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monoblock TAV

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minjaesong
2025-09-18 00:07:03 +09:00
parent f4b03b55b6
commit 35f1a0c2f2
3 changed files with 44 additions and 40 deletions
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6
terranmon.txt
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@@ -806,12 +806,6 @@ similar to JPEG2000, providing superior compression efficiency and scalability c
to DCT-based codecs like TEV. Features include multi-resolution encoding, progressive
transmission capability, and region-of-interest coding.
## Version History
- Version 1.0: Initial DWT-based implementation with 5/3 reversible filter
- Version 1.1: Added 9/7 irreversible filter for higher compression
- Version 1.2: Multi-resolution pyramid encoding with up to 4 decomposition levels
- Version 1.3: Optimized 112x112 tiles for TSVM resolution with up to 6 decomposition levels
# File Structure
\x1F T S V M T A V
[HEADER]

77
video_encoder/encoder_tav.c
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@@ -184,12 +184,15 @@ typedef struct {
int intra_only; // Force all tiles to use INTRA mode (disable delta encoding)
int monoblock; // Single DWT tile mode (encode entire frame as one tile)
// Frame buffers
// Frame buffers - ping-pong implementation
uint8_t *frame_rgb[2]; // [0] and [1] alternate between current and previous
int frame_buffer_index; // 0 or 1, indicates which set is "current"
float *current_frame_y, *current_frame_co, *current_frame_cg;
// Convenience pointers (updated each frame to point to current ping-pong buffers)
uint8_t *current_frame_rgb;
uint8_t *previous_frame_rgb;
float *current_frame_y, *current_frame_co, *current_frame_cg;
float *previous_frame_y, *previous_frame_co, *previous_frame_cg;
// Tile processing
int tiles_x, tiles_y;
dwt_tile_t *tiles;
@@ -235,6 +238,16 @@ typedef struct {
// Wavelet filter constants removed - using lifting scheme implementation instead
// Swap ping-pong frame buffers (eliminates need for memcpy)
static void swap_frame_buffers(tav_encoder_t *enc) {
// Flip the buffer index
enc->frame_buffer_index = 1 - enc->frame_buffer_index;
// Update convenience pointers to point to the new current/previous buffers
enc->current_frame_rgb = enc->frame_rgb[enc->frame_buffer_index];
enc->previous_frame_rgb = enc->frame_rgb[1 - enc->frame_buffer_index];
}
// Parse resolution string like "1024x768" with keyword recognition
static int parse_resolution(const char *res_str, int *width, int *height) {
if (!res_str) return 0;
@@ -293,14 +306,14 @@ static void show_usage(const char *program_name) {
printf(" -s, --size WxH Video size (default: %dx%d)\n", DEFAULT_WIDTH, DEFAULT_HEIGHT);
printf(" -f, --fps N Output frames per second (enables frame rate conversion)\n");
printf(" -q, --quality N Quality level 0-5 (default: 2)\n");
printf(" -Q, --quantiser Y,Co,Cg Quantiser levels 0-100 for each channel\n");
printf(" -Q, --quantiser Y,Co,Cg Quantiser levels 0-255 for each channel (1: lossless, 255: potato)\n");
// printf(" -w, --wavelet N Wavelet filter: 0=5/3 reversible, 1=9/7 irreversible (default: 1)\n");
// printf(" -b, --bitrate N Target bitrate in kbps (enables bitrate control mode)\n");
printf(" -S, --subtitles FILE SubRip (.srt) or SAMI (.smi) subtitle file\n");
printf(" -v, --verbose Verbose output\n");
printf(" -t, --test Test mode: generate solid colour frames\n");
printf(" --lossless Lossless mode: use 5/3 reversible wavelet\n");
printf(" --delta-code Enable delta encoding (improved compression but noisy picture)\n");
printf(" --delta Enable delta encoding (improved compression but noisy picture)\n");
printf(" --ictcp Use ICtCp colour space instead of YCoCg-R (use when source is in BT.2100)\n");
printf(" --help Show this help\n\n");
@@ -321,15 +334,20 @@ static void show_usage(const char *program_name) {
for (int i = 0; i < 6; i++) {
printf("%d: Q %d \t", i, QUALITY_CG[i]);
}
printf("\n\nFeatures:\n");
printf("\n\nVideo Size Keywords:");
printf("\n -s cif: equal to 352x288");
printf("\n -s qcif: equal to 176x144");
printf("\n -s half: equal to %dx%d", DEFAULT_WIDTH >> 1, DEFAULT_HEIGHT >> 1);
printf("\n -s default: equal to %dx%d", DEFAULT_WIDTH, DEFAULT_HEIGHT);
printf("\n\n");
printf("Features:\n");
printf(" - Single DWT tile (monoblock) encoding for optimal quality\n");
printf(" - Full resolution YCoCg-R/ICtCp colour space\n");
printf(" - Lossless and lossy compression modes\n");
printf("\nExamples:\n");
printf(" %s -i input.mp4 -o output.mv3 # Default settings\n", program_name);
printf(" %s -i input.mkv -q 4 -w 1 -o output.mv3 # Maximum quality with 9/7 wavelet\n", program_name);
printf(" %s -i input.mkv -q 4 -o output.mv3 # At maximum quality\n", program_name);
printf(" %s -i input.avi --lossless -o output.mv3 # Lossless encoding\n", program_name);
// printf(" %s -i input.mp4 -b 800 -o output.mv3 # 800 kbps bitrate target\n", program_name);
printf(" %s -i input.webm -S subs.srt -o output.mv3 # With subtitles\n", program_name);
@@ -377,16 +395,18 @@ static int initialize_encoder(tav_encoder_t *enc) {
}
int num_tiles = enc->tiles_x * enc->tiles_y;
// Allocate frame buffers
// Allocate ping-pong frame buffers
size_t frame_size = enc->width * enc->height;
enc->current_frame_rgb = malloc(frame_size * 3);
enc->previous_frame_rgb = malloc(frame_size * 3);
enc->frame_rgb[0] = malloc(frame_size * 3);
enc->frame_rgb[1] = malloc(frame_size * 3);
// Initialize ping-pong buffer index and convenience pointers
enc->frame_buffer_index = 0;
enc->current_frame_rgb = enc->frame_rgb[0];
enc->previous_frame_rgb = enc->frame_rgb[1];
enc->current_frame_y = malloc(frame_size * sizeof(float));
enc->current_frame_co = malloc(frame_size * sizeof(float));
enc->current_frame_cg = malloc(frame_size * sizeof(float));
enc->previous_frame_y = malloc(frame_size * sizeof(float));
enc->previous_frame_co = malloc(frame_size * sizeof(float));
enc->previous_frame_cg = malloc(frame_size * sizeof(float));
// Allocate tile structures
enc->tiles = malloc(num_tiles * sizeof(dwt_tile_t));
@@ -423,9 +443,8 @@ static int initialize_encoder(tav_encoder_t *enc) {
enc->previous_coeffs_cg = malloc(total_coeff_size);
enc->previous_coeffs_allocated = 0; // Will be set to 1 after first I-frame
if (!enc->current_frame_rgb || !enc->previous_frame_rgb ||
if (!enc->frame_rgb[0] || !enc->frame_rgb[1] ||
!enc->current_frame_y || !enc->current_frame_co || !enc->current_frame_cg ||
!enc->previous_frame_y || !enc->previous_frame_co || !enc->previous_frame_cg ||
!enc->tiles || !enc->zstd_ctx || !enc->compressed_buffer ||
!enc->reusable_quantised_y || !enc->reusable_quantised_co || !enc->reusable_quantised_cg ||
!enc->previous_coeffs_y || !enc->previous_coeffs_co || !enc->previous_coeffs_cg) {
@@ -2180,13 +2199,14 @@ int main(int argc, char *argv[]) {
{"quantizer", required_argument, 0, 'Q'},
// {"wavelet", required_argument, 0, 'w'},
{"bitrate", required_argument, 0, 'b'},
{"subtitle", required_argument, 0, 'S'},
{"subtitles", required_argument, 0, 'S'},
{"verbose", no_argument, 0, 'v'},
{"test", no_argument, 0, 't'},
{"lossless", no_argument, 0, 1000},
{"delta-code", no_argument, 0, 1006},
{"delta", no_argument, 0, 1006},
{"ictcp", no_argument, 0, 1005},
{"help", no_argument, 0, 1004},
{"help", no_argument, 0, '?'},
{0, 0, 0, 0}
};
@@ -2509,13 +2529,8 @@ int main(int argc, char *argv[]) {
count_pframe++;
}
// Copy current frame to previous frame buffer
size_t float_frame_size = enc->width * enc->height * sizeof(float);
size_t rgb_frame_size = enc->width * enc->height * 3;
memcpy(enc->previous_frame_y, enc->current_frame_y, float_frame_size);
memcpy(enc->previous_frame_co, enc->current_frame_co, float_frame_size);
memcpy(enc->previous_frame_cg, enc->current_frame_cg, float_frame_size);
memcpy(enc->previous_frame_rgb, enc->current_frame_rgb, rgb_frame_size);
// Swap ping-pong buffers (eliminates memcpy operations)
swap_frame_buffers(enc);
frame_count++;
enc->frame_count = frame_count;
@@ -2586,14 +2601,8 @@ static void cleanup_encoder(tav_encoder_t *enc) {
free(enc->input_file);
free(enc->output_file);
free(enc->subtitle_file);
free(enc->current_frame_rgb);
free(enc->previous_frame_rgb);
free(enc->current_frame_y);
free(enc->current_frame_co);
free(enc->current_frame_cg);
free(enc->previous_frame_y);
free(enc->previous_frame_co);
free(enc->previous_frame_cg);
free(enc->frame_rgb[0]);
free(enc->frame_rgb[1]);
free(enc->tiles);
free(enc->compressed_buffer);
free(enc->mp2_buffer);

1
video_encoder/encoder_tev.c
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@@ -2626,6 +2626,7 @@ int main(int argc, char *argv[]) {
{"input", required_argument, 0, 'i'},
{"output", required_argument, 0, 'o'},
{"size", required_argument, 0, 's'},
{"subtitle", required_argument, 0, 'S'},
{"subtitles", required_argument, 0, 'S'},
{"fps", required_argument, 0, 'f'},
{"quality", required_argument, 0, 'q'},