michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "plstr.h"
michael@0: #include "nsDeviceChannel.h"
michael@0: #include "nsDeviceCaptureProvider.h"
michael@0: 
michael@0: #ifdef MOZ_WIDGET_ANDROID
michael@0: #include "mozilla/Preferences.h"
michael@0: #include "AndroidCaptureProvider.h"
michael@0: #endif
michael@0: 
michael@0: using namespace mozilla;
michael@0: 
michael@0: // Copied from image/decoders/icon/nsIconURI.cpp
michael@0: // takes a string like ?size=32&contentType=text/html and returns a new string
michael@0: // containing just the attribute values. i.e you could pass in this string with
michael@0: // an attribute name of "size=", this will return 32
michael@0: // Assumption: attribute pairs are separated by &
michael@0: void extractAttributeValue(const char* searchString, const char* attributeName, nsCString& result)
michael@0: {
michael@0:   result.Truncate();
michael@0: 
michael@0:   if (!searchString || !attributeName)
michael@0:     return;
michael@0: 
michael@0:   uint32_t attributeNameSize = strlen(attributeName);
michael@0:   const char *startOfAttribute = PL_strcasestr(searchString, attributeName);
michael@0:   if (!startOfAttribute ||
michael@0:       !( *(startOfAttribute-1) == '?' || *(startOfAttribute-1) == '&') )
michael@0:     return;
michael@0: 
michael@0:   startOfAttribute += attributeNameSize; // Skip the attributeName
michael@0:   if (!*startOfAttribute)
michael@0:     return;
michael@0: 
michael@0:   const char *endOfAttribute = strchr(startOfAttribute, '&');
michael@0:   if (endOfAttribute) {
michael@0:     result.Assign(Substring(startOfAttribute, endOfAttribute));
michael@0:   } else {
michael@0:     result.Assign(startOfAttribute);
michael@0:   }
michael@0: }
michael@0: 
michael@0: NS_IMPL_ISUPPORTS_INHERITED(nsDeviceChannel,
michael@0:                             nsBaseChannel,
michael@0:                             nsIChannel)
michael@0: 
michael@0: // nsDeviceChannel methods
michael@0: nsDeviceChannel::nsDeviceChannel()
michael@0: {
michael@0:   SetContentType(NS_LITERAL_CSTRING("image/png"));
michael@0: }
michael@0: 
michael@0: nsDeviceChannel::~nsDeviceChannel() 
michael@0: {
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsDeviceChannel::Init(nsIURI* aUri)
michael@0: {
michael@0:   nsBaseChannel::Init();
michael@0:   nsBaseChannel::SetURI(aUri);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsDeviceChannel::OpenContentStream(bool aAsync,
michael@0:                                    nsIInputStream** aStream,
michael@0:                                    nsIChannel** aChannel)
michael@0: {
michael@0:   if (!aAsync)
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0: 
michael@0:   nsCOMPtr<nsIURI> uri = nsBaseChannel::URI();
michael@0:   *aStream = nullptr;
michael@0:   *aChannel = nullptr;
michael@0:   NS_NAMED_LITERAL_CSTRING(width, "width=");
michael@0:   NS_NAMED_LITERAL_CSTRING(height, "height=");
michael@0: 
michael@0:   nsAutoCString spec;
michael@0:   uri->GetSpec(spec);
michael@0: 
michael@0:   nsAutoCString type;
michael@0: 
michael@0:   nsRefPtr<nsDeviceCaptureProvider> capture;
michael@0:   nsCaptureParams captureParams;
michael@0:   captureParams.camera = 0;
michael@0:   if (kNotFound != spec.Find(NS_LITERAL_CSTRING("type=image/png"),
michael@0:                              true,
michael@0:                              0,
michael@0:                              -1)) {
michael@0:     type.AssignLiteral("image/png");
michael@0:     SetContentType(type);
michael@0:     captureParams.captureAudio = false;
michael@0:     captureParams.captureVideo = true;
michael@0:     captureParams.timeLimit = 0;
michael@0:     captureParams.frameLimit = 1;
michael@0:     nsAutoCString buffer;
michael@0:     extractAttributeValue(spec.get(), "width=", buffer);
michael@0:     nsresult err;
michael@0:     captureParams.width = buffer.ToInteger(&err);
michael@0:     if (!captureParams.width)
michael@0:       captureParams.width = 640;
michael@0:     extractAttributeValue(spec.get(), "height=", buffer);
michael@0:     captureParams.height = buffer.ToInteger(&err);
michael@0:     if (!captureParams.height)
michael@0:       captureParams.height = 480;
michael@0:     extractAttributeValue(spec.get(), "camera=", buffer);
michael@0:     captureParams.camera = buffer.ToInteger(&err);
michael@0:     captureParams.bpp = 32;
michael@0: #ifdef MOZ_WIDGET_ANDROID
michael@0:     capture = GetAndroidCaptureProvider();
michael@0: #endif
michael@0:   } else if (kNotFound != spec.Find(NS_LITERAL_CSTRING("type=video/x-raw-yuv"),
michael@0:                                     true,
michael@0:                                     0,
michael@0:                                     -1)) {
michael@0:     type.AssignLiteral("video/x-raw-yuv");
michael@0:     SetContentType(type);
michael@0:     captureParams.captureAudio = false;
michael@0:     captureParams.captureVideo = true;
michael@0:     nsAutoCString buffer;
michael@0:     extractAttributeValue(spec.get(), "width=", buffer);
michael@0:     nsresult err;
michael@0:     captureParams.width = buffer.ToInteger(&err);
michael@0:     if (!captureParams.width)
michael@0:       captureParams.width = 640;
michael@0:     extractAttributeValue(spec.get(), "height=", buffer);
michael@0:     captureParams.height = buffer.ToInteger(&err);
michael@0:     if (!captureParams.height)
michael@0:       captureParams.height = 480;
michael@0:     extractAttributeValue(spec.get(), "camera=", buffer);
michael@0:     captureParams.camera = buffer.ToInteger(&err);
michael@0:     captureParams.bpp = 32;
michael@0:     captureParams.timeLimit = 0;
michael@0:     captureParams.frameLimit = 60000;
michael@0: #ifdef MOZ_WIDGET_ANDROID
michael@0:     // only enable if "device.camera.enabled" is true.
michael@0:     if (Preferences::GetBool("device.camera.enabled", false) == true)
michael@0:       capture = GetAndroidCaptureProvider();
michael@0: #endif
michael@0:   } else {
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0: 
michael@0:   if (!capture)
michael@0:     return NS_ERROR_FAILURE;
michael@0: 
michael@0:   return capture->Init(type, &captureParams, aStream);
michael@0: }