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Side by Side Diff: patched-ffmpeg-mt/libavcodec/nellymoserenc.c

Issue 789004: ffmpeg roll of source to mar 9 version... (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/ffmpeg/
Patch Set: '' Created 10 years, 9 months ago
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1 /* 1 /*
2 * Nellymoser encoder 2 * Nellymoser encoder
3 * This code is developed as part of Google Summer of Code 2008 Program. 3 * This code is developed as part of Google Summer of Code 2008 Program.
4 * 4 *
5 * Copyright (c) 2008 Bartlomiej Wolowiec 5 * Copyright (c) 2008 Bartlomiej Wolowiec
6 * 6 *
7 * This file is part of FFmpeg. 7 * This file is part of FFmpeg.
8 * 8 *
9 * FFmpeg is free software; you can redistribute it and/or 9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public 10 * modify it under the terms of the GNU Lesser General Public
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31 * Some information also from: http://samples.mplayerhq.hu/A-codecs/Nelly_Moser/ ASAO/ASAO.zip 31 * Some information also from: http://samples.mplayerhq.hu/A-codecs/Nelly_Moser/ ASAO/ASAO.zip
32 * (Copyright Joseph Artsimovich and UAB "DKD") 32 * (Copyright Joseph Artsimovich and UAB "DKD")
33 * 33 *
34 * for more information about nellymoser format, visit: 34 * for more information about nellymoser format, visit:
35 * http://wiki.multimedia.cx/index.php?title=Nellymoser 35 * http://wiki.multimedia.cx/index.php?title=Nellymoser
36 */ 36 */
37 37
38 #include "nellymoser.h" 38 #include "nellymoser.h"
39 #include "avcodec.h" 39 #include "avcodec.h"
40 #include "dsputil.h" 40 #include "dsputil.h"
41 #include "fft.h"
41 42
42 #define BITSTREAM_WRITER_LE 43 #define BITSTREAM_WRITER_LE
43 #include "put_bits.h" 44 #include "put_bits.h"
44 45
45 #define POW_TABLE_SIZE (1<<11) 46 #define POW_TABLE_SIZE (1<<11)
46 #define POW_TABLE_OFFSET 3 47 #define POW_TABLE_OFFSET 3
47 #define OPT_SIZE ((1<<15) + 3000) 48 #define OPT_SIZE ((1<<15) + 3000)
48 49
49 typedef struct NellyMoserEncodeContext { 50 typedef struct NellyMoserEncodeContext {
50 AVCodecContext *avctx; 51 AVCodecContext *avctx;
51 int last_frame; 52 int last_frame;
52 int bufsel; 53 int bufsel;
53 int have_saved; 54 int have_saved;
54 DSPContext dsp; 55 DSPContext dsp;
55 FFTContext mdct_ctx; 56 FFTContext mdct_ctx;
56 DECLARE_ALIGNED_16(float, mdct_out)[NELLY_SAMPLES]; 57 DECLARE_ALIGNED(16, float, mdct_out)[NELLY_SAMPLES];
57 DECLARE_ALIGNED_16(float, in_buff)[NELLY_SAMPLES]; 58 DECLARE_ALIGNED(16, float, in_buff)[NELLY_SAMPLES];
58 DECLARE_ALIGNED_16(float, buf)[2][3 * NELLY_BUF_LEN]; ///< sample buffer 59 DECLARE_ALIGNED(16, float, buf)[2][3 * NELLY_BUF_LEN]; ///< sample buffe r
59 float (*opt )[NELLY_BANDS]; 60 float (*opt )[NELLY_BANDS];
60 uint8_t (*path)[NELLY_BANDS]; 61 uint8_t (*path)[NELLY_BANDS];
61 } NellyMoserEncodeContext; 62 } NellyMoserEncodeContext;
62 63
63 static float pow_table[POW_TABLE_SIZE]; ///< -pow(2, -i / 2048.0 - 3.0); 64 static float pow_table[POW_TABLE_SIZE]; ///< -pow(2, -i / 2048.0 - 3.0);
64 65
65 static const uint8_t sf_lut[96] = { 66 static const uint8_t sf_lut[96] = {
66 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 4, 4, 67 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 4, 4,
67 5, 5, 5, 6, 7, 7, 8, 8, 9, 10, 11, 11, 12, 13, 13, 14, 68 5, 5, 5, 6, 7, 7, 8, 8, 9, 10, 11, 11, 12, 13, 13, 14,
68 15, 15, 16, 17, 17, 18, 19, 19, 20, 21, 22, 22, 23, 24, 25, 26, 69 15, 15, 16, 17, 17, 18, 19, 19, 20, 21, 22, 22, 23, 24, 25, 26,
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385 .name = "nellymoser", 386 .name = "nellymoser",
386 .type = CODEC_TYPE_AUDIO, 387 .type = CODEC_TYPE_AUDIO,
387 .id = CODEC_ID_NELLYMOSER, 388 .id = CODEC_ID_NELLYMOSER,
388 .priv_data_size = sizeof(NellyMoserEncodeContext), 389 .priv_data_size = sizeof(NellyMoserEncodeContext),
389 .init = encode_init, 390 .init = encode_init,
390 .encode = encode_frame, 391 .encode = encode_frame,
391 .close = encode_end, 392 .close = encode_end,
392 .capabilities = CODEC_CAP_SMALL_LAST_FRAME | CODEC_CAP_DELAY, 393 .capabilities = CODEC_CAP_SMALL_LAST_FRAME | CODEC_CAP_DELAY,
393 .long_name = NULL_IF_CONFIG_SMALL("Nellymoser Asao"), 394 .long_name = NULL_IF_CONFIG_SMALL("Nellymoser Asao"),
394 }; 395 };
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