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{
    "id": 19053,
    "url": "https://patchwork.libcamera.org/api/1.1/patches/19053/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/19053/",
    "project": {
        "id": 1,
        "url": "https://patchwork.libcamera.org/api/1.1/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": "<20230918085222.500697-2-chenghaoyang@chromium.org>",
    "date": "2023-09-18T08:49:21",
    "name": "[libcamera-devel,v1,1/1] libcamera: Fix ipu3's issue of first black frame",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "3fe966468393ec18383eb1fc3cfcf7ad12d2424f",
    "submitter": {
        "id": 117,
        "url": "https://patchwork.libcamera.org/api/1.1/people/117/?format=api",
        "name": "Cheng-Hao Yang",
        "email": "chenghaoyang@chromium.org"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/19053/mbox/",
    "series": [
        {
            "id": 4028,
            "url": "https://patchwork.libcamera.org/api/1.1/series/4028/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4028",
            "date": "2023-09-18T08:49:20",
            "name": "Fix ipu3 pipeline handler's first frame",
            "version": 1,
            "mbox": "https://patchwork.libcamera.org/series/4028/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/19053/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/19053/checks/",
    "tags": {},
    "headers": {
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        "To": "libcamera-devel@lists.libcamera.org",
        "Date": "Mon, 18 Sep 2023 08:49:21 +0000",
        "Message-ID": "<20230918085222.500697-2-chenghaoyang@chromium.org>",
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        "Content-Transfer-Encoding": "8bit",
        "Subject": "[libcamera-devel] [PATCH v1 1/1] libcamera: Fix ipu3's issue of\n\tfirst black frame",
        "X-BeenThere": "libcamera-devel@lists.libcamera.org",
        "X-Mailman-Version": "2.1.29",
        "Precedence": "list",
        "List-Id": "<libcamera-devel.lists.libcamera.org>",
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        "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>",
        "From": "Harvey Yang via libcamera-devel <libcamera-devel@lists.libcamera.org>",
        "Reply-To": "Harvey Yang <chenghaoyang@chromium.org>",
        "Cc": "Harvey Yang <chenghaoyang@chromium.org>",
        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "As ipu3 ISP requires two frames in the pipeline to generate non-delayed\noutput, this CL fixes the problem of the first frame (preview and\ncapture) being black by queueing the first buffer twice.\n\nSigned-off-by: Harvey Yang <chenghaoyang@chromium.org>\n---\n src/libcamera/pipeline/ipu3/ipu3.cpp | 50 ++++++++++++++++++++++++----\n 1 file changed, 43 insertions(+), 7 deletions(-)",
    "diff": "diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp\nindex a81c817a..fa4a8a10 100644\n--- a/src/libcamera/pipeline/ipu3/ipu3.cpp\n+++ b/src/libcamera/pipeline/ipu3/ipu3.cpp\n@@ -86,11 +86,15 @@ public:\n \n \tControlInfoMap ipaControls_;\n \n+\tbool firstRequest_ = true;\n+\n private:\n \tvoid metadataReady(unsigned int id, const ControlList &metadata);\n \tvoid paramsBufferReady(unsigned int id);\n \tvoid setSensorControls(unsigned int id, const ControlList &sensorControls,\n \t\t\t       const ControlList &lensControls);\n+\n+\tstd::map<FrameBuffer *, int> bufferReturnCounters_;\n };\n \n class IPU3CameraConfiguration : public CameraConfiguration\n@@ -721,6 +725,8 @@ int PipelineHandlerIPU3::start(Camera *camera, [[maybe_unused]] const ControlLis\n \tImgUDevice *imgu = data->imgu_;\n \tint ret;\n \n+\tdata->firstRequest_ = true;\n+\n \t/* Disable test pattern mode on the sensor, if any. */\n \tret = cio2->sensor()->setTestPatternMode(\n \t\tcontrols::draft::TestPatternModeEnum::TestPatternModeOff);\n@@ -1224,22 +1230,37 @@ void IPU3CameraData::paramsBufferReady(unsigned int id)\n \tif (!info)\n \t\treturn;\n \n+\tconst int yuvCount = firstRequest_ ? 2 : 1;\n+\tfirstRequest_ = false;\n \t/* Queue all buffers from the request aimed for the ImgU. */\n \tfor (auto it : info->request->buffers()) {\n \t\tconst Stream *stream = it.first;\n \t\tFrameBuffer *outbuffer = it.second;\n \n-\t\tif (stream == &outStream_)\n-\t\t\timgu_->output_->queueBuffer(outbuffer);\n-\t\telse if (stream == &vfStream_)\n-\t\t\timgu_->viewfinder_->queueBuffer(outbuffer);\n+\t\tif (stream == &outStream_) {\n+\t\t\tfor (int i = 0; i < yuvCount; ++i) {\n+\t\t\t\tbufferReturnCounters_[outbuffer] += 1;\n+\t\t\t\timgu_->output_->queueBuffer(outbuffer);\n+\t\t\t}\n+\t\t} else if (stream == &vfStream_) {\n+\t\t\tfor (int i = 0; i < yuvCount; ++i) {\n+\t\t\t\tbufferReturnCounters_[outbuffer] += 1;\n+\t\t\t\timgu_->viewfinder_->queueBuffer(outbuffer);\n+\t\t\t}\n+\t\t}\n \t}\n \n \tinfo->paramBuffer->_d()->metadata().planes()[0].bytesused =\n \t\tsizeof(struct ipu3_uapi_params);\n-\timgu_->param_->queueBuffer(info->paramBuffer);\n-\timgu_->stat_->queueBuffer(info->statBuffer);\n-\timgu_->input_->queueBuffer(info->rawBuffer);\n+\tfor (int i = 0; i < yuvCount; ++i) {\n+\t\tbufferReturnCounters_[info->paramBuffer] += 1;\n+\t\tbufferReturnCounters_[info->statBuffer] += 1;\n+\t\tbufferReturnCounters_[info->rawBuffer] += 1;\n+\n+\t\timgu_->param_->queueBuffer(info->paramBuffer);\n+\t\timgu_->stat_->queueBuffer(info->statBuffer);\n+\t\timgu_->input_->queueBuffer(info->rawBuffer);\n+\t}\n }\n \n void IPU3CameraData::metadataReady(unsigned int id, const ControlList &metadata)\n@@ -1268,6 +1289,11 @@ void IPU3CameraData::metadataReady(unsigned int id, const ControlList &metadata)\n  */\n void IPU3CameraData::imguOutputBufferReady(FrameBuffer *buffer)\n {\n+\tif (--bufferReturnCounters_[buffer] > 0)\n+\t\treturn;\n+\n+\tbufferReturnCounters_.erase(buffer);\n+\n \tIPU3Frames::Info *info = frameInfos_.find(buffer);\n \tif (!info)\n \t\treturn;\n@@ -1334,6 +1360,11 @@ void IPU3CameraData::cio2BufferReady(FrameBuffer *buffer)\n \n void IPU3CameraData::paramBufferReady(FrameBuffer *buffer)\n {\n+\tif (--bufferReturnCounters_[buffer] > 0)\n+\t\treturn;\n+\n+\tbufferReturnCounters_.erase(buffer);\n+\n \tIPU3Frames::Info *info = frameInfos_.find(buffer);\n \tif (!info)\n \t\treturn;\n@@ -1354,6 +1385,11 @@ void IPU3CameraData::paramBufferReady(FrameBuffer *buffer)\n \n void IPU3CameraData::statBufferReady(FrameBuffer *buffer)\n {\n+\tif (--bufferReturnCounters_[buffer] > 0)\n+\t\treturn;\n+\n+\tbufferReturnCounters_.erase(buffer);\n+\n \tIPU3Frames::Info *info = frameInfos_.find(buffer);\n \tif (!info)\n \t\treturn;\n",
    "prefixes": [
        "libcamera-devel",
        "v1",
        "1/1"
    ]
}