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libavformat
a64.c
Go to the documentation of this file.
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/*
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* a64 muxer
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* Copyright (c) 2009 Tobias Bindhammer
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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 "
libavcodec/avcodec.h
"
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#include "
libavcodec/bytestream.h
"
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#include "
avformat.h
"
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#include "
rawenc.h
"
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static
int
a64_write_header
(
AVFormatContext
*
s
)
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{
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AVCodecContext
*avctx = s->
streams
[0]->
codec
;
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uint8_t
header
[5] = {
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0x00,
//load
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0x40,
//address
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0x00,
//mode
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0x00,
//charset_lifetime (multi only)
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0x00
//fps in 50/fps;
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};
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if
(avctx->
extradata_size
< 4) {
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av_log
(s,
AV_LOG_ERROR
,
"Missing extradata\n"
);
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return
AVERROR_INVALIDDATA
;
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}
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switch
(avctx->
codec_id
) {
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case
AV_CODEC_ID_A64_MULTI
:
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header[2] = 0x00;
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header[3] =
AV_RB32
(avctx->
extradata
+0);
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header[4] = 2;
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break
;
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case
AV_CODEC_ID_A64_MULTI5
:
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header[2] = 0x01;
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header[3] =
AV_RB32
(avctx->
extradata
+0);
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header[4] = 3;
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break
;
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default
:
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return
AVERROR_INVALIDDATA
;
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}
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avio_write
(s->
pb
, header, 2);
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return
0;
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}
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AVOutputFormat
ff_a64_muxer
= {
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.
name
=
"a64"
,
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.long_name =
NULL_IF_CONFIG_SMALL
(
"a64 - video for Commodore 64"
),
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.extensions =
"a64, A64"
,
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.video_codec =
AV_CODEC_ID_A64_MULTI
,
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.write_header =
a64_write_header
,
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.write_packet =
ff_raw_write_packet
,
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};
Generated on Sun Mar 8 2015 02:35:08 for FFmpeg by
1.8.2