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authorMichael Niedermayer <michaelni@gmx.at>2011-09-12 20:49:20 +0200
committerMichael Niedermayer <michaelni@gmx.at>2011-09-12 21:01:12 +0200
commit9765caec1b9991e676d1b91db0c04a6242b65d7a (patch)
treedcd5a8d04e7c5a61aa12b455424fb4d0d9b2d076 /libavcodec/adpcm_data.c
parentf0c64d0d0b16162a46d7b88d09ac0801a94e59a7 (diff)
parent826c56d16e55f3819a75d01f957dd295aa1e9f3a (diff)
downloadffmpeg-9765caec1b9991e676d1b91db0c04a6242b65d7a.tar.gz
Merge remote-tracking branch 'qatar/master'
* qatar/master: adpcm: split ADPCM encoders and decoders into separate files. doc/avconv: fix typo. rv34: check that subsequent slices have the same type as first one. smacker demuxer: handle possible av_realloc() failure. lavfi: add split filter from soc. lavfi: add showinfo filter libxavs: add private options corresponding to deprecated global options Conflicts: Changelog libavcodec/adpcm.c libavfilter/avfilter.h libavfilter/vf_showinfo.c libavfilter/vf_split.c libavformat/smacker.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/adpcm_data.c')
-rw-r--r--libavcodec/adpcm_data.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/libavcodec/adpcm_data.c b/libavcodec/adpcm_data.c
new file mode 100644
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+++ b/libavcodec/adpcm_data.c
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+/*
+ * Copyright (c) 2001-2003 The ffmpeg Project
+ *
+ * This file is part of FFmpeg.
+ *
+ * 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.
+ *
+ * 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * ADPCM tables
+ */
+
+#include <stdint.h>
+
+/* ff_adpcm_step_table[] and ff_adpcm_index_table[] are from the ADPCM
+ reference source */
+/* This is the index table: */
+const int8_t ff_adpcm_index_table[16] = {
+ -1, -1, -1, -1, 2, 4, 6, 8,
+ -1, -1, -1, -1, 2, 4, 6, 8,
+};
+
+/**
+ * This is the step table. Note that many programs use slight deviations from
+ * this table, but such deviations are negligible:
+ */
+const int16_t ff_adpcm_step_table[89] = {
+ 7, 8, 9, 10, 11, 12, 13, 14, 16, 17,
+ 19, 21, 23, 25, 28, 31, 34, 37, 41, 45,
+ 50, 55, 60, 66, 73, 80, 88, 97, 107, 118,
+ 130, 143, 157, 173, 190, 209, 230, 253, 279, 307,
+ 337, 371, 408, 449, 494, 544, 598, 658, 724, 796,
+ 876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066,
+ 2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358,
+ 5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
+ 15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
+};
+
+/* These are for MS-ADPCM */
+/* ff_adpcm_AdaptationTable[], ff_adpcm_AdaptCoeff1[], and
+ ff_adpcm_AdaptCoeff2[] are from libsndfile */
+const int16_t ff_adpcm_AdaptationTable[] = {
+ 230, 230, 230, 230, 307, 409, 512, 614,
+ 768, 614, 512, 409, 307, 230, 230, 230
+};
+
+/** Divided by 4 to fit in 8-bit integers */
+const uint8_t ff_adpcm_AdaptCoeff1[] = {
+ 64, 128, 0, 48, 60, 115, 98
+};
+
+/** Divided by 4 to fit in 8-bit integers */
+const int8_t ff_adpcm_AdaptCoeff2[] = {
+ 0, -64, 0, 16, 0, -52, -58
+};
+
+const int16_t ff_adpcm_yamaha_indexscale[] = {
+ 230, 230, 230, 230, 307, 409, 512, 614,
+ 230, 230, 230, 230, 307, 409, 512, 614
+};
+
+const int8_t ff_adpcm_yamaha_difflookup[] = {
+ 1, 3, 5, 7, 9, 11, 13, 15,
+ -1, -3, -5, -7, -9, -11, -13, -15
+};