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BitTrace: if BITTRACE is > 0, record and print syntax bits used

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* Bittrace decoding is ~3x slower.
* Binary is the same byte-wise if BITTRACE=0
* Example output:
=== Bit traces ===
global-header    :    174 bytes   	[ 0.69%] [count:    1850]
segments         :    246 bytes   	[ 0.98%] [count:    3072]
block-size       :    170 bytes   	[ 0.68%] [count:    1536]
pred-modes       :   3829 bytes   	[15.27%] [count:   51458]
pred-modes-uv    :    279 bytes   	[ 1.11%] [count:    2329]
coeffs           :  20370 bytes   	[81.27%] [count:  212914]
Total: 25065 bytes

Change-Id: Ie32569c4e54a7ec13264e68d2dae2ce45c8536cb
This commit is contained in:
Pascal Massimino
2019-03-12 09:48:37 +01:00
parent 067031eaed
commit fcfd9c71b4
7 changed files with 203 additions and 86 deletions
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17
src/dec/quant_dec.c
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@@ -61,12 +61,17 @@ static const uint16_t kAcTable[128] = {
void VP8ParseQuant(VP8Decoder* const dec) {
VP8BitReader* const br = &dec->br_;
const int base_q0 = VP8GetValue(br, 7);
const int dqy1_dc = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
const int dqy2_dc = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
const int dqy2_ac = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
const int dquv_dc = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
const int dquv_ac = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
const int base_q0 = VP8GetValue(br, 7, "global-header");
const int dqy1_dc = VP8Get(br, "global-header") ?
VP8GetSignedValue(br, 4, "global-header") : 0;
const int dqy2_dc = VP8Get(br, "global-header") ?
VP8GetSignedValue(br, 4, "global-header") : 0;
const int dqy2_ac = VP8Get(br, "global-header") ?
VP8GetSignedValue(br, 4, "global-header") : 0;
const int dquv_dc = VP8Get(br, "global-header") ?
VP8GetSignedValue(br, 4, "global-header") : 0;
const int dquv_ac = VP8Get(br, "global-header") ?
VP8GetSignedValue(br, 4, "global-header") : 0;
const VP8SegmentHeader* const hdr = &dec->segment_hdr_;
int i;