sp5x.h

ffmpeg源码分析

/*
 * Sunplus JPEG tables
 * Copyright (c) 2003 the ffmpeg project
 *
 * This library 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 of the License, or (at your option) any later version.
 *
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef SP5X_H
#define SP5X_H

static const uint8_t sp5x_data_sof[] =
{
    0xFF, 0xC0,       /* SOF */
    0x00, 0x11,       /* len */
    0x08,             /* bits */
    0x00, 0xf0,       /* height (default: 240) */
    0x01, 0x40,       /* width (default: 240) */
    0x03,             /* nb components */
    0x01, 0x22, 0x00, /* 21 vs 22 ? */
    0x02, 0x11, 0x01,
    0x03, 0x11, 0x01
};

static const uint8_t sp5x_data_sos[] =
{
    0xFF, 0xDA,       /* SOS */
    0x00, 0x0C,       /* len */
    0x03,             /* nb components */
    0x01, 0x00,
    0x02, 0x11,
    0x03, 0x11,
    0x00,             /* Ss */
    0x3F,             /* Se */
    0x00              /* Ah/Al */
};

static const uint8_t sp5x_data_dqt[] =
{
    0xFF, 0xDB, /* DQT */
    0x00, 0x84, /* len */
    0x00,
    0x05, 0x03, 0x04, 0x04, 0x04, 0x03, 0x05, 0x04,
    0x04, 0x04, 0x06, 0x05, 0x05, 0x06, 0x08, 0x0D,
    0x08, 0x08, 0x07, 0x07, 0x08, 0x10, 0x0C, 0x0C,
    0x0A, 0x0D, 0x14, 0x11, 0x15, 0x14, 0x13, 0x11,
    0x13, 0x13, 0x16, 0x18, 0x1F, 0x1A, 0x16, 0x17,
    0x1E, 0x17, 0x13, 0x13, 0x1B, 0x25, 0x1C, 0x1E,
    0x20, 0x21, 0x23, 0x23, 0x23, 0x15, 0x1A, 0x27,
    0x29, 0x26, 0x22, 0x29, 0x1F, 0x22, 0x23, 0x22,
    0x01,
    0x05, 0x06, 0x06, 0x08, 0x07, 0x08, 0x10, 0x08,
    0x08, 0x10, 0x22, 0x16, 0x13, 0x16, 0x22, 0x22,
    0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
    0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
    0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
    0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
    0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
    0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22
};

static const uint8_t sp5x_data_dht[] = {
    0xFF, 0xC4, /* DHT */
    0x01, 0xA2, /* len */
    0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01,
    0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
    0x07, 0x08, 0x09, 0x0A, 0x0B, 0x01, 0x00, 0x03,
    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
    0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
    0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
    0x0A, 0x0B, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03,
    0x02, 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00,
    0x00, 0x01, 0x7D, 0x01, 0x02, 0x03, 0x00, 0x04,
    0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13,
    0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81,
    0x91, 0xA1, 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15,
    0x52, 0xD1, 0xF0, 0x24, 0x33, 0x62, 0x72, 0x82,
    0x09, 0x0A, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x25,
    0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36,
    0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, 0x45, 0x46,
    0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56,
    0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66,
    0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76,
    0x77, 0x78, 0x79, 0x7A, 0x83, 0x84, 0x85, 0x86,
    0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95,
    0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4,
    0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3,
    0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2,
    0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA,
    0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
    0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
    0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5,
    0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0x11, 0x00, 0x02,
    0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05,
    0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01,
    0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06,
    0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, 0x22,
    0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1,
    0xC1, 0x09, 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62,
    0x72, 0xD1, 0x0A, 0x16, 0x24, 0x34, 0xE1, 0x25,
    0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, 0x28,
    0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A,
    0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A,
    0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A,
    0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A,
    0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A,
    0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
    0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
    0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7,
    0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
    0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5,
    0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4,
    0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3,
    0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF2,
    0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA
};


static const uint8_t sp5x_quant_table[20][64]=
{
    /* index 0, Q50 */
    {  16, 11, 12, 14, 12, 10, 16, 14, 13, 14, 18, 17, 16, 19, 24, 40,
       26, 24, 22, 22, 24, 49, 35, 37, 29, 40, 58, 51, 61, 60, 57, 51,
       56, 55, 64, 72, 92, 78, 64, 68, 87, 69, 55, 56, 80,109, 81, 87,
       95, 98,103,104,103, 62, 77,113,121,112,100,120, 92,101,103, 99 },
    {  17, 18, 18, 24, 21, 24, 47, 26, 26, 47, 99, 66, 56, 66, 99, 99,
       99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
       99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
       99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99 },

    /* index 1, Q70 */
    {  10,  7,  7,  8,  7,  6, 10,  8,  8,  8, 11, 10, 10, 11, 14, 24,
       16, 14, 13, 13, 14, 29, 21, 22, 17, 24, 35, 31, 37, 36, 34, 31,
       34, 33, 38, 43, 55, 47, 38, 41, 52, 41, 33, 34, 48, 65, 49, 52,
       57, 59, 62, 62, 62, 37, 46, 68, 73, 67, 60, 72, 55, 61, 62, 59 },
    {  10, 11, 11, 14, 13, 14, 28, 16, 16, 28, 59, 40, 34, 40, 59, 59,
       59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
       59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
       59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59 },

    /* index 2, Q80 */
    {   6,  4,  5,  6,  5,  4,  6,  6,  5,  6,  7,  7,  6,  8, 10, 16,
       10, 10,  9,  9, 10, 20, 14, 15, 12, 16, 23, 20, 24, 24, 23, 20,
       22, 22, 26, 29, 37, 31, 26, 27, 35, 28, 22, 22, 32, 44, 32, 35,
       38, 39, 41, 42, 41, 25, 31, 45, 48, 45, 40, 48, 37, 40, 41, 40 },
    {   7,  7,  7, 10,  8, 10, 19, 10, 10, 19, 40, 26, 22, 26, 40, 40,
       40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
       40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
       40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40 },

    /* index 3, Q85 */
    {   5,  3,  4,  4,  4,  3,  5,  4,  4,  4,  5,  5,  5,  6,  7, 12,
        8,  7,  7,  7,  7, 15, 11, 11,  9, 12, 17, 15, 18, 18, 17, 15,
       17, 17, 19, 22, 28, 23, 19, 20, 26, 21, 17, 17, 24, 33, 24, 26,