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TAV/TAD fix wip

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minjaesong
2025-11-11 00:17:51 +09:00
parent c1d6a959f5
commit 9425c58e53
3 changed files with 168 additions and 187 deletions
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19
video_encoder/decoder_tav.c
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@@ -124,16 +124,25 @@ typedef struct {
static int calculate_subband_layout(int width, int height, int decomp_levels, dwt_subband_info_t *subbands) {
int subband_count = 0;
// generate division series
int widths[decomp_levels + 1]; widths[0] = width;
int heights[decomp_levels + 1]; heights[0] = height;
for (int i = 1; i < decomp_levels + 1; i++) {
widths[i] = (int)roundf(widths[i - 1] / 2.0f);
heights[i] = (int)roundf(heights[i - 1] / 2.0f);
}
// LL subband at maximum decomposition level
const int ll_width = width >> decomp_levels;
const int ll_height = height >> decomp_levels;
int ll_width = widths[decomp_levels];
int ll_height = heights[decomp_levels];
subbands[subband_count++] = (dwt_subband_info_t){decomp_levels, 0, 0, ll_width * ll_height};
int coeff_offset = ll_width * ll_height;
// LH, HL, HH subbands for each level from max down to 1
for (int level = decomp_levels; level >= 1; level--) {
const int level_width = width >> (decomp_levels - level + 1);
const int level_height = height >> (decomp_levels - level + 1);
int level_width = widths[decomp_levels - level + 1];
int level_height = heights[decomp_levels - level + 1];
const int subband_size = level_width * level_height;
// LH subband
@@ -422,7 +431,7 @@ static int calculate_dwt_levels(int chunk_size) {
static void dwt_97_inverse_1d(float *data, int length);
static void dwt_inverse_multilevel(float *data, int length, int levels) {
// Pre-calculate all intermediate lengths used during forward transform
// generate division series
// Forward uses: data[0..length-1], then data[0..(length+1)/2-1], etc.
int *lengths = malloc((levels + 1) * sizeof(int));
lengths[0] = length;