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TEV/TAV: SSF-TC impl

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minjaesong
2025-11-06 01:18:19 +09:00
parent af3679921d
commit 00c882aa8d
7 changed files with 403 additions and 118 deletions
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36
video_encoder/tav_inspector.c
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@@ -26,8 +26,8 @@
#define TAV_PACKET_AUDIO_MP2 0x20
#define TAV_PACKET_AUDIO_PCM8 0x21
#define TAV_PACKET_AUDIO_TAD 0x24
#define TAV_PACKET_SUBTITLE 0x30
#define TAV_PACKET_SUBTITLE_KAR 0x31
#define TAV_PACKET_SUBTITLE 0x30 // Legacy SSF (frame-locked)
#define TAV_PACKET_SUBTITLE_TC 0x31 // SSF-TC (timecode-based)
#define TAV_PACKET_AUDIO_TRACK 0x40
#define TAV_PACKET_VIDEO_CH2_I 0x70
#define TAV_PACKET_VIDEO_CH2_P 0x71
@@ -119,8 +119,8 @@ const char* get_packet_type_name(uint8_t type) {
case TAV_PACKET_AUDIO_MP2: return "AUDIO MP2";
case TAV_PACKET_AUDIO_PCM8: return "AUDIO PCM8 (zstd)";
case TAV_PACKET_AUDIO_TAD: return "AUDIO TAD (zstd)";
case TAV_PACKET_SUBTITLE: return "SUBTITLE (Simple)";
case TAV_PACKET_SUBTITLE_KAR: return "SUBTITLE (Karaoke)";
case TAV_PACKET_SUBTITLE: return "SUBTITLE (SSF frame-locked)";
case TAV_PACKET_SUBTITLE_TC: return "SUBTITLE (SSF-TC timecoded)";
case TAV_PACKET_AUDIO_TRACK: return "AUDIO TRACK (Separate MP2)";
case TAV_PACKET_EXIF: return "METADATA (EXIF)";
case TAV_PACKET_ID3V1: return "METADATA (ID3v1)";
@@ -151,7 +151,7 @@ int should_display_packet(uint8_t type, display_options_t *opts) {
(type >= 0x70 && type <= 0x7F))) return 1;
if (opts->show_audio && (type == TAV_PACKET_AUDIO_MP2 || type == TAV_PACKET_AUDIO_PCM8 ||
type == TAV_PACKET_AUDIO_TAD || type == TAV_PACKET_AUDIO_TRACK)) return 1;
if (opts->show_subtitles && (type == TAV_PACKET_SUBTITLE || type == TAV_PACKET_SUBTITLE_KAR)) return 1;
if (opts->show_subtitles && (type == TAV_PACKET_SUBTITLE || type == TAV_PACKET_SUBTITLE_TC)) return 1;
if (opts->show_timecode && type == TAV_PACKET_TIMECODE) return 1;
if (opts->show_metadata && (type >= 0xE0 && type <= 0xE4)) return 1;
if (opts->show_sync && (type == TAV_PACKET_SYNC || type == TAV_PACKET_SYNC_NTSC)) return 1;
@@ -160,7 +160,7 @@ int should_display_packet(uint8_t type, display_options_t *opts) {
return 0;
}
void print_subtitle_packet(FILE *fp, uint32_t size, int is_karaoke, int verbose) {
void print_subtitle_packet(FILE *fp, uint32_t size, int is_timecoded, int verbose) {
if (!verbose) {
fseek(fp, size, SEEK_CUR);
return;
@@ -174,10 +174,26 @@ void print_subtitle_packet(FILE *fp, uint32_t size, int is_karaoke, int verbose)
index |= (byte << (i * 8));
}
// Read timecode if SSF-TC (0x31)
uint64_t timecode_ns = 0;
int header_size = 4; // 3 bytes index + 1 byte opcode
if (is_timecoded) {
uint8_t timecode_bytes[8];
if (fread(timecode_bytes, 1, 8, fp) != 8) return;
for (int i = 0; i < 8; i++) {
timecode_ns |= ((uint64_t)timecode_bytes[i]) << (i * 8);
}
header_size += 8; // Add 8 bytes for timecode
}
uint8_t opcode;
if (fread(&opcode, 1, 1, fp) != 1) return;
printf(" [Index=%u, Opcode=0x%02X", index, opcode);
printf(" [Index=%u", index);
if (is_timecoded) {
printf(", Time=%.3fs", timecode_ns / 1000000000.0);
}
printf(", Opcode=0x%02X", opcode);
switch (opcode) {
case 0x01: printf(" (SHOW)"); break;
@@ -193,7 +209,7 @@ void print_subtitle_packet(FILE *fp, uint32_t size, int is_karaoke, int verbose)
printf("]");
// Read and display text content for SHOW commands
int remaining = size - 4; // Already read 3 (index) + 1 (opcode)
int remaining = size - header_size; // Already read index + timecode (if any) + opcode
if ((opcode == 0x01 || (opcode >= 0x10 && opcode <= 0x2F) || (opcode >= 0x30 && opcode <= 0x41)) && remaining > 0) {
char *text = malloc(remaining + 1);
if (text && fread(text, 1, remaining, fp) == remaining) {
@@ -788,14 +804,14 @@ static const char* VERDESC[] = {"null", "YCoCg tiled, uniform", "ICtCp tiled, un
}
case TAV_PACKET_SUBTITLE:
case TAV_PACKET_SUBTITLE_KAR: {
case TAV_PACKET_SUBTITLE_TC: {
stats.subtitle_count++;
uint32_t size;
if (fread(&size, sizeof(uint32_t), 1, fp) != 1) break;
if (!opts.summary_only && display) {
printf(" - size=%u bytes", size);
print_subtitle_packet(fp, size, packet_type == TAV_PACKET_SUBTITLE_KAR, opts.verbose);
print_subtitle_packet(fp, size, packet_type == TAV_PACKET_SUBTITLE_TC, opts.verbose);
} else {
fseek(fp, size, SEEK_CUR);
}