img_write()

Encode a frame to an output stream on the filesystem

Synopsis:

#include <img.h>

int img_write_file( img_lib_t                    ilib,
                    io_stream_t*                 output,
                    const img_encode_callouts_t* callouts,
                    img_t*                       img
                    img_codec_t*                 codec );

Arguments:

ilib

A handle for the image library, returned by img_lib_attach().

output

An io_stream_t to use for the output.

callouts

A pointer to an img_encode_callouts_t structure that provides system callouts for the encoder. If you specify NULL for this value, the library supplies a set of default callouts.

img

The address of an img_t structure describing the frame to be encoded.

codec

The codec to use for the encoding. You must use one of img_codec_list_byext() or img_codec_list_bymime() to get the codec.

Library:

img

Description:

This function encodes a frame to an io_stream_t output stream on the filesystem.

Returns:

IMG_ERR_OK

Success

IMG_ERR_FILE

Error accessing path (errno is set).

IMG_ERR_MEM

Memory-allocation failure.

IMG_ERR_FORMAT

No appropriate codec could be found that handles the extension included in the provided filename. The codec you require could be missing or corrupt.

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

Encode was interrupted by application.

Classification:

Image library

See also:

img_t, img_lib_attach()