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Introduce GstH264Decoder based Nvidia H.264 decoder element. Similar the element factory name of to v4l2 stateless codec, this element can be configured with factory name "gstnvh264sldec". Note that "sl" in the name stands for "stateless" For now, existing nvh264dec covers more profile and formats (e.g., interlaced stream) than this implementation. However, this implementation allows us to control lower level parameters such as decoded picture buffer management and therefore we can get a chance to improve performance in terms of latency. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1198>
152 lines
4.8 KiB
C
152 lines
4.8 KiB
C
/*
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* Copyright (C) 2017 Ericsson AB. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstnvdec.h"
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#include "gstnvenc.h"
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#include "gstnvh264dec.h"
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#include "gstnvdecoder.h"
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GST_DEBUG_CATEGORY (gst_nvcodec_debug);
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GST_DEBUG_CATEGORY (gst_nvdec_debug);
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GST_DEBUG_CATEGORY (gst_nvenc_debug);
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GST_DEBUG_CATEGORY (gst_nv_decoder_debug);
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#define GST_CAT_DEFAULT gst_nvcodec_debug
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static gboolean
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plugin_init (GstPlugin * plugin)
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{
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CUresult cuda_ret;
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gint dev_count = 0;
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gint i;
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gboolean nvdec_available = TRUE;
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gboolean nvenc_available = TRUE;
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/* hardcoded minimum supported version */
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guint api_major_ver = 8;
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guint api_minor_ver = 1;
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GST_DEBUG_CATEGORY_INIT (gst_nvcodec_debug, "nvcodec", 0, "nvcodec");
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GST_DEBUG_CATEGORY_INIT (gst_nvdec_debug, "nvdec", 0, "nvdec");
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GST_DEBUG_CATEGORY_INIT (gst_nvenc_debug, "nvenc", 0, "nvenc");
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GST_DEBUG_CATEGORY_INIT (gst_nv_decoder_debug, "nvdecoder", 0, "nvdecoder");
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if (!gst_cuda_load_library ()) {
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GST_WARNING ("Failed to load cuda library");
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return TRUE;
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}
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/* get available API version from nvenc and it will be passed to
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* nvdec */
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if (!gst_nvenc_load_library (&api_major_ver, &api_minor_ver)) {
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GST_WARNING ("Failed to load nvenc library");
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nvenc_available = FALSE;
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}
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if (!gst_cuvid_load_library (api_major_ver, api_minor_ver)) {
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GST_WARNING ("Failed to load nvdec library");
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nvdec_available = FALSE;
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}
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if (!nvdec_available && !nvenc_available)
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return TRUE;
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cuda_ret = CuInit (0);
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if (cuda_ret != CUDA_SUCCESS) {
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GST_WARNING ("Failed to init cuda, ret: 0x%x", (gint) cuda_ret);
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return TRUE;
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}
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if (CuDeviceGetCount (&dev_count) != CUDA_SUCCESS || !dev_count) {
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GST_WARNING ("No available device, ret: 0x%x", (gint) cuda_ret);
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return TRUE;
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}
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for (i = 0; i < dev_count; i++) {
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CUdevice cuda_device;
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CUcontext cuda_ctx;
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cuda_ret = CuDeviceGet (&cuda_device, i);
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if (cuda_ret != CUDA_SUCCESS) {
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GST_WARNING ("Failed to get device handle %d, ret: 0x%x", i,
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(gint) cuda_ret);
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continue;
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}
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cuda_ret = CuCtxCreate (&cuda_ctx, 0, cuda_device);
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if (cuda_ret != CUDA_SUCCESS) {
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GST_WARNING ("Failed to create cuda context, ret: 0x%x", (gint) cuda_ret);
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continue;
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}
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CuCtxPopCurrent (NULL);
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if (nvdec_available) {
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gint j;
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for (j = 0; j < cudaVideoCodec_NumCodecs; j++) {
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GstCaps *sink_template = NULL;
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GstCaps *src_template = NULL;
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cudaVideoCodec codec = (cudaVideoCodec) j;
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if (gst_nv_decoder_check_device_caps (cuda_ctx,
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codec, &sink_template, &src_template)) {
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const gchar *codec_name = gst_cuda_video_codec_to_string (codec);
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GST_INFO ("CUDA video codec %s, sink template %" GST_PTR_FORMAT
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"src template %" GST_PTR_FORMAT, codec_name,
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sink_template, src_template);
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gst_nvdec_plugin_init (plugin,
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i, codec, codec_name, sink_template, src_template);
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if (codec == cudaVideoCodec_H264) {
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gst_nv_h264_dec_register (plugin,
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i, GST_RANK_SECONDARY, sink_template, src_template);
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}
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gst_caps_unref (sink_template);
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gst_caps_unref (src_template);
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}
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}
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}
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if (nvenc_available)
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gst_nvenc_plugin_init (plugin, i, cuda_ctx);
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CuCtxDestroy (cuda_ctx);
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}
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return TRUE;
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}
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GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, nvcodec,
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"GStreamer NVCODEC plugin", plugin_init, VERSION, "LGPL",
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GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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