qmmp - Qmmp with Jyrki's patches

path: root/src/plugins/General/hal/hal.pro

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/***************************************************************************
 *   Copyright (C) 2006-2011 by Ilya Kotov                                 *
 *   forkotov02@hotmail.ru                                                 *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#include <QObject>
#include <QFile>
#include <qmmp/buffer.h>
#include <qmmp/output.h>
#include <qmmp/recycler.h>
#include "decoder_ffmpeg.h"

// callbacks

static int ffmpeg_read(void *data, uint8_t *buf, int size)
{
    DecoderFFmpeg *d = (DecoderFFmpeg*)data;
    return (int)d->input()->read((char*)buf, size);
}

static int64_t ffmpeg_seek(void *data, int64_t offset, int whence)
{
    DecoderFFmpeg *d = (DecoderFFmpeg*)data;
    int64_t absolute_pos = 0;
    /*if(d->input()->isSequential())
        return -1;*/
    switch( whence )
    {
    case AVSEEK_SIZE:
        return d->input()->size();
    case SEEK_SET:
        absolute_pos = offset;
        break;
    case SEEK_CUR:
        absolute_pos = d->input()->pos() + offset;
        break;
    case SEEK_END:
        absolute_pos = d->input()->size() - offset;
    default:
        return -1;
    }
    if(absolute_pos < 0 || absolute_pos > d->input()->size())
        return -1;
    return d->input()->seek(absolute_pos);
}

// Decoder class

DecoderFFmpeg::DecoderFFmpeg(const QString &path, QIODevice *i)
        : Decoder(i)
{
    m_bitrate = 0;
    m_skip = false;
    m_totalTime = 0;
    ic = 0;
    m_path = path;
    m_temp_pkt.size = 0;
    m_pkt.size = 0;
    m_pkt.data = 0;
    m_output_buf = 0;
    m_output_at = 0;
    m_skipBytes = 0;
    m_stream = 0;
    av_init_packet(&m_pkt);
    av_init_packet(&m_temp_pkt);
}


DecoderFFmpeg::~DecoderFFmpeg()
{
    m_bitrate = 0;
    m_temp_pkt.size = 0;
    if (ic)
        av_close_input_stream(ic);
   if(m_pkt.data)
        av_free_packet(&m_pkt);
    if(m_output_buf)
        av_free(m_output_buf);
    if(m_stream)
        av_free(m_stream);
}

bool DecoderFFmpeg::initialize()
{
    m_bitrate = 0;
    m_skip = false;
    m_totalTime = 0;
    m_seekTime = -1;
    av_register_all();

    AVProbeData  pd;
    uint8_t buf[8192 + AVPROBE_PADDING_SIZE];
    pd.filename = m_path.toLocal8Bit().constData();
    pd.buf_size = input()->peek((char*)buf, sizeof(buf) - AVPROBE_PADDING_SIZE);
    pd.buf = buf;
    if(pd.buf_size < 8192)
    {
        qWarning("DecoderFFmpeg: too small buffer size: %d bytes", pd.buf_size);
        return false;
    }
    AVInputFormat *fmt = av_probe_input_format(&pd, 1);
    if(!fmt)
    {
        qWarning("DecoderFFmpeg: usupported format");
        return false;
    }
    qDebug("DecoderFFmpeg: detected format: %s", fmt->long_name);
    qDebug("=%s=", fmt->name);

#if (LIBAVFORMAT_VERSION_INT >= ((52<<16)+(105<<8)+0))
    m_stream = avio_alloc_context(m_input_buf, INPUT_BUFFER_SIZE, 0, this, ffmpeg_read, NULL, ffmpeg_seek);
    if(!m_stream)
    {
        qWarning("DecoderFFmpeg: unable to initialize I/O callbacks");
        return false;
    }
    m_stream->seekable = !input()->isSequential();
#else
    m_stream = (ByteIOContext *)av_malloc(sizeof(ByteIOContext));
    init_put_byte(m_stream, m_input_buf, INPUT_BUFFER_SIZE, 0, this, ffmpeg_read, NULL, ffmpeg_seek);
    m_stream->is_streamed = input()->isSequential();
#endif
    m_stream->max_packet_size = INPUT_BUFFER_SIZE;

    AVFormatParameters ap;
    memset(&ap, 0, sizeof(ap));

    if(av_open_input_stream(&ic, m_stream, m_path.toLocal8Bit(), fmt, &ap) != 0)
    {
        qDebug("DecoderFFmpeg: av_open_input_stream() failed");
        return false;
    }
    AVCodec *codec;

    av_find_stream_info(ic);
    if(ic->pb)
        ic->pb->eof_reached = 0;

    ic->flags |= AVFMT_FLAG_GENPTS;
    av_read_play(ic);
    for (wma_idx = 0; wma_idx < (int)ic->nb_streams; wma_idx++)
    {
        c = ic->streams[wma_idx]->codec;
#if LIBAVCODEC_VERSION_MAJOR < 53
        if (c->codec_type == CODEC_TYPE_AUDIO)
#else
        if (c->codec_type == AVMEDIA_TYPE_AUDIO)
#endif
            break;
    }

    if (c->channels > 0)
         c->request_channels = qMin(2, c->channels);
    else
         c->request_channels = 2;

#if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(101<<8)+0))
    av_dump_format(ic,0,0,0);
#else
    dump_format(ic,0,0,0);
#endif
    codec = avcodec_find_decoder(c->codec_id);

    if (!codec)
    {
        qWarning("DecoderFFmpeg: unsupported codec for output stream");
        return false;
    }

    if (avcodec_open(c, codec) < 0)
    {
        qWarning("DecoderFFmpeg: error while opening codec for output stream");
        return false;
    }


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