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Code Issues Releases Activity

libavcodec/dnxhdenc: add support for variable mircoblock counts

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dnxhr has variable resolution, 8160 is the mb num for 1920x1080

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Mark Reid 2016-07-16 19:37:38 -07:00 committed by Michael Niedermayer
parent c2cd1a5ea7
commit cdca1902ab
2 changed files with 24 additions and 19 deletions
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41
libavcodec/dnxhdenc.c
View File

@ -271,11 +271,11 @@ fail:
static av_cold int dnxhd_init_rc(DNXHDEncContext *ctx)
{
FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->mb_rc, (ctx->m.avctx->qmax + 1), 8160 * sizeof(RCEntry), fail);
FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->mb_rc, (ctx->m.avctx->qmax + 1),
ctx->m.mb_num * sizeof(RCEntry), fail);
if (ctx->m.avctx->mb_decision != FF_MB_DECISION_RD)
FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->mb_cmp,
ctx->m.mb_num, sizeof(RCCMPEntry), fail);
ctx->frame_bits = (ctx->cid_table->coding_unit_size -
640 - 4 - ctx->min_padding) * 8;
ctx->qscale = 1;
@ -661,8 +661,8 @@ static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg,
ssd += dnxhd_ssd_block(block, src_block);
}
}
ctx->mb_rc[qscale][mb].ssd = ssd;
ctx->mb_rc[qscale][mb].bits = ac_bits + dc_bits + 12 +
ctx->mb_rc[(qscale * ctx->m.mb_num) + mb].ssd = ssd;
ctx->mb_rc[(qscale * ctx->m.mb_num) + mb].bits = ac_bits + dc_bits + 12 +
8 * ctx->vlc_bits[0];
}
return 0;
@ -818,17 +818,20 @@ static int dnxhd_encode_rdo(AVCodecContext *avctx, DNXHDEncContext *ctx)
unsigned min = UINT_MAX;
int qscale = 1;
int mb = y * ctx->m.mb_width + x;
int rc = 0;
for (q = 1; q < avctx->qmax; q++) {
unsigned score = ctx->mb_rc[q][mb].bits * lambda +
((unsigned) ctx->mb_rc[q][mb].ssd << LAMBDA_FRAC_BITS);
int i = (q*ctx->m.mb_num) + mb;
unsigned score = ctx->mb_rc[i].bits * lambda +
((unsigned) ctx->mb_rc[i].ssd << LAMBDA_FRAC_BITS);
if (score < min) {
min = score;
qscale = q;
rc = i;
}
}
bits += ctx->mb_rc[qscale][mb].bits;
bits += ctx->mb_rc[rc].bits;
ctx->mb_qscale[mb] = qscale;
ctx->mb_bits[mb] = ctx->mb_rc[qscale][mb].bits;
ctx->mb_bits[mb] = ctx->mb_rc[rc].bits;
}
bits = (bits + 31) & ~31; // padding
if (bits > ctx->frame_bits)
@ -889,7 +892,7 @@ static int dnxhd_find_qscale(DNXHDEncContext *ctx)
NULL, NULL, ctx->m.mb_height);
for (y = 0; y < ctx->m.mb_height; y++) {
for (x = 0; x < ctx->m.mb_width; x++)
bits += ctx->mb_rc[qscale][y*ctx->m.mb_width+x].bits;
bits += ctx->mb_rc[(qscale*ctx->m.mb_num) + (y*ctx->m.mb_width+x)].bits;
bits = (bits+31)&~31; // padding
if (bits > ctx->frame_bits)
break;
@ -998,17 +1001,18 @@ static int dnxhd_encode_fast(AVCodecContext *avctx, DNXHDEncContext *ctx)
for (y = 0; y < ctx->m.mb_height; y++) {
for (x = 0; x < ctx->m.mb_width; x++) {
int mb = y * ctx->m.mb_width + x;
int rc = (ctx->qscale * ctx->m.mb_num ) + mb;
int delta_bits;
ctx->mb_qscale[mb] = ctx->qscale;
ctx->mb_bits[mb] = ctx->mb_rc[ctx->qscale][mb].bits;
max_bits += ctx->mb_rc[ctx->qscale][mb].bits;
ctx->mb_bits[mb] = ctx->mb_rc[rc].bits;
max_bits += ctx->mb_rc[rc].bits;
if (!RC_VARIANCE) {
delta_bits = ctx->mb_rc[ctx->qscale][mb].bits -
ctx->mb_rc[ctx->qscale + 1][mb].bits;
delta_bits = ctx->mb_rc[rc].bits -
ctx->mb_rc[rc + ctx->m.mb_num].bits;
ctx->mb_cmp[mb].mb = mb;
ctx->mb_cmp[mb].value =
delta_bits ? ((ctx->mb_rc[ctx->qscale][mb].ssd -
ctx->mb_rc[ctx->qscale + 1][mb].ssd) * 100) /
delta_bits ? ((ctx->mb_rc[rc].ssd -
ctx->mb_rc[rc + ctx->m.mb_num].ssd) * 100) /
delta_bits
: INT_MIN; // avoid increasing qscale
}
@ -1022,10 +1026,11 @@ static int dnxhd_encode_fast(AVCodecContext *avctx, DNXHDEncContext *ctx)
radix_sort(ctx->mb_cmp, ctx->m.mb_num);
for (x = 0; x < ctx->m.mb_num && max_bits > ctx->frame_bits; x++) {
int mb = ctx->mb_cmp[x].mb;
max_bits -= ctx->mb_rc[ctx->qscale][mb].bits -
ctx->mb_rc[ctx->qscale + 1][mb].bits;
int rc = (ctx->qscale * ctx->m.mb_num ) + mb;
max_bits -= ctx->mb_rc[rc].bits -
ctx->mb_rc[rc + ctx->m.mb_num].bits;
ctx->mb_qscale[mb] = ctx->qscale + 1;
ctx->mb_bits[mb] = ctx->mb_rc[ctx->qscale + 1][mb].bits;
ctx->mb_bits[mb] = ctx->mb_rc[rc + ctx->m.mb_num].bits;
}
}
return 0;

2
libavcodec/dnxhdenc.h
View File

@ -89,7 +89,7 @@ typedef struct DNXHDEncContext {
uint8_t *mb_qscale;
RCCMPEntry *mb_cmp;
RCEntry (*mb_rc)[8160];
RCEntry *mb_rc;
void (*get_pixels_8x4_sym)(int16_t * /* align 16 */,
const uint8_t *, ptrdiff_t);