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TAV update: D1 and D1PAL as an acceptable resolution keyword

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minjaesong
2025-11-23 23:22:14 +09:00
parent 1c7ab17b1c
commit dd60b2c569
5 changed files with 270 additions and 16 deletions
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50
video_encoder/decoder_tav.c
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@@ -1023,6 +1023,52 @@ static void dwt_53_inverse_1d(float *data, int length) {
free(temp);
}
// Biorthogonal 2,4 (LeGall 2/4) INVERSE 1D transform
static void dwt_bior24_inverse_1d(float *data, int length) {
if (length < 2) return;
float *temp = malloc(sizeof(float) * length);
int half = (length + 1) / 2;
int i;
int nE = half;
int nO = length / 2;
float *even = temp;
float *odd = temp + nE;
// Load L and H
for (i = 0; i < nE; i++) {
even[i] = data[i];
}
for (i = 0; i < nO; i++) {
odd[i] = data[half + i];
}
// ---- Inverse update: s[i] = s[i] - 0.25*d[i] ----
for (i = 0; i < nE; i++) {
float d = (i < nO) ? odd[i] : 0.0f;
even[i] = even[i] - 0.25f * d;
}
// ---- Inverse predict: o[i] = d[i] + 0.5*s[i] ----
for (i = 0; i < nO; i++) {
odd[i] = odd[i] + 0.5f * even[i];
}
// Interleave back into output
for (i = 0; i < nO; i++) {
data[2 * i] = even[i];
data[2 * i + 1] = odd[i];
}
if (nE > nO) {
// Trailing even sample for odd length
data[2 * nO] = even[nO];
}
free(temp);
}
// Multi-level inverse DWT (matches TSVM exactly with correct non-power-of-2 handling)
static void apply_inverse_dwt_multilevel(float *data, int width, int height, int levels, int filter_type) {
int max_size = (width > height) ? width : height;
@@ -1044,14 +1090,14 @@ static void apply_inverse_dwt_multilevel(float *data, int width, int height, int
}
// Debug: Print dimension sequence
static int debug_once = 1;
/*static int debug_once = 1;
if (debug_once) {
fprintf(stderr, "DWT dimension sequence for %dx%d with %d levels:\n", width, height, levels);
for (int i = 0; i <= levels; i++) {
fprintf(stderr, " Level %d: %dx%d\n", i, widths[i], heights[i]);
}
debug_once = 0;
}
}*/
// TSVM: for (level in levels - 1 downTo 0)
// Apply inverse transforms using pre-calculated dimensions