/
nuppeldecoder.cpp
1404 lines (1181 loc) · 41.6 KB
/
nuppeldecoder.cpp
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// C headers
#include <cerrno>
#include <cassert>
#include <cstring>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
// C++ headers
#include <algorithm>
#include <iostream>
using namespace std;
// Qt headers
#include <QMutex>
// MythTV headers
#include "mythconfig.h"
#include "nuppeldecoder.h"
#include "mythplayer.h"
#include "remoteencoder.h"
#include "mythlogging.h"
#include "myth_imgconvert.h"
#include "programinfo.h"
#include "audiooutpututil.h"
#include "minilzo.h"
extern "C" {
#if HAVE_BIGENDIAN
#include "bswap.h"
#endif
#include "libavutil/opt.h"
}
#define LOC QString("NVD: ")
NuppelDecoder::NuppelDecoder(MythPlayer *parent,
const ProgramInfo &pginfo)
: DecoderBase(parent, pginfo),
rtjd(0), video_width(0), video_height(0), video_size(0),
video_frame_rate(0.0f), audio_samplerate(44100),
#if HAVE_BIGENDIAN
audio_bits_per_sample(0),
#endif
ffmpeg_extradatasize(0), ffmpeg_extradata(0), usingextradata(false),
disablevideo(false), totalLength(0), totalFrames(0), effdsp(0),
directframe(NULL), decoded_video_frame(NULL),
mpa_vidcodec(0), mpa_vidctx(0), mpa_audcodec(0), mpa_audctx(0),
directrendering(false),
lastct('1'), strm_buf(0), strm(0), buf(0), buf2(0),
videosizetotal(0), videoframesread(0), setreadahead(false)
{
// initialize structures
memset(&fileheader, 0, sizeof(rtfileheader));
memset(&frameheader, 0, sizeof(rtframeheader));
memset(&extradata, 0, sizeof(extendeddata));
memset(&tmppicture, 0, sizeof(AVPicture));
planes[0] = planes[1] = planes[2] = 0;
m_audioSamples = (uint8_t *)av_mallocz(AVCODEC_MAX_AUDIO_FRAME_SIZE *
sizeof(int32_t));
// set parent class variables
positionMapType = MARK_KEYFRAME;
lastKey = 0;
framesPlayed = 0;
getrawframes = false;
getrawvideo = false;
rtjd = new RTjpeg();
int format = RTJ_YUV420;
rtjd->SetFormat(&format);
{
QMutexLocker locker(avcodeclock);
avcodec_register_all();
}
if (lzo_init() != LZO_E_OK)
{
LOG(VB_GENERAL, LOG_ERR, "NuppelDecoder: lzo_init() failed, aborting");
errored = true;
return;
}
}
NuppelDecoder::~NuppelDecoder()
{
if (rtjd)
delete rtjd;
if (ffmpeg_extradata)
delete [] ffmpeg_extradata;
if (buf)
delete [] buf;
if (buf2)
delete [] buf2;
if (strm_buf)
delete [] strm_buf;
av_free(m_audioSamples);
while (!StoredData.empty())
{
delete StoredData.front();
StoredData.pop_front();
}
CloseAVCodecVideo();
CloseAVCodecAudio();
}
bool NuppelDecoder::CanHandle(char testbuf[kDecoderProbeBufferSize],
int)
{
if (!strncmp(testbuf, "NuppelVideo", 11) ||
!strncmp(testbuf, "MythTVVideo", 11))
return true;
return false;
}
MythCodecID NuppelDecoder::GetVideoCodecID(void) const
{
MythCodecID value = kCodec_NONE;
if (mpa_vidcodec)
{
if (QString(mpa_vidcodec->name) == "mpeg4")
value = kCodec_NUV_MPEG4;
}
else if (usingextradata && extradata.video_fourcc == FOURCC_DIVX)
value = kCodec_NUV_MPEG4;
else
value = kCodec_NUV_RTjpeg;
return (value);
}
QString NuppelDecoder::GetRawEncodingType(void)
{
if (mpa_vidctx)
return ff_codec_id_string(mpa_vidctx->codec_id);
return QString();
}
bool NuppelDecoder::ReadFileheader(struct rtfileheader *fh)
{
if (ringBuffer->Read(fh, FILEHEADERSIZE) != FILEHEADERSIZE)
return false;
#if HAVE_BIGENDIAN
fh->width = bswap_32(fh->width);
fh->height = bswap_32(fh->height);
fh->desiredwidth = bswap_32(fh->desiredwidth);
fh->desiredheight = bswap_32(fh->desiredheight);
fh->aspect = bswap_dbl(fh->aspect);
fh->fps = bswap_dbl(fh->fps);
fh->videoblocks = bswap_32(fh->videoblocks);
fh->audioblocks = bswap_32(fh->audioblocks);
fh->textsblocks = bswap_32(fh->textsblocks);
fh->keyframedist = bswap_32(fh->keyframedist);
#endif
return true;
}
bool NuppelDecoder::ReadFrameheader(struct rtframeheader *fh)
{
if (ringBuffer->Read(fh, FRAMEHEADERSIZE) != FRAMEHEADERSIZE)
return false;
#if HAVE_BIGENDIAN
fh->timecode = bswap_32(fh->timecode);
fh->packetlength = bswap_32(fh->packetlength);
#endif
return true;
}
int NuppelDecoder::OpenFile(RingBuffer *rbuffer, bool novideo,
char testbuf[kDecoderProbeBufferSize],
int)
{
(void)testbuf;
ringBuffer = rbuffer;
disablevideo = novideo;
tracks[kTrackTypeVideo].clear();
StreamInfo si(0, 0, 0, 0, 0);
tracks[kTrackTypeVideo].push_back(si);
selectedTrack[kTrackTypeVideo] = si;
struct rtframeheader frameheader;
long long startpos = 0;
int foundit = 0;
char *space;
if (!ReadFileheader(&fileheader))
{
LOG(VB_GENERAL, LOG_ERR,
QString("Error reading file: %1").arg(ringBuffer->GetFilename()));
return -1;
}
while ((QString(fileheader.finfo) != "NuppelVideo") &&
(QString(fileheader.finfo) != "MythTVVideo"))
{
ringBuffer->Seek(startpos, SEEK_SET);
char dummychar;
ringBuffer->Read(&dummychar, 1);
startpos = ringBuffer->GetReadPosition();
if (!ReadFileheader(&fileheader))
{
LOG(VB_GENERAL, LOG_ERR, QString("Error reading file: %1")
.arg(ringBuffer->GetFilename()));
return -1;
}
if (startpos > 20000)
{
LOG(VB_GENERAL, LOG_ERR, QString("Bad file: '%1'")
.arg(ringBuffer->GetFilename()));
return -1;
}
}
if (fileheader.aspect > .999 && fileheader.aspect < 1.001)
fileheader.aspect = 4.0 / 3;
current_aspect = fileheader.aspect;
GetPlayer()->SetKeyframeDistance(fileheader.keyframedist);
GetPlayer()->SetVideoParams(fileheader.width, fileheader.height,
fileheader.fps);
video_width = fileheader.width;
video_height = fileheader.height;
video_size = video_height * video_width * 3 / 2;
keyframedist = fileheader.keyframedist;
video_frame_rate = fileheader.fps;
if (!ReadFrameheader(&frameheader))
{
LOG(VB_GENERAL, LOG_ERR, "File not big enough for a header");
return -1;
}
if (frameheader.frametype != 'D')
{
LOG(VB_GENERAL, LOG_ERR, "Illegal file format");
return -1;
}
space = new char[video_size];
if (frameheader.comptype == 'F')
{
ffmpeg_extradatasize = frameheader.packetlength;
if (ffmpeg_extradatasize > 0)
{
ffmpeg_extradata = new uint8_t[ffmpeg_extradatasize];
if (frameheader.packetlength != ringBuffer->Read(ffmpeg_extradata,
frameheader.packetlength))
{
LOG(VB_GENERAL, LOG_ERR,
"File not big enough for first frame data");
delete [] ffmpeg_extradata;
ffmpeg_extradata = NULL;
delete [] space;
return -1;
}
}
}
else
{
if (frameheader.packetlength != ringBuffer->Read(space,
frameheader.packetlength))
{
LOG(VB_GENERAL, LOG_ERR,
"File not big enough for first frame data");
delete [] space;
return -1;
}
}
if ((video_height & 1) == 1)
{
video_height--;
LOG(VB_GENERAL, LOG_ERR,
QString("Incompatible video height, reducing to %1")
.arg( video_height));
}
startpos = ringBuffer->GetReadPosition();
ReadFrameheader(&frameheader);
if (frameheader.frametype == 'X')
{
if (frameheader.packetlength != EXTENDEDSIZE)
{
LOG(VB_GENERAL, LOG_ERR, "Corrupt file. Bad extended frame.");
}
else
{
ringBuffer->Read(&extradata, frameheader.packetlength);
#if HAVE_BIGENDIAN
struct extendeddata *ed = &extradata;
ed->version = bswap_32(ed->version);
ed->video_fourcc = bswap_32(ed->video_fourcc);
ed->audio_fourcc = bswap_32(ed->audio_fourcc);
ed->audio_sample_rate = bswap_32(ed->audio_sample_rate);
ed->audio_bits_per_sample = bswap_32(ed->audio_bits_per_sample);
ed->audio_channels = bswap_32(ed->audio_channels);
ed->audio_compression_ratio = bswap_32(ed->audio_compression_ratio);
ed->audio_quality = bswap_32(ed->audio_quality);
ed->rtjpeg_quality = bswap_32(ed->rtjpeg_quality);
ed->rtjpeg_luma_filter = bswap_32(ed->rtjpeg_luma_filter);
ed->rtjpeg_chroma_filter = bswap_32(ed->rtjpeg_chroma_filter);
ed->lavc_bitrate = bswap_32(ed->lavc_bitrate);
ed->lavc_qmin = bswap_32(ed->lavc_qmin);
ed->lavc_qmax = bswap_32(ed->lavc_qmax);
ed->lavc_maxqdiff = bswap_32(ed->lavc_maxqdiff);
ed->seektable_offset = bswap_64(ed->seektable_offset);
ed->keyframeadjust_offset = bswap_64(ed->keyframeadjust_offset);
#endif
usingextradata = true;
ReadFrameheader(&frameheader);
}
}
if (usingextradata && extradata.seektable_offset > 0)
{
long long currentpos = ringBuffer->GetReadPosition();
struct rtframeheader seek_frameheader;
int seekret = ringBuffer->Seek(extradata.seektable_offset, SEEK_SET);
if (seekret == -1)
{
LOG(VB_GENERAL, LOG_ERR,
QString("NuppelDecoder::OpenFile(): seek error (%1)")
.arg(strerror(errno)));
}
ReadFrameheader(&seek_frameheader);
if (seek_frameheader.frametype != 'Q')
{
LOG(VB_GENERAL, LOG_ERR,
QString("Invalid seektable (frametype %1)")
.arg((int)seek_frameheader.frametype));
}
else
{
if (seek_frameheader.packetlength > 0)
{
char *seekbuf = new char[seek_frameheader.packetlength];
ringBuffer->Read(seekbuf, seek_frameheader.packetlength);
int numentries = seek_frameheader.packetlength /
sizeof(struct seektable_entry);
struct seektable_entry ste;
int offset = 0;
ste.file_offset = 0;
ste.keyframe_number = 0;
m_positionMapLock.lock();
m_positionMap.clear();
m_positionMap.reserve(numentries);
for (int z = 0; z < numentries; z++)
{
memcpy(&ste, seekbuf + offset,
sizeof(struct seektable_entry));
#if HAVE_BIGENDIAN
ste.file_offset = bswap_64(ste.file_offset);
ste.keyframe_number = bswap_32(ste.keyframe_number);
#endif
offset += sizeof(struct seektable_entry);
PosMapEntry e = {ste.keyframe_number,
ste.keyframe_number * keyframedist,
ste.file_offset};
m_positionMap.push_back(e);
uint64_t frame_num = ste.keyframe_number * keyframedist;
m_frameToDurMap[frame_num] =
frame_num * 1000 / video_frame_rate;
m_durToFrameMap[m_frameToDurMap[frame_num]] = frame_num;
}
hasFullPositionMap = true;
totalLength = (int)((ste.keyframe_number * keyframedist * 1.0) /
video_frame_rate);
totalFrames = (long long)ste.keyframe_number * keyframedist;
m_positionMapLock.unlock();
GetPlayer()->SetFileLength(totalLength, totalFrames);
delete [] seekbuf;
}
else
LOG(VB_GENERAL, LOG_ERR, "0 length seek table");
}
ringBuffer->Seek(currentpos, SEEK_SET);
}
if (usingextradata && extradata.keyframeadjust_offset > 0 &&
hasFullPositionMap)
{
long long currentpos = ringBuffer->GetReadPosition();
struct rtframeheader kfa_frameheader;
int kfa_ret = ringBuffer->Seek(extradata.keyframeadjust_offset,
SEEK_SET);
if (kfa_ret == -1)
{
LOG(VB_GENERAL, LOG_ERR,
QString("NuppelDecoder::OpenFile(): keyframeadjust (%1)")
.arg(strerror(errno)));
}
ringBuffer->Read(&kfa_frameheader, FRAMEHEADERSIZE);
if (kfa_frameheader.frametype != 'K')
{
LOG(VB_GENERAL, LOG_ERR,
QString("Invalid key frame adjust table (frametype %1)")
.arg((int)kfa_frameheader.frametype));
}
else
{
if (kfa_frameheader.packetlength > 0)
{
char *kfa_buf = new char[kfa_frameheader.packetlength];
ringBuffer->Read(kfa_buf, kfa_frameheader.packetlength);
int numentries = kfa_frameheader.packetlength /
sizeof(struct kfatable_entry);
struct kfatable_entry kfate;
int offset = 0;
int adjust = 0;
QMap<long long, int> keyFrameAdjustMap;
for (int z = 0; z < numentries; z++)
{
memcpy(&kfate, kfa_buf + offset,
sizeof(struct kfatable_entry));
#if HAVE_BIGENDIAN
kfate.adjust = bswap_32(kfate.adjust);
kfate.keyframe_number = bswap_32(kfate.keyframe_number);
#endif
offset += sizeof(struct kfatable_entry);
keyFrameAdjustMap[kfate.keyframe_number] = kfate.adjust;
adjust += kfate.adjust;
}
hasKeyFrameAdjustTable = true;
totalLength -= (int)(adjust / video_frame_rate);
totalFrames -= adjust;
GetPlayer()->SetFileLength(totalLength, totalFrames);
adjust = 0;
{
QMutexLocker locker(&m_positionMapLock);
for (uint i = 0; i < m_positionMap.size(); i++)
{
long long adj = m_positionMap[i].adjFrame;
if (keyFrameAdjustMap.contains(adj))
adjust += keyFrameAdjustMap[adj];
m_positionMap[i].adjFrame -= adjust;
}
}
delete [] kfa_buf;
}
else
LOG(VB_GENERAL, LOG_ERR, "0 length key frame adjust table");
}
ringBuffer->Seek(currentpos, SEEK_SET);
}
while (frameheader.frametype != 'A' && frameheader.frametype != 'V' &&
frameheader.frametype != 'S' && frameheader.frametype != 'T' &&
frameheader.frametype != 'R')
{
ringBuffer->Seek(startpos, SEEK_SET);
char dummychar;
ringBuffer->Read(&dummychar, 1);
startpos = ringBuffer->GetReadPosition();
if (!ReadFrameheader(&frameheader))
{
delete [] space;
return -1;
}
if (startpos > 20000)
{
delete [] space;
return -1;
}
}
foundit = 0;
effdsp = audio_samplerate * 100;
m_audio->SetEffDsp(effdsp);
if (usingextradata)
{
effdsp = extradata.audio_sample_rate * 100;
m_audio->SetEffDsp(effdsp);
audio_samplerate = extradata.audio_sample_rate;
#if HAVE_BIGENDIAN
// Why only if using extradata?
audio_bits_per_sample = extradata.audio_bits_per_sample;
#endif
AudioFormat format = FORMAT_NONE;
switch (extradata.audio_bits_per_sample)
{
case 8: format = FORMAT_U8; break;
case 16: format = FORMAT_S16; break;
case 24: format = FORMAT_S24; break;
case 32: format = FORMAT_S32; break;
}
m_audio->SetAudioParams(format, extradata.audio_channels,
extradata.audio_channels,
AV_CODEC_ID_NONE, extradata.audio_sample_rate,
false /* AC3/DTS pass through */);
m_audio->ReinitAudio();
foundit = 1;
}
while (!foundit)
{
if (frameheader.frametype == 'S')
{
if (frameheader.comptype == 'A')
{
effdsp = frameheader.timecode;
if (effdsp > 0)
{
m_audio->SetEffDsp(effdsp);
foundit = 1;
continue;
}
}
}
if (frameheader.frametype != 'R' && frameheader.packetlength != 0)
{
if (frameheader.packetlength != ringBuffer->Read(space,
frameheader.packetlength))
{
foundit = 1;
continue;
}
}
long long startpos2 = ringBuffer->GetReadPosition();
foundit = !ReadFrameheader(&frameheader);
bool framesearch = false;
while (frameheader.frametype != 'A' && frameheader.frametype != 'V' &&
frameheader.frametype != 'S' && frameheader.frametype != 'T' &&
frameheader.frametype != 'R' && frameheader.frametype != 'X')
{
if (!framesearch)
LOG(VB_GENERAL, LOG_INFO, "Searching for frame header.");
framesearch = true;
ringBuffer->Seek(startpos2, SEEK_SET);
char dummychar;
ringBuffer->Read(&dummychar, 1);
startpos2 = ringBuffer->GetReadPosition();
foundit = !ReadFrameheader(&frameheader);
if (foundit)
break;
}
}
delete [] space;
setreadahead = false;
// mpeg4 encodes are small enough that this shouldn't matter
if (usingextradata && extradata.video_fourcc == FOURCC_DIVX)
setreadahead = true;
bitrate = 0;
unsigned min_bitrate = 1000;
if (usingextradata && extradata.video_fourcc == FOURCC_DIVX)
{
// Use video bitrate, ignore negligible audio bitrate
bitrate = extradata.lavc_bitrate / 1000;
}
bitrate = max(bitrate, min_bitrate); // set minimum 1 Mb/s to be safe
LOG(VB_PLAYBACK, LOG_INFO,
QString("Setting bitrate to %1 Kb/s").arg(bitrate));
ringBuffer->UpdateRawBitrate(GetRawBitrate());
videosizetotal = 0;
videoframesread = 0;
ringBuffer->Seek(startpos, SEEK_SET);
buf = new unsigned char[video_size];
strm_buf = new unsigned char[video_size * 2 + 16];
strm = (unsigned char*) (((long)strm_buf + 15) & ~0xf);
if (hasFullPositionMap)
return 1;
if (SyncPositionMap())
return 1;
return 0;
}
int get_nuppel_buffer(struct AVCodecContext *c, AVFrame *pic)
{
NuppelDecoder *nd = (NuppelDecoder *)(c->opaque);
int i;
for (i = 0; i < 3; i++)
{
pic->data[i] = nd->directframe->buf + nd->directframe->offsets[i];
pic->linesize[i] = nd->directframe->pitches[i];
}
pic->opaque = nd->directframe;
pic->type = FF_BUFFER_TYPE_USER;
return 1;
}
void release_nuppel_buffer(struct AVCodecContext *c, AVFrame *pic)
{
(void)c;
assert(pic->type == FF_BUFFER_TYPE_USER);
NuppelDecoder *nd = (NuppelDecoder *)(c->opaque);
if (nd && nd->GetPlayer())
nd->GetPlayer()->DeLimboFrame((VideoFrame*)pic->opaque);
int i;
for (i = 0; i < 4; i++)
pic->data[i] = NULL;
}
bool NuppelDecoder::InitAVCodecVideo(int codec)
{
if (mpa_vidcodec)
CloseAVCodecVideo();
if (usingextradata)
{
switch(extradata.video_fourcc)
{
case FOURCC_DIVX: codec = AV_CODEC_ID_MPEG4; break;
case FOURCC_WMV1: codec = AV_CODEC_ID_WMV1; break;
case FOURCC_DIV3: codec = AV_CODEC_ID_MSMPEG4V3; break;
case FOURCC_MP42: codec = AV_CODEC_ID_MSMPEG4V2; break;
case FOURCC_MPG4: codec = AV_CODEC_ID_MSMPEG4V1; break;
case FOURCC_MJPG: codec = AV_CODEC_ID_MJPEG; break;
case FOURCC_H263: codec = AV_CODEC_ID_H263; break;
case FOURCC_H264: codec = AV_CODEC_ID_H264; break;
case FOURCC_I263: codec = AV_CODEC_ID_H263I; break;
case FOURCC_MPEG: codec = AV_CODEC_ID_MPEG1VIDEO; break;
case FOURCC_MPG2: codec = AV_CODEC_ID_MPEG2VIDEO; break;
case FOURCC_HFYU: codec = AV_CODEC_ID_HUFFYUV; break;
default: codec = -1;
}
}
mpa_vidcodec = avcodec_find_decoder((enum CodecID)codec);
if (!mpa_vidcodec)
{
if (usingextradata)
LOG(VB_GENERAL, LOG_ERR,
QString("couldn't find video codec (%1)")
.arg(extradata.video_fourcc));
else
LOG(VB_GENERAL, LOG_ERR, "couldn't find video codec");
return false;
}
if (mpa_vidcodec->capabilities & CODEC_CAP_DR1 && codec != AV_CODEC_ID_MJPEG)
directrendering = true;
if (mpa_vidctx)
av_free(mpa_vidctx);
mpa_vidctx = avcodec_alloc_context3(NULL);
mpa_vidctx->codec_id = (enum CodecID)codec;
mpa_vidctx->codec_type = AVMEDIA_TYPE_VIDEO;
mpa_vidctx->width = video_width;
mpa_vidctx->height = video_height;
mpa_vidctx->err_recognition = AV_EF_CRCCHECK | AV_EF_BITSTREAM |
AV_EF_BUFFER;
mpa_vidctx->bits_per_coded_sample = 12;
if (directrendering)
{
mpa_vidctx->flags |= CODEC_FLAG_EMU_EDGE;
mpa_vidctx->draw_horiz_band = NULL;
mpa_vidctx->get_buffer = get_nuppel_buffer;
mpa_vidctx->release_buffer = release_nuppel_buffer;
mpa_vidctx->opaque = (void *)this;
}
if (ffmpeg_extradatasize > 0)
{
av_opt_set_int(mpa_vidctx, "extern_huff", 1, 0);
mpa_vidctx->extradata = ffmpeg_extradata;
mpa_vidctx->extradata_size = ffmpeg_extradatasize;
}
QMutexLocker locker(avcodeclock);
if (avcodec_open2(mpa_vidctx, mpa_vidcodec, NULL) < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "Couldn't find lavc video codec");
return false;
}
return true;
}
void NuppelDecoder::CloseAVCodecVideo(void)
{
QMutexLocker locker(avcodeclock);
if (mpa_vidcodec)
{
avcodec_close(mpa_vidctx);
if (mpa_vidctx)
{
av_free(mpa_vidctx);
mpa_vidctx = NULL;
}
}
}
bool NuppelDecoder::InitAVCodecAudio(int codec)
{
if (mpa_audcodec)
CloseAVCodecAudio();
if (usingextradata)
{
switch(extradata.audio_fourcc)
{
case FOURCC_LAME: codec = AV_CODEC_ID_MP3; break;
case FOURCC_AC3 : codec = AV_CODEC_ID_AC3; break;
default: codec = -1;
}
}
mpa_audcodec = avcodec_find_decoder((enum CodecID)codec);
if (!mpa_audcodec)
{
if (usingextradata)
LOG(VB_GENERAL, LOG_ERR, QString("couldn't find audio codec (%1)")
.arg(extradata.audio_fourcc));
else
LOG(VB_GENERAL, LOG_ERR, "couldn't find audio codec");
return false;
}
if (mpa_audctx)
av_free(mpa_audctx);
mpa_audctx = avcodec_alloc_context3(NULL);
mpa_audctx->codec_id = (enum CodecID)codec;
mpa_audctx->codec_type = AVMEDIA_TYPE_AUDIO;
QMutexLocker locker(avcodeclock);
if (avcodec_open2(mpa_audctx, mpa_audcodec, NULL) < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "Couldn't find lavc audio codec");
return false;
}
return true;
}
void NuppelDecoder::CloseAVCodecAudio(void)
{
QMutexLocker locker(avcodeclock);
if (mpa_audcodec)
{
avcodec_close(mpa_audctx);
if (mpa_audctx)
{
av_free(mpa_audctx);
mpa_audctx = NULL;
}
}
}
static void CopyToVideo(unsigned char *buf, int video_width,
int video_height, VideoFrame *frame)
{
uint ysize = video_width * video_height;
uint uvsize = ysize >> 2;
unsigned char *planes[3];
planes[0] = buf;
planes[1] = planes[0] + ysize;
planes[2] = planes[1] + uvsize;
memcpy(frame->buf + frame->offsets[0], planes[0], ysize);
memcpy(frame->buf + frame->offsets[1], planes[1], uvsize);
memcpy(frame->buf + frame->offsets[2], planes[2], uvsize);
}
bool NuppelDecoder::DecodeFrame(struct rtframeheader *frameheader,
unsigned char *lstrm, VideoFrame *frame)
{
int r;
lzo_uint out_len;
int compoff = 0;
AVPacket pkt;
unsigned char *outbuf = frame->buf;
directframe = frame;
if (!buf2)
{
buf2 = new unsigned char[video_size + 64];
planes[0] = buf;
planes[1] = planes[0] + video_width * video_height;
planes[2] = planes[1] + (video_width * video_height) / 4;
}
if (frameheader->comptype == 'N') {
memset(outbuf, 0, video_width * video_height);
memset(outbuf + video_width * video_height, 127,
(video_width * video_height)/2);
return true;
}
if (frameheader->comptype == 'L') {
switch(lastct) {
case '0': case '3':
CopyToVideo(buf2, video_width, video_height, frame);
break;
case '1': case '2':
default:
CopyToVideo(buf, video_width, video_height, frame);
break;
}
return true;
}
compoff = 1;
if (frameheader->comptype == '2' || frameheader->comptype == '3')
compoff=0;
lastct = frameheader->comptype;
if (!compoff)
{
r = lzo1x_decompress(lstrm, frameheader->packetlength, buf2, &out_len,
NULL);
if (r != LZO_E_OK)
{
LOG(VB_GENERAL, LOG_ERR, "minilzo: can't decompress illegal data");
}
}
if (frameheader->comptype == '0')
{
CopyToVideo(lstrm, video_width, video_height, frame);
return true;
}
if (frameheader->comptype == '3')
{
CopyToVideo(buf2, video_width, video_height, frame);
return true;
}
if (frameheader->comptype == '2' || frameheader->comptype == '1')
{
if (compoff)
rtjd->Decompress((int8_t*)lstrm, planes);
else
rtjd->Decompress((int8_t*)buf2, planes);
CopyToVideo(buf, video_width, video_height, frame);
}
else
{
if (!mpa_vidcodec)
InitAVCodecVideo(frameheader->comptype - '3');
AVFrame mpa_pic;
av_init_packet(&pkt);
pkt.data = lstrm;
pkt.size = frameheader->packetlength;
{
QMutexLocker locker(avcodeclock);
// if directrendering, writes into buf
int gotpicture = 0;
int ret = avcodec_decode_video2(mpa_vidctx, &mpa_pic, &gotpicture,
&pkt);
directframe = NULL;
if (ret < 0)
{
LOG(VB_PLAYBACK, LOG_ERR, LOC +
QString("avcodec_decode_video returned: %1").arg(ret));
return false;
}
else if (!gotpicture)
{
return false;
}
}
/* XXX: Broken
if (mpa_pic->qscale_table != NULL && mpa_pic->qstride > 0)
{
int tablesize = mpa_pic->qstride * ((video_height + 15) / 16);
if (frame->qstride != mpa_pic->qstride ||
frame->qscale_table == NULL)
{
frame->qstride = mpa_pic->qstride;
if (frame->qscale_table)
delete [] frame->qscale_table;
frame->qscale_table = new unsigned char[tablesize];
}
memcpy(frame->qscale_table, mpa_pic->qscale_table, tablesize);
}
*/
if (directrendering)
return true;
avpicture_fill(&tmppicture, outbuf, PIX_FMT_YUV420P, video_width,
video_height);
myth_sws_img_convert(
&tmppicture, PIX_FMT_YUV420P, (AVPicture *)&mpa_pic,
mpa_vidctx->pix_fmt, video_width, video_height);
}
return true;
}
bool NuppelDecoder::isValidFrametype(char type)
{
switch (type)
{
case 'A': case 'V': case 'S': case 'T': case 'R': case 'X':
case 'M': case 'D': case 'Q': case 'K':
return true;
default:
return false;
}
return false;
}
void NuppelDecoder::StoreRawData(unsigned char *newstrm)
{
unsigned char *strmcpy;
if (newstrm)
{
strmcpy = new unsigned char[frameheader.packetlength];
memcpy(strmcpy, newstrm, frameheader.packetlength);
}
else
strmcpy = NULL;
StoredData.push_back(new RawDataList(frameheader, strmcpy));
}