diff options
Diffstat (limited to 'libavcodec/mlp.h')
| -rw-r--r-- | libavcodec/mlp.h | 48 |
1 files changed, 44 insertions, 4 deletions
diff --git a/libavcodec/mlp.h b/libavcodec/mlp.h index 8a1584e112..41a45a30d8 100644 --- a/libavcodec/mlp.h +++ b/libavcodec/mlp.h @@ -2,20 +2,20 @@ * MLP codec common header file * Copyright (c) 2007-2008 Ian Caulfield * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -76,6 +76,9 @@ typedef struct FilterParams { uint8_t shift; ///< Right shift to apply to output of filter. int32_t state[MAX_FIR_ORDER]; + + int coeff_bits; + int coeff_shift; } FilterParams; /** sample data coding information */ @@ -96,6 +99,43 @@ typedef struct ChannelParams { */ extern const uint8_t ff_mlp_huffman_tables[3][18][2]; +typedef struct { + uint8_t channel_occupancy; + uint8_t group1_channels; + uint8_t group2_channels; + uint8_t summary_info; +} ChannelInformation; + +/** Tables defining channel information. + * + * Possible channel arrangements are: + * + * (Group 1) C + * (Group 1) L, R + * (Group 1) Lf, Rf / (Group 2) S + * (Group 1) Lf, Rf / (Group 2) Ls, Rs + * (Group 1) Lf, Rf / (Group 2) LFE + * (Group 1) Lf, Rf / (Group 2) LFE, S + * (Group 1) Lf, Rf / (Group 2) LFE, Ls, Rs + * (Group 1) Lf, Rf / (Group 2) C + * (Group 1) Lf, Rf / (Group 2) C, S + * (Group 1) Lf, Rf / (Group 2) C, Ls, Rs + * (Group 1) Lf, Rf / (Group 2) C, LFE + * (Group 1) Lf, Rf / (Group 2) C, LFE, S + * (Group 1) Lf, Rf / (Group 2) C, LFE, Ls, Rs + * (Group 1) Lf, Rf C / (Group 2) S + * (Group 1) Lf, Rf C / (Group 2) Ls, Rs + * (Group 1) Lf, Rf C / (Group 2) LFE + * (Group 1) Lf, Rf C / (Group 2) LFE, S + * (Group 1) Lf, Rf C / (Group 2) LFE, Ls, Rs + * (Group 1) Lf, Rf Ls Rs / (Group 2) LFE + * (Group 1) Lf, Rf Ls Rs / (Group 2) C + * (Group 1) Lf, Rf, Ls, Rs / (Group 2) C, LFE + */ +extern const ChannelInformation ff_mlp_ch_info[21]; + +extern const uint64_t ff_mlp_channel_layouts[12]; + /** MLP uses checksums that seem to be based on the standard CRC algorithm, but * are not (in implementation terms, the table lookup and XOR are reversed). * We can implement this behavior using a standard av_crc on all but the |