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Add support for media device discovery and messaging (fixes issue #2900)

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Chromium supports communication with media devices on the local network via
the Cast and DIAL protocols. This takes two primary forms:

1. Messaging, where strings representing state information are passed between
   the client and a dedicated receiver app on the media device. The receiver
   app communicates directly with an app-specific backend service to retrieve
   and possibly control media playback.
2. Tab/desktop mirroring, where the media contents are streamed directly from
   the browser to a generic streaming app on the media device and playback is
   controlled by the browser.

This change adds support for device discovery and messaging (but not
mirroring) with functionality exposed via the new CefMediaRouter interface.

To test: Navigate to http://tests/media_router in cefclient and follow the
on-screen instructions.
This commit is contained in:
Marshall Greenblatt
2020-03-19 11:34:15 -04:00
parent fecd582035
commit 03fd5b15da
69 changed files with 5402 additions and 33 deletions
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9
include/capi/cef_request_context_capi.h
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@ -33,7 +33,7 @@
// by hand. See the translator.README.txt file in the tools directory for
// more information.
//
// $hash=2b01472d9b9a8cc9d1b2e669c91c2849bdb162e9$
// $hash=7ce0953f069204a4dd2037c4a05ac9454c5e66a6$
//
#ifndef CEF_INCLUDE_CAPI_CEF_REQUEST_CONTEXT_CAPI_H_
@ -44,6 +44,7 @@
#include "include/capi/cef_cookie_capi.h"
#include "include/capi/cef_extension_capi.h"
#include "include/capi/cef_extension_handler_capi.h"
#include "include/capi/cef_media_router_capi.h"
#include "include/capi/cef_values_capi.h"
#ifdef __cplusplus
@ -353,6 +354,12 @@ typedef struct _cef_request_context_t {
struct _cef_extension_t*(CEF_CALLBACK* get_extension)(
struct _cef_request_context_t* self,
const cef_string_t* extension_id);
///
// Returns the MediaRouter object associated with this context.
///
struct _cef_media_router_t*(CEF_CALLBACK* get_media_router)(
struct _cef_request_context_t* self);
} cef_request_context_t;
///