| Class Overview |
BMediaBufferEncoder();
BMediaBufferEncoder(const media_format* outputFormat);
BMediaBufferEncoder(const media_codec_info* mci);
The constructor sets up the BMediaBufferEncoder.
If you use the empty form of the constructor, you'll have to call
SetTo()
to establish the format to be encoded before calling
Encode().
The second form accepts a
media_format
structure, inFormat, that
indicates the type of media data that will be input into the encoder.
The third form of the constructor accepts a
media_codec_info structure,
mci, that determines which codec should be used.
If you use either the
media_format
or media_codec_info
form of the constructor, you must call
InitCheck()
to ensure that construction was
successful before using any other functions in this class.
status_t EncodeToBuffer(void* outputBuffer,
size_t* outputSize,
const void* inputBuffer,
int64 frameCount,
media_encode_info* info);Encodes a chunk of media data from the input buffer by
inputBuffer, which contains
frameCount frames of data. The encoded data is
written into the buffer indicated by
outputBuffer. On return,
outputSize indicates how many bytes of data were
written into the buffer.
The media_encode_info structure info is used on input to specify encoding parameters.
| Return Code | Description |
|---|---|
| No error. |
Other errors. | The encoder's
|
status_t InitCheck() const;Returns a status_t value indicating whether or not construction was
successful. You must call this function after construction before calling
any other BMediaBufferEncoder functions.
| Return Code | Description |
|---|---|
| The constructor was successful. |
Other errors. | See
|
status_t WriteChunk(const void* chunkData,
size_t chunkLength,
media_encode_info* info) = 0;Implemented to write the encoded media data into the buffer specified
when
EncodeToBuffer()
was called.
