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TAV: videotex mode; TSVM documentation fix

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minjaesong
2025-11-21 16:53:35 +09:00
parent a61a21d28b
commit 2533b2dc19
7 changed files with 794 additions and 22 deletions
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13
video_encoder/encoder_tav.c
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@@ -1826,7 +1826,6 @@ typedef struct tav_encoder_s {
int separate_audio_track; // 1 = write entire MP2 file as packet 0x40 after header, 0 = interleave audio (default)
int pcm8_audio; // 1 = use 8-bit PCM audio (packet 0x21), 0 = use MP2 (default)
int tad_audio; // 1 = use TAD audio (packet 0x24), 0 = use MP2/PCM8 (default, quality follows quality_level)
int enable_letterbox_detect; // 1 = detect and emit letterbox/pillarbox packets (default), 0 = disable
int enable_crop_encoding; // 1 = encode cropped active region only (Phase 2), 0 = encode full frame (default)
// Active region tracking (for Phase 2 crop encoding)
@@ -2454,7 +2453,6 @@ static tav_encoder_t* create_encoder(void) {
enc->separate_audio_track = 0; // Default: interleave audio packets
enc->pcm8_audio = 0; // Default: use MP2 audio
enc->tad_audio = 0; // Default: use MP2 audio (TAD quality follows quality_level)
enc->enable_letterbox_detect = 1; // Default: enable letterbox/pillarbox detection
enc->enable_crop_encoding = 0; // Default: disabled (Phase 2 experimental)
// Active region tracking (initialized to full frame, updated when crop encoding enabled)
@@ -8736,7 +8734,7 @@ static void normalize_dimension_clusters(uint16_t *values, int count) {
// Write all screen masking packets before first frame (similar to SSF-TC subtitles)
// Uses median filtering + clustering to normalize geometry to predominant aspect ratios
static void write_all_screen_mask_packets(tav_encoder_t *enc, FILE *output) {
if (!enc->enable_letterbox_detect || !enc->two_pass_mode) {
if (!enc->enable_crop_encoding || !enc->two_pass_mode) {
return; // Letterbox detection requires two-pass mode
}
@@ -10412,7 +10410,7 @@ static int two_pass_first_pass(tav_encoder_t *enc, const char *input_file) {
}
// Detect letterbox/pillarbox if enabled
if (enc->enable_letterbox_detect) {
if (enc->enable_crop_encoding) {
// Set current_frame_rgb temporarily for detection
uint8_t *saved_current = enc->current_frame_rgb;
enc->current_frame_rgb = frame_rgb;
@@ -10666,7 +10664,6 @@ int main(int argc, char *argv[]) {
{"tad-audio", no_argument, 0, 1028},
{"raw-coeffs", no_argument, 0, 1029},
{"single-pass", no_argument, 0, 1050}, // disable two-pass encoding with wavelet-based scene detection
{"no-letterbox-detect", no_argument, 0, 1051}, // disable letterbox/pillarbox detection
{"enable-crop-encoding", no_argument, 0, 1052}, // Phase 2: encode cropped active region only (experimental)
{"help", no_argument, 0, '?'},
{0, 0, 0, 0}
@@ -10898,10 +10895,6 @@ int main(int argc, char *argv[]) {
enc->two_pass_mode = 0;
printf("Two-pass wavelet-based scene change detection disabled\n");
break;
case 1051: // --no-letterbox-detect
enc->enable_letterbox_detect = 0;
printf("Letterbox/pillarbox detection disabled\n");
break;
case 1052: // --enable-crop-encoding
enc->enable_crop_encoding = 1;
printf("Phase 2 crop encoding enabled (experimental)\n");
@@ -11380,7 +11373,7 @@ int main(int argc, char *argv[]) {
enc->encoding_width = enc->width;
enc->encoding_height = enc->height;
if (enc->enable_crop_encoding && enc->enable_letterbox_detect && enc->two_pass_mode) {
if (enc->enable_crop_encoding && enc->two_pass_mode) {
// Phase 2: Use GOP-level dimensions for temporal DWT (3D-DWT mode)
// This ensures all frames in a GOP have the same encoding dimensions
// IMPORTANT: Always use GOP-level dimensions in temporal DWT mode, even if there's no cropping benefit,