Gnash media handling subsystem (libmedia) More...

Namespaces
namespace	ffmpeg
	FFMPEG-based media handler module.
namespace	gst
	Gstreamer-based media handler module.
namespace	haiku
	Haiku media kit based media handler module.
Classes
class	AudioDecoder
	Audio decoding base class. More...
class	AudioDecoderSimple
	Audio decoding using "simple" internal decoders. More...
class	AudioDecoderSpeex
	Audio decoder for the speex codec. More...
class	AudioInput
	A class representing a single AudioInput device. More...
class	AudioResampler
	VERY crude audio resampler. More...
class	ExtraVideoInfoFlv
	Extra video info found in some FLV embedded streams. More...
class	ExtraAudioInfoFlv
	Extra audoi info found in some FLV embedded streams. More...
class	FLVParser
	The FLVParser class parses FLV streams. More...
struct	Id3Info
	Contains ID3 data. More...
struct	RegisterAllHandlers
class	MediaHandler
	The MediaHandler class acts as a factory to provide parser and decoders. More...
class	AudioInfo
	Information about an audio stream. More...
class	VideoInfo
	Information about a video stream. More...
class	EncodedExtraData
class	EncodedVideoFrame
	An encoded video frame. More...
class	EncodedAudioFrame
	An encoded audio frame. More...
class	MediaParser
	The MediaParser class provides cursor-based access to encoded media frames. More...
class	SoundInfo
	Class containing information about an embedded sound definition. More...
struct	ImgBuf
	Image buffer wrapper. More...
class	VideoConverter
	Abstract base class for video image space conversion. More...
class	VideoDecoder
	Abstract base class for embedded video decoders. More...
class	VideoInput
	This is the interface for video input devices. More...
Typedefs
typedef GnashFactory < MediaHandler, RegisterAllHandlers >	MediaFactory
Enumerations
enum	videoFrameType { KEY_FRAME = 1, INTER_FRAME = 2, DIS_INTER_FRAME = 3 }
	Video frame types. More...
enum	codecType { CODEC_TYPE_FLASH, CODEC_TYPE_CUSTOM }
	The type of the codec id passed in the AudioInfo or VideoInfo class. More...
enum	videoCodecType { VIDEO_CODEC_H263 = 2, VIDEO_CODEC_SCREENVIDEO = 3, VIDEO_CODEC_VP6 = 4, VIDEO_CODEC_VP6A = 5, VIDEO_CODEC_SCREENVIDEO2 = 6, VIDEO_CODEC_H264 = 7 }
	Video codec ids as defined in flash. More...
enum	audioCodecType { AUDIO_CODEC_RAW = 0, AUDIO_CODEC_ADPCM = 1, AUDIO_CODEC_MP3 = 2, AUDIO_CODEC_UNCOMPRESSED = 3, AUDIO_CODEC_NELLYMOSER_8HZ_MONO = 5, AUDIO_CODEC_NELLYMOSER = 6, AUDIO_CODEC_AAC = 10, AUDIO_CODEC_SPEEX = 11 }
	Audio codec ids as defined in flash. More...
Functions
template<typename T >
void	setId3Info (boost::optional< T > Id3Info::*member, T const &val, boost::optional< Id3Info > &obj)
	Set a field of the optional Id3Info.
std::ostream &	operator<< (std::ostream &os, const VideoInfo &vi)
std::ostream &	operator<< (std::ostream &os, const videoCodecType &t)
std::ostream &	operator<< (std::ostream &os, const audioCodecType &t)

Detailed Description

Gnash media handling subsystem (libmedia)

The core Gnash lib will delegate any parsing decoding and encoding of media files to the media subsystem.

The subsystem's entry point is a MediaHandler instance, which acts as a factory for parsers, decoders and encoders.

Todo:: fix http://wiki.gnashdev.org/wiki/index.php/Libmedia, is obsoleted

Typedef Documentation

typedef GnashFactory<MediaHandler, RegisterAllHandlers> gnash::media::MediaFactory

Enumeration Type Documentation

enum gnash::media::audioCodecType

Audio codec ids as defined in flash.

For some encodings, audio data is organized in logical frames. The structure of such frames (header/payload) is codec dependent. The actual size of each frame may not be known w/out parsing the encoded stream, as it might be specified in the header of each frame.

Other encodings are loosier on frames. For these you can define a frame any way you want, as long as a frame doesn't contain partial samples.

For FFMPEG, you can NOT construct a parser for the loosy-framed codecs.

Parser-needing codecs will be documented as such.

Enumerator:

AUDIO_CODEC_RAW	Signed Linear PCM, unspecified byte order. Use of this codec is deprecated (but still supported) due to the unspecified byte order (you can only play >8bit samples in a sane way when the endiannes of encoding and decoding hosts match). 90% of the times the actual encoder did run on windows, so it is a good bet to guess for little-endian. SampleSize may be 8 or 16 bits.
AUDIO_CODEC_ADPCM	ADPCM format. SWF support 2, 3, 4, and 5 bits / sample. ADPCM "frames" consits of 4096 ADPCM codes per channel. For streaming there is no concept of "seekSamples" like MP3 streaming implements. Thus ADPCM ist suboptimal for streaming as it is difficult to match sound frames with movie frames. Uncompressed SampleSize is always 16 bit.
AUDIO_CODEC_MP3	MP3 format. MP3 is supported for SWF4 and later. MP3 sound is structured in frames consiting of a fixed sized header (32Bit) and compressed sound data. Compressed sound data always contains a fixed number of sound samples (576 or 1152). For streaming sound an additional field is necessary (seekSamples) to keep track of samples exceeding movie frame border. MP3 header contains all necessary information to decode a single frame. From this information one can derive the number of samples and the frame's size. Uncompressed SampleSize is always 16 bit.
AUDIO_CODEC_UNCOMPRESSED	Linear PCM, strictly little-endian.
AUDIO_CODEC_NELLYMOSER_8HZ_MONO	Proprietary simple format. Always 5Khz mono ? SWF6 and later. Data is organized in frames of 256 samples.
AUDIO_CODEC_NELLYMOSER	Proprietary simple format. SWF6 and later. Data is organized in frames of 256 samples.
AUDIO_CODEC_AAC	Advanced Audio Coding.
AUDIO_CODEC_SPEEX	Always 16kHz mono.

enum gnash::media::codecType

The type of the codec id passed in the AudioInfo or VideoInfo class.

Enumerator:

CODEC_TYPE_FLASH	The internal flash codec ids.
CODEC_TYPE_CUSTOM	Custom codecs ids.

enum gnash::media::videoCodecType

Video codec ids as defined in flash.

Enumerator:

VIDEO_CODEC_H263	H263/SVQ3 video codec.
VIDEO_CODEC_SCREENVIDEO	Screenvideo codec.
VIDEO_CODEC_VP6	On2 VP6 video codec.
VIDEO_CODEC_VP6A	On2 VP6 Alpha video codec.
VIDEO_CODEC_SCREENVIDEO2	Screenvideo2 codec.
VIDEO_CODEC_H264	MPEG-4 Part 10, or Advanced Video Coding.

enum gnash::media::videoFrameType

Video frame types.

Enumerator:

KEY_FRAME	Key frames.
INTER_FRAME	Interlaced frames.
DIS_INTER_FRAME	Disposable interlaced frames.

Function Documentation

DSOEXPORT std::ostream & gnash::media::operator<<	(	std::ostream &	os,
		const VideoInfo &	vi
	)

References gnash::media::VideoInfo::codec, gnash::media::VideoInfo::type, gnash::media::VideoInfo::width, gnash::media::VideoInfo::height, gnash::media::VideoInfo::frameRate, and gnash::media::VideoInfo::duration.

DSOEXPORT std::ostream & gnash::media::operator<<	(	std::ostream &	os,
		const videoCodecType &	t
	)

References VIDEO_CODEC_H263, VIDEO_CODEC_SCREENVIDEO, VIDEO_CODEC_VP6, VIDEO_CODEC_VP6A, VIDEO_CODEC_SCREENVIDEO2, VIDEO_CODEC_H264, and gnash::key::t.

DSOEXPORT std::ostream & gnash::media::operator<<	(	std::ostream &	os,
		const audioCodecType &	t
	)

References AUDIO_CODEC_RAW, AUDIO_CODEC_ADPCM, AUDIO_CODEC_MP3, AUDIO_CODEC_UNCOMPRESSED, AUDIO_CODEC_NELLYMOSER_8HZ_MONO, AUDIO_CODEC_NELLYMOSER, AUDIO_CODEC_AAC, AUDIO_CODEC_SPEEX, and gnash::key::t.

template<typename T >

void gnash::media::setId3Info	(	boost::optional< T > Id3Info::*	member,
		T const &	val,
		boost::optional< Id3Info > &	obj
	)		`[inline]`

Set a field of the optional Id3Info.

The object is created if it doesn't already exist.

Parameters:

member	The member to set, e.g. &Id3Info::name
val	The value for the member.
An	Id3Info object.

Namespaces

Classes

Typedefs

Enumerations

Functions

Detailed Description

Typedef Documentation

Enumeration Type Documentation

Function Documentation