static bool_t SpeexHeader(ogg* p, oggstream* s, const char* Data, int Length )
{
if (Length<80 && strncmp(Data,"Speex ",8)!=0)
return 0;
PacketFormatClear(&s->Stream.Format);
s->Stream.Format.Type = PACKET_AUDIO;
s->Stream.Format.Format.Audio.Format = AUDIOFMT_SPEEX;
s->Stream.Format.Format.Audio.Channels = INT32LE(*(int32_t*)(Data+48));
s->Stream.Format.ByteRate = INT32LE(*(int32_t*)(Data+52))/8;
s->Stream.Format.Format.Audio.SampleRate = INT32LE(*(int32_t*)(Data+36));
s->MediaRateDen = TICKSPERSEC;
s->MediaRateNum = s->Stream.Format.Format.Audio.SampleRate;
s->Native = 1;
if (PacketFormatExtra(&s->Stream.Format,Length))
memcpy(s->Stream.Format.Extra,Data,s->Stream.Format.ExtraLength);
return 1;
}
static int UpdateInput( ffmpeg_video* p )
{
if (p->Context)
avcodec_close(p->Context);
av_free(p->Context);
av_free(p->Picture);
p->Context = NULL;
p->Picture = NULL;
BufferClear(&p->Buffer);
if (p->Codec.In.Format.Type == PACKET_VIDEO)
{
AVCodec *Codec;
const codecinfo *i;
for (i=Info;i->Id;++i)
if (i->Id == p->Codec.Node.Class)
break;
if (!i->Id)
return ERR_INVALID_DATA;
Codec = avcodec_find_decoder(i->CodecId);
if (!Codec)
return ERR_INVALID_DATA;
p->Context = avcodec_alloc_context();
p->Picture = avcodec_alloc_frame();
if (!p->Context || !p->Picture)
return ERR_OUT_OF_MEMORY;
if ((p->Codec.In.Format.Format.Video.Pixel.Flags & PF_FRAGMENTED) &&
(Codec->capabilities & CODEC_CAP_TRUNCATED))
p->Context->flags|= CODEC_FLAG_TRUNCATED;
UpdateSettings(p);
p->Context->palctrl = NULL;
p->Context->bit_rate = 0;
p->Context->extradata = p->Codec.In.Format.Extra;
p->Context->extradata_size = p->Codec.In.Format.ExtraLength;
p->Context->width = p->Codec.In.Format.Format.Video.Width;
p->Context->height = p->Codec.In.Format.Format.Video.Height;
p->Context->bits_per_coded_sample = p->Codec.In.Format.Format.Video.Pixel.BitCount;
if (p->Codec.In.Format.Format.Video.Pixel.Palette &&
p->Codec.In.Format.Format.Video.Pixel.BitCount<=8)
{
int i,n = 1 << p->Codec.In.Format.Format.Video.Pixel.BitCount;
for (i=0;i<n;++i)
p->Palette.palette[i] = INT32LE(p->Codec.In.Format.Format.Video.Pixel.Palette[i].v);
p->Palette.palette_changed = 1;
p->Context->palctrl = &p->Palette;
}
p->CodecId = i->CodecId;
if (avcodec_open(p->Context,Codec)<0)
{
// avoid calling avcodec_close at next UpdateInput
av_free(p->Context);
p->Context = NULL;
return ERR_INVALID_DATA;
}
if (!BuildOutputFormat(p))
return ERR_INVALID_DATA;
p->SkipToKey = 1;
p->DropToKey = 1;
p->Dropping = 0;
}
return ERR_NONE;
}
static bool_t OGMHeader(ogg* p, oggstream* s, const char* Data, int Length )
{
int i;
if (Length<40 || (*Data & PACKET_TYPE_BITS) != PACKET_TYPE_HEADER)
return 0;
if (strncmp(Data+1, "Direct Show Samples embedded in Ogg", 35) == 0)
{
// old header
if (INT32LE(*(int32_t*)(Data+96)) == 0x05589F80)
{
PacketFormatClear(&s->Stream.Format);
s->Stream.Format.Type = PACKET_VIDEO;
s->Stream.Format.Format.Video.Width = INT32LE(*(int32_t*)(Data+176));
s->Stream.Format.Format.Video.Height = INT32LE(*(int32_t*)(Data+180));
s->Stream.Format.Format.Video.Pixel.FourCC = INT32LE(*(int32_t*)(Data+68));
s->Stream.Format.Format.Video.Pixel.BitCount = INT16LE(*(int16_t*)(Data+182));
i = INT16LE(*(int16_t*)(Data+136)); // extrasize
if (i && PacketFormatExtra(&s->Stream.Format,i))
memcpy(s->Stream.Format.Extra,Data+142,s->Stream.Format.ExtraLength);
s->MediaRateDen = INT64LE(*(int32_t*)(Data+164))*TICKSPERSEC;
s->MediaRateNum = 10000000;
s->DefaultLen = 1;
FrameRate(&s->Stream.Format.PacketRate,s->MediaRateNum,s->MediaRateDen/TICKSPERSEC);
return 1;
}
if (INT32LE(*(int32_t*)(Data+96)) == 0x05589F81)
{
PacketFormatClear(&s->Stream.Format);
s->Stream.Format.Type = PACKET_AUDIO;
s->Stream.Format.Format.Audio.Format = INT16LE(*(int16_t*)(Data+124));
s->Stream.Format.Format.Audio.Channels = INT16LE(*(int16_t*)(Data+126));
s->Stream.Format.Format.Audio.BlockAlign = INT16LE(*(int16_t*)(Data+136));
s->Stream.Format.Format.Audio.Bits = INT16LE(*(int16_t*)(Data+138));
s->Stream.Format.Format.Audio.SampleRate = INT32LE(*(int32_t*)(Data+128));
s->Stream.Format.ByteRate = INT32LE(*(int32_t*)(p+132));
i = INT16LE(*(int16_t*)(Data+136)); // extrasize
if (i && PacketFormatExtra(&s->Stream.Format,i))
memcpy(s->Stream.Format.Extra,Data+142,s->Stream.Format.ExtraLength);
s->MediaRateDen = TICKSPERSEC;
s->MediaRateNum = INT32LE(*(int32_t*)(Data+128));
s->DefaultLen = 1;
return 1;
}
}
else
if (Length >= sizeof(ogm_header)+1)
{
ogm_header Head;
memcpy(&Head,Data+1,sizeof(Head));
// new header
if (strncmp(Head.streamtype, MT_Video, strlen(MT_Video)) == 0)
{
PacketFormatClear(&s->Stream.Format);
s->Stream.Format.Type = PACKET_VIDEO;
s->Stream.Format.Format.Video.Width = INT32LE(Head.format.video.width);
s->Stream.Format.Format.Video.Height = INT32LE(Head.format.video.height);
s->Stream.Format.Format.Video.Pixel.FourCC = INT32LE(*(int32_t*)Head.subtype);
s->Stream.Format.Format.Video.Pixel.BitCount = INT16LE(Head.bits_per_sample);
s->MediaRateDen = INT64LE(Head.time_unit)*TICKSPERSEC;
s->MediaRateNum = INT64LE(Head.samples_per_unit) * 10000000;
s->DefaultLen = INT32LE(Head.default_len);
FrameRate(&s->Stream.Format.PacketRate,s->MediaRateNum,s->MediaRateDen/TICKSPERSEC);
i = Length - (sizeof(ogm_header)+1);
if (i && PacketFormatExtra(&s->Stream.Format,i))
memcpy(s->Stream.Format.Extra,Data+1+sizeof(ogm_header),s->Stream.Format.ExtraLength);
return 1;
}
if (strncmp(Head.streamtype, MT_Audio, strlen(MT_Audio)) == 0)
{
PacketFormatClear(&s->Stream.Format);
s->Stream.Format.Type = PACKET_AUDIO;
s->Stream.Format.Format.Audio.Format = 0;
for (i=0;i<4;++i)
if (Head.subtype[i])
s->Stream.Format.Format.Audio.Format = s->Stream.Format.Format.Audio.Format*16+Hex(Head.subtype[i]);
s->Stream.Format.Format.Audio.Channels = INT16LE(Head.format.audio.channels);
s->Stream.Format.Format.Audio.Bits = INT16LE(Head.bits_per_sample);
s->Stream.Format.Format.Audio.BlockAlign = INT16LE(Head.format.audio.blockalign);
s->Stream.Format.ByteRate = INT32LE(Head.format.audio.avgbytespersec);
s->Stream.Format.Format.Audio.SampleRate = (int)INT64LE(Head.samples_per_unit);
s->MediaRateDen = INT64LE(Head.time_unit)*TICKSPERSEC;
s->MediaRateNum = INT64LE(Head.samples_per_unit) * 10000000;
s->DefaultLen = INT32LE(Head.default_len);
i = Length - (sizeof(ogm_header)+1);
if (i && PacketFormatExtra(&s->Stream.Format,i))
memcpy(s->Stream.Format.Extra,Data+1+sizeof(ogm_header),s->Stream.Format.ExtraLength);
return 1;
}
if (strncmp(Data+1, MT_Text, strlen(MT_Text)) == 0)
{
PacketFormatClear(&s->Stream.Format);
s->Stream.Format.Type = PACKET_SUBTITLE;
s->Stream.Format.Format.Subtitle.FourCC = SUBTITLE_OEM; //???
s->MediaRateDen = INT64LE(Head.time_unit)*TICKSPERSEC;
s->MediaRateNum = INT64LE(Head.samples_per_unit) * 10000000;
s->DefaultLen = INT32LE(Head.default_len);
i = Length - (sizeof(ogm_header)+1);
if (i && PacketFormatExtra(&s->Stream.Format,i))
memcpy(s->Stream.Format.Extra,Data+1+sizeof(ogm_header),s->Stream.Format.ExtraLength);
return 1;
}
}
return 0;
}
