31 #define LONG_BITSTREAM_READER // some ProRes vlc codes require up to 28 bits to be read at once
56 uint8_t qmat_luma[64];
57 uint8_t qmat_chroma[64];
79 0, 1, 8, 9, 2, 3, 10, 11,
80 16, 17, 24, 25, 18, 19, 26, 27,
81 4, 5, 12, 20, 13, 6, 7, 14,
82 21, 28, 29, 22, 15, 23, 30, 31,
83 32, 33, 40, 48, 41, 34, 35, 42,
84 49, 56, 57, 50, 43, 36, 37, 44,
85 51, 58, 59, 52, 45, 38, 39, 46,
86 53, 60, 61, 54, 47, 55, 62, 63
90 0, 8, 1, 9, 16, 24, 17, 25,
91 2, 10, 3, 11, 18, 26, 19, 27,
92 32, 40, 33, 34, 41, 48, 56, 49,
93 42, 35, 43, 50, 57, 58, 51, 59,
94 4, 12, 5, 6, 13, 20, 28, 21,
95 14, 7, 15, 22, 29, 36, 44, 37,
96 30, 23, 31, 38, 45, 52, 60, 53,
97 46, 39, 47, 54, 61, 62, 55, 63
132 if (hdr_size > data_size) {
140 "unsupported header version: %d\n", version);
146 if (width != avctx->
width || height != avctx->
height) {
148 "picture dimension changed: old: %d x %d, new: %d x %d\n",
156 "unsupported frame type: %d\n", ctx->
frame_type);
172 "unsupported picture format: %d\n", ctx->
pic_format);
201 if (ptr - buf > hdr_size - 64) {
216 if (ptr - buf > hdr_size - 64) {
236 int i, hdr_size, pic_data_size, num_slices;
237 int slice_width_factor, slice_height_factor;
238 int remainder, num_x_slices;
239 const uint8_t *data_ptr, *index_ptr;
241 hdr_size = data_size > 0 ? buf[0] >> 3 : 0;
242 if (hdr_size < 8 || hdr_size > data_size) {
247 pic_data_size =
AV_RB32(buf + 1);
248 if (pic_data_size > data_size) {
253 slice_width_factor = buf[7] >> 4;
254 slice_height_factor = buf[7] & 0xF;
255 if (slice_width_factor > 3 || slice_height_factor) {
257 "unsupported slice dimension: %d x %d\n",
258 1 << slice_width_factor, 1 << slice_height_factor);
270 remainder = ctx->
num_x_mbs & ((1 << slice_width_factor) - 1);
271 num_x_slices = (ctx->
num_x_mbs >> slice_width_factor) + (remainder & 1) +
272 ((remainder >> 1) & 1) + ((remainder >> 2) & 1);
274 num_slices = num_x_slices * ctx->
num_y_mbs;
275 if (num_slices !=
AV_RB16(buf + 5)) {
288 if (hdr_size + num_slices * 2 > data_size) {
294 index_ptr = buf + hdr_size;
295 data_ptr = index_ptr + num_slices * 2;
297 for (i = 0; i < num_slices; i++) {
299 data_ptr +=
AV_RB16(index_ptr + i * 2);
303 if (data_ptr > buf + data_size) {
308 return pic_data_size;
317 unsigned int rice_order, exp_order, switch_bits;
318 unsigned int buf, code;
319 int log, prefix_len,
len;
326 switch_bits = (codebook & 3) + 1;
327 rice_order = codebook >> 5;
328 exp_order = (codebook >> 2) & 7;
330 log = 31 - av_log2(buf);
332 if (log < switch_bits) {
338 prefix_len = log + 1;
339 code = (log << rice_order) +
NEG_USR32(buf << prefix_len, rice_order);
343 len = (log << 1) - switch_bits + exp_order + 1;
344 code =
NEG_USR32(buf, len) - (1 << exp_order) + (switch_bits << rice_order);
353 #define LSB2SIGN(x) (-((x) & 1))
354 #define TOSIGNED(x) (((x) >> 1) ^ LSB2SIGN(x))
356 #define FIRST_DC_CB 0xB8 // rice_order = 5, exp_golomb_order = 6, switch_bits = 0
383 for (i = 1; i < nblocks; i++, out += 64) {
386 sign = -(((delta >> 15) & 1) ^ (code & 1));
387 delta = (((code + 1) >> 1) ^ sign) - sign;
409 { 5, 5, 3, 3, 0, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 2 };
418 int blocks_per_slice,
419 int plane_size_factor,
422 int pos, block_mask,
run,
level, sign, run_cb_index, lev_cb_index;
423 int max_coeffs, bits_left;
429 max_coeffs = blocks_per_slice << 6;
430 block_mask = blocks_per_slice - 1;
432 for (pos = blocks_per_slice - 1; pos < max_coeffs;) {
437 if (bits_left <= 0 || (bits_left <= 8 && !
show_bits(gb, bits_left)))
443 if (bits_left <= 0 || (bits_left <= 8 && !
show_bits(gb, bits_left)))
449 if (pos >= max_coeffs)
453 out[((pos & block_mask) << 6) + scan[pos >> plane_size_factor]] =
454 (level ^ sign) - sign;
464 int data_size, uint16_t *out_ptr,
465 int linesize,
int mbs_per_slice,
466 int blocks_per_mb,
int plane_size_factor,
471 int mb_num, blocks_per_slice;
473 blocks_per_slice = mbs_per_slice * blocks_per_mb;
475 memset(td->
blocks, 0, 8 * 4 * 64 *
sizeof(*td->
blocks));
487 for (mb_num = 0; mb_num < mbs_per_slice; mb_num++, out_ptr += blocks_per_mb * 4) {
488 ctx->
dsp.
idct_put(out_ptr, linesize, block_ptr, qmat);
490 if (blocks_per_mb > 2) {
491 ctx->
dsp.
idct_put(out_ptr + 8, linesize, block_ptr, qmat);
494 ctx->
dsp.
idct_put(out_ptr + linesize * 4, linesize, block_ptr, qmat);
496 if (blocks_per_mb > 2) {
497 ctx->
dsp.
idct_put(out_ptr + linesize * 4 + 8, linesize, block_ptr, qmat);
508 int mb_x_pos = td->
x_pos;
509 int mb_y_pos = td->
y_pos;
514 uint8_t *y_data, *u_data, *v_data;
516 int i, sf, slice_width_factor;
517 int slice_data_size, hdr_size, y_data_size, u_data_size, v_data_size;
518 int y_linesize, u_linesize, v_linesize;
523 slice_width_factor = av_log2(mbs_per_slice);
525 y_data = pic->
data[0];
526 u_data = pic->
data[1];
527 v_data = pic->
data[2];
534 y_data += y_linesize;
535 u_data += u_linesize;
536 v_data += v_linesize;
543 if (slice_data_size < 6) {
549 hdr_size = buf[0] >> 3;
550 y_data_size =
AV_RB16(buf + 2);
551 u_data_size =
AV_RB16(buf + 4);
552 v_data_size = hdr_size > 7 ?
AV_RB16(buf + 6) :
553 slice_data_size - y_data_size - u_data_size - hdr_size;
555 if (hdr_size + y_data_size + u_data_size + v_data_size > slice_data_size ||
556 v_data_size < 0 || hdr_size < 6) {
561 sf = av_clip(buf[1], 1, 224);
562 sf = sf > 128 ? (sf - 96) << 2 : sf;
568 for (i = 0; i < 64; i++) {
576 (uint16_t*) (y_data + (mb_y_pos << 4) * y_linesize +
577 (mb_x_pos << 5)), y_linesize,
578 mbs_per_slice, 4, slice_width_factor + 2,
583 (uint16_t*) (u_data + (mb_y_pos << 4) * u_linesize +
592 (uint16_t*) (v_data + (mb_y_pos << 4) * v_linesize +
605 int slice_num, slice_width, x_pos, y_pos;
610 for (y_pos = 0; y_pos < ctx->
num_y_mbs; y_pos++) {
613 for (x_pos = 0; x_pos < ctx->
num_x_mbs && slice_width;
614 x_pos += slice_width) {
615 while (ctx->
num_x_mbs - x_pos < slice_width)
633 #define FRAME_ID MKBETAG('i', 'c', 'p', 'f')
634 #define MOVE_DATA_PTR(nbytes) buf += (nbytes); buf_size -= (nbytes)
641 const uint8_t *buf = avpkt->
data;
642 int buf_size = avpkt->
size;
643 int frame_hdr_size, pic_num, pic_data_size;
646 if (buf_size < 28 || buf_size <
AV_RB32(buf) ||
655 if (frame_hdr_size < 0)
660 if (picture->
data[0])
669 if (pic_data_size < 0)