mirror of
https://github.com/tuxbox-neutrino/libstb-hal.git
synced 2025-08-26 23:13:16 +02:00
83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
/*
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* linuxdvb output/writer handling.
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*
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* konfetti 2010 based on linuxdvb.c code from libeplayer2
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; 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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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <sys/uio.h>
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#include <errno.h>
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#include "misc.h"
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#include "pes.h"
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#include "writer.h"
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#define PES_AUDIO_PRIVATE_HEADER_SIZE 16 // consider maximum private header size.
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#define PES_AUDIO_HEADER_SIZE (32 + PES_AUDIO_PRIVATE_HEADER_SIZE)
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class WriterDTS : public Writer
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{
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public:
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bool Write(int fd, AVFormatContext *avfc, AVStream *stream, AVPacket *packet, int64_t &pts);
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WriterDTS();
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};
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bool WriterDTS::Write(int fd, AVFormatContext * /* avfc */, AVStream * /* stream */, AVPacket *packet, int64_t &pts)
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{
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if (fd < 0 || !packet)
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return false;
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unsigned char PesHeader[PES_AUDIO_HEADER_SIZE];
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// #define DO_BYTESWAP
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#ifdef DO_BYTESWAP
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unsigned char Data[packet->size];
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memcpy(Data, packet->data, packet->size);
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/* 16-bit byte swap all data before injecting it */
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for (i = 0; i < packet->size; i += 2) {
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unsigned char Tmp = Data[i];
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Data[i] = Data[i + 1];
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Data[i + 1] = Tmp;
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}
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#endif
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struct iovec iov[2];
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iov[0].iov_base = PesHeader;
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iov[0].iov_len = InsertPesHeader(PesHeader, packet->size, MPEG_AUDIO_PES_START_CODE /*PRIVATE_STREAM_1_PES_START_CODE */ , pts, 0);
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#ifdef DO_BYTESPWAP
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iov[1].iov_base = Data;
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#else
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iov[1].iov_base = packet->data;
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#endif
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iov[1].iov_len = packet->size;
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return writev(fd, iov, 2) > -1;
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}
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WriterDTS::WriterDTS()
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{
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Register(this, AV_CODEC_ID_DTS, AUDIO_ENCODING_DTS);
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}
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static WriterDTS writer_dts __attribute__ ((init_priority (300)));
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