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Viewing file:     ogg_sync_pageout.html (2.46 KB)      -rw-r--r--

ogg_sync_pageout

declared in "ogg/ogg.h";

This function takes the data stored in the buffer of the ogg_sync_state struct and inserts them into an ogg_page.

In an actual decoding loop, this function should be called first to ensure that the buffer is cleared. The example code below illustrates a clean reading loop which will fill and output pages.

Caution:This function should be called before reading into the buffer to ensure that data does not remain in the ogg_sync_state struct. Failing to do so may result in a memory leak. See the example code below for details.

int ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og);

Parameters

oy

Pointer to a previously declared ogg_sync_state struct. Normally, the internal storage of this struct should be filled with newly read data and verified using ogg_sync_wrote.

og

Pointer to page struct filled by this function.

Return Values

-1 if we were not properly synced and had to skip some bytes.

0 if we need more data to verify a page.

1 if we have a page.

Example Usage

if (ogg_sync_pageout(&oy, &og) != 1) {
	buffer = ogg_sync_buffer(&oy, 8192);
	bytes = fread(buffer, 1, 8192, stdin);
	ogg_sync_wrote(&oy, bytes);
}