img_encode_frame()
Encode a frame
Synopsis:
#include <img/img.h> int img_encode_frame( img_codec_t codec, io_stream_t* output, const img_encode_callouts_t* callouts, img_t* img, uintptr_t* encode_data );
Arguments:
- codec
- The handle of the codec to use to encode the frame.
- output
- The output destination.
- callouts
- A pointer to an img_encode_callouts_t structure that provides system callouts for the encoder. If you pass NULL for this value, the library uses a set of default callouts. See the description of img_encode_callouts_t for more details.
- img
- The address of an img_t structure describing the frame to be encoded.
- encode_data
- The address of the uintptr_t that was used for img_encode_begin() .
Library:
libimg
Use the -l img option to qcc to link against this library.
Description:
This function encodes a frame. You need to call img_encode_begin() first to prepare for the encode, and img_encode_finish() to release any resources allocated for the encode.
Returns:
- IMG_ERR_OK
- Success. The complete frame was encoded.
- IMG_ERR_MEM
- Memory-allocation failure.
- IMG_ERR_NOSUPPORT
- Input data format not supported; the codec and application could not agree on an output format.
- IMG_ERR_TRUNC
- Error writing data; file was truncated.
- IMG_ERR_INTR
- Encoding was interrupted by the application.
- IMG_ERR_DLL
- Error accessing the codec DLL; check errno and/or try running your application with DL_DEBUG=1.
Classification:
Image library
Safety: | |
---|---|
Interrupt handler | No |
Signal handler | No |
Thread | No |