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{ "id": 22165, "url": "https://patchwork.libcamera.org/api/patches/22165/?format=api", "web_url": "https://patchwork.libcamera.org/patch/22165/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20241204164137.3938891-4-chenghaoyang@chromium.org>", "date": "2024-12-04T16:36:28", "name": "[v3,3/7] android: Correctly support multiple Mapped streams", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "fad731c8c23e6be53b5283c679394ece5cd81bf8", "submitter": { "id": 117, "url": "https://patchwork.libcamera.org/api/people/117/?format=api", "name": "Cheng-Hao Yang", "email": "chenghaoyang@chromium.org" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/22165/mbox/", "series": [ { "id": 4847, "url": "https://patchwork.libcamera.org/api/series/4847/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4847", "date": "2024-12-04T16:36:25", "name": "Refactor Android HAL before supporting partial result", "version": 3, "mbox": "https://patchwork.libcamera.org/series/4847/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/22165/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/22165/checks/", "tags": {}, "headers": { "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>", "X-Original-To": "parsemail@patchwork.libcamera.org", "Delivered-To": "parsemail@patchwork.libcamera.org", "Received": [ "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 4A76CBDB1C\n\tfor <parsemail@patchwork.libcamera.org>;\n\tWed, 4 Dec 2024 16:41:57 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id B7664660EB;\n\tWed, 4 Dec 2024 17:41:55 +0100 (CET)", "from mail-pf1-x42b.google.com (mail-pf1-x42b.google.com\n\t[IPv6:2607:f8b0:4864:20::42b])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 9AD12660DB\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tWed, 4 Dec 2024 17:41:49 +0100 (CET)", "by mail-pf1-x42b.google.com with SMTP id\n\td2e1a72fcca58-7251abe0e69so38862b3a.0\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tWed, 04 Dec 2024 08:41:49 -0800 (PST)", "from chenghaoyang-low.c.googlers.com.com\n\t(112.212.229.35.bc.googleusercontent.com. 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\n\tWed, 04 Dec 2024 08:41:46 -0800 (PST)", "From": "Harvey Yang <chenghaoyang@chromium.org>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Harvey Yang <chenghaoyang@chromium.org>,\n\tHan-Lin Chen <hanlinchen@chromium.org>", "Subject": "[PATCH v3 3/7] android: Correctly support multiple Mapped streams", "Date": "Wed, 4 Dec 2024 16:36:28 +0000", "Message-ID": "<20241204164137.3938891-4-chenghaoyang@chromium.org>", "X-Mailer": "git-send-email 2.47.0.338.g60cca15819-goog", "In-Reply-To": "<20241204164137.3938891-1-chenghaoyang@chromium.org>", "References": "<20241204164137.3938891-1-chenghaoyang@chromium.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "The Android camera HAL supports creating streams for the Android\nframework by post-processing streams produced by libcamera.\n\nHowever at the moment a single Mapped stream can be associated with a\nDirect stream because, after the first post-processing, the data from\nthe internal stream are returned preventing further post-processing\npasses.\n\nFix this by storing the list of Direct stream buffers used as the\npost-processing source in an Camera3RequestDescriptor::internalBuffers_\nmap to replace the single internalBuffer_ pointer and return the\ninternal buffers when the capture request is deleted.\n\nSigned-off-by: Han-Lin Chen <hanlinchen@chromium.org>\nCo-developed-by: Harvey Yang <chenghaoyang@chromium.org>\nSigned-off-by: Harvey Yang <chenghaoyang@chromium.org>\n---\n src/android/camera_device.cpp | 66 +++++++++++++++++++---------------\n src/android/camera_request.cpp | 11 +++---\n src/android/camera_request.h | 3 +-\n 3 files changed, 47 insertions(+), 33 deletions(-)", "diff": "diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp\nindex f6dadaf22..f2dd8d4fd 100644\n--- a/src/android/camera_device.cpp\n+++ b/src/android/camera_device.cpp\n@@ -966,9 +966,10 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques\n \t * to a libcamera stream. Streams of type Mapped will be handled later.\n \t *\n \t * Collect the CameraStream associated to each requested capture stream.\n-\t * Since requestedStreams is an std:map<>, no duplications can happen.\n+\t * Since directBuffers is an std:map<>, no duplications can\n+\t * happen.\n \t */\n-\tstd::map<CameraStream *, libcamera::FrameBuffer *> requestedBuffers;\n+\tstd::map<CameraStream *, libcamera::FrameBuffer *> directBuffers;\n \tfor (const auto &[i, buffer] : utils::enumerate(descriptor->buffers_)) {\n \t\tCameraStream *cameraStream = buffer.stream;\n \t\tcamera3_stream_t *camera3Stream = cameraStream->camera3Stream();\n@@ -1007,6 +1008,8 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques\n \t\t\t\t\t\t cameraStream->configuration().size);\n \t\t\tframeBuffer = buffer.frameBuffer.get();\n \t\t\tacquireFence = std::move(buffer.fence);\n+\n+\t\t\tdirectBuffers[cameraStream] = frameBuffer;\n \t\t\tLOG(HAL, Debug) << ss.str() << \" (direct)\";\n \t\t\tbreak;\n \n@@ -1015,13 +1018,17 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques\n \t\t\t * Get the frame buffer from the CameraStream internal\n \t\t\t * buffer pool.\n \t\t\t *\n-\t\t\t * The buffer has to be returned to the CameraStream\n-\t\t\t * once it has been processed.\n+\t\t\t * The buffer will be returned to the CameraStream when\n+\t\t\t * the request is destroyed.\n \t\t\t */\n \t\t\tframeBuffer = cameraStream->getBuffer();\n-\t\t\tbuffer.internalBuffer = frameBuffer;\n \t\t\tbuffer.srcBuffer = frameBuffer;\n \n+\t\t\t/*\n+\t\t\t * Track the allocated internal buffers, which will be\n+\t\t\t * recycled when the descriptor destroyed.\n+\t\t\t */\n+\t\t\tdescriptor->internalBuffers_[cameraStream] = frameBuffer;\n \t\t\tLOG(HAL, Debug) << ss.str() << \" (internal)\";\n \n \t\t\tdescriptor->pendingStreamsToProcess_.insert(\n@@ -1037,8 +1044,6 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques\n \t\tauto fence = std::make_unique<Fence>(std::move(acquireFence));\n \t\tdescriptor->request_->addBuffer(cameraStream->stream(),\n \t\t\t\t\t\tframeBuffer, std::move(fence));\n-\n-\t\trequestedBuffers[cameraStream] = frameBuffer;\n \t}\n \n \t/*\n@@ -1076,24 +1081,43 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques\n \t\t * post-processing. No need to recycle the buffer since it's\n \t\t * owned by Android.\n \t\t */\n-\t\tauto iterDirectBuffer = requestedBuffers.find(sourceStream);\n-\t\tif (iterDirectBuffer != requestedBuffers.end()) {\n+\t\tauto iterDirectBuffer = directBuffers.find(sourceStream);\n+\t\tif (iterDirectBuffer != directBuffers.end()) {\n \t\t\tbuffer.srcBuffer = iterDirectBuffer->second;\n \t\t\tcontinue;\n \t\t}\n \n \t\t/*\n-\t\t * If that's not the case, we need to add a buffer to the request\n-\t\t * for this stream.\n+\t\t * If that's not the case, we use an internal buffer allocated\n+\t\t * from the source stream.\n+\t\t */\n+\n+\t\t/*\n+\t\t * If an internal buffer has been requested for the source\n+\t\t * stream before, we should reuse it.\n \t\t */\n-\t\tFrameBuffer *frameBuffer = cameraStream->getBuffer();\n-\t\tbuffer.internalBuffer = frameBuffer;\n+\t\tauto iterInternalBuffer = descriptor->internalBuffers_.find(sourceStream);\n+\t\tif (iterInternalBuffer != descriptor->internalBuffers_.end()) {\n+\t\t\tbuffer.srcBuffer = iterInternalBuffer->second;\n+\t\t\tcontinue;\n+\t\t}\n+\n+\t\t/*\n+\t\t * Otherwise, we need to create an internal buffer to the\n+\t\t * request for the source stream. Get the frame buffer from the\n+\t\t * source stream's internal buffer pool.\n+\t\t *\n+\t\t * The buffer will be returned to the CameraStream when the\n+\t\t * request is destructed.\n+\t\t */\n+\t\tFrameBuffer *frameBuffer = sourceStream->getBuffer();\n \t\tbuffer.srcBuffer = frameBuffer;\n \n \t\tdescriptor->request_->addBuffer(sourceStream->stream(),\n \t\t\t\t\t\tframeBuffer, nullptr);\n \n-\t\trequestedBuffers[sourceStream] = frameBuffer;\n+\t\t/* Track the allocated internal buffer. */\n+\t\tdescriptor->internalBuffers_[sourceStream] = frameBuffer;\n \t}\n \n \t/*\n@@ -1253,13 +1277,6 @@ void CameraDevice::requestComplete(Request *request)\n \t\tif (ret) {\n \t\t\tsetBufferStatus(*buffer, StreamBuffer::Status::Error);\n \t\t\tdescriptor->pendingStreamsToProcess_.erase(stream);\n-\n-\t\t\t/*\n-\t\t\t * If the framebuffer is internal to CameraStream return\n-\t\t\t * it back now that we're done processing it.\n-\t\t\t */\n-\t\t\tif (buffer->internalBuffer)\n-\t\t\t\tstream->putBuffer(buffer->internalBuffer);\n \t\t}\n \t}\n \n@@ -1378,13 +1395,6 @@ void CameraDevice::streamProcessingComplete(StreamBuffer *streamBuffer,\n {\n \tsetBufferStatus(*streamBuffer, status);\n \n-\t/*\n-\t * If the framebuffer is internal to CameraStream return it back now\n-\t * that we're done processing it.\n-\t */\n-\tif (streamBuffer->internalBuffer)\n-\t\tstreamBuffer->stream->putBuffer(streamBuffer->internalBuffer);\n-\n \tCamera3RequestDescriptor *request = streamBuffer->request;\n \n \t{\ndiff --git a/src/android/camera_request.cpp b/src/android/camera_request.cpp\nindex 52a3ac1f7..92e74ab6a 100644\n--- a/src/android/camera_request.cpp\n+++ b/src/android/camera_request.cpp\n@@ -10,6 +10,7 @@\n #include <libcamera/base/span.h>\n \n #include \"camera_buffer.h\"\n+#include \"camera_stream.h\"\n \n using namespace libcamera;\n \n@@ -138,7 +139,12 @@ Camera3RequestDescriptor::Camera3RequestDescriptor(\n \trequest_ = camera->createRequest(reinterpret_cast<uint64_t>(this));\n }\n \n-Camera3RequestDescriptor::~Camera3RequestDescriptor() = default;\n+Camera3RequestDescriptor::~Camera3RequestDescriptor()\n+{\n+\t/* Recycle the allocated internal buffer back to its source stream. */\n+\tfor (auto &[sourceStream, frameBuffer] : internalBuffers_)\n+\t\tsourceStream->putBuffer(frameBuffer);\n+}\n \n /**\n * \\class StreamBuffer\n@@ -166,9 +172,6 @@ Camera3RequestDescriptor::~Camera3RequestDescriptor() = default;\n * \\var StreamBuffer::status\n * \\brief Track the status of the buffer\n *\n- * \\var StreamBuffer::internalBuffer\n- * \\brief Pointer to a buffer internally handled by CameraStream (if any)\n- *\n * \\var StreamBuffer::srcBuffer\n * \\brief Pointer to the source frame buffer used for post-processing\n *\ndiff --git a/src/android/camera_request.h b/src/android/camera_request.h\nindex 335f1985d..6b2a00795 100644\n--- a/src/android/camera_request.h\n+++ b/src/android/camera_request.h\n@@ -49,7 +49,6 @@ public:\n \tstd::unique_ptr<HALFrameBuffer> frameBuffer;\n \tlibcamera::UniqueFD fence;\n \tStatus status = Status::Success;\n-\tlibcamera::FrameBuffer *internalBuffer = nullptr;\n \tconst libcamera::FrameBuffer *srcBuffer = nullptr;\n \tstd::unique_ptr<CameraBuffer> dstBuffer;\n \tCamera3RequestDescriptor *request;\n@@ -85,6 +84,8 @@ public:\n \tstd::unique_ptr<libcamera::Request> request_;\n \tstd::unique_ptr<CameraMetadata> resultMetadata_;\n \n+\tstd::map<CameraStream *, libcamera::FrameBuffer *> internalBuffers_;\n+\n \tbool complete_ = false;\n \tStatus status_ = Status::Success;\n \n", "prefixes": [ "v3", "3/7" ] }