mirror of
https://github.com/librempeg/librempeg
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494 lines
15 KiB
C
494 lines
15 KiB
C
/*
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* RV10 codec
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* Copyright (c) 2000,2001 Gerard Lantau.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "common.h"
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#include "dsputil.h"
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#include "avcodec.h"
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#include "mpegvideo.h"
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//#define DEBUG
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static const UINT16 rv_lum_code[256] =
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{
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0x3e7f, 0x0f00, 0x0f01, 0x0f02, 0x0f03, 0x0f04, 0x0f05, 0x0f06,
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0x0f07, 0x0f08, 0x0f09, 0x0f0a, 0x0f0b, 0x0f0c, 0x0f0d, 0x0f0e,
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0x0f0f, 0x0f10, 0x0f11, 0x0f12, 0x0f13, 0x0f14, 0x0f15, 0x0f16,
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0x0f17, 0x0f18, 0x0f19, 0x0f1a, 0x0f1b, 0x0f1c, 0x0f1d, 0x0f1e,
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0x0f1f, 0x0f20, 0x0f21, 0x0f22, 0x0f23, 0x0f24, 0x0f25, 0x0f26,
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0x0f27, 0x0f28, 0x0f29, 0x0f2a, 0x0f2b, 0x0f2c, 0x0f2d, 0x0f2e,
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0x0f2f, 0x0f30, 0x0f31, 0x0f32, 0x0f33, 0x0f34, 0x0f35, 0x0f36,
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0x0f37, 0x0f38, 0x0f39, 0x0f3a, 0x0f3b, 0x0f3c, 0x0f3d, 0x0f3e,
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0x0f3f, 0x0380, 0x0381, 0x0382, 0x0383, 0x0384, 0x0385, 0x0386,
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0x0387, 0x0388, 0x0389, 0x038a, 0x038b, 0x038c, 0x038d, 0x038e,
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0x038f, 0x0390, 0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396,
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0x0397, 0x0398, 0x0399, 0x039a, 0x039b, 0x039c, 0x039d, 0x039e,
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0x039f, 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6,
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0x00c7, 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce,
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0x00cf, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056,
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0x0057, 0x0020, 0x0021, 0x0022, 0x0023, 0x000c, 0x000d, 0x0004,
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0x0000, 0x0005, 0x000e, 0x000f, 0x0024, 0x0025, 0x0026, 0x0027,
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0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f,
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0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7,
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0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df,
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0x03a0, 0x03a1, 0x03a2, 0x03a3, 0x03a4, 0x03a5, 0x03a6, 0x03a7,
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0x03a8, 0x03a9, 0x03aa, 0x03ab, 0x03ac, 0x03ad, 0x03ae, 0x03af,
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0x03b0, 0x03b1, 0x03b2, 0x03b3, 0x03b4, 0x03b5, 0x03b6, 0x03b7,
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0x03b8, 0x03b9, 0x03ba, 0x03bb, 0x03bc, 0x03bd, 0x03be, 0x03bf,
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0x0f40, 0x0f41, 0x0f42, 0x0f43, 0x0f44, 0x0f45, 0x0f46, 0x0f47,
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0x0f48, 0x0f49, 0x0f4a, 0x0f4b, 0x0f4c, 0x0f4d, 0x0f4e, 0x0f4f,
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0x0f50, 0x0f51, 0x0f52, 0x0f53, 0x0f54, 0x0f55, 0x0f56, 0x0f57,
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0x0f58, 0x0f59, 0x0f5a, 0x0f5b, 0x0f5c, 0x0f5d, 0x0f5e, 0x0f5f,
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0x0f60, 0x0f61, 0x0f62, 0x0f63, 0x0f64, 0x0f65, 0x0f66, 0x0f67,
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0x0f68, 0x0f69, 0x0f6a, 0x0f6b, 0x0f6c, 0x0f6d, 0x0f6e, 0x0f6f,
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0x0f70, 0x0f71, 0x0f72, 0x0f73, 0x0f74, 0x0f75, 0x0f76, 0x0f77,
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0x0f78, 0x0f79, 0x0f7a, 0x0f7b, 0x0f7c, 0x0f7d, 0x0f7e, 0x0f7f,
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};
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static const UINT8 rv_lum_bits[256] =
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{
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14, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 10, 10, 10, 10, 10, 10, 10,
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10, 10, 10, 10, 10, 10, 10, 10,
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10, 10, 10, 10, 10, 10, 10, 10,
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10, 10, 10, 10, 10, 10, 10, 10,
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10, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8,
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8, 7, 7, 7, 7, 7, 7, 7,
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7, 6, 6, 6, 6, 5, 5, 4,
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2, 4, 5, 5, 6, 6, 6, 6,
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7, 7, 7, 7, 7, 7, 7, 7,
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8, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8,
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10, 10, 10, 10, 10, 10, 10, 10,
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10, 10, 10, 10, 10, 10, 10, 10,
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10, 10, 10, 10, 10, 10, 10, 10,
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10, 10, 10, 10, 10, 10, 10, 10,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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};
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static const UINT16 rv_chrom_code[256] =
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{
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0xfe7f, 0x3f00, 0x3f01, 0x3f02, 0x3f03, 0x3f04, 0x3f05, 0x3f06,
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0x3f07, 0x3f08, 0x3f09, 0x3f0a, 0x3f0b, 0x3f0c, 0x3f0d, 0x3f0e,
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0x3f0f, 0x3f10, 0x3f11, 0x3f12, 0x3f13, 0x3f14, 0x3f15, 0x3f16,
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0x3f17, 0x3f18, 0x3f19, 0x3f1a, 0x3f1b, 0x3f1c, 0x3f1d, 0x3f1e,
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0x3f1f, 0x3f20, 0x3f21, 0x3f22, 0x3f23, 0x3f24, 0x3f25, 0x3f26,
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0x3f27, 0x3f28, 0x3f29, 0x3f2a, 0x3f2b, 0x3f2c, 0x3f2d, 0x3f2e,
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0x3f2f, 0x3f30, 0x3f31, 0x3f32, 0x3f33, 0x3f34, 0x3f35, 0x3f36,
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0x3f37, 0x3f38, 0x3f39, 0x3f3a, 0x3f3b, 0x3f3c, 0x3f3d, 0x3f3e,
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0x3f3f, 0x0f80, 0x0f81, 0x0f82, 0x0f83, 0x0f84, 0x0f85, 0x0f86,
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0x0f87, 0x0f88, 0x0f89, 0x0f8a, 0x0f8b, 0x0f8c, 0x0f8d, 0x0f8e,
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0x0f8f, 0x0f90, 0x0f91, 0x0f92, 0x0f93, 0x0f94, 0x0f95, 0x0f96,
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0x0f97, 0x0f98, 0x0f99, 0x0f9a, 0x0f9b, 0x0f9c, 0x0f9d, 0x0f9e,
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0x0f9f, 0x03c0, 0x03c1, 0x03c2, 0x03c3, 0x03c4, 0x03c5, 0x03c6,
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0x03c7, 0x03c8, 0x03c9, 0x03ca, 0x03cb, 0x03cc, 0x03cd, 0x03ce,
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0x03cf, 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6,
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0x00e7, 0x0030, 0x0031, 0x0032, 0x0033, 0x0008, 0x0009, 0x0002,
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0x0000, 0x0003, 0x000a, 0x000b, 0x0034, 0x0035, 0x0036, 0x0037,
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0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef,
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0x03d0, 0x03d1, 0x03d2, 0x03d3, 0x03d4, 0x03d5, 0x03d6, 0x03d7,
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0x03d8, 0x03d9, 0x03da, 0x03db, 0x03dc, 0x03dd, 0x03de, 0x03df,
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0x0fa0, 0x0fa1, 0x0fa2, 0x0fa3, 0x0fa4, 0x0fa5, 0x0fa6, 0x0fa7,
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0x0fa8, 0x0fa9, 0x0faa, 0x0fab, 0x0fac, 0x0fad, 0x0fae, 0x0faf,
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0x0fb0, 0x0fb1, 0x0fb2, 0x0fb3, 0x0fb4, 0x0fb5, 0x0fb6, 0x0fb7,
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0x0fb8, 0x0fb9, 0x0fba, 0x0fbb, 0x0fbc, 0x0fbd, 0x0fbe, 0x0fbf,
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0x3f40, 0x3f41, 0x3f42, 0x3f43, 0x3f44, 0x3f45, 0x3f46, 0x3f47,
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0x3f48, 0x3f49, 0x3f4a, 0x3f4b, 0x3f4c, 0x3f4d, 0x3f4e, 0x3f4f,
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0x3f50, 0x3f51, 0x3f52, 0x3f53, 0x3f54, 0x3f55, 0x3f56, 0x3f57,
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0x3f58, 0x3f59, 0x3f5a, 0x3f5b, 0x3f5c, 0x3f5d, 0x3f5e, 0x3f5f,
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0x3f60, 0x3f61, 0x3f62, 0x3f63, 0x3f64, 0x3f65, 0x3f66, 0x3f67,
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0x3f68, 0x3f69, 0x3f6a, 0x3f6b, 0x3f6c, 0x3f6d, 0x3f6e, 0x3f6f,
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0x3f70, 0x3f71, 0x3f72, 0x3f73, 0x3f74, 0x3f75, 0x3f76, 0x3f77,
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0x3f78, 0x3f79, 0x3f7a, 0x3f7b, 0x3f7c, 0x3f7d, 0x3f7e, 0x3f7f,
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};
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static const UINT8 rv_chrom_bits[256] =
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{
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16, 14, 14, 14, 14, 14, 14, 14,
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14, 14, 14, 14, 14, 14, 14, 14,
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14, 14, 14, 14, 14, 14, 14, 14,
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14, 14, 14, 14, 14, 14, 14, 14,
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14, 14, 14, 14, 14, 14, 14, 14,
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14, 14, 14, 14, 14, 14, 14, 14,
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14, 14, 14, 14, 14, 14, 14, 14,
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14, 14, 14, 14, 14, 14, 14, 14,
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14, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 10, 10, 10, 10, 10, 10, 10,
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10, 10, 10, 10, 10, 10, 10, 10,
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10, 8, 8, 8, 8, 8, 8, 8,
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8, 6, 6, 6, 6, 4, 4, 3,
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2, 3, 4, 4, 6, 6, 6, 6,
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8, 8, 8, 8, 8, 8, 8, 8,
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10, 10, 10, 10, 10, 10, 10, 10,
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10, 10, 10, 10, 10, 10, 10, 10,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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12, 12, 12, 12, 12, 12, 12, 12,
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14, 14, 14, 14, 14, 14, 14, 14,
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14, 14, 14, 14, 14, 14, 14, 14,
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14, 14, 14, 14, 14, 14, 14, 14,
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14, 14, 14, 14, 14, 14, 14, 14,
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14, 14, 14, 14, 14, 14, 14, 14,
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14, 14, 14, 14, 14, 14, 14, 14,
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14, 14, 14, 14, 14, 14, 14, 14,
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14, 14, 14, 14, 14, 14, 14, 14,
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};
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static VLC rv_dc_lum, rv_dc_chrom;
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int rv_decode_dc(MpegEncContext *s, int n)
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{
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int code;
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if (n < 4) {
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code = get_vlc(&s->gb, &rv_dc_lum);
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if (code < 0) {
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/* XXX: I don't understand why they use LONGER codes than
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necessary. The following code would be completely useless
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if they had thought about it !!! */
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code = get_bits(&s->gb, 7);
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if (code == 0x7c) {
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code = (INT8)(get_bits(&s->gb, 7) + 1);
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} else if (code == 0x7d) {
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code = -128 + get_bits(&s->gb, 7);
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} else if (code == 0x7e) {
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if (get_bits(&s->gb, 1) == 0)
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code = (INT8)(get_bits(&s->gb, 8) + 1);
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else
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code = (INT8)(get_bits(&s->gb, 8));
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} else if (code == 0x7f) {
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get_bits(&s->gb, 11);
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code = 1;
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}
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} else {
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code -= 128;
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}
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} else {
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code = get_vlc(&s->gb, &rv_dc_chrom);
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/* same remark */
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if (code < 0) {
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code = get_bits(&s->gb, 9);
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if (code == 0x1fc) {
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code = (INT8)(get_bits(&s->gb, 7) + 1);
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} else if (code == 0x1fd) {
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code = -128 + get_bits(&s->gb, 7);
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} else if (code == 0x1fe) {
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get_bits(&s->gb, 9);
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code = 1;
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} else {
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return 0xffff;
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}
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} else {
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code -= 128;
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}
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}
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return -code;
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}
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/* write RV 1.0 compatible frame header */
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void rv10_encode_picture_header(MpegEncContext *s, int picture_number)
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{
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align_put_bits(&s->pb);
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put_bits(&s->pb, 1, 1); /* marker */
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put_bits(&s->pb, 1, (s->pict_type == P_TYPE));
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put_bits(&s->pb, 1, 0); /* not PB frame */
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put_bits(&s->pb, 5, s->qscale);
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if (s->pict_type == I_TYPE) {
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/* specific MPEG like DC coding not used */
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}
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/* if multiple packets per frame are sent, the position at which
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to display the macro blocks is coded here */
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put_bits(&s->pb, 6, 0); /* mb_x */
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put_bits(&s->pb, 6, 0); /* mb_y */
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put_bits(&s->pb, 12, s->mb_width * s->mb_height);
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put_bits(&s->pb, 3, 0); /* ignored */
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}
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static int get_num(GetBitContext *gb)
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{
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int n, n1;
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n = get_bits(gb, 16);
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if (n >= 0x4000) {
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return n - 0x4000;
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} else {
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n1 = get_bits(gb, 16);
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return (n << 16) | n1;
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}
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}
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/* read RV 1.0 compatible frame header */
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static int rv10_decode_picture_header(MpegEncContext *s)
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{
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int mb_count, pb_frame, marker, h, full_frame;
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/* skip packet header */
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h = get_bits(&s->gb, 8);
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if ((h & 0xc0) == 0xc0) {
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int len, pos;
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full_frame = 1;
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len = get_num(&s->gb);
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pos = get_num(&s->gb);
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} else {
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int seq, frame_size, pos;
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full_frame = 0;
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seq = get_bits(&s->gb, 8);
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frame_size = get_num(&s->gb);
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pos = get_num(&s->gb);
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}
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/* picture number */
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get_bits(&s->gb, 8);
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marker = get_bits(&s->gb, 1);
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if (get_bits(&s->gb, 1))
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s->pict_type = P_TYPE;
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else
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s->pict_type = I_TYPE;
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pb_frame = get_bits(&s->gb, 1);
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#ifdef DEBUG
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printf("pict_type=%d pb_frame=%d\n", s->pict_type, pb_frame);
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#endif
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if (pb_frame)
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return -1;
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s->qscale = get_bits(&s->gb, 5);
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if (s->pict_type == I_TYPE) {
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if (s->rv10_version == 3) {
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/* specific MPEG like DC coding not used */
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s->last_dc[0] = get_bits(&s->gb, 8);
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s->last_dc[1] = get_bits(&s->gb, 8);
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s->last_dc[2] = get_bits(&s->gb, 8);
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#ifdef DEBUG
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printf("DC:%d %d %d\n",
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s->last_dc[0],
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s->last_dc[1],
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s->last_dc[2]);
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#endif
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}
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}
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/* if multiple packets per frame are sent, the position at which
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to display the macro blocks is coded here */
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if (!full_frame) {
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s->mb_x = get_bits(&s->gb, 6); /* mb_x */
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s->mb_y = get_bits(&s->gb, 6); /* mb_y */
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mb_count = get_bits(&s->gb, 12);
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} else {
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s->mb_x = 0;
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s->mb_y = 0;
|
|
mb_count = s->mb_width * s->mb_height;
|
|
}
|
|
|
|
get_bits(&s->gb, 3); /* ignored */
|
|
s->f_code = 1;
|
|
s->unrestricted_mv = 1;
|
|
#if 0
|
|
s->h263_long_vectors = 1;
|
|
#endif
|
|
return mb_count;
|
|
}
|
|
|
|
static int rv10_decode_init(AVCodecContext *avctx)
|
|
{
|
|
MpegEncContext *s = avctx->priv_data;
|
|
int i;
|
|
static int done;
|
|
|
|
s->out_format = FMT_H263;
|
|
|
|
s->width = avctx->width;
|
|
s->height = avctx->height;
|
|
|
|
s->h263_rv10 = 1;
|
|
s->rv10_version = avctx->sub_id;
|
|
|
|
if (MPV_common_init(s) < 0)
|
|
return -1;
|
|
|
|
/* XXX: suppress this matrix init, only needed because using mpeg1
|
|
dequantize in mmx case */
|
|
for(i=0;i<64;i++)
|
|
s->non_intra_matrix[i] = default_non_intra_matrix[i];
|
|
|
|
h263_decode_init_vlc(s);
|
|
|
|
/* init rv vlc */
|
|
if (!done) {
|
|
init_vlc(&rv_dc_lum, 9, 256,
|
|
rv_lum_bits, 1, 1,
|
|
rv_lum_code, 2, 2);
|
|
init_vlc(&rv_dc_chrom, 9, 256,
|
|
rv_chrom_bits, 1, 1,
|
|
rv_chrom_code, 2, 2);
|
|
done = 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rv10_decode_end(AVCodecContext *avctx)
|
|
{
|
|
MpegEncContext *s = avctx->priv_data;
|
|
|
|
MPV_common_end(s);
|
|
return 0;
|
|
}
|
|
|
|
static int rv10_decode_frame(AVCodecContext *avctx,
|
|
void *data, int *data_size,
|
|
UINT8 *buf, int buf_size)
|
|
{
|
|
MpegEncContext *s = avctx->priv_data;
|
|
int i, mb_count, mb_pos, left;
|
|
DCTELEM block[6][64];
|
|
AVPicture *pict = data;
|
|
|
|
#ifdef DEBUG
|
|
printf("*****frame %d size=%d\n", avctx->frame_number, buf_size);
|
|
#endif
|
|
|
|
/* no supplementary picture */
|
|
if (buf_size == 0) {
|
|
*data_size = 0;
|
|
return 0;
|
|
}
|
|
|
|
init_get_bits(&s->gb, buf, buf_size);
|
|
|
|
mb_count = rv10_decode_picture_header(s);
|
|
if (mb_count < 0) {
|
|
#ifdef DEBUG
|
|
printf("HEADER ERROR\n");
|
|
#endif
|
|
return -1;
|
|
}
|
|
|
|
if (s->mb_x >= s->mb_width ||
|
|
s->mb_y >= s->mb_height) {
|
|
#ifdef DEBUG
|
|
printf("POS ERROR %d %d\n", s->mb_x, s->mb_y);
|
|
#endif
|
|
return -1;
|
|
}
|
|
mb_pos = s->mb_y * s->mb_width + s->mb_x;
|
|
left = s->mb_width * s->mb_height - mb_pos;
|
|
if (mb_count > left) {
|
|
#ifdef DEBUG
|
|
printf("COUNT ERROR\n");
|
|
#endif
|
|
return -1;
|
|
}
|
|
|
|
if (s->mb_x == 0 && s->mb_y == 0) {
|
|
MPV_frame_start(s);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
printf("qscale=%d\n", s->qscale);
|
|
#endif
|
|
|
|
/* default quantization values */
|
|
s->y_dc_scale = 8;
|
|
s->c_dc_scale = 8;
|
|
s->rv10_first_dc_coded[0] = 0;
|
|
s->rv10_first_dc_coded[1] = 0;
|
|
s->rv10_first_dc_coded[2] = 0;
|
|
|
|
/* decode each macroblock */
|
|
for(i=0;i<mb_count;i++) {
|
|
#ifdef DEBUG
|
|
printf("**mb x=%d y=%d\n", s->mb_x, s->mb_y);
|
|
#endif
|
|
|
|
memset(block, 0, sizeof(block));
|
|
s->mv_dir = MV_DIR_FORWARD;
|
|
s->mv_type = MV_TYPE_16X16;
|
|
if (h263_decode_mb(s, block) < 0) {
|
|
#ifdef DEBUG
|
|
printf("ERROR\n");
|
|
#endif
|
|
return -1;
|
|
}
|
|
MPV_decode_mb(s, block);
|
|
if (++s->mb_x == s->mb_width) {
|
|
s->mb_x = 0;
|
|
s->mb_y++;
|
|
}
|
|
}
|
|
|
|
if (s->mb_x == 0 &&
|
|
s->mb_y == s->mb_height) {
|
|
MPV_frame_end(s);
|
|
|
|
pict->data[0] = s->current_picture[0];
|
|
pict->data[1] = s->current_picture[1];
|
|
pict->data[2] = s->current_picture[2];
|
|
pict->linesize[0] = s->linesize;
|
|
pict->linesize[1] = s->linesize / 2;
|
|
pict->linesize[2] = s->linesize / 2;
|
|
|
|
avctx->quality = s->qscale;
|
|
*data_size = sizeof(AVPicture);
|
|
} else {
|
|
*data_size = 0;
|
|
}
|
|
return buf_size;
|
|
}
|
|
|
|
AVCodec rv10_decoder = {
|
|
"rv10",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_RV10,
|
|
sizeof(MpegEncContext),
|
|
rv10_decode_init,
|
|
NULL,
|
|
rv10_decode_end,
|
|
rv10_decode_frame,
|
|
};
|