On Thu, May 12, 2011 at 06:29:10PM +0200, Michal Privoznik wrote:
> * src/libvirt.c: new function virDomainScreenshot
> ---
> src/libvirt.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 files changed, 60 insertions(+), 0 deletions(-)
>
> diff --git a/src/libvirt.c b/src/libvirt.c
> index 7564db0..914618d 100644
> --- a/src/libvirt.c
> +++ b/src/libvirt.c
> @@ -2444,6 +2444,66 @@ error:
> }
>
> /**
> + * virDomainScreenshot:
> + * @domain: a domain object
> + * @stream: stream to use as output
> + * @screen: monitor ID to take screenshot from
> + * @flags: extra flags, currently unused
> + *
> + * Take a screenshot of current domain console as a stream. The image format
> + * is hypervisor specific. Moreover, some hypervisors supports multiple
> + * displays per domain. These can be distinguished by @screen argument.
Need to document the semantics of 'screen' wrt to multiple devices
and multiple outputs.
> + *
> + * This call sets up a stream; subsequent use of stream API is necessary
> + * to transfer actual data, determine how much data is successfully
> + * transfered, and detect any errors.
> + *
> + * Returns a string representing the mime-type of the image format, or
> + * NULL upon error. The caller must free() the returned value.
> + */
> +char *
> +virDomainScreenshot(virDomainPtr domain,
> + virStreamPtr stream,
> + unsigned int screen,
> + unsigned int flags)
> +{
> + VIR_DOMAIN_DEBUG(domain, "stream=%p flags=%u", stream, flags);
> +
> + virResetLastError();
> +
> + if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
> + virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
> + virDispatchError(NULL);
> + return NULL;
> + }
> + if (!VIR_IS_STREAM(stream)) {
> + virLibConnError(VIR_ERR_INVALID_STREAM, __FUNCTION__);
> + return NULL;
> + }
> + if (domain->conn->flags & VIR_CONNECT_RO ||
> + stream->conn->flags & VIR_CONNECT_RO) {
> + virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
> + goto error;
> + }
> +
> + if (domain->conn->driver->domainScreenshot) {
> + char * ret;
> + ret = domain->conn->driver->domainScreenshot(domain, stream,
> + screen, flags);
> +
> + if (ret == NULL)
> + goto error;
> + return ret;
> + }
> +
> + virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
> +
> +error:
> + virDispatchError(domain->conn);
> + return NULL;
> +}
ACK
Daniel
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