31 #define LONG_BITSTREAM_READER // some ProRes vlc codes require up to 28 bits to be read at once
110 if (hdr_size > data_size) {
118 "unsupported header version: %d\n", version);
124 if (width != avctx->
width || height != avctx->
height) {
126 "picture dimension changed: old: %d x %d, new: %d x %d\n",
134 "unsupported frame type: %d\n", ctx->
frame_type);
150 "unsupported picture format: %d\n", ctx->
pic_format);
183 if (ptr - buf > hdr_size - 64) {
198 if (ptr - buf > hdr_size - 64) {
218 int i, hdr_size, pic_data_size, num_slices;
219 int slice_width_factor, slice_height_factor;
220 int remainder, num_x_slices;
221 const uint8_t *data_ptr, *index_ptr;
223 hdr_size = data_size > 0 ? buf[0] >> 3 : 0;
224 if (hdr_size < 8 || hdr_size > data_size) {
229 pic_data_size =
AV_RB32(buf + 1);
230 if (pic_data_size > data_size) {
235 slice_width_factor = buf[7] >> 4;
236 slice_height_factor = buf[7] & 0xF;
237 if (slice_width_factor > 3 || slice_height_factor) {
239 "unsupported slice dimension: %d x %d\n",
240 1 << slice_width_factor, 1 << slice_height_factor);
252 remainder = ctx->
num_x_mbs & ((1 << slice_width_factor) - 1);
253 num_x_slices = (ctx->
num_x_mbs >> slice_width_factor) + (remainder & 1) +
254 ((remainder >> 1) & 1) + ((remainder >> 2) & 1);
256 num_slices = num_x_slices * ctx->
num_y_mbs;
257 if (num_slices !=
AV_RB16(buf + 5)) {
270 if (hdr_size + num_slices * 2 > data_size) {
276 index_ptr = buf + hdr_size;
277 data_ptr = index_ptr + num_slices * 2;
279 for (i = 0; i < num_slices; i++) {
282 data_ptr +=
AV_RB16(index_ptr + i * 2);
287 if (data_ptr > buf + data_size) {
292 return pic_data_size;
301 unsigned int rice_order, exp_order, switch_bits;
302 unsigned int buf, code;
303 int log, prefix_len,
len;
310 switch_bits = (codebook & 3) + 1;
311 rice_order = codebook >> 5;
312 exp_order = (codebook >> 2) & 7;
316 if (log < switch_bits) {
322 prefix_len = log + 1;
323 code = (log << rice_order) +
NEG_USR32(buf << prefix_len, rice_order);
327 len = (log << 1) - switch_bits + exp_order + 1;
328 code =
NEG_USR32(buf, len) - (1 << exp_order) + (switch_bits << rice_order);
337 #define LSB2SIGN(x) (-((x) & 1))
338 #define TOSIGNED(x) (((x) >> 1) ^ LSB2SIGN(x))
357 for (i = 1; i < nblocks; i++, out += 64) {
360 sign = -(((delta >> 15) & 1) ^ (code & 1));
361 delta = (((code + 1) >> 1) ^ sign) - sign;
372 int blocks_per_slice,
373 int plane_size_factor,
376 int pos, block_mask,
run,
level, sign, run_cb_index, lev_cb_index;
377 int max_coeffs, bits_left;
383 max_coeffs = blocks_per_slice << 6;
384 block_mask = blocks_per_slice - 1;
386 for (pos = blocks_per_slice - 1; pos < max_coeffs;) {
391 if (bits_left <= 0 || (bits_left <= 8 && !
show_bits(gb, bits_left)))
397 if (bits_left <= 0 || (bits_left <= 8 && !
show_bits(gb, bits_left)))
403 if (pos >= max_coeffs)
407 out[((pos & block_mask) << 6) + scan[pos >> plane_size_factor]] =
408 (level ^ sign) - sign;
418 int data_size, uint16_t *out_ptr,
419 int linesize,
int mbs_per_slice,
420 int blocks_per_mb,
int plane_size_factor,
421 const int16_t *qmat,
int is_chroma)
425 int mb_num, blocks_per_slice;
427 blocks_per_slice = mbs_per_slice * blocks_per_mb;
429 memset(td->
blocks, 0, 8 * 4 * 64 *
sizeof(*td->
blocks));
442 for (mb_num = 0; mb_num < mbs_per_slice; mb_num++, out_ptr += blocks_per_mb * 4) {
443 ctx->
dsp.
idct_put(out_ptr, linesize, block_ptr, qmat);
445 if (blocks_per_mb > 2) {
446 ctx->
dsp.
idct_put(out_ptr + 8, linesize, block_ptr, qmat);
449 ctx->
dsp.
idct_put(out_ptr + linesize * 4, linesize, block_ptr, qmat);
451 if (blocks_per_mb > 2) {
452 ctx->
dsp.
idct_put(out_ptr + linesize * 4 + 8, linesize, block_ptr, qmat);
457 for (mb_num = 0; mb_num < mbs_per_slice; mb_num++, out_ptr += blocks_per_mb * 4) {
458 ctx->
dsp.
idct_put(out_ptr, linesize, block_ptr, qmat);
460 ctx->
dsp.
idct_put(out_ptr + linesize * 4, linesize, block_ptr, qmat);
462 if (blocks_per_mb > 2) {
463 ctx->
dsp.
idct_put(out_ptr + 8, linesize, block_ptr, qmat);
465 ctx->
dsp.
idct_put(out_ptr + linesize * 4 + 8, linesize, block_ptr, qmat);
477 int mb_x_pos = td->
x_pos;
478 int mb_y_pos = td->
y_pos;
483 uint8_t *y_data, *u_data, *v_data;
485 int i, sf, slice_width_factor;
486 int slice_data_size, hdr_size, y_data_size, u_data_size, v_data_size;
487 int y_linesize, u_linesize, v_linesize;
492 slice_width_factor =
av_log2(mbs_per_slice);
494 y_data = pic->
data[0];
495 u_data = pic->
data[1];
496 v_data = pic->
data[2];
503 y_data += y_linesize;
504 u_data += u_linesize;
505 v_data += v_linesize;
512 if (slice_data_size < 6) {
518 hdr_size = buf[0] >> 3;
519 y_data_size =
AV_RB16(buf + 2);
520 u_data_size =
AV_RB16(buf + 4);
521 v_data_size = hdr_size > 7 ?
AV_RB16(buf + 6) :
522 slice_data_size - y_data_size - u_data_size - hdr_size;
524 if (hdr_size + y_data_size + u_data_size + v_data_size > slice_data_size ||
525 v_data_size < 0 || hdr_size < 6) {
530 sf = av_clip(buf[1], 1, 224);
531 sf = sf > 128 ? (sf - 96) << 2 : sf;
537 for (i = 0; i < 64; i++) {
545 (uint16_t*) (y_data + (mb_y_pos << 4) * y_linesize +
546 (mb_x_pos << 5)), y_linesize,
547 mbs_per_slice, 4, slice_width_factor + 2,
552 (uint16_t*) (u_data + (mb_y_pos << 4) * u_linesize +
561 (uint16_t*) (v_data + (mb_y_pos << 4) * v_linesize +
574 int slice_num, slice_width, x_pos, y_pos;
579 for (y_pos = 0; y_pos < ctx->
num_y_mbs; y_pos++) {
582 for (x_pos = 0; x_pos < ctx->
num_x_mbs && slice_width;
583 x_pos += slice_width) {
584 while (ctx->
num_x_mbs - x_pos < slice_width)
602 #define MOVE_DATA_PTR(nbytes) buf += (nbytes); buf_size -= (nbytes)
610 int buf_size = avpkt->
size;
611 int frame_hdr_size, pic_num, pic_data_size;
614 if (buf_size < 28 || buf_size <
AV_RB32(buf) ||
623 if (frame_hdr_size < 0)
628 if (picture->
data[0])
637 if (pic_data_size < 0)