Method
VipsImagejpegsave_buffer
Declaration [src]
int
vips_jpegsave_buffer (
VipsImage* in,
void** buf,
size_t* len,
...
)
Description [src]
As vips_jpegsave(), but save to a memory buffer.
The address of the buffer is returned in obuf, the length of the buffer in
olen. You are responsible for freeing the buffer with g_free()
when you are done with it.
::: tip “Optional arguments”
* Q: gint, quality factor
* optimize_coding: gboolean, compute optimal Huffman coding tables
* interlace: gboolean, write an interlaced (progressive) jpeg
* subsample_mode: VipsForeignSubsample, chroma subsampling mode
* trellis_quant: gboolean, apply trellis quantisation to each 8x8 block
* overshoot_deringing: gboolean, overshoot samples with extreme values
* optimize_scans: gboolean, split DCT coefficients into separate scans
* quant_table: gint, quantization table index
* restart_interval: gint, restart interval in mcu
::: seealso
vips_jpegsave(), vips_image_write_to_file().
Parameters
buf |
An array of guint8 |
Return output buffer here. |
|
The length of the array is specified in the len argument. | |
| The data is owned by the caller of the function. | |
len |
size_t* |
Return output length here. |
|
| The data is owned by the caller of the function. | |
... |
none |
|