Decode a frame from a stream
Synopsis:
#include <img/img.h>
int img_load( img_lib_t ilib,
io_stream_t *input,
const img_decode_callouts_t *callouts,
img_t *img );
Arguments:
- ilib
- A handle for the image library, returned by img_lib_attach().
- input
- The input stream.
- callouts
- A pointer to an img_decode_callouts_t structure that provides system callouts for the decoder. If you specify NULL for this value, a set of default callouts is supplied.
- img
- The address of an img_t structure the function fills in with information about the decoded frame.
Library:
libimg
Use the -l img option to
qcc
to link against this library.
Description:
This function decodes a frame from a streaming source. This function decodes only the first frame encountered.
Returns:
- IMG_ERR_OK
- Success
- IMG_ERR_MEM
- Memory-allocation failure.
- IMG_ERR_FORMAT
- No appopriate codec could be found. The codec you require could be missing or corrupt, or the file could be corrupt.
- IMG_ERR_NOSUPPORT
- Output data not supported; the codec and application could not agree on an output format.
- IMG_ERR_NODATA
- No frame data was present.
- IMG_ERR_CORRUPT
- Invalid data encountered in the file, preventing the decode from proceeding. Some of the frame may be intact.
- IMG_ERR_TRUNC
- Premature end of file encountered. Some of the frame may be intact.
- IMG_ERR_INTR
- Decode was interrupted by application.
Classification:
Image library
Safety: |
|
Interrupt handler |
No |
Signal handler |
No |
Thread |
No |