191
193
return ((lo + (lo << 16)) << 1);
194
static void gen_vector_table(TrueMotion1Context *s, uint8_t *sel_vector_table)
197
unsigned char delta_pair;
199
for (i = 0; i < 1024; i += 4)
201
len = *sel_vector_table++ / 2;
202
for (j = 0; j < len; j++)
204
delta_pair = *sel_vector_table++;
205
s->y_predictor_table[i+j] = 0xfffffffe &
206
make_ydt_entry(delta_pair >> 4, delta_pair & 0xf, s->ydt);
207
s->c_predictor_table[i+j] = 0xfffffffe &
208
make_cdt_entry(delta_pair >> 4, delta_pair & 0xf, s->cdt);
210
s->y_predictor_table[i+(j-1)] |= 1;
211
s->c_predictor_table[i+(j-1)] |= 1;
196
#ifdef WORDS_BIGENDIAN
197
static int make_ydt16_entry(int p2, int p1, int16_t *ydt)
199
static int make_ydt16_entry(int p1, int p2, int16_t *ydt)
205
lo += (lo << 6) + (lo << 11);
207
hi += (hi << 6) + (hi << 11);
208
return ((lo + (hi << 16)) << 1);
211
#ifdef WORDS_BIGENDIAN
212
static int make_cdt16_entry(int p2, int p1, int16_t *cdt)
214
static int make_cdt16_entry(int p1, int p2, int16_t *cdt)
222
return ((lo + (lo << 16)) << 1);
225
#ifdef WORDS_BIGENDIAN
226
static int make_ydt24_entry(int p2, int p1, int16_t *ydt)
228
static int make_ydt24_entry(int p1, int p2, int16_t *ydt)
235
return ((lo + (hi << 8)) << 1);
238
#ifdef WORDS_BIGENDIAN
239
static int make_cdt24_entry(int p2, int p1, int16_t *cdt)
241
static int make_cdt24_entry(int p1, int p2, int16_t *cdt)
251
static void gen_vector_table15(TrueMotion1Context *s, uint8_t *sel_vector_table)
254
unsigned char delta_pair;
256
for (i = 0; i < 1024; i += 4)
258
len = *sel_vector_table++ / 2;
259
for (j = 0; j < len; j++)
261
delta_pair = *sel_vector_table++;
262
s->y_predictor_table[i+j] = 0xfffffffe &
263
make_ydt15_entry(delta_pair >> 4, delta_pair & 0xf, s->ydt);
264
s->c_predictor_table[i+j] = 0xfffffffe &
265
make_cdt15_entry(delta_pair >> 4, delta_pair & 0xf, s->cdt);
267
s->y_predictor_table[i+(j-1)] |= 1;
268
s->c_predictor_table[i+(j-1)] |= 1;
272
static void gen_vector_table16(TrueMotion1Context *s, uint8_t *sel_vector_table)
275
unsigned char delta_pair;
277
for (i = 0; i < 1024; i += 4)
279
len = *sel_vector_table++ / 2;
280
for (j = 0; j < len; j++)
282
delta_pair = *sel_vector_table++;
283
s->y_predictor_table[i+j] = 0xfffffffe &
284
make_ydt16_entry(delta_pair >> 4, delta_pair & 0xf, s->ydt);
285
s->c_predictor_table[i+j] = 0xfffffffe &
286
make_cdt16_entry(delta_pair >> 4, delta_pair & 0xf, s->cdt);
288
s->y_predictor_table[i+(j-1)] |= 1;
289
s->c_predictor_table[i+(j-1)] |= 1;
293
static void gen_vector_table24(TrueMotion1Context *s, uint8_t *sel_vector_table)
296
unsigned char delta_pair;
298
for (i = 0; i < 1024; i += 4)
300
len = *sel_vector_table++ / 2;
301
for (j = 0; j < len; j++)
303
delta_pair = *sel_vector_table++;
304
s->y_predictor_table[i+j] = 0xfffffffe &
305
make_ydt24_entry(delta_pair >> 4, delta_pair & 0xf, s->ydt);
306
s->c_predictor_table[i+j] = 0xfffffffe &
307
make_cdt24_entry(delta_pair >> 4, delta_pair & 0xf, s->cdt);
308
s->fat_y_predictor_table[i+j] = 0xfffffffe &
309
make_ydt24_entry(delta_pair >> 4, delta_pair & 0xf, s->fat_ydt);
310
s->fat_c_predictor_table[i+j] = 0xfffffffe &
311
make_cdt24_entry(delta_pair >> 4, delta_pair & 0xf, s->fat_cdt);
313
s->y_predictor_table[i+(j-1)] |= 1;
314
s->c_predictor_table[i+(j-1)] |= 1;
315
s->fat_y_predictor_table[i+(j-1)] |= 1;
316
s->fat_c_predictor_table[i+(j-1)] |= 1;
229
334
header.header_size = ((s->buf[0] >> 5) | (s->buf[0] << 3)) & 0x7f;
230
335
if (s->buf[0] < 0x10)
232
av_log(s->avctx, AV_LOG_ERROR, "invalid header size\n");
337
av_log(s->avctx, AV_LOG_ERROR, "invalid header size (%d)\n", s->buf[0]);
236
341
/* unscramble the header bytes with a XOR operation */
237
342
memset(header_buffer, 0, 128);
238
343
for (i = 1; i < header.header_size; i++)
239
header_buffer[i - 1] = s->buf[i] ^ s->buf[i + 1];
344
header_buffer[i - 1] = s->buf[i] ^ s->buf[i + 1];
240
346
header.compression = header_buffer[0];
241
347
header.deltaset = header_buffer[1];
242
348
header.vectable = header_buffer[2];
411
// FIXME: where to place this ?!?!
412
if (compression_types[header.compression].algorithm == ALGO_RGB24H)
413
s->avctx->pix_fmt = PIX_FMT_BGR24;
415
s->avctx->pix_fmt = PIX_FMT_RGB555; // RGB565 is supported aswell
301
417
if ((header.deltaset != s->last_deltaset) || (header.vectable != s->last_vectable))
303
419
if (compression_types[header.compression].algorithm == ALGO_RGB24H)
305
av_log(s->avctx, AV_LOG_ERROR, "24bit compression not yet supported\n");
420
gen_vector_table24(s, sel_vector_table);
308
gen_vector_table(s, sel_vector_table);
422
if (s->avctx->pix_fmt == PIX_FMT_RGB555)
423
gen_vector_table15(s, sel_vector_table);
425
gen_vector_table16(s, sel_vector_table);
311
428
/* set up pointers to the other key data chunks */
327
444
s->block_height = compression_types[header.compression].block_height;
328
445
s->block_type = compression_types[header.compression].block_type;
447
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
448
av_log(s->avctx, AV_LOG_INFO, "tables: %d / %d c:%d %dx%d t:%d %s%s%s%s\n",
449
s->last_deltaset, s->last_vectable, s->compression, s->block_width,
450
s->block_height, s->block_type,
451
s->flags & FLAG_KEYFRAME ? " KEY" : "",
452
s->flags & FLAG_INTERFRAME ? " INTER" : "",
453
s->flags & FLAG_SPRITE ? " SPRITE" : "",
454
s->flags & FLAG_INTERPOLATED ? " INTERPOL" : "");
330
456
return header.header_size;
724
static void truemotion1_decode_24bit(TrueMotion1Context *s)
727
int pixels_left; /* remaining pixels on this line */
728
unsigned int predictor_pair;
729
unsigned int horiz_pred;
730
unsigned int c_horiz_pred;
731
unsigned int *vert_pred;
732
unsigned int *current_pixel_pair;
733
unsigned int *prev_pixel_pair;
734
unsigned char *current_line = s->frame.data[0];
735
unsigned char *prev_line = s->prev_frame.data[0];
736
int keyframe = s->flags & FLAG_KEYFRAME;
738
/* these variables are for managing the stream of macroblock change bits */
739
unsigned char *mb_change_bits = s->mb_change_bits;
740
unsigned char mb_change_byte;
741
unsigned char mb_change_byte_mask;
744
/* these variables are for managing the main index stream */
745
int index_stream_index = 0; /* yes, the index into the index stream */
748
/* clean out the line buffer */
749
memset(s->vert_pred, 0, s->avctx->width * sizeof(unsigned short));
753
for (y = 0; y < s->avctx->height; y++) {
755
/* re-init variables for the next line iteration */
756
horiz_pred = c_horiz_pred = 0;
757
current_pixel_pair = (unsigned int *)current_line;
758
prev_pixel_pair = (unsigned int *)prev_line;
759
vert_pred = s->vert_pred;
761
mb_change_byte = mb_change_bits[mb_change_index++];
762
mb_change_byte_mask = 0x01;
763
pixels_left = s->avctx->width;
765
while (pixels_left > 0) {
767
if (keyframe || ((mb_change_byte & mb_change_byte_mask) == 0)) {
771
/* if macroblock width is 2, apply C-Y-C-Y; else
773
if (s->block_width == 2) {
774
APPLY_C_PREDICTOR_24();
775
APPLY_Y_PREDICTOR_24();
777
// OUTPUT_PIXEL_PAIR_24_C();
778
APPLY_C_PREDICTOR_24();
779
APPLY_Y_PREDICTOR_24();
781
// OUTPUT_PIXEL_PAIR_24_C();
783
APPLY_C_PREDICTOR_24();
784
APPLY_Y_PREDICTOR_24();
786
// OUTPUT_PIXEL_PAIR_24_C();
787
APPLY_Y_PREDICTOR_24();
789
// OUTPUT_PIXEL_PAIR_24_C();
795
/* always apply 2 Y predictors on these iterations */
796
APPLY_Y_PREDICTOR_24();
798
APPLY_Y_PREDICTOR_24();
803
/* this iteration might be C-Y-C-Y, Y-Y, or C-Y-Y
804
* depending on the macroblock type */
805
if (s->block_type == BLOCK_2x2) {
806
APPLY_C_PREDICTOR_24();
807
APPLY_Y_PREDICTOR_24();
809
// OUTPUT_PIXEL_PAIR_24_C();
810
APPLY_C_PREDICTOR_24();
811
APPLY_Y_PREDICTOR_24();
813
// OUTPUT_PIXEL_PAIR_24_C();
814
} else if (s->block_type == BLOCK_4x2) {
815
APPLY_C_PREDICTOR_24();
816
APPLY_Y_PREDICTOR_24();
818
// OUTPUT_PIXEL_PAIR_24_C();
819
APPLY_Y_PREDICTOR_24();
821
// OUTPUT_PIXEL_PAIR_24_C();
823
APPLY_Y_PREDICTOR_24();
825
APPLY_Y_PREDICTOR_24();
833
/* skip (copy) four pixels, but reassign the horizontal
835
*current_pixel_pair = *prev_pixel_pair++;
836
*vert_pred++ = *current_pixel_pair++;
837
*current_pixel_pair = *prev_pixel_pair++;
838
horiz_pred = *current_pixel_pair - *vert_pred;
839
// c_horiz_pred = *current_pixel_pair - *vert_pred;
840
*vert_pred++ = *current_pixel_pair++;
845
mb_change_byte_mask <<= 1;
848
if (!mb_change_byte_mask) {
849
mb_change_byte = mb_change_bits[mb_change_index++];
850
mb_change_byte_mask = 0x01;
857
/* next change row */
858
if (((y + 1) & 3) == 0)
859
mb_change_bits += s->mb_change_bits_row_size;
861
current_line += s->frame.linesize[0];
862
prev_line += s->prev_frame.linesize[0];
531
867
static int truemotion1_decode_frame(AVCodecContext *avctx,
532
868
void *data, int *data_size,
533
869
uint8_t *buf, int buf_size)
550
880
if (truemotion1_decode_header(s) == -1)
883
s->frame.reference = 1;
884
if (avctx->get_buffer(avctx, &s->frame) < 0) {
885
av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
553
889
/* check for a do-nothing frame and copy the previous frame */
554
890
if (compression_types[s->compression].algorithm == ALGO_NOP)
556
892
memcpy(s->frame.data[0], s->prev_frame.data[0],
557
893
s->frame.linesize[0] * s->avctx->height);
558
894
} else if (compression_types[s->compression].algorithm == ALGO_RGB24H) {
559
av_log(s->avctx, AV_LOG_ERROR, "24bit compression not yet supported\n");
895
truemotion1_decode_24bit(s);
561
897
truemotion1_decode_16bit(s);