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TAV: still picture impl

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minjaesong
2025-12-23 04:00:53 +09:00
parent 5d5576c077
commit 3421d71012
5 changed files with 365 additions and 47 deletions
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16
video_encoder/lib/libtavdec/tav_video_decoder.c
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@@ -1700,11 +1700,15 @@ int tav_video_decode_iframe(tav_video_context_t *ctx,
int16_t *coeffs_co = calloc(num_pixels, sizeof(int16_t));
int16_t *coeffs_cg = calloc(num_pixels, sizeof(int16_t));
// Skip 4-byte tile header: [mode][qY_override][qCo_override][qCg_override]
// The tile header is written by the encoder before the EZBC/twobit data
uint8_t *coeff_data = decompressed_data + 4;
// Postprocess based on entropy coder
if (ctx->params.entropy_coder == 0) {
postprocess_coefficients_twobit(decompressed_data, num_pixels, coeffs_y, coeffs_co, coeffs_cg);
postprocess_coefficients_twobit(coeff_data, num_pixels, coeffs_y, coeffs_co, coeffs_cg);
} else if (ctx->params.entropy_coder == 1) {
postprocess_coefficients_ezbc(decompressed_data, num_pixels, coeffs_y, coeffs_co, coeffs_cg, ctx->params.channel_layout);
postprocess_coefficients_ezbc(coeff_data, num_pixels, coeffs_y, coeffs_co, coeffs_cg, ctx->params.channel_layout);
}
if (should_free_data) {
@@ -1817,11 +1821,15 @@ int tav_video_decode_pframe(tav_video_context_t *ctx,
int16_t *coeffs_co = calloc(num_pixels, sizeof(int16_t));
int16_t *coeffs_cg = calloc(num_pixels, sizeof(int16_t));
// Skip 4-byte tile header: [mode][qY_override][qCo_override][qCg_override]
// The tile header is written by the encoder before the EZBC/twobit data
uint8_t *coeff_data = decompressed_data + 4;
// Postprocess
if (ctx->params.entropy_coder == 0) {
postprocess_coefficients_twobit(decompressed_data, num_pixels, coeffs_y, coeffs_co, coeffs_cg);
postprocess_coefficients_twobit(coeff_data, num_pixels, coeffs_y, coeffs_co, coeffs_cg);
} else if (ctx->params.entropy_coder == 1) {
postprocess_coefficients_ezbc(decompressed_data, num_pixels, coeffs_y, coeffs_co, coeffs_cg, ctx->params.channel_layout);
postprocess_coefficients_ezbc(coeff_data, num_pixels, coeffs_y, coeffs_co, coeffs_cg, ctx->params.channel_layout);
}
if (should_free_data) {