444e9874a7
* commit 'def97856de6021965db86c25a732d78689bd6bb0': lavc: AV-prefix all codec capabilities Conflicts: cmdutils.c ffmpeg.c ffplay.c libavcodec/8svx.c libavcodec/aacenc.c libavcodec/ac3dec.c libavcodec/adpcm.c libavcodec/alac.c libavcodec/atrac3plusdec.c libavcodec/bink.c libavcodec/dnxhddec.c libavcodec/dvdec.c libavcodec/dvenc.c libavcodec/ffv1dec.c libavcodec/ffv1enc.c libavcodec/fic.c libavcodec/flacdec.c libavcodec/flacenc.c libavcodec/flvdec.c libavcodec/fraps.c libavcodec/frwu.c libavcodec/gifdec.c libavcodec/h261dec.c libavcodec/hevc.c libavcodec/iff.c libavcodec/imc.c libavcodec/libopenjpegdec.c libavcodec/libvo-aacenc.c libavcodec/libvorbisenc.c libavcodec/libvpxdec.c libavcodec/libvpxenc.c libavcodec/libx264.c libavcodec/mjpegbdec.c libavcodec/mjpegdec.c libavcodec/mpegaudiodec_float.c libavcodec/msmpeg4dec.c libavcodec/mxpegdec.c libavcodec/nvenc_h264.c libavcodec/nvenc_hevc.c libavcodec/pngdec.c libavcodec/qpeg.c libavcodec/ra288.c libavcodec/rv10.c libavcodec/s302m.c libavcodec/sp5xdec.c libavcodec/takdec.c libavcodec/tiff.c libavcodec/tta.c libavcodec/utils.c libavcodec/v210dec.c libavcodec/vp6.c libavcodec/vp9.c libavcodec/wavpack.c libavcodec/yop.c Merged-by: Michael Niedermayer <michael@niedermayer.cc>
98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/*
|
|
* 8088flex TMV video decoder
|
|
* Copyright (c) 2009 Daniel Verkamp <daniel at drv.nu>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* 8088flex TMV video decoder
|
|
* @author Daniel Verkamp
|
|
* @see http://www.oldskool.org/pc/8088_Corruption
|
|
*/
|
|
|
|
#include <string.h>
|
|
|
|
#include "avcodec.h"
|
|
#include "internal.h"
|
|
#include "libavutil/internal.h"
|
|
#include "libavutil/xga_font_data.h"
|
|
|
|
#include "cga_data.h"
|
|
|
|
static int tmv_decode_frame(AVCodecContext *avctx, void *data,
|
|
int *got_frame, AVPacket *avpkt)
|
|
{
|
|
AVFrame *frame = data;
|
|
const uint8_t *src = avpkt->data;
|
|
uint8_t *dst;
|
|
unsigned char_cols = avctx->width >> 3;
|
|
unsigned char_rows = avctx->height >> 3;
|
|
unsigned x, y, fg, bg, c;
|
|
int ret;
|
|
|
|
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
|
|
return ret;
|
|
|
|
if (avpkt->size < 2*char_rows*char_cols) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Input buffer too small, truncated sample?\n");
|
|
*got_frame = 0;
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
frame->pict_type = AV_PICTURE_TYPE_I;
|
|
frame->key_frame = 1;
|
|
dst = frame->data[0];
|
|
|
|
frame->palette_has_changed = 1;
|
|
memcpy(frame->data[1], ff_cga_palette, 16 * 4);
|
|
memset(frame->data[1] + 16 * 4, 0, AVPALETTE_SIZE - 16 * 4);
|
|
|
|
for (y = 0; y < char_rows; y++) {
|
|
for (x = 0; x < char_cols; x++) {
|
|
c = *src++;
|
|
bg = *src >> 4;
|
|
fg = *src++ & 0xF;
|
|
ff_draw_pc_font(dst + x * 8, frame->linesize[0],
|
|
avpriv_cga_font, 8, c, fg, bg);
|
|
}
|
|
dst += frame->linesize[0] * 8;
|
|
}
|
|
|
|
*got_frame = 1;
|
|
|
|
return avpkt->size;
|
|
}
|
|
|
|
static av_cold int tmv_decode_init(AVCodecContext *avctx)
|
|
{
|
|
avctx->pix_fmt = AV_PIX_FMT_PAL8;
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_tmv_decoder = {
|
|
.name = "tmv",
|
|
.long_name = NULL_IF_CONFIG_SMALL("8088flex TMV"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_TMV,
|
|
.init = tmv_decode_init,
|
|
.decode = tmv_decode_frame,
|
|
.capabilities = AV_CODEC_CAP_DR1,
|
|
};
|