2008-03-18 20:51:34 +01:00
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/*
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2012-04-06 19:56:45 +02:00
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* Copyright (C) 2005 Ole André Vadla Ravnås <oleavr@gmail.com>
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2011-03-16 19:40:33 +01:00
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* Copyright (C) 2008 Ramiro Polla
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2008-03-18 20:51:34 +01:00
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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2020-05-27 14:54:38 +02:00
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#include "libavutil/mem_internal.h"
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2020-10-28 14:35:19 +01:00
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#include "libavutil/thread.h"
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2008-03-18 20:51:34 +01:00
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#include "avcodec.h"
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2014-01-14 10:33:47 +01:00
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#include "blockdsp.h"
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2011-11-15 21:34:50 +01:00
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#include "internal.h"
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2009-04-13 18:20:26 +02:00
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#include "get_bits.h"
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2008-04-22 22:24:07 +02:00
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#include "bytestream.h"
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2014-02-13 17:57:05 +01:00
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#include "bswapdsp.h"
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2013-03-10 21:32:10 +01:00
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#include "hpeldsp.h"
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2014-01-24 11:55:16 +01:00
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#include "idctdsp.h"
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2011-03-22 22:36:57 +01:00
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#include "thread.h"
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2008-03-18 20:51:34 +01:00
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#define MIMIC_HEADER_SIZE 20
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2020-10-28 14:06:23 +01:00
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#define MIMIC_VLC_BITS 11
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2008-03-18 20:51:34 +01:00
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2014-09-22 11:01:31 +02:00
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typedef struct MimicContext {
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2008-03-18 20:51:34 +01:00
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AVCodecContext *avctx;
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int num_vblocks[3];
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int num_hblocks[3];
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2009-04-12 14:25:53 +02:00
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void *swap_buf;
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2008-03-18 20:51:34 +01:00
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int swap_buf_size;
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int cur_index;
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int prev_index;
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2012-11-21 21:34:46 +01:00
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ThreadFrame frames [16];
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2008-03-18 20:51:34 +01:00
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2017-10-02 01:29:32 +02:00
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DECLARE_ALIGNED(32, int16_t, dct_block)[64];
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2008-03-18 20:51:34 +01:00
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GetBitContext gb;
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ScanTable scantable;
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2014-01-14 10:33:47 +01:00
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BlockDSPContext bdsp;
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2014-02-13 17:57:05 +01:00
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BswapDSPContext bbdsp;
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2013-03-10 21:32:10 +01:00
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HpelDSPContext hdsp;
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2014-01-24 11:55:16 +01:00
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IDCTDSPContext idsp;
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2011-03-22 22:36:57 +01:00
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/* Kept in the context so multithreading can have a constant to read from */
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int next_cur_index;
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int next_prev_index;
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2008-03-18 20:51:34 +01:00
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} MimicContext;
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2020-10-28 14:35:19 +01:00
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static VLC block_vlc;
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2020-10-28 14:17:40 +01:00
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static const uint8_t huffsyms[] = {
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0x10, 0x20, 0x30, 0x00, 0x11, 0x40, 0x50, 0x12, 0x13, 0x21, 0x31, 0x60,
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0x14, 0x15, 0x16, 0x22, 0x41, 0x17, 0x18, 0x23, 0x24, 0x25, 0x32, 0x42,
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0x51, 0x61, 0x70, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x26, 0x27,
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0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x33, 0x34, 0x35, 0x36, 0x37,
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0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x43, 0x44, 0x45, 0x46, 0x47,
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0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x52, 0x53, 0x54, 0x55, 0x56,
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0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x62, 0x63, 0x64, 0x65,
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0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x71, 0x72, 0x73,
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0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E,
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2008-03-18 20:51:34 +01:00
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};
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static const uint8_t huffbits[] = {
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2020-10-28 14:17:40 +01:00
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2, 2, 3, 4, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8,
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8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12,
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13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17,
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17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21,
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22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 24, 25, 25, 25, 25, 26, 26,
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26, 26, 27, 27, 27, 27, 28, 28, 28, 28, 29, 29, 29, 29, 30, 30, 30,
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2008-03-18 20:51:34 +01:00
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};
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static const uint8_t col_zag[64] = {
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0, 8, 1, 2, 9, 16, 24, 17,
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10, 3, 4, 11, 18, 25, 32, 40,
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33, 26, 19, 12, 5, 6, 13, 20,
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27, 34, 41, 48, 56, 49, 42, 35,
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28, 21, 14, 7, 15, 22, 29, 36,
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43, 50, 57, 58, 51, 44, 37, 30,
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23, 31, 38, 45, 52, 59, 39, 46,
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2008-04-19 14:34:48 +02:00
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53, 60, 61, 54, 47, 55, 62, 63,
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2008-03-18 20:51:34 +01:00
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};
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2012-11-21 21:34:46 +01:00
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static av_cold int mimic_decode_end(AVCodecContext *avctx)
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{
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MimicContext *ctx = avctx->priv_data;
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int i;
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2013-11-08 15:23:45 +01:00
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av_freep(&ctx->swap_buf);
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ctx->swap_buf_size = 0;
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2012-11-21 21:34:46 +01:00
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for (i = 0; i < FF_ARRAY_ELEMS(ctx->frames); i++) {
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if (ctx->frames[i].f)
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ff_thread_release_buffer(avctx, &ctx->frames[i]);
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av_frame_free(&ctx->frames[i].f);
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}
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return 0;
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}
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2020-10-28 14:35:19 +01:00
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static av_cold void mimic_init_static(void)
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{
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INIT_VLC_STATIC_FROM_LENGTHS(&block_vlc, MIMIC_VLC_BITS, FF_ARRAY_ELEMS(huffbits),
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huffbits, 1, huffsyms, 1, 1, 0, 0, 4368);
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}
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2008-03-21 04:11:20 +01:00
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static av_cold int mimic_decode_init(AVCodecContext *avctx)
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2008-03-18 20:51:34 +01:00
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{
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2020-10-28 14:35:19 +01:00
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static AVOnce init_static_once = AV_ONCE_INIT;
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2008-03-18 20:51:34 +01:00
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MimicContext *ctx = avctx->priv_data;
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2020-10-28 14:35:19 +01:00
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int i;
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2012-11-21 21:34:46 +01:00
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2008-03-18 20:51:34 +01:00
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ctx->prev_index = 0;
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2012-12-26 10:11:12 +01:00
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ctx->cur_index = 15;
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2008-03-18 20:51:34 +01:00
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2014-01-14 10:33:47 +01:00
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ff_blockdsp_init(&ctx->bdsp, avctx);
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2014-02-13 17:57:05 +01:00
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ff_bswapdsp_init(&ctx->bbdsp);
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2013-03-10 21:32:10 +01:00
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ff_hpeldsp_init(&ctx->hdsp, avctx->flags);
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2014-01-24 11:55:16 +01:00
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ff_idctdsp_init(&ctx->idsp, avctx);
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ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable, col_zag);
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2008-03-18 20:51:34 +01:00
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2012-11-21 21:34:46 +01:00
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for (i = 0; i < FF_ARRAY_ELEMS(ctx->frames); i++) {
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ctx->frames[i].f = av_frame_alloc();
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2020-11-15 13:34:57 +01:00
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if (!ctx->frames[i].f)
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2012-11-21 21:34:46 +01:00
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return AVERROR(ENOMEM);
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}
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2020-10-28 14:35:19 +01:00
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ff_thread_once(&init_static_once, mimic_init_static);
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2008-03-18 20:51:34 +01:00
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return 0;
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}
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2015-09-17 04:22:27 +02:00
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#if HAVE_THREADS
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2011-03-22 22:36:57 +01:00
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static int mimic_decode_update_thread_context(AVCodecContext *avctx, const AVCodecContext *avctx_from)
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{
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MimicContext *dst = avctx->priv_data, *src = avctx_from->priv_data;
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2012-11-21 21:34:46 +01:00
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int i, ret;
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2011-03-22 22:36:57 +01:00
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2012-12-26 10:11:12 +01:00
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if (avctx == avctx_from)
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return 0;
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2011-03-22 22:36:57 +01:00
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dst->cur_index = src->next_cur_index;
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dst->prev_index = src->next_prev_index;
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2012-11-21 21:34:46 +01:00
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for (i = 0; i < FF_ARRAY_ELEMS(dst->frames); i++) {
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ff_thread_release_buffer(avctx, &dst->frames[i]);
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2013-05-10 01:18:12 +02:00
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if (i != src->next_cur_index && src->frames[i].f->data[0]) {
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2012-11-21 21:34:46 +01:00
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ret = ff_thread_ref_frame(&dst->frames[i], &src->frames[i]);
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if (ret < 0)
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return ret;
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}
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}
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2011-03-22 22:36:57 +01:00
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return 0;
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}
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2015-09-17 04:22:27 +02:00
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#endif
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2011-03-22 22:36:57 +01:00
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2009-02-17 13:03:10 +01:00
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static const int8_t vlcdec_lookup[9][64] = {
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2008-03-18 20:51:34 +01:00
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{ 0, },
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{ -1, 1, },
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{ -3, 3, -2, 2, },
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{ -7, 7, -6, 6, -5, 5, -4, 4, },
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{ -15, 15, -14, 14, -13, 13, -12, 12,
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-11, 11, -10, 10, -9, 9, -8, 8, },
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{ -31, 31, -30, 30, -29, 29, -28, 28,
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-27, 27, -26, 26, -25, 25, -24, 24,
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-23, 23, -22, 22, -21, 21, -20, 20,
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-19, 19, -18, 18, -17, 17, -16, 16, },
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{ -63, 63, -62, 62, -61, 61, -60, 60,
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-59, 59, -58, 58, -57, 57, -56, 56,
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-55, 55, -54, 54, -53, 53, -52, 52,
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-51, 51, -50, 50, -49, 49, -48, 48,
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-47, 47, -46, 46, -45, 45, -44, 44,
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-43, 43, -42, 42, -41, 41, -40, 40,
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-39, 39, -38, 38, -37, 37, -36, 36,
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-35, 35, -34, 34, -33, 33, -32, 32, },
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{ -127, 127, -126, 126, -125, 125, -124, 124,
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-123, 123, -122, 122, -121, 121, -120, 120,
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-119, 119, -118, 118, -117, 117, -116, 116,
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-115, 115, -114, 114, -113, 113, -112, 112,
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-111, 111, -110, 110, -109, 109, -108, 108,
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-107, 107, -106, 106, -105, 105, -104, 104,
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-103, 103, -102, 102, -101, 101, -100, 100,
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-99, 99, -98, 98, -97, 97, -96, 96, },
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{ -95, 95, -94, 94, -93, 93, -92, 92,
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-91, 91, -90, 90, -89, 89, -88, 88,
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-87, 87, -86, 86, -85, 85, -84, 84,
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-83, 83, -82, 82, -81, 81, -80, 80,
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-79, 79, -78, 78, -77, 77, -76, 76,
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-75, 75, -74, 74, -73, 73, -72, 72,
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-71, 71, -70, 70, -69, 69, -68, 68,
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-67, 67, -66, 66, -65, 65, -64, 64, },
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};
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2008-04-19 15:03:12 +02:00
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static int vlc_decode_block(MimicContext *ctx, int num_coeffs, int qscale)
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2008-03-18 20:51:34 +01:00
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{
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2013-01-20 01:02:29 +01:00
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int16_t *block = ctx->dct_block;
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2008-03-18 20:51:34 +01:00
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unsigned int pos;
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2014-01-14 10:33:47 +01:00
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ctx->bdsp.clear_block(block);
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2008-03-18 20:51:34 +01:00
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block[0] = get_bits(&ctx->gb, 8) << 3;
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2012-12-26 10:11:12 +01:00
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for (pos = 1; pos < num_coeffs; pos++) {
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2008-03-18 20:51:34 +01:00
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uint32_t vlc, num_bits;
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int value;
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int coeff;
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2020-10-28 14:35:19 +01:00
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vlc = get_vlc2(&ctx->gb, block_vlc.table, MIMIC_VLC_BITS, 3);
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2012-12-26 10:11:12 +01:00
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if (!vlc) /* end-of-block code */
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2008-03-18 20:51:34 +01:00
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return 0;
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2012-12-26 10:35:16 +01:00
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if (vlc == -1)
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return AVERROR_INVALIDDATA;
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2008-03-18 20:51:34 +01:00
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/* pos_add and num_bits are coded in the vlc code */
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2012-12-26 10:11:12 +01:00
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pos += vlc & 15; // pos_add
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num_bits = vlc >> 4; // num_bits
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2008-03-18 20:51:34 +01:00
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2012-12-26 10:11:12 +01:00
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if (pos >= 64)
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2012-12-26 10:35:16 +01:00
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return AVERROR_INVALIDDATA;
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2008-03-18 20:51:34 +01:00
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value = get_bits(&ctx->gb, num_bits);
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2011-04-17 23:57:50 +02:00
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/* FFmpeg's IDCT behaves somewhat different from the original code, so
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2008-03-18 20:51:34 +01:00
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* a factor of 4 was added to the input */
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2017-05-11 15:07:28 +02:00
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coeff = ((int8_t*)vlcdec_lookup[num_bits])[value];
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2012-12-26 10:11:12 +01:00
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if (pos < 3)
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2017-05-06 15:17:29 +02:00
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coeff *= 16;
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2008-03-18 20:51:34 +01:00
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else /* TODO Use >> 10 instead of / 1001 */
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coeff = (coeff * qscale) / 1001;
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block[ctx->scantable.permutated[pos]] = coeff;
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}
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2012-12-26 10:35:16 +01:00
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return 0;
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2008-03-18 20:51:34 +01:00
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}
|
|
|
|
|
|
|
|
static int decode(MimicContext *ctx, int quality, int num_coeffs,
|
|
|
|
int is_iframe)
|
|
|
|
{
|
2012-12-26 10:35:16 +01:00
|
|
|
int ret, y, x, plane, cur_row = 0;
|
2008-03-18 20:51:34 +01:00
|
|
|
|
2012-12-26 10:11:12 +01:00
|
|
|
for (plane = 0; plane < 3; plane++) {
|
2008-03-18 20:51:34 +01:00
|
|
|
const int is_chroma = !!plane;
|
2012-12-26 10:11:12 +01:00
|
|
|
const int qscale = av_clip(10000 - quality, is_chroma ? 1000 : 2000,
|
|
|
|
10000) << 2;
|
2015-10-13 14:48:55 +02:00
|
|
|
const int stride = ctx->frames[ctx->cur_index ].f->linesize[plane];
|
|
|
|
const uint8_t *src = ctx->frames[ctx->prev_index].f->data[plane];
|
|
|
|
uint8_t *dst = ctx->frames[ctx->cur_index ].f->data[plane];
|
2012-12-26 10:11:12 +01:00
|
|
|
|
|
|
|
for (y = 0; y < ctx->num_vblocks[plane]; y++) {
|
|
|
|
for (x = 0; x < ctx->num_hblocks[plane]; x++) {
|
2008-03-18 20:51:34 +01:00
|
|
|
/* Check for a change condition in the current block.
|
|
|
|
* - iframes always change.
|
|
|
|
* - Luma plane changes on get_bits1 == 0
|
|
|
|
* - Chroma planes change on get_bits1 == 1 */
|
2012-12-26 10:11:12 +01:00
|
|
|
if (is_iframe || get_bits1(&ctx->gb) == is_chroma) {
|
2008-03-18 20:51:34 +01:00
|
|
|
/* Luma planes may use a backreference from the 15 last
|
|
|
|
* frames preceding the previous. (get_bits1 == 1)
|
|
|
|
* Chroma planes don't use backreferences. */
|
2012-12-26 10:11:12 +01:00
|
|
|
if (is_chroma || is_iframe || !get_bits1(&ctx->gb)) {
|
2012-12-26 10:35:16 +01:00
|
|
|
if ((ret = vlc_decode_block(ctx, num_coeffs,
|
|
|
|
qscale)) < 0) {
|
|
|
|
av_log(ctx->avctx, AV_LOG_ERROR, "Error decoding "
|
|
|
|
"block.\n");
|
|
|
|
return ret;
|
|
|
|
}
|
2014-01-24 11:55:16 +01:00
|
|
|
ctx->idsp.idct_put(dst, stride, ctx->dct_block);
|
2008-03-18 20:51:34 +01:00
|
|
|
} else {
|
|
|
|
unsigned int backref = get_bits(&ctx->gb, 4);
|
2012-12-26 10:11:12 +01:00
|
|
|
int index = (ctx->cur_index + backref) & 15;
|
2015-10-13 14:48:55 +02:00
|
|
|
uint8_t *p = ctx->frames[index].f->data[0];
|
2008-03-18 20:51:34 +01:00
|
|
|
|
2012-03-16 22:04:00 +01:00
|
|
|
if (index != ctx->cur_index && p) {
|
2012-11-21 21:34:46 +01:00
|
|
|
ff_thread_await_progress(&ctx->frames[index],
|
2012-12-26 10:11:12 +01:00
|
|
|
cur_row, 0);
|
2008-03-18 20:51:34 +01:00
|
|
|
p += src -
|
2015-10-13 14:48:55 +02:00
|
|
|
ctx->frames[ctx->prev_index].f->data[plane];
|
2013-03-10 21:32:10 +01:00
|
|
|
ctx->hdsp.put_pixels_tab[1][0](dst, p, stride, 8);
|
2008-03-18 20:51:34 +01:00
|
|
|
} else {
|
|
|
|
av_log(ctx->avctx, AV_LOG_ERROR,
|
|
|
|
"No such backreference! Buggy sample.\n");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} else {
|
2012-11-21 21:34:46 +01:00
|
|
|
ff_thread_await_progress(&ctx->frames[ctx->prev_index],
|
2012-12-26 10:11:12 +01:00
|
|
|
cur_row, 0);
|
2013-03-10 21:32:10 +01:00
|
|
|
ctx->hdsp.put_pixels_tab[1][0](dst, src, stride, 8);
|
2008-03-18 20:51:34 +01:00
|
|
|
}
|
|
|
|
src += 8;
|
|
|
|
dst += 8;
|
|
|
|
}
|
2012-12-26 10:11:12 +01:00
|
|
|
src += (stride - ctx->num_hblocks[plane]) << 3;
|
|
|
|
dst += (stride - ctx->num_hblocks[plane]) << 3;
|
2011-03-22 22:36:57 +01:00
|
|
|
|
2012-11-21 21:34:46 +01:00
|
|
|
ff_thread_report_progress(&ctx->frames[ctx->cur_index],
|
2012-12-26 10:11:12 +01:00
|
|
|
cur_row++, 0);
|
2008-03-18 20:51:34 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-12-26 10:35:16 +01:00
|
|
|
return 0;
|
2008-03-18 20:51:34 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2015-10-13 14:48:55 +02:00
|
|
|
* Flip the buffer upside-down and put it in the YVU order to revert the
|
2008-03-18 20:51:34 +01:00
|
|
|
* way Mimic encodes frames.
|
|
|
|
*/
|
2015-10-13 14:48:55 +02:00
|
|
|
static void flip_swap_frame(AVFrame *f)
|
2008-03-18 20:51:34 +01:00
|
|
|
{
|
|
|
|
int i;
|
2015-10-13 14:48:55 +02:00
|
|
|
uint8_t *data_1 = f->data[1];
|
|
|
|
f->data[0] = f->data[0] + ( f->height - 1) * f->linesize[0];
|
|
|
|
f->data[1] = f->data[2] + ((f->height >> 1) - 1) * f->linesize[2];
|
|
|
|
f->data[2] = data_1 + ((f->height >> 1) - 1) * f->linesize[1];
|
2012-12-26 10:11:12 +01:00
|
|
|
for (i = 0; i < 3; i++)
|
2015-10-13 14:48:55 +02:00
|
|
|
f->linesize[i] *= -1;
|
2008-03-18 20:51:34 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
static int mimic_decode_frame(AVCodecContext *avctx, void *data,
|
2012-11-13 19:35:22 +01:00
|
|
|
int *got_frame, AVPacket *avpkt)
|
2008-03-18 20:51:34 +01:00
|
|
|
{
|
2009-04-07 17:59:50 +02:00
|
|
|
const uint8_t *buf = avpkt->data;
|
2012-12-26 10:11:12 +01:00
|
|
|
int buf_size = avpkt->size;
|
|
|
|
int swap_buf_size = buf_size - MIMIC_HEADER_SIZE;
|
|
|
|
MimicContext *ctx = avctx->priv_data;
|
2012-03-12 15:56:40 +01:00
|
|
|
GetByteContext gb;
|
2008-03-18 20:51:34 +01:00
|
|
|
int is_pframe;
|
|
|
|
int width, height;
|
|
|
|
int quality, num_coeffs;
|
2012-03-16 22:04:00 +01:00
|
|
|
int res;
|
2008-03-18 20:51:34 +01:00
|
|
|
|
2012-03-12 15:56:41 +01:00
|
|
|
if (buf_size <= MIMIC_HEADER_SIZE) {
|
2008-03-18 20:51:34 +01:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "insufficient data\n");
|
2012-12-26 10:35:16 +01:00
|
|
|
return AVERROR_INVALIDDATA;
|
2008-03-18 20:51:34 +01:00
|
|
|
}
|
|
|
|
|
2012-03-12 15:56:40 +01:00
|
|
|
bytestream2_init(&gb, buf, MIMIC_HEADER_SIZE);
|
|
|
|
bytestream2_skip(&gb, 2); /* some constant (always 256) */
|
|
|
|
quality = bytestream2_get_le16u(&gb);
|
|
|
|
width = bytestream2_get_le16u(&gb);
|
|
|
|
height = bytestream2_get_le16u(&gb);
|
|
|
|
bytestream2_skip(&gb, 4); /* some constant */
|
|
|
|
is_pframe = bytestream2_get_le32u(&gb);
|
|
|
|
num_coeffs = bytestream2_get_byteu(&gb);
|
|
|
|
bytestream2_skip(&gb, 3); /* some constant */
|
2008-03-18 20:51:34 +01:00
|
|
|
|
2012-12-26 10:11:12 +01:00
|
|
|
if (!ctx->avctx) {
|
2008-03-18 20:51:34 +01:00
|
|
|
int i;
|
|
|
|
|
2012-12-26 10:11:12 +01:00
|
|
|
if (!(width == 160 && height == 120) &&
|
|
|
|
!(width == 320 && height == 240)) {
|
2008-03-18 20:51:34 +01:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "invalid width/height!\n");
|
2012-12-26 10:35:16 +01:00
|
|
|
return AVERROR_INVALIDDATA;
|
2008-03-18 20:51:34 +01:00
|
|
|
}
|
|
|
|
|
2017-05-18 17:46:56 +02:00
|
|
|
res = ff_set_dimensions(avctx, width, height);
|
|
|
|
if (res < 0)
|
|
|
|
return res;
|
|
|
|
|
2008-03-18 20:51:34 +01:00
|
|
|
ctx->avctx = avctx;
|
2012-10-06 12:10:34 +02:00
|
|
|
avctx->pix_fmt = AV_PIX_FMT_YUV420P;
|
2012-12-26 10:11:12 +01:00
|
|
|
for (i = 0; i < 3; i++) {
|
2016-01-27 16:19:38 +01:00
|
|
|
ctx->num_vblocks[i] = AV_CEIL_RSHIFT(height, 3 + !!i);
|
2013-05-07 16:31:02 +02:00
|
|
|
ctx->num_hblocks[i] = width >> (3 + !!i);
|
2008-03-18 20:51:34 +01:00
|
|
|
}
|
2012-12-26 10:11:12 +01:00
|
|
|
} else if (width != ctx->avctx->width || height != ctx->avctx->height) {
|
2013-03-13 21:18:34 +01:00
|
|
|
avpriv_request_sample(avctx, "Resolution changing");
|
2012-12-26 10:35:16 +01:00
|
|
|
return AVERROR_PATCHWELCOME;
|
2008-03-18 20:51:34 +01:00
|
|
|
}
|
|
|
|
|
2012-11-21 21:34:46 +01:00
|
|
|
if (is_pframe && !ctx->frames[ctx->prev_index].f->data[0]) {
|
2008-03-18 20:51:34 +01:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "decoding must start with keyframe\n");
|
2012-12-26 10:35:16 +01:00
|
|
|
return AVERROR_INVALIDDATA;
|
2008-03-18 20:51:34 +01:00
|
|
|
}
|
|
|
|
|
2012-11-21 21:34:46 +01:00
|
|
|
ff_thread_release_buffer(avctx, &ctx->frames[ctx->cur_index]);
|
|
|
|
ctx->frames[ctx->cur_index].f->pict_type = is_pframe ? AV_PICTURE_TYPE_P :
|
|
|
|
AV_PICTURE_TYPE_I;
|
|
|
|
if ((res = ff_thread_get_buffer(avctx, &ctx->frames[ctx->cur_index],
|
lavc: factorize ff_{thread_,re,}get_buffer error messages.
Coccinelle profile used:
@@
expression r, ctx, f, loglevel, str, flags;
@@
-if ((r = ff_get_buffer(ctx, f, flags)) < 0) {
- av_log(ctx, loglevel, str);
- return r;
-}
+if ((r = ff_get_buffer(ctx, f, flags)) < 0)
+ return r;
@@
expression r, ctx, f, loglevel, str;
@@
-if ((r = ff_reget_buffer(ctx, f)) < 0) {
- av_log(ctx, loglevel, str);
- return r;
-}
+if ((r = ff_reget_buffer(ctx, f)) < 0)
+ return r;
@@
expression r, ctx, f, loglevel, str, flags;
@@
-if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0) {
- av_log(ctx, loglevel, str);
- return r;
-}
+if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0)
+ return r;
...along with some manual patches for the remaining ones.
2013-03-12 08:41:53 +01:00
|
|
|
AV_GET_BUFFER_FLAG_REF)) < 0)
|
2012-12-26 10:35:16 +01:00
|
|
|
return res;
|
2008-03-18 20:51:34 +01:00
|
|
|
|
2011-03-22 22:36:57 +01:00
|
|
|
ctx->next_prev_index = ctx->cur_index;
|
|
|
|
ctx->next_cur_index = (ctx->cur_index - 1) & 15;
|
|
|
|
|
|
|
|
ff_thread_finish_setup(avctx);
|
|
|
|
|
2012-01-18 21:23:22 +01:00
|
|
|
av_fast_padded_malloc(&ctx->swap_buf, &ctx->swap_buf_size, swap_buf_size);
|
2012-12-26 10:11:12 +01:00
|
|
|
if (!ctx->swap_buf)
|
2009-04-12 11:33:38 +02:00
|
|
|
return AVERROR(ENOMEM);
|
2008-03-18 20:51:34 +01:00
|
|
|
|
2014-02-13 17:57:05 +01:00
|
|
|
ctx->bbdsp.bswap_buf(ctx->swap_buf,
|
|
|
|
(const uint32_t *) (buf + MIMIC_HEADER_SIZE),
|
|
|
|
swap_buf_size >> 2);
|
2008-03-18 20:51:34 +01:00
|
|
|
init_get_bits(&ctx->gb, ctx->swap_buf, swap_buf_size << 3);
|
|
|
|
|
2012-03-16 22:04:00 +01:00
|
|
|
res = decode(ctx, quality, num_coeffs, !is_pframe);
|
2012-11-21 21:34:46 +01:00
|
|
|
ff_thread_report_progress(&ctx->frames[ctx->cur_index], INT_MAX, 0);
|
2012-12-26 10:35:16 +01:00
|
|
|
if (res < 0) {
|
2015-11-01 04:07:46 +01:00
|
|
|
if (!(avctx->active_thread_type & FF_THREAD_FRAME))
|
2012-11-21 21:34:46 +01:00
|
|
|
ff_thread_release_buffer(avctx, &ctx->frames[ctx->cur_index]);
|
2015-11-01 04:07:46 +01:00
|
|
|
return res;
|
2008-03-18 20:51:34 +01:00
|
|
|
}
|
|
|
|
|
2012-11-21 21:34:46 +01:00
|
|
|
if ((res = av_frame_ref(data, ctx->frames[ctx->cur_index].f)) < 0)
|
|
|
|
return res;
|
2012-11-13 19:35:22 +01:00
|
|
|
*got_frame = 1;
|
2008-03-18 20:51:34 +01:00
|
|
|
|
2015-10-13 14:48:55 +02:00
|
|
|
flip_swap_frame(data);
|
|
|
|
|
2011-03-22 22:36:57 +01:00
|
|
|
ctx->prev_index = ctx->next_prev_index;
|
|
|
|
ctx->cur_index = ctx->next_cur_index;
|
2008-03-18 20:51:34 +01:00
|
|
|
|
|
|
|
return buf_size;
|
|
|
|
}
|
|
|
|
|
2021-02-25 10:50:26 +01:00
|
|
|
const AVCodec ff_mimic_decoder = {
|
2012-04-06 18:19:39 +02:00
|
|
|
.name = "mimic",
|
2013-10-03 22:57:53 +02:00
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("Mimic"),
|
2012-04-06 18:19:39 +02:00
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
2012-08-05 11:11:04 +02:00
|
|
|
.id = AV_CODEC_ID_MIMIC,
|
2012-04-06 18:19:39 +02:00
|
|
|
.priv_data_size = sizeof(MimicContext),
|
|
|
|
.init = mimic_decode_init,
|
|
|
|
.close = mimic_decode_end,
|
|
|
|
.decode = mimic_decode_frame,
|
2015-07-07 02:41:27 +02:00
|
|
|
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
|
2012-11-21 21:34:46 +01:00
|
|
|
.update_thread_context = ONLY_IF_THREADS_ENABLED(mimic_decode_update_thread_context),
|
2020-11-15 13:41:41 +01:00
|
|
|
.caps_internal = FF_CODEC_CAP_ALLOCATE_PROGRESS |
|
|
|
|
FF_CODEC_CAP_INIT_CLEANUP | FF_CODEC_CAP_INIT_THREADSAFE,
|
2008-03-18 20:51:34 +01:00
|
|
|
};
|