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https://git.ffmpeg.org/ffmpeg.git
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1409 lines
42 KiB
C
1409 lines
42 KiB
C
/*
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*
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* Copyright (C) 2002 the xine project
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* Copyright (C) 2002 the ffmpeg project
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* (SVQ1 Decoder)
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* Ported to mplayer by Arpi <arpi@thot.banki.hu>
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* Ported to libavcodec by Nick Kurshev <nickols_k@mail.ru>
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*
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* SVQ1 Encoder (c) 2004 Mike Melanson <melanson@pcisys.net>
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*/
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/**
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* @file svq1.c
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* Sorenson Vector Quantizer #1 (SVQ1) video codec.
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* For more information of the SVQ1 algorithm, visit:
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* http://www.pcisys.net/~melanson/codecs/
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*/
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//#define DEBUG_SVQ1
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <limits.h>
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#include "common.h"
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#include "avcodec.h"
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#include "dsputil.h"
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#include "mpegvideo.h"
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#include "bswap.h"
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#undef NDEBUG
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#include <assert.h>
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extern const uint8_t mvtab[33][2];
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static VLC svq1_block_type;
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static VLC svq1_motion_component;
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static VLC svq1_intra_multistage[6];
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static VLC svq1_inter_multistage[6];
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static VLC svq1_intra_mean;
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static VLC svq1_inter_mean;
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#define SVQ1_BLOCK_SKIP 0
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#define SVQ1_BLOCK_INTER 1
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#define SVQ1_BLOCK_INTER_4V 2
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#define SVQ1_BLOCK_INTRA 3
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typedef struct SVQ1Context {
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MpegEncContext m; // needed for motion estimation, should not be used for anything else, the idea is to make the motion estimation eventually independant of MpegEncContext, so this will be removed then (FIXME/XXX)
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AVCodecContext *avctx;
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DSPContext dsp;
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AVFrame picture;
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AVFrame current_picture;
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AVFrame last_picture;
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PutBitContext pb;
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GetBitContext gb;
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PutBitContext reorder_pb[6]; //why ooh why this sick breadth first order, everything is slower and more complex
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int frame_width;
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int frame_height;
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/* Y plane block dimensions */
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int y_block_width;
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int y_block_height;
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/* U & V plane (C planes) block dimensions */
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int c_block_width;
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int c_block_height;
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uint16_t *mb_type;
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uint32_t *dummy;
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int16_t (*motion_val8[3])[2];
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int16_t (*motion_val16[3])[2];
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int64_t rd_total;
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} SVQ1Context;
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/* motion vector (prediction) */
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typedef struct svq1_pmv_s {
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int x;
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int y;
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} svq1_pmv_t;
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#include "svq1_cb.h"
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#include "svq1_vlc.h"
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static const uint16_t checksum_table[256] = {
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0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
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0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
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0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
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0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
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0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
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0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
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0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
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0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
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0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
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0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
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0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
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0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
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0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
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0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
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0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
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0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
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0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
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0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
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0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
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0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
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0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
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0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
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0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
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0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
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0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
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0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
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0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
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0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
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0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
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0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
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0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
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0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
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};
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static const uint8_t string_table[256] = {
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0x00, 0xD5, 0x7F, 0xAA, 0xFE, 0x2B, 0x81, 0x54,
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0x29, 0xFC, 0x56, 0x83, 0xD7, 0x02, 0xA8, 0x7D,
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0x52, 0x87, 0x2D, 0xF8, 0xAC, 0x79, 0xD3, 0x06,
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0x7B, 0xAE, 0x04, 0xD1, 0x85, 0x50, 0xFA, 0x2F,
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0xA4, 0x71, 0xDB, 0x0E, 0x5A, 0x8F, 0x25, 0xF0,
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0x8D, 0x58, 0xF2, 0x27, 0x73, 0xA6, 0x0C, 0xD9,
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0xF6, 0x23, 0x89, 0x5C, 0x08, 0xDD, 0x77, 0xA2,
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0xDF, 0x0A, 0xA0, 0x75, 0x21, 0xF4, 0x5E, 0x8B,
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0x9D, 0x48, 0xE2, 0x37, 0x63, 0xB6, 0x1C, 0xC9,
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0xB4, 0x61, 0xCB, 0x1E, 0x4A, 0x9F, 0x35, 0xE0,
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0xCF, 0x1A, 0xB0, 0x65, 0x31, 0xE4, 0x4E, 0x9B,
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0xE6, 0x33, 0x99, 0x4C, 0x18, 0xCD, 0x67, 0xB2,
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0x39, 0xEC, 0x46, 0x93, 0xC7, 0x12, 0xB8, 0x6D,
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0x10, 0xC5, 0x6F, 0xBA, 0xEE, 0x3B, 0x91, 0x44,
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0x6B, 0xBE, 0x14, 0xC1, 0x95, 0x40, 0xEA, 0x3F,
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0x42, 0x97, 0x3D, 0xE8, 0xBC, 0x69, 0xC3, 0x16,
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0xEF, 0x3A, 0x90, 0x45, 0x11, 0xC4, 0x6E, 0xBB,
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0xC6, 0x13, 0xB9, 0x6C, 0x38, 0xED, 0x47, 0x92,
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0xBD, 0x68, 0xC2, 0x17, 0x43, 0x96, 0x3C, 0xE9,
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0x94, 0x41, 0xEB, 0x3E, 0x6A, 0xBF, 0x15, 0xC0,
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0x4B, 0x9E, 0x34, 0xE1, 0xB5, 0x60, 0xCA, 0x1F,
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0x62, 0xB7, 0x1D, 0xC8, 0x9C, 0x49, 0xE3, 0x36,
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0x19, 0xCC, 0x66, 0xB3, 0xE7, 0x32, 0x98, 0x4D,
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0x30, 0xE5, 0x4F, 0x9A, 0xCE, 0x1B, 0xB1, 0x64,
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0x72, 0xA7, 0x0D, 0xD8, 0x8C, 0x59, 0xF3, 0x26,
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0x5B, 0x8E, 0x24, 0xF1, 0xA5, 0x70, 0xDA, 0x0F,
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0x20, 0xF5, 0x5F, 0x8A, 0xDE, 0x0B, 0xA1, 0x74,
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0x09, 0xDC, 0x76, 0xA3, 0xF7, 0x22, 0x88, 0x5D,
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0xD6, 0x03, 0xA9, 0x7C, 0x28, 0xFD, 0x57, 0x82,
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0xFF, 0x2A, 0x80, 0x55, 0x01, 0xD4, 0x7E, 0xAB,
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0x84, 0x51, 0xFB, 0x2E, 0x7A, 0xAF, 0x05, 0xD0,
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0xAD, 0x78, 0xD2, 0x07, 0x53, 0x86, 0x2C, 0xF9
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};
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#define SVQ1_PROCESS_VECTOR()\
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for (; level > 0; i++) {\
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/* process next depth */\
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if (i == m) {\
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m = n;\
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if (--level == 0)\
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break;\
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}\
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/* divide block if next bit set */\
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if (get_bits (bitbuf, 1) == 0)\
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break;\
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/* add child nodes */\
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list[n++] = list[i];\
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list[n++] = list[i] + (((level & 1) ? pitch : 1) << ((level / 2) + 1));\
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}
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#define SVQ1_ADD_CODEBOOK()\
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/* add codebook entries to vector */\
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for (j=0; j < stages; j++) {\
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n3 = codebook[entries[j]] ^ 0x80808080;\
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n1 += ((n3 & 0xFF00FF00) >> 8);\
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n2 += (n3 & 0x00FF00FF);\
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}\
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\
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/* clip to [0..255] */\
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if (n1 & 0xFF00FF00) {\
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n3 = ((( n1 >> 15) & 0x00010001) | 0x01000100) - 0x00010001;\
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n1 += 0x7F007F00;\
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n1 |= (((~n1 >> 15) & 0x00010001) | 0x01000100) - 0x00010001;\
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n1 &= (n3 & 0x00FF00FF);\
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}\
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\
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if (n2 & 0xFF00FF00) {\
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n3 = ((( n2 >> 15) & 0x00010001) | 0x01000100) - 0x00010001;\
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n2 += 0x7F007F00;\
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n2 |= (((~n2 >> 15) & 0x00010001) | 0x01000100) - 0x00010001;\
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n2 &= (n3 & 0x00FF00FF);\
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}
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#define SVQ1_DO_CODEBOOK_INTRA()\
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for (y=0; y < height; y++) {\
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for (x=0; x < (width / 4); x++, codebook++) {\
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n1 = n4;\
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n2 = n4;\
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SVQ1_ADD_CODEBOOK()\
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/* store result */\
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dst[x] = (n1 << 8) | n2;\
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}\
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dst += (pitch / 4);\
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}
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#define SVQ1_DO_CODEBOOK_NONINTRA()\
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for (y=0; y < height; y++) {\
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for (x=0; x < (width / 4); x++, codebook++) {\
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n3 = dst[x];\
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/* add mean value to vector */\
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n1 = ((n3 & 0xFF00FF00) >> 8) + n4;\
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n2 = (n3 & 0x00FF00FF) + n4;\
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SVQ1_ADD_CODEBOOK()\
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/* store result */\
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dst[x] = (n1 << 8) | n2;\
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}\
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dst += (pitch / 4);\
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}
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#define SVQ1_CALC_CODEBOOK_ENTRIES(cbook)\
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codebook = (const uint32_t *) cbook[level];\
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bit_cache = get_bits (bitbuf, 4*stages);\
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/* calculate codebook entries for this vector */\
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for (j=0; j < stages; j++) {\
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entries[j] = (((bit_cache >> (4*(stages - j - 1))) & 0xF) + 16*j) << (level + 1);\
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}\
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mean -= (stages * 128);\
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n4 = ((mean + (mean >> 31)) << 16) | (mean & 0xFFFF);
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static int svq1_decode_block_intra (GetBitContext *bitbuf, uint8_t *pixels, int pitch ) {
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uint32_t bit_cache;
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uint8_t *list[63];
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uint32_t *dst;
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const uint32_t *codebook;
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int entries[6];
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int i, j, m, n;
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int mean, stages;
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unsigned x, y, width, height, level;
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uint32_t n1, n2, n3, n4;
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/* initialize list for breadth first processing of vectors */
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list[0] = pixels;
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/* recursively process vector */
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for (i=0, m=1, n=1, level=5; i < n; i++) {
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SVQ1_PROCESS_VECTOR();
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/* destination address and vector size */
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dst = (uint32_t *) list[i];
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width = 1 << ((4 + level) /2);
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height = 1 << ((3 + level) /2);
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/* get number of stages (-1 skips vector, 0 for mean only) */
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stages = get_vlc2(bitbuf, svq1_intra_multistage[level].table, 3, 3) - 1;
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if (stages == -1) {
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for (y=0; y < height; y++) {
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memset (&dst[y*(pitch / 4)], 0, width);
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}
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continue; /* skip vector */
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}
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if ((stages > 0) && (level >= 4)) {
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#ifdef DEBUG_SVQ1
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av_log(s->avctx, AV_LOG_INFO, "Error (svq1_decode_block_intra): invalid vector: stages=%i level=%i\n",stages,level);
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#endif
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return -1; /* invalid vector */
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}
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mean = get_vlc2(bitbuf, svq1_intra_mean.table, 8, 3);
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if (stages == 0) {
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for (y=0; y < height; y++) {
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memset (&dst[y*(pitch / 4)], mean, width);
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}
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} else {
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SVQ1_CALC_CODEBOOK_ENTRIES(svq1_intra_codebooks);
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SVQ1_DO_CODEBOOK_INTRA()
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}
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}
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return 0;
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}
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static int svq1_decode_block_non_intra (GetBitContext *bitbuf, uint8_t *pixels, int pitch ) {
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uint32_t bit_cache;
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uint8_t *list[63];
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uint32_t *dst;
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const uint32_t *codebook;
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int entries[6];
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int i, j, m, n;
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int mean, stages;
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int x, y, width, height, level;
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uint32_t n1, n2, n3, n4;
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/* initialize list for breadth first processing of vectors */
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list[0] = pixels;
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/* recursively process vector */
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for (i=0, m=1, n=1, level=5; i < n; i++) {
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SVQ1_PROCESS_VECTOR();
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/* destination address and vector size */
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dst = (uint32_t *) list[i];
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width = 1 << ((4 + level) /2);
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height = 1 << ((3 + level) /2);
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/* get number of stages (-1 skips vector, 0 for mean only) */
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stages = get_vlc2(bitbuf, svq1_inter_multistage[level].table, 3, 2) - 1;
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if (stages == -1) continue; /* skip vector */
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if ((stages > 0) && (level >= 4)) {
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#ifdef DEBUG_SVQ1
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av_log(s->avctx, AV_LOG_INFO, "Error (svq1_decode_block_non_intra): invalid vector: stages=%i level=%i\n",stages,level);
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#endif
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return -1; /* invalid vector */
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}
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mean = get_vlc2(bitbuf, svq1_inter_mean.table, 9, 3) - 256;
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SVQ1_CALC_CODEBOOK_ENTRIES(svq1_inter_codebooks);
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SVQ1_DO_CODEBOOK_NONINTRA()
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}
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return 0;
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}
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static int svq1_decode_motion_vector (GetBitContext *bitbuf, svq1_pmv_t *mv, svq1_pmv_t **pmv) {
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int diff;
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int i;
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for (i=0; i < 2; i++) {
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/* get motion code */
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diff = get_vlc2(bitbuf, svq1_motion_component.table, 7, 2);
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if(diff<0)
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return -1;
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else if(diff){
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if(get_bits1(bitbuf)) diff= -diff;
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}
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/* add median of motion vector predictors and clip result */
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if (i == 1)
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mv->y = ((diff + mid_pred(pmv[0]->y, pmv[1]->y, pmv[2]->y)) << 26) >> 26;
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else
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mv->x = ((diff + mid_pred(pmv[0]->x, pmv[1]->x, pmv[2]->x)) << 26) >> 26;
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}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void svq1_skip_block (uint8_t *current, uint8_t *previous, int pitch, int x, int y) {
|
|
uint8_t *src;
|
|
uint8_t *dst;
|
|
int i;
|
|
|
|
src = &previous[x + y*pitch];
|
|
dst = current;
|
|
|
|
for (i=0; i < 16; i++) {
|
|
memcpy (dst, src, 16);
|
|
src += pitch;
|
|
dst += pitch;
|
|
}
|
|
}
|
|
|
|
static int svq1_motion_inter_block (MpegEncContext *s, GetBitContext *bitbuf,
|
|
uint8_t *current, uint8_t *previous, int pitch,
|
|
svq1_pmv_t *motion, int x, int y) {
|
|
uint8_t *src;
|
|
uint8_t *dst;
|
|
svq1_pmv_t mv;
|
|
svq1_pmv_t *pmv[3];
|
|
int result;
|
|
|
|
/* predict and decode motion vector */
|
|
pmv[0] = &motion[0];
|
|
if (y == 0) {
|
|
pmv[1] =
|
|
pmv[2] = pmv[0];
|
|
}
|
|
else {
|
|
pmv[1] = &motion[(x / 8) + 2];
|
|
pmv[2] = &motion[(x / 8) + 4];
|
|
}
|
|
|
|
result = svq1_decode_motion_vector (bitbuf, &mv, pmv);
|
|
|
|
if (result != 0)
|
|
return result;
|
|
|
|
motion[0].x =
|
|
motion[(x / 8) + 2].x =
|
|
motion[(x / 8) + 3].x = mv.x;
|
|
motion[0].y =
|
|
motion[(x / 8) + 2].y =
|
|
motion[(x / 8) + 3].y = mv.y;
|
|
|
|
if(y + (mv.y >> 1)<0)
|
|
mv.y= 0;
|
|
if(x + (mv.x >> 1)<0)
|
|
mv.x= 0;
|
|
|
|
#if 0
|
|
int w= (s->width+15)&~15;
|
|
int h= (s->height+15)&~15;
|
|
if(x + (mv.x >> 1)<0 || y + (mv.y >> 1)<0 || x + (mv.x >> 1) + 16 > w || y + (mv.y >> 1) + 16> h)
|
|
av_log(s->avctx, AV_LOG_INFO, "%d %d %d %d\n", x, y, x + (mv.x >> 1), y + (mv.y >> 1));
|
|
#endif
|
|
|
|
src = &previous[(x + (mv.x >> 1)) + (y + (mv.y >> 1))*pitch];
|
|
dst = current;
|
|
|
|
s->dsp.put_pixels_tab[0][((mv.y & 1) << 1) | (mv.x & 1)](dst,src,pitch,16);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int svq1_motion_inter_4v_block (MpegEncContext *s, GetBitContext *bitbuf,
|
|
uint8_t *current, uint8_t *previous, int pitch,
|
|
svq1_pmv_t *motion,int x, int y) {
|
|
uint8_t *src;
|
|
uint8_t *dst;
|
|
svq1_pmv_t mv;
|
|
svq1_pmv_t *pmv[4];
|
|
int i, result;
|
|
|
|
/* predict and decode motion vector (0) */
|
|
pmv[0] = &motion[0];
|
|
if (y == 0) {
|
|
pmv[1] =
|
|
pmv[2] = pmv[0];
|
|
}
|
|
else {
|
|
pmv[1] = &motion[(x / 8) + 2];
|
|
pmv[2] = &motion[(x / 8) + 4];
|
|
}
|
|
|
|
result = svq1_decode_motion_vector (bitbuf, &mv, pmv);
|
|
|
|
if (result != 0)
|
|
return result;
|
|
|
|
/* predict and decode motion vector (1) */
|
|
pmv[0] = &mv;
|
|
if (y == 0) {
|
|
pmv[1] =
|
|
pmv[2] = pmv[0];
|
|
}
|
|
else {
|
|
pmv[1] = &motion[(x / 8) + 3];
|
|
}
|
|
result = svq1_decode_motion_vector (bitbuf, &motion[0], pmv);
|
|
|
|
if (result != 0)
|
|
return result;
|
|
|
|
/* predict and decode motion vector (2) */
|
|
pmv[1] = &motion[0];
|
|
pmv[2] = &motion[(x / 8) + 1];
|
|
|
|
result = svq1_decode_motion_vector (bitbuf, &motion[(x / 8) + 2], pmv);
|
|
|
|
if (result != 0)
|
|
return result;
|
|
|
|
/* predict and decode motion vector (3) */
|
|
pmv[2] = &motion[(x / 8) + 2];
|
|
pmv[3] = &motion[(x / 8) + 3];
|
|
|
|
result = svq1_decode_motion_vector (bitbuf, pmv[3], pmv);
|
|
|
|
if (result != 0)
|
|
return result;
|
|
|
|
/* form predictions */
|
|
for (i=0; i < 4; i++) {
|
|
int mvx= pmv[i]->x + (i&1)*16;
|
|
int mvy= pmv[i]->y + (i>>1)*16;
|
|
|
|
///XXX /FIXME cliping or padding?
|
|
if(y + (mvy >> 1)<0)
|
|
mvy= 0;
|
|
if(x + (mvx >> 1)<0)
|
|
mvx= 0;
|
|
|
|
#if 0
|
|
int w= (s->width+15)&~15;
|
|
int h= (s->height+15)&~15;
|
|
if(x + (mvx >> 1)<0 || y + (mvy >> 1)<0 || x + (mvx >> 1) + 8 > w || y + (mvy >> 1) + 8> h)
|
|
av_log(s->avctx, AV_LOG_INFO, "%d %d %d %d\n", x, y, x + (mvx >> 1), y + (mvy >> 1));
|
|
#endif
|
|
src = &previous[(x + (mvx >> 1)) + (y + (mvy >> 1))*pitch];
|
|
dst = current;
|
|
|
|
s->dsp.put_pixels_tab[1][((mvy & 1) << 1) | (mvx & 1)](dst,src,pitch,8);
|
|
|
|
/* select next block */
|
|
if (i & 1) {
|
|
current += 8*(pitch - 1);
|
|
} else {
|
|
current += 8;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int svq1_decode_delta_block (MpegEncContext *s, GetBitContext *bitbuf,
|
|
uint8_t *current, uint8_t *previous, int pitch,
|
|
svq1_pmv_t *motion, int x, int y) {
|
|
uint32_t block_type;
|
|
int result = 0;
|
|
|
|
/* get block type */
|
|
block_type = get_vlc2(bitbuf, svq1_block_type.table, 2, 2);
|
|
|
|
/* reset motion vectors */
|
|
if (block_type == SVQ1_BLOCK_SKIP || block_type == SVQ1_BLOCK_INTRA) {
|
|
motion[0].x =
|
|
motion[0].y =
|
|
motion[(x / 8) + 2].x =
|
|
motion[(x / 8) + 2].y =
|
|
motion[(x / 8) + 3].x =
|
|
motion[(x / 8) + 3].y = 0;
|
|
}
|
|
|
|
switch (block_type) {
|
|
case SVQ1_BLOCK_SKIP:
|
|
svq1_skip_block (current, previous, pitch, x, y);
|
|
break;
|
|
|
|
case SVQ1_BLOCK_INTER:
|
|
result = svq1_motion_inter_block (s, bitbuf, current, previous, pitch, motion, x, y);
|
|
|
|
if (result != 0)
|
|
{
|
|
#ifdef DEBUG_SVQ1
|
|
av_log(s->avctx, AV_LOG_INFO, "Error in svq1_motion_inter_block %i\n",result);
|
|
#endif
|
|
break;
|
|
}
|
|
result = svq1_decode_block_non_intra (bitbuf, current, pitch);
|
|
break;
|
|
|
|
case SVQ1_BLOCK_INTER_4V:
|
|
result = svq1_motion_inter_4v_block (s, bitbuf, current, previous, pitch, motion, x, y);
|
|
|
|
if (result != 0)
|
|
{
|
|
#ifdef DEBUG_SVQ1
|
|
av_log(s->avctx, AV_LOG_INFO, "Error in svq1_motion_inter_4v_block %i\n",result);
|
|
#endif
|
|
break;
|
|
}
|
|
result = svq1_decode_block_non_intra (bitbuf, current, pitch);
|
|
break;
|
|
|
|
case SVQ1_BLOCK_INTRA:
|
|
result = svq1_decode_block_intra (bitbuf, current, pitch);
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* standard video sizes */
|
|
static struct { int width; int height; } svq1_frame_size_table[8] = {
|
|
{ 160, 120 }, { 128, 96 }, { 176, 144 }, { 352, 288 },
|
|
{ 704, 576 }, { 240, 180 }, { 320, 240 }, { -1, -1 }
|
|
};
|
|
|
|
static uint16_t svq1_packet_checksum (uint8_t *data, int length, int value) {
|
|
int i;
|
|
|
|
for (i=0; i < length; i++) {
|
|
value = checksum_table[data[i] ^ (value >> 8)] ^ ((value & 0xFF) << 8);
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
static uint16_t svq1_component_checksum (uint16_t *pixels, int pitch,
|
|
int width, int height, int value) {
|
|
int x, y;
|
|
|
|
for (y=0; y < height; y++) {
|
|
for (x=0; x < width; x++) {
|
|
value = checksum_table[pixels[x] ^ (value >> 8)] ^ ((value & 0xFF) << 8);
|
|
}
|
|
|
|
pixels += pitch;
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
static void svq1_parse_string (GetBitContext *bitbuf, uint8_t *out) {
|
|
uint8_t seed;
|
|
int i;
|
|
|
|
out[0] = get_bits (bitbuf, 8);
|
|
|
|
seed = string_table[out[0]];
|
|
|
|
for (i=1; i <= out[0]; i++) {
|
|
out[i] = get_bits (bitbuf, 8) ^ seed;
|
|
seed = string_table[out[i] ^ seed];
|
|
}
|
|
}
|
|
|
|
static int svq1_decode_frame_header (GetBitContext *bitbuf,MpegEncContext *s) {
|
|
int frame_size_code;
|
|
int temporal_reference;
|
|
|
|
temporal_reference = get_bits (bitbuf, 8);
|
|
|
|
/* frame type */
|
|
s->pict_type= get_bits (bitbuf, 2)+1;
|
|
if(s->pict_type==4)
|
|
return -1;
|
|
|
|
if (s->pict_type == I_TYPE) {
|
|
|
|
/* unknown fields */
|
|
if (s->f_code == 0x50 || s->f_code == 0x60) {
|
|
int csum = get_bits (bitbuf, 16);
|
|
|
|
csum = svq1_packet_checksum ((uint8_t *)bitbuf->buffer, bitbuf->size_in_bits>>3, csum);
|
|
|
|
// av_log(s->avctx, AV_LOG_INFO, "%s checksum (%02x) for packet data\n",
|
|
// (csum == 0) ? "correct" : "incorrect", csum);
|
|
}
|
|
|
|
if ((s->f_code ^ 0x10) >= 0x50) {
|
|
char msg[256];
|
|
|
|
svq1_parse_string (bitbuf, (char *) msg);
|
|
|
|
av_log(s->avctx, AV_LOG_INFO, "embedded message: \"%s\"\n", (char *) msg);
|
|
}
|
|
|
|
skip_bits (bitbuf, 2);
|
|
skip_bits (bitbuf, 2);
|
|
skip_bits1 (bitbuf);
|
|
|
|
/* load frame size */
|
|
frame_size_code = get_bits (bitbuf, 3);
|
|
|
|
if (frame_size_code == 7) {
|
|
/* load width, height (12 bits each) */
|
|
s->width = get_bits (bitbuf, 12);
|
|
s->height = get_bits (bitbuf, 12);
|
|
|
|
if (!s->width || !s->height)
|
|
return -1;
|
|
} else {
|
|
/* get width, height from table */
|
|
s->width = svq1_frame_size_table[frame_size_code].width;
|
|
s->height = svq1_frame_size_table[frame_size_code].height;
|
|
}
|
|
}
|
|
|
|
/* unknown fields */
|
|
if (get_bits (bitbuf, 1) == 1) {
|
|
skip_bits1 (bitbuf); /* use packet checksum if (1) */
|
|
skip_bits1 (bitbuf); /* component checksums after image data if (1) */
|
|
|
|
if (get_bits (bitbuf, 2) != 0)
|
|
return -1;
|
|
}
|
|
|
|
if (get_bits (bitbuf, 1) == 1) {
|
|
skip_bits1 (bitbuf);
|
|
skip_bits (bitbuf, 4);
|
|
skip_bits1 (bitbuf);
|
|
skip_bits (bitbuf, 2);
|
|
|
|
while (get_bits (bitbuf, 1) == 1) {
|
|
skip_bits (bitbuf, 8);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int svq1_decode_frame(AVCodecContext *avctx,
|
|
void *data, int *data_size,
|
|
uint8_t *buf, int buf_size)
|
|
{
|
|
MpegEncContext *s=avctx->priv_data;
|
|
uint8_t *current, *previous;
|
|
int result, i, x, y, width, height;
|
|
AVFrame *pict = data;
|
|
|
|
if(buf==NULL && buf_size==0){
|
|
return 0;
|
|
}
|
|
|
|
/* initialize bit buffer */
|
|
init_get_bits(&s->gb,buf,buf_size*8);
|
|
|
|
/* decode frame header */
|
|
s->f_code = get_bits (&s->gb, 22);
|
|
|
|
if ((s->f_code & ~0x70) || !(s->f_code & 0x60))
|
|
return -1;
|
|
|
|
/* swap some header bytes (why?) */
|
|
if (s->f_code != 0x20) {
|
|
uint32_t *src = (uint32_t *) (buf + 4);
|
|
|
|
for (i=0; i < 4; i++) {
|
|
src[i] = ((src[i] << 16) | (src[i] >> 16)) ^ src[7 - i];
|
|
}
|
|
}
|
|
|
|
result = svq1_decode_frame_header (&s->gb, s);
|
|
|
|
if (result != 0)
|
|
{
|
|
#ifdef DEBUG_SVQ1
|
|
av_log(s->avctx, AV_LOG_INFO, "Error in svq1_decode_frame_header %i\n",result);
|
|
#endif
|
|
return result;
|
|
}
|
|
|
|
//FIXME this avoids some confusion for "B frames" without 2 references
|
|
//this should be removed after libavcodec can handle more flexible picture types & ordering
|
|
if(s->pict_type==B_TYPE && s->last_picture_ptr==NULL) return buf_size;
|
|
|
|
if(avctx->hurry_up && s->pict_type==B_TYPE) return buf_size;
|
|
|
|
if(MPV_frame_start(s, avctx) < 0)
|
|
return -1;
|
|
|
|
/* decode y, u and v components */
|
|
for (i=0; i < 3; i++) {
|
|
int linesize;
|
|
if (i == 0) {
|
|
width = (s->width+15)&~15;
|
|
height = (s->height+15)&~15;
|
|
linesize= s->linesize;
|
|
} else {
|
|
if(s->flags&CODEC_FLAG_GRAY) break;
|
|
width = (s->width/4+15)&~15;
|
|
height = (s->height/4+15)&~15;
|
|
linesize= s->uvlinesize;
|
|
}
|
|
|
|
current = s->current_picture.data[i];
|
|
|
|
if(s->pict_type==B_TYPE){
|
|
previous = s->next_picture.data[i];
|
|
}else{
|
|
previous = s->last_picture.data[i];
|
|
}
|
|
|
|
if (s->pict_type == I_TYPE) {
|
|
/* keyframe */
|
|
for (y=0; y < height; y+=16) {
|
|
for (x=0; x < width; x+=16) {
|
|
result = svq1_decode_block_intra (&s->gb, ¤t[x], linesize);
|
|
if (result != 0)
|
|
{
|
|
//#ifdef DEBUG_SVQ1
|
|
av_log(s->avctx, AV_LOG_INFO, "Error in svq1_decode_block %i (keyframe)\n",result);
|
|
//#endif
|
|
return result;
|
|
}
|
|
}
|
|
current += 16*linesize;
|
|
}
|
|
} else {
|
|
svq1_pmv_t pmv[width/8+3];
|
|
/* delta frame */
|
|
memset (pmv, 0, ((width / 8) + 3) * sizeof(svq1_pmv_t));
|
|
|
|
for (y=0; y < height; y+=16) {
|
|
for (x=0; x < width; x+=16) {
|
|
result = svq1_decode_delta_block (s, &s->gb, ¤t[x], previous,
|
|
linesize, pmv, x, y);
|
|
if (result != 0)
|
|
{
|
|
#ifdef DEBUG_SVQ1
|
|
av_log(s->avctx, AV_LOG_INFO, "Error in svq1_decode_delta_block %i\n",result);
|
|
#endif
|
|
return result;
|
|
}
|
|
}
|
|
|
|
pmv[0].x =
|
|
pmv[0].y = 0;
|
|
|
|
current += 16*linesize;
|
|
}
|
|
}
|
|
}
|
|
|
|
*pict = *(AVFrame*)&s->current_picture;
|
|
|
|
|
|
MPV_frame_end(s);
|
|
|
|
*data_size=sizeof(AVFrame);
|
|
return buf_size;
|
|
}
|
|
|
|
static int svq1_decode_init(AVCodecContext *avctx)
|
|
{
|
|
MpegEncContext *s = avctx->priv_data;
|
|
int i;
|
|
|
|
MPV_decode_defaults(s);
|
|
|
|
s->avctx = avctx;
|
|
s->width = (avctx->width+3)&~3;
|
|
s->height = (avctx->height+3)&~3;
|
|
s->codec_id= avctx->codec->id;
|
|
avctx->pix_fmt = PIX_FMT_YUV410P;
|
|
avctx->has_b_frames= 1; // not true, but DP frames and these behave like unidirectional b frames
|
|
s->flags= avctx->flags;
|
|
if (MPV_common_init(s) < 0) return -1;
|
|
|
|
init_vlc(&svq1_block_type, 2, 4,
|
|
&svq1_block_type_vlc[0][1], 2, 1,
|
|
&svq1_block_type_vlc[0][0], 2, 1);
|
|
|
|
init_vlc(&svq1_motion_component, 7, 33,
|
|
&mvtab[0][1], 2, 1,
|
|
&mvtab[0][0], 2, 1);
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
init_vlc(&svq1_intra_multistage[i], 3, 8,
|
|
&svq1_intra_multistage_vlc[i][0][1], 2, 1,
|
|
&svq1_intra_multistage_vlc[i][0][0], 2, 1);
|
|
init_vlc(&svq1_inter_multistage[i], 3, 8,
|
|
&svq1_inter_multistage_vlc[i][0][1], 2, 1,
|
|
&svq1_inter_multistage_vlc[i][0][0], 2, 1);
|
|
}
|
|
|
|
init_vlc(&svq1_intra_mean, 8, 256,
|
|
&svq1_intra_mean_vlc[0][1], 4, 2,
|
|
&svq1_intra_mean_vlc[0][0], 4, 2);
|
|
|
|
init_vlc(&svq1_inter_mean, 9, 512,
|
|
&svq1_inter_mean_vlc[0][1], 4, 2,
|
|
&svq1_inter_mean_vlc[0][0], 4, 2);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int svq1_decode_end(AVCodecContext *avctx)
|
|
{
|
|
MpegEncContext *s = avctx->priv_data;
|
|
|
|
MPV_common_end(s);
|
|
return 0;
|
|
}
|
|
|
|
static void svq1_write_header(SVQ1Context *s, int frame_type)
|
|
{
|
|
int i;
|
|
|
|
/* frame code */
|
|
put_bits(&s->pb, 22, 0x20);
|
|
|
|
/* temporal reference (sure hope this is a "don't care") */
|
|
put_bits(&s->pb, 8, 0x00);
|
|
|
|
/* frame type */
|
|
put_bits(&s->pb, 2, frame_type - 1);
|
|
|
|
if (frame_type == I_TYPE) {
|
|
|
|
/* no checksum since frame code is 0x20 */
|
|
|
|
/* no embedded string either */
|
|
|
|
/* output 5 unknown bits (2 + 2 + 1) */
|
|
put_bits(&s->pb, 5, 0);
|
|
|
|
for (i = 0; i < 7; i++)
|
|
{
|
|
if ((svq1_frame_size_table[i].width == s->frame_width) &&
|
|
(svq1_frame_size_table[i].height == s->frame_height))
|
|
{
|
|
put_bits(&s->pb, 3, i);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (i == 7)
|
|
{
|
|
put_bits(&s->pb, 3, 7);
|
|
put_bits(&s->pb, 12, s->frame_width);
|
|
put_bits(&s->pb, 12, s->frame_height);
|
|
}
|
|
}
|
|
|
|
/* no checksum or extra data (next 2 bits get 0) */
|
|
put_bits(&s->pb, 2, 0);
|
|
}
|
|
|
|
|
|
#define QUALITY_THRESHOLD 100
|
|
#define THRESHOLD_MULTIPLIER 0.6
|
|
|
|
#if defined(HAVE_ALTIVEC)
|
|
#undef vector
|
|
#endif
|
|
|
|
static int encode_block(SVQ1Context *s, uint8_t *src, uint8_t *ref, uint8_t *decoded, int stride, int level, int threshold, int lambda, int intra){
|
|
int count, y, x, i, j, split, best_mean, best_score, best_count;
|
|
int best_vector[6];
|
|
int block_sum[7]= {0, 0, 0, 0, 0, 0};
|
|
int w= 2<<((level+2)>>1);
|
|
int h= 2<<((level+1)>>1);
|
|
int size=w*h;
|
|
int16_t block[7][256];
|
|
const int8_t *codebook_sum, *codebook;
|
|
const uint16_t (*mean_vlc)[2];
|
|
const uint8_t (*multistage_vlc)[2];
|
|
|
|
best_score=0;
|
|
//FIXME optimize, this doenst need to be done multiple times
|
|
if(intra){
|
|
codebook_sum= svq1_intra_codebook_sum[level];
|
|
codebook= svq1_intra_codebooks[level];
|
|
mean_vlc= svq1_intra_mean_vlc;
|
|
multistage_vlc= svq1_intra_multistage_vlc[level];
|
|
for(y=0; y<h; y++){
|
|
for(x=0; x<w; x++){
|
|
int v= src[x + y*stride];
|
|
block[0][x + w*y]= v;
|
|
best_score += v*v;
|
|
block_sum[0] += v;
|
|
}
|
|
}
|
|
}else{
|
|
codebook_sum= svq1_inter_codebook_sum[level];
|
|
codebook= svq1_inter_codebooks[level];
|
|
mean_vlc= svq1_inter_mean_vlc + 256;
|
|
multistage_vlc= svq1_inter_multistage_vlc[level];
|
|
for(y=0; y<h; y++){
|
|
for(x=0; x<w; x++){
|
|
int v= src[x + y*stride] - ref[x + y*stride];
|
|
block[0][x + w*y]= v;
|
|
best_score += v*v;
|
|
block_sum[0] += v;
|
|
}
|
|
}
|
|
}
|
|
|
|
best_count=0;
|
|
best_score -= ((block_sum[0]*block_sum[0])>>(level+3));
|
|
best_mean= (block_sum[0] + (size>>1)) >> (level+3);
|
|
|
|
if(level<4){
|
|
for(count=1; count<7; count++){
|
|
int best_vector_score= INT_MAX;
|
|
int best_vector_sum=-999, best_vector_mean=-999;
|
|
const int stage= count-1;
|
|
const int8_t *vector;
|
|
|
|
for(i=0; i<16; i++){
|
|
int sum= codebook_sum[stage*16 + i];
|
|
int sqr=0;
|
|
int diff, mean, score;
|
|
|
|
vector = codebook + stage*size*16 + i*size;
|
|
|
|
for(j=0; j<size; j++){
|
|
int v= vector[j];
|
|
sqr += (v - block[stage][j])*(v - block[stage][j]);
|
|
}
|
|
diff= block_sum[stage] - sum;
|
|
mean= (diff + (size>>1)) >> (level+3);
|
|
assert(mean >-300 && mean<300);
|
|
if(intra) mean= clip(mean, 0, 255);
|
|
else mean= clip(mean, -256, 255);
|
|
score= sqr - ((diff*(int64_t)diff)>>(level+3)); //FIXME 64bit slooow
|
|
if(score < best_vector_score){
|
|
best_vector_score= score;
|
|
best_vector[stage]= i;
|
|
best_vector_sum= sum;
|
|
best_vector_mean= mean;
|
|
}
|
|
}
|
|
assert(best_vector_mean != -999);
|
|
vector= codebook + stage*size*16 + best_vector[stage]*size;
|
|
for(j=0; j<size; j++){
|
|
block[stage+1][j] = block[stage][j] - vector[j];
|
|
}
|
|
block_sum[stage+1]= block_sum[stage] - best_vector_sum;
|
|
best_vector_score +=
|
|
lambda*(+ 1 + 4*count
|
|
+ multistage_vlc[1+count][1]
|
|
+ mean_vlc[best_vector_mean][1]);
|
|
|
|
if(best_vector_score < best_score){
|
|
best_score= best_vector_score;
|
|
best_count= count;
|
|
best_mean= best_vector_mean;
|
|
}
|
|
}
|
|
}
|
|
|
|
split=0;
|
|
if(best_score > threshold && level){
|
|
int score=0;
|
|
int offset= (level&1) ? stride*h/2 : w/2;
|
|
PutBitContext backup[6];
|
|
|
|
for(i=level-1; i>=0; i--){
|
|
backup[i]= s->reorder_pb[i];
|
|
}
|
|
score += encode_block(s, src , ref , decoded , stride, level-1, threshold>>1, lambda, intra);
|
|
score += encode_block(s, src + offset, ref + offset, decoded + offset, stride, level-1, threshold>>1, lambda, intra);
|
|
score += lambda;
|
|
|
|
if(score < best_score){
|
|
best_score= score;
|
|
split=1;
|
|
}else{
|
|
for(i=level-1; i>=0; i--){
|
|
s->reorder_pb[i]= backup[i];
|
|
}
|
|
}
|
|
}
|
|
if (level > 0)
|
|
put_bits(&s->reorder_pb[level], 1, split);
|
|
|
|
if(!split){
|
|
assert((best_mean >= 0 && best_mean<256) || !intra);
|
|
assert(best_mean >= -256 && best_mean<256);
|
|
assert(best_count >=0 && best_count<7);
|
|
assert(level<4 || best_count==0);
|
|
|
|
/* output the encoding */
|
|
put_bits(&s->reorder_pb[level],
|
|
multistage_vlc[1 + best_count][1],
|
|
multistage_vlc[1 + best_count][0]);
|
|
put_bits(&s->reorder_pb[level], mean_vlc[best_mean][1],
|
|
mean_vlc[best_mean][0]);
|
|
|
|
for (i = 0; i < best_count; i++){
|
|
assert(best_vector[i]>=0 && best_vector[i]<16);
|
|
put_bits(&s->reorder_pb[level], 4, best_vector[i]);
|
|
}
|
|
|
|
for(y=0; y<h; y++){
|
|
for(x=0; x<w; x++){
|
|
decoded[x + y*stride]= src[x + y*stride] - block[best_count][x + w*y] + best_mean;
|
|
}
|
|
}
|
|
}
|
|
|
|
return best_score;
|
|
}
|
|
|
|
#ifdef CONFIG_ENCODERS
|
|
|
|
static void svq1_encode_plane(SVQ1Context *s, int plane, unsigned char *src_plane, unsigned char *ref_plane, unsigned char *decoded_plane,
|
|
int width, int height, int src_stride, int stride)
|
|
{
|
|
int x, y;
|
|
int i;
|
|
int block_width, block_height;
|
|
int level;
|
|
int threshold[6];
|
|
const int lambda= (s->picture.quality*s->picture.quality) >> (2*FF_LAMBDA_SHIFT);
|
|
|
|
/* figure out the acceptable level thresholds in advance */
|
|
threshold[5] = QUALITY_THRESHOLD;
|
|
for (level = 4; level >= 0; level--)
|
|
threshold[level] = threshold[level + 1] * THRESHOLD_MULTIPLIER;
|
|
|
|
block_width = (width + 15) / 16;
|
|
block_height = (height + 15) / 16;
|
|
|
|
if(s->picture.pict_type == P_TYPE){
|
|
s->m.avctx= s->avctx;
|
|
s->m.current_picture_ptr= &s->m.current_picture;
|
|
s->m.last_picture_ptr = &s->m.last_picture;
|
|
s->m.last_picture.data[0]= ref_plane;
|
|
s->m.linesize=
|
|
s->m.last_picture.linesize[0]=
|
|
s->m.new_picture.linesize[0]=
|
|
s->m.current_picture.linesize[0]= stride;
|
|
s->m.width= width;
|
|
s->m.height= height;
|
|
s->m.mb_width= block_width;
|
|
s->m.mb_height= block_height;
|
|
s->m.mb_stride= s->m.mb_width+1;
|
|
s->m.b8_stride= 2*s->m.mb_width+1;
|
|
s->m.f_code=1;
|
|
s->m.pict_type= s->picture.pict_type;
|
|
s->m.qscale= s->picture.quality/FF_QP2LAMBDA;
|
|
s->m.me_method= s->avctx->me_method;
|
|
|
|
if(!s->motion_val8[plane]){
|
|
s->motion_val8 [plane]= av_mallocz((s->m.b8_stride*block_height*2 + 2)*2*sizeof(int16_t));
|
|
s->motion_val16[plane]= av_mallocz((s->m.mb_stride*(block_height + 2) + 1)*2*sizeof(int16_t));
|
|
}
|
|
|
|
s->m.mb_type= s->mb_type;
|
|
|
|
//dummies, to avoid segfaults
|
|
s->m.current_picture.mb_mean= (uint8_t *)s->dummy;
|
|
s->m.current_picture.mb_var= (uint16_t*)s->dummy;
|
|
s->m.current_picture.mc_mb_var= (uint16_t*)s->dummy;
|
|
s->m.current_picture.mb_type= s->dummy;
|
|
|
|
s->m.current_picture.motion_val[0]= s->motion_val8[plane] + 2;
|
|
s->m.p_mv_table= s->motion_val16[plane] + s->m.mb_stride + 1;
|
|
s->m.dsp= s->dsp; //move
|
|
ff_init_me(&s->m);
|
|
|
|
s->m.me.dia_size= s->avctx->dia_size;
|
|
s->m.first_slice_line=1;
|
|
for (y = 0; y < block_height; y++) {
|
|
uint8_t src[stride*16];
|
|
|
|
s->m.new_picture.data[0]= src - y*16*stride; //ugly
|
|
s->m.mb_y= y;
|
|
|
|
for(i=0; i<16 && i + 16*y<height; i++){
|
|
memcpy(&src[i*stride], &src_plane[(i+16*y)*src_stride], width);
|
|
for(x=width; x<16*block_width; x++)
|
|
src[i*stride+x]= src[i*stride+x-1];
|
|
}
|
|
for(; i<16 && i + 16*y<16*block_height; i++)
|
|
memcpy(&src[i*stride], &src[(i-1)*stride], 16*block_width);
|
|
|
|
for (x = 0; x < block_width; x++) {
|
|
s->m.mb_x= x;
|
|
ff_init_block_index(&s->m);
|
|
ff_update_block_index(&s->m);
|
|
|
|
ff_estimate_p_frame_motion(&s->m, x, y);
|
|
}
|
|
s->m.first_slice_line=0;
|
|
}
|
|
|
|
ff_fix_long_p_mvs(&s->m);
|
|
ff_fix_long_mvs(&s->m, NULL, 0, s->m.p_mv_table, s->m.f_code, CANDIDATE_MB_TYPE_INTER, 0);
|
|
}
|
|
|
|
s->m.first_slice_line=1;
|
|
for (y = 0; y < block_height; y++) {
|
|
uint8_t src[stride*16];
|
|
|
|
for(i=0; i<16 && i + 16*y<height; i++){
|
|
memcpy(&src[i*stride], &src_plane[(i+16*y)*src_stride], width);
|
|
for(x=width; x<16*block_width; x++)
|
|
src[i*stride+x]= src[i*stride+x-1];
|
|
}
|
|
for(; i<16 && i + 16*y<16*block_height; i++)
|
|
memcpy(&src[i*stride], &src[(i-1)*stride], 16*block_width);
|
|
|
|
s->m.mb_y= y;
|
|
for (x = 0; x < block_width; x++) {
|
|
uint8_t reorder_buffer[3][6][7*32];
|
|
int count[3][6];
|
|
int offset = y * 16 * stride + x * 16;
|
|
uint8_t *decoded= decoded_plane + offset;
|
|
uint8_t *ref= ref_plane + offset;
|
|
int score[4]={0,0,0,0}, best;
|
|
uint8_t temp[16*stride];
|
|
|
|
s->m.mb_x= x;
|
|
ff_init_block_index(&s->m);
|
|
ff_update_block_index(&s->m);
|
|
|
|
if(s->picture.pict_type == I_TYPE || (s->m.mb_type[x + y*s->m.mb_stride]&CANDIDATE_MB_TYPE_INTRA)){
|
|
for(i=0; i<6; i++){
|
|
init_put_bits(&s->reorder_pb[i], reorder_buffer[0][i], 7*32);
|
|
}
|
|
if(s->picture.pict_type == P_TYPE){
|
|
const uint8_t *vlc= svq1_block_type_vlc[SVQ1_BLOCK_INTRA];
|
|
put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
|
|
score[0]= vlc[1]*lambda;
|
|
}
|
|
score[0]+= encode_block(s, src+16*x, NULL, temp, stride, 5, 64, lambda, 1);
|
|
for(i=0; i<6; i++){
|
|
count[0][i]= put_bits_count(&s->reorder_pb[i]);
|
|
flush_put_bits(&s->reorder_pb[i]);
|
|
}
|
|
}else
|
|
score[0]= INT_MAX;
|
|
|
|
best=0;
|
|
|
|
if(s->picture.pict_type == P_TYPE){
|
|
const uint8_t *vlc= svq1_block_type_vlc[SVQ1_BLOCK_INTER];
|
|
int mx, my, pred_x, pred_y, dxy;
|
|
int16_t *motion_ptr;
|
|
|
|
motion_ptr= h263_pred_motion(&s->m, 0, 0, &pred_x, &pred_y);
|
|
if(s->m.mb_type[x + y*s->m.mb_stride]&CANDIDATE_MB_TYPE_INTER){
|
|
for(i=0; i<6; i++)
|
|
init_put_bits(&s->reorder_pb[i], reorder_buffer[1][i], 7*32);
|
|
|
|
put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
|
|
|
|
s->m.pb= s->reorder_pb[5];
|
|
mx= motion_ptr[0];
|
|
my= motion_ptr[1];
|
|
assert(mx>=-32 && mx<=31);
|
|
assert(my>=-32 && my<=31);
|
|
assert(pred_x>=-32 && pred_x<=31);
|
|
assert(pred_y>=-32 && pred_y<=31);
|
|
ff_h263_encode_motion(&s->m, mx - pred_x, 1);
|
|
ff_h263_encode_motion(&s->m, my - pred_y, 1);
|
|
s->reorder_pb[5]= s->m.pb;
|
|
score[1] += lambda*put_bits_count(&s->reorder_pb[5]);
|
|
|
|
dxy= (mx&1) + 2*(my&1);
|
|
|
|
s->dsp.put_pixels_tab[0][dxy](temp+16, ref + (mx>>1) + stride*(my>>1), stride, 16);
|
|
|
|
score[1]+= encode_block(s, src+16*x, temp+16, decoded, stride, 5, 64, lambda, 0);
|
|
best= score[1] <= score[0];
|
|
|
|
vlc= svq1_block_type_vlc[SVQ1_BLOCK_SKIP];
|
|
score[2]= s->dsp.sse[0](NULL, src+16*x, ref, stride, 16);
|
|
score[2]+= vlc[1]*lambda;
|
|
if(score[2] < score[best] && mx==0 && my==0){
|
|
best=2;
|
|
s->dsp.put_pixels_tab[0][0](decoded, ref, stride, 16);
|
|
for(i=0; i<6; i++){
|
|
count[2][i]=0;
|
|
}
|
|
put_bits(&s->pb, vlc[1], vlc[0]);
|
|
}
|
|
}
|
|
|
|
if(best==1){
|
|
for(i=0; i<6; i++){
|
|
count[1][i]= put_bits_count(&s->reorder_pb[i]);
|
|
flush_put_bits(&s->reorder_pb[i]);
|
|
}
|
|
}else{
|
|
motion_ptr[0 ] = motion_ptr[1 ]=
|
|
motion_ptr[2 ] = motion_ptr[3 ]=
|
|
motion_ptr[0+2*s->m.b8_stride] = motion_ptr[1+2*s->m.b8_stride]=
|
|
motion_ptr[2+2*s->m.b8_stride] = motion_ptr[3+2*s->m.b8_stride]=0;
|
|
}
|
|
}
|
|
|
|
s->rd_total += score[best];
|
|
|
|
for(i=5; i>=0; i--){
|
|
ff_copy_bits(&s->pb, reorder_buffer[best][i], count[best][i]);
|
|
}
|
|
if(best==0){
|
|
s->dsp.put_pixels_tab[0][0](decoded, temp, stride, 16);
|
|
}
|
|
}
|
|
s->m.first_slice_line=0;
|
|
}
|
|
}
|
|
|
|
static int svq1_encode_init(AVCodecContext *avctx)
|
|
{
|
|
SVQ1Context * const s = avctx->priv_data;
|
|
|
|
dsputil_init(&s->dsp, avctx);
|
|
avctx->coded_frame= (AVFrame*)&s->picture;
|
|
|
|
s->frame_width = avctx->width;
|
|
s->frame_height = avctx->height;
|
|
|
|
s->y_block_width = (s->frame_width + 15) / 16;
|
|
s->y_block_height = (s->frame_height + 15) / 16;
|
|
|
|
s->c_block_width = (s->frame_width / 4 + 15) / 16;
|
|
s->c_block_height = (s->frame_height / 4 + 15) / 16;
|
|
|
|
s->avctx= avctx;
|
|
s->m.me.scratchpad= av_mallocz((avctx->width+64)*2*16*2*sizeof(uint8_t));
|
|
s->m.me.map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
|
|
s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
|
|
s->mb_type = av_mallocz((s->y_block_width+1)*s->y_block_height*sizeof(int16_t));
|
|
s->dummy = av_mallocz((s->y_block_width+1)*s->y_block_height*sizeof(int32_t));
|
|
h263_encode_init(&s->m); //mv_penalty
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int svq1_encode_frame(AVCodecContext *avctx, unsigned char *buf,
|
|
int buf_size, void *data)
|
|
{
|
|
SVQ1Context * const s = avctx->priv_data;
|
|
AVFrame *pict = data;
|
|
AVFrame * const p= (AVFrame*)&s->picture;
|
|
AVFrame temp;
|
|
int i;
|
|
|
|
if(avctx->pix_fmt != PIX_FMT_YUV410P){
|
|
av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");
|
|
return -1;
|
|
}
|
|
|
|
if(!s->current_picture.data[0]){
|
|
avctx->get_buffer(avctx, &s->current_picture);
|
|
avctx->get_buffer(avctx, &s->last_picture);
|
|
}
|
|
|
|
temp= s->current_picture;
|
|
s->current_picture= s->last_picture;
|
|
s->last_picture= temp;
|
|
|
|
init_put_bits(&s->pb, buf, buf_size);
|
|
|
|
*p = *pict;
|
|
p->pict_type = avctx->frame_number % avctx->gop_size ? P_TYPE : I_TYPE;
|
|
p->key_frame = p->pict_type == I_TYPE;
|
|
|
|
svq1_write_header(s, p->pict_type);
|
|
for(i=0; i<3; i++){
|
|
svq1_encode_plane(s, i,
|
|
s->picture.data[i], s->last_picture.data[i], s->current_picture.data[i],
|
|
s->frame_width / (i?4:1), s->frame_height / (i?4:1),
|
|
s->picture.linesize[i], s->current_picture.linesize[i]);
|
|
}
|
|
|
|
// align_put_bits(&s->pb);
|
|
while(put_bits_count(&s->pb) & 31)
|
|
put_bits(&s->pb, 1, 0);
|
|
|
|
flush_put_bits(&s->pb);
|
|
|
|
return (put_bits_count(&s->pb) / 8);
|
|
}
|
|
|
|
static int svq1_encode_end(AVCodecContext *avctx)
|
|
{
|
|
SVQ1Context * const s = avctx->priv_data;
|
|
int i;
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "RD: %f\n", s->rd_total/(double)(avctx->width*avctx->height*avctx->frame_number));
|
|
|
|
av_freep(&s->m.me.scratchpad);
|
|
av_freep(&s->m.me.map);
|
|
av_freep(&s->m.me.score_map);
|
|
av_freep(&s->mb_type);
|
|
av_freep(&s->dummy);
|
|
|
|
for(i=0; i<3; i++){
|
|
av_freep(&s->motion_val8[i]);
|
|
av_freep(&s->motion_val16[i]);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif //CONFIG_ENCODERS
|
|
|
|
AVCodec svq1_decoder = {
|
|
"svq1",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_SVQ1,
|
|
sizeof(MpegEncContext),
|
|
svq1_decode_init,
|
|
NULL,
|
|
svq1_decode_end,
|
|
svq1_decode_frame,
|
|
CODEC_CAP_DR1,
|
|
.flush= ff_mpeg_flush,
|
|
.pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV410P, -1},
|
|
};
|
|
|
|
#ifdef CONFIG_ENCODERS
|
|
|
|
AVCodec svq1_encoder = {
|
|
"svq1",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_SVQ1,
|
|
sizeof(SVQ1Context),
|
|
svq1_encode_init,
|
|
svq1_encode_frame,
|
|
svq1_encode_end,
|
|
.pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV410P, -1},
|
|
};
|
|
|
|
#endif //CONFIG_ENCODERS
|