xref: /third_party/ffmpeg/libavcodec/flicvideo.c

157     GetByteContext g2;
187     bytestream2_init(&g2, buf, buf_size);
196     frame_size = bytestream2_get_le32(&g2);
199     bytestream2_skip(&g2, 2); /* skip the magic number */
200     num_chunks = bytestream2_get_le16(&g2);
201     bytestream2_skip(&g2, 8);  /* skip padding */
210             bytestream2_get_bytes_left(&g2) >= 4) {
212         chunk_size = bytestream2_get_le32(&g2);
218         stream_ptr_after_chunk = bytestream2_tell(&g2) - 4 + chunk_size;
220         chunk_type = bytestream2_get_le16(&g2);
234             color_packets = bytestream2_get_le16(&g2);
238                 palette_ptr += bytestream2_get_byte(&g2);
241                 color_changes = bytestream2_get_byte(&g2);
247                 if (bytestream2_tell(&g2) + color_changes * 3 > stream_ptr_after_chunk)
257                     r = bytestream2_get_byte(&g2) << color_shift;
258                     g = bytestream2_get_byte(&g2) << color_shift;
259                     b = bytestream2_get_byte(&g2) << color_shift;
272             compressed_lines = bytestream2_get_le16(&g2);
274                 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
278                 line_packets = sign_extend(bytestream2_get_le16(&g2), 16);
298                         if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
301                         pixel_skip = bytestream2_get_byte(&g2);
304                         byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
307                             palette_idx1 = bytestream2_get_byte(&g2);
308                             palette_idx2 = bytestream2_get_byte(&g2);
316                             if (bytestream2_tell(&g2) + byte_run * 2 > stream_ptr_after_chunk)
319                                 pixels[pixel_ptr++] = bytestream2_get_byte(&g2);
331             starting_line = bytestream2_get_le16(&g2);
337             compressed_lines = bytestream2_get_le16(&g2);
342                 if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
344                 line_packets = bytestream2_get_byte(&g2);
348                         if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
350                         pixel_skip = bytestream2_get_byte(&g2);
353                         byte_run = sign_extend(bytestream2_get_byte(&g2),8);
356                             if (bytestream2_tell(&g2) + byte_run > stream_ptr_after_chunk)
359                                 pixels[pixel_ptr++] = bytestream2_get_byte(&g2);
363                             palette_idx1 = bytestream2_get_byte(&g2);
391                  bytestream2_skip(&g2, 1);
394                     if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
396                     byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
403                         palette_idx1 = bytestream2_get_byte(&g2);
415                         if (bytestream2_tell(&g2) + byte_run > stream_ptr_after_chunk)
418                             pixels[pixel_ptr++] = bytestream2_get_byte(&g2);
436                 bytestream2_skip(&g2, chunk_size - 6);
440                     bytestream2_get_buffer(&g2, &pixels[y_ptr],
443                         bytestream2_skip(&g2, 4 - (s->avctx->width & 3));
457         if (stream_ptr_after_chunk - bytestream2_tell(&g2) >= 0) {
458             bytestream2_skip(&g2, stream_ptr_after_chunk - bytestream2_tell(&g2));
470     if (bytestream2_get_bytes_left(&g2) > 2)
473                buf_size - bytestream2_get_bytes_left(&g2));
498     GetByteContext g2;
521     bytestream2_init(&g2, buf, buf_size);
529     frame_size = bytestream2_get_le32(&g2);
530     bytestream2_skip(&g2, 2);  /* skip the magic number */
531     num_chunks = bytestream2_get_le16(&g2);
532     bytestream2_skip(&g2, 8);  /* skip padding */
542             bytestream2_get_bytes_left(&g2) >= 4) {
544         chunk_size = bytestream2_get_le32(&g2);
550         stream_ptr_after_chunk = bytestream2_tell(&g2) - 4 + chunk_size;
552         chunk_type = bytestream2_get_le16(&g2);
564             bytestream2_skip(&g2, chunk_size - 6);
570             compressed_lines = bytestream2_get_le16(&g2);
572                 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
576                 line_packets = sign_extend(bytestream2_get_le16(&g2), 16);
589                         if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
591                         pixel_skip = bytestream2_get_byte(&g2);
594                         byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
597                             pixel    = bytestream2_get_le16(&g2);
604                             if (bytestream2_tell(&g2) + 2*byte_run > stream_ptr_after_chunk)
608                                 *((signed short*)(&pixels[pixel_ptr])) = bytestream2_get_le16(&g2);
621             bytestream2_skip(&g2, chunk_size - 6);
636                 bytestream2_skip(&g2, 1);
640                     if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
642                     byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
644                         palette_idx1 = bytestream2_get_byte(&g2);
655                         if (bytestream2_tell(&g2) + byte_run > stream_ptr_after_chunk)
659                             palette_idx1 = bytestream2_get_byte(&g2);
692                 bytestream2_skip(&g2, 1);
696                     if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
698                     byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
700                         pixel    = bytestream2_get_le16(&g2);
712                         if (bytestream2_tell(&g2) + 2 * byte_run > stream_ptr_after_chunk)
716                             *((signed short*)(&pixels[pixel_ptr])) = bytestream2_get_le16(&g2);
736                 bytestream2_skip(&g2, chunk_size - 6);
739                 if (bytestream2_get_bytes_left(&g2) < 2 * s->avctx->width * s->avctx->height )
747                       *((signed short*)(&pixels[y_ptr + pixel_ptr])) = bytestream2_get_le16(&g2);
752                         bytestream2_skip(&g2, 2);
759             bytestream2_skip(&g2, chunk_size - 6);
767         if (stream_ptr_after_chunk - bytestream2_tell(&g2) >= 0) {
768             bytestream2_skip(&g2, stream_ptr_after_chunk - bytestream2_tell(&g2));
780     if ((bytestream2_get_bytes_left(&g2) != 0) && (bytestream2_get_bytes_left(&g2) != 1))
782                "and final chunk ptr = %d\n", buf_size, bytestream2_tell(&g2));
798     GetByteContext g2;
821     bytestream2_init(&g2, buf, buf_size);
829     frame_size = bytestream2_get_le32(&g2);
830     bytestream2_skip(&g2, 2);  /* skip the magic number */
831     num_chunks = bytestream2_get_le16(&g2);
832     bytestream2_skip(&g2, 8);  /* skip padding */
842             bytestream2_get_bytes_left(&g2) >= 4) {
844         chunk_size = bytestream2_get_le32(&g2);
850         stream_ptr_after_chunk = bytestream2_tell(&g2) - 4 + chunk_size;
852         chunk_type = bytestream2_get_le16(&g2);
864             bytestream2_skip(&g2, chunk_size - 6);
870             compressed_lines = bytestream2_get_le16(&g2);
872                 if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
876                 line_packets = sign_extend(bytestream2_get_le16(&g2), 16);
889                         if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
891                         pixel_skip = bytestream2_get_byte(&g2);
894                         byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
897                             pixel    = bytestream2_get_le24(&g2);
904                             if (bytestream2_tell(&g2) + 2*byte_run > stream_ptr_after_chunk)
908                                 pixel = bytestream2_get_le24(&g2);
922             bytestream2_skip(&g2, chunk_size - 6);
937                 bytestream2_skip(&g2, 1);
941                     if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
943                     byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
945                         palette_idx1 = bytestream2_get_byte(&g2);
956                         if (bytestream2_tell(&g2) + byte_run > stream_ptr_after_chunk)
960                             palette_idx1 = bytestream2_get_byte(&g2);
980                 bytestream2_skip(&g2, 1);
984                     if (bytestream2_tell(&g2) + 1 > stream_ptr_after_chunk)
986                     byte_run = sign_extend(bytestream2_get_byte(&g2), 8);
988                         pixel = bytestream2_get_le24(&g2);
1000                         if (bytestream2_tell(&g2) + 3 * byte_run > stream_ptr_after_chunk)
1004                             pixel = bytestream2_get_le24(&g2);
1025                 bytestream2_skip(&g2, chunk_size - 6);
1030                     bytestream2_get_buffer(&g2, pixels + y_ptr, 3*s->avctx->width);
1032                         bytestream2_skip(&g2, 3);
1039             bytestream2_skip(&g2, chunk_size - 6);
1047         if (stream_ptr_after_chunk - bytestream2_tell(&g2) >= 0) {
1048             bytestream2_skip(&g2, stream_ptr_after_chunk - bytestream2_tell(&g2));
1060     if ((bytestream2_get_bytes_left(&g2) != 0) && (bytestream2_get_bytes_left(&g2) != 1))
1062                "and final chunk ptr = %d\n", buf_size, bytestream2_tell(&g2));

Indexes created Thu Nov 07 10:32:03 CST 2024