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tavlib: quant fix 2

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minjaesong
2025-12-06 23:49:16 +09:00
parent a2233aedaf
commit 7f951366da
3 changed files with 39 additions and 33 deletions
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12
video_encoder/lib/libtavenc/tav_encoder_lib.c
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@@ -1464,15 +1464,9 @@ static int encode_gop_unified(tav_encoder_context_t *ctx, gop_slot_t *slot) {
int base_quantiser_co = QLUT[ctx->quantiser_co];
int base_quantiser_cg = QLUT[ctx->quantiser_cg];
// CRITICAL: Force perceptual quantization for GOPs to match old encoder behavior
// The old encoder's quantise_dwt_coefficients_perceptual_per_coeff() does NOT check
// perceptual_tuning flag - it always applies perceptual weights for GOP encoding.
// The --no-perceptual-tuning flag only affects I-frame encoding in the old encoder.
int saved_perceptual = ctx->compat_enc->perceptual_tuning;
ctx->compat_enc->perceptual_tuning = 1; // Force perceptual for GOP encoding
// Use perceptual or uniform quantization based on user setting
if (ctx->verbose) {
fprintf(stderr, "[DEBUG] GOP quantization: decomp_levels=%d, base_q_y=%d, perceptual=%d (forced on for GOP), preset=0x%02x\n",
fprintf(stderr, "[DEBUG] GOP quantization: decomp_levels=%d, base_q_y=%d, perceptual=%d, preset=0x%02x\n",
ctx->compat_enc->decomp_levels, base_quantiser_y, ctx->compat_enc->perceptual_tuning, ctx->compat_enc->encoder_preset);
}
@@ -1483,8 +1477,6 @@ static int encode_gop_unified(tav_encoder_context_t *ctx, gop_slot_t *slot) {
tav_quantise_3d_dwt(ctx->compat_enc, work_cg, quant_cg, num_frames, num_pixels,
base_quantiser_cg, 1);
ctx->compat_enc->perceptual_tuning = saved_perceptual; // Restore for I-frames
// Step 4: Unified GOP preprocessing (EZBC only)
size_t preprocess_capacity = num_pixels * num_frames * 3 * sizeof(int16_t) + 65536;
uint8_t *preprocess_buffer = tav_malloc(preprocess_capacity);