONSTRAINED_NODES - 1)
s = prob_diff_update_savings_search_model(
frame_branch_ct[i][j][k][l][0],
old_frame_coef_probs[i][j][k][l], &newp, upd, i, j);
old_frame_coef_probs[i][j][k][l], &newp, upd, i, j,
cpi->common.base_qindex);
else
#endif
s = prob_diff_update_savings_search(
@ -2166,7 +2167,8 @@ static void update_coef_probs_common(vp9_writer* const bc,
if (t == UNCONSTRAINED_NODES - 1)
s = prob_diff_update_savings_search_model(
frame_branch_ct[i][j][k][l][0],
old_frame_coef_probs[i][j][k][l], &newp, upd, i, j);
old_frame_coef_probs[i][j][k][l], &newp, upd, i, j,
cpi->common.base_qindex);
else
#endif
s = prob_diff_update_savings_search(
@ -2209,8 +2211,8 @@ static void update_coef_probs(VP9_COMP* const cpi, vp9_writer* const bc) {
build_coeff_contexts(cpi);
update_coef_probs_common(bc,
#ifdef ENTROPY_STATS
cpi,
#ifdef ENTROPY_STATS
tree_update_hist_4x4,
#endif
cpi->frame_coef_probs_4x4,
@ -2221,8 +2223,8 @@ static void update_coef_probs(VP9_COMP* const cpi, vp9_writer* const bc) {
/* do not do this if not even allowed */
if (cpi->common.txfm_mode != ONLY_4X4) {
update_coef_probs_common(bc,
#ifdef ENTROPY_STATS
cpi,
#ifdef ENTROPY_STATS
tree_update_hist_8x8,
#endif
cpi->frame_coef_probs_8x8,
@ -2233,8 +2235,8 @@ static void update_coef_probs(VP9_COMP* const cpi, vp9_writer* const bc) {
if (cpi->common.txfm_mode > ALLOW_8X8) {
update_coef_probs_common(bc,
#ifdef ENTROPY_STATS
cpi,
#ifdef ENTROPY_STATS
tree_update_hist_16x16,
#endif
cpi->frame_coef_probs_16x16,
@ -2245,8 +2247,8 @@ static void update_coef_probs(VP9_COMP* const cpi, vp9_writer* const bc) {
if (cpi->common.txfm_mode > ALLOW_16X16) {
update_coef_probs_common(bc,
#ifdef ENTROPY_STATS
cpi,
#ifdef ENTROPY_STATS
tree_update_hist_32x32,
#endif
cpi->frame_coef_probs_32x32,

21
vp9/encoder/vp9_onyx_if.c
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@ -2943,25 +2943,26 @@ static void encode_frame_to_data_rate(VP9_COMP *cpi,
// Set up entropy depending on frame type.
if (cm->frame_type == KEY_FRAME) {
/* Choose which entropy context to use. When using a forward reference
* frame, it immediately follows the keyframe, and thus benefits from
* using the same entropy context established by the keyframe. Otherwise,
* use the default context 0.
*/
* frame, it immediately follows the keyframe, and thus benefits from
* using the same entropy context established by the keyframe. Otherwise,
* use the default context 0.
*/
cm->frame_context_idx = cpi->oxcf.play_alternate;
vp9_setup_key_frame(cpi);
} else {
/* Choose which entropy context to use. Currently there are only two
* contexts used, one for normal frames and one for alt ref frames.
*/
/* Choose which entropy context to use. Currently there are only two
* contexts used, one for normal frames and one for alt ref frames.
*/
cpi->common.frame_context_idx = cpi->refresh_alt_ref_frame;
vp9_setup_inter_frame(cpi);
}
}
// transform / motion compensation build reconstruction frame
#if CONFIG_MODELCOEFPROB && ADJUST_KF_COEF_PROBS
if (cm->frame_type == KEY_FRAME)
vp9_adjust_default_coef_probs(cm);
#if CONFIG_MODELCOEFPROB
if (cm->frame_type == KEY_FRAME) {
vp9_default_coef_probs(cm);
}
#endif
vp9_encode_frame(cpi);