diff options
Diffstat (limited to 'src/mapping_matrix.c')
| -rw-r--r-- | src/mapping_matrix.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/mapping_matrix.c b/src/mapping_matrix.c index d3d59d61..11a14ce1 100644 --- a/src/mapping_matrix.c +++ b/src/mapping_matrix.c @@ -39,9 +39,21 @@ #define MATRIX_INDEX(nb_rows, row, col) (nb_rows * col + row) -int mapping_matrix_get_size(int rows, int cols) +opus_int32 mapping_matrix_get_size(int rows, int cols) { - return align(sizeof(MappingMatrix)) + align(rows * cols * sizeof(opus_int16)); + opus_int32 size; + + /* Mapping Matrix must only support up to 255 channels in or out. + * Additionally, the total cell count must be <= 65004 octets in order + * for the matrix to be stored in an OGG header. + */ + if (rows > 255 || cols > 255) + return 0; + size = rows * (opus_int32)cols * sizeof(opus_int16); + if (size > 65004) + return 0; + + return align(sizeof(MappingMatrix)) + align(size); } opus_int16 *mapping_matrix_get_data(const MappingMatrix *matrix) |