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Diffstat (limited to 'sys/nvcodec/gstnvh264dec.c')
| -rw-r--r-- | sys/nvcodec/gstnvh264dec.c | 1076 |
1 files changed, 1076 insertions, 0 deletions
diff --git a/sys/nvcodec/gstnvh264dec.c b/sys/nvcodec/gstnvh264dec.c new file mode 100644 index 000000000..a4a4dc38d --- /dev/null +++ b/sys/nvcodec/gstnvh264dec.c @@ -0,0 +1,1076 @@ +/* GStreamer + * Copyright (C) 2017 Ericsson AB. All rights reserved. + * Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.com> + * Copyright (C) 2020 Seungha Yang <seungha@centricular.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + * Copyright 2015 The Chromium Authors. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef HAVE_NVCODEC_GST_GL +#include <gst/gl/gl.h> +#include <gst/gl/gstglfuncs.h> +#endif + +#include "gstnvh264dec.h" +#include "gstcudautils.h" +#include "gstnvdecoder.h" + +#include <string.h> + +GST_DEBUG_CATEGORY_STATIC (gst_nv_h264_dec_debug); +#define GST_CAT_DEFAULT gst_nv_h264_dec_debug + +#ifdef HAVE_NVCODEC_GST_GL +#define SUPPORTED_GL_APIS (GST_GL_API_OPENGL | GST_GL_API_OPENGL3 | GST_GL_API_GLES2) +#endif + +struct _GstNvH264Dec +{ + GstH264Decoder parent; + + GstVideoCodecState *output_state; + + const GstH264SPS *last_sps; + const GstH264PPS *last_pps; + + GstCudaContext *context; + CUstream cuda_stream; + GstNvDecoder *decoder; + CUVIDPICPARAMS params; + + /* slice buffer which will be passed to CUVIDPICPARAMS::pBitstreamData */ + guint8 *bitstream_buffer; + /* allocated memory size of bitstream_buffer */ + gsize bitstream_buffer_alloc_size; + /* current offset of bitstream_buffer (per frame) */ + gsize bitstream_buffer_offset; + + guint *slice_offsets; + guint slice_offsets_alloc_len; + guint num_slices; + + guint width, height; + guint coded_width, coded_height; + guint bitdepth; + guint chroma_format_idc; + GstVideoFormat out_format; + +#ifdef HAVE_NVCODEC_GST_GL + GstGLDisplay *gl_display; + GstGLContext *gl_context; + GstGLContext *other_gl_context; +#endif + + GstNvDecoderOutputType output_type; +}; + +struct _GstNvH264DecClass +{ + GstH264DecoderClass parent_class; + guint cuda_device_id; +}; + +#define gst_nv_h264_dec_parent_class parent_class +G_DEFINE_TYPE (GstNvH264Dec, gst_nv_h264_dec, GST_TYPE_H264_DECODER); + +static void gst_nv_h264_decoder_finalize (GObject * object); +static void gst_nv_h264_dec_set_context (GstElement * element, + GstContext * context); +static gboolean gst_nv_h264_dec_open (GstVideoDecoder * decoder); +static gboolean gst_nv_h264_dec_close (GstVideoDecoder * decoder); +static gboolean gst_nv_h264_dec_negotiate (GstVideoDecoder * decoder); +static gboolean gst_nv_h264_dec_decide_allocation (GstVideoDecoder * + decoder, GstQuery * query); +static gboolean gst_nv_h264_dec_src_query (GstVideoDecoder * decoder, + GstQuery * query); + +/* GstH264Decoder */ +static gboolean gst_nv_h264_dec_new_sequence (GstH264Decoder * decoder, + const GstH264SPS * sps, gint max_dpb_size); +static gboolean gst_nv_h264_dec_new_picture (GstH264Decoder * decoder, + GstH264Picture * picture); +static GstFlowReturn gst_nv_h264_dec_output_picture (GstH264Decoder * + decoder, GstH264Picture * picture); +static gboolean gst_nv_h264_dec_start_picture (GstH264Decoder * decoder, + GstH264Picture * picture, GstH264Slice * slice, GstH264Dpb * dpb); +static gboolean gst_nv_h264_dec_decode_slice (GstH264Decoder * decoder, + GstH264Picture * picture, GstH264Slice * slice); +static gboolean gst_nv_h264_dec_end_picture (GstH264Decoder * decoder, + GstH264Picture * picture); + +static void +gst_nv_h264_dec_class_init (GstNvH264DecClass * klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GstElementClass *element_class = GST_ELEMENT_CLASS (klass); + GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (klass); + GstH264DecoderClass *h264decoder_class = GST_H264_DECODER_CLASS (klass); + + object_class->finalize = gst_nv_h264_decoder_finalize; + + element_class->set_context = GST_DEBUG_FUNCPTR (gst_nv_h264_dec_set_context); + + decoder_class->open = GST_DEBUG_FUNCPTR (gst_nv_h264_dec_open); + decoder_class->close = GST_DEBUG_FUNCPTR (gst_nv_h264_dec_close); + decoder_class->negotiate = GST_DEBUG_FUNCPTR (gst_nv_h264_dec_negotiate); + decoder_class->decide_allocation = + GST_DEBUG_FUNCPTR (gst_nv_h264_dec_decide_allocation); + decoder_class->src_query = GST_DEBUG_FUNCPTR (gst_nv_h264_dec_src_query); + + h264decoder_class->new_sequence = + GST_DEBUG_FUNCPTR (gst_nv_h264_dec_new_sequence); + h264decoder_class->new_picture = + GST_DEBUG_FUNCPTR (gst_nv_h264_dec_new_picture); + h264decoder_class->output_picture = + GST_DEBUG_FUNCPTR (gst_nv_h264_dec_output_picture); + h264decoder_class->start_picture = + GST_DEBUG_FUNCPTR (gst_nv_h264_dec_start_picture); + h264decoder_class->decode_slice = + GST_DEBUG_FUNCPTR (gst_nv_h264_dec_decode_slice); + h264decoder_class->end_picture = + GST_DEBUG_FUNCPTR (gst_nv_h264_dec_end_picture); + + GST_DEBUG_CATEGORY_INIT (gst_nv_h264_dec_debug, + "nvh264dec", 0, "Nvidia H.264 Decoder"); +} + +static void +gst_nv_h264_dec_init (GstNvH264Dec * self) +{ +} + +static void +gst_nv_h264_decoder_finalize (GObject * object) +{ + GstNvH264Dec *self = GST_NV_H264_DEC (object); + + g_free (self->bitstream_buffer); + g_free (self->slice_offsets); + + G_OBJECT_CLASS (parent_class)->finalize (object); +} + +static void +gst_nv_h264_dec_set_context (GstElement * element, GstContext * context) +{ + GstNvH264Dec *self = GST_NV_H264_DEC (element); + GstNvH264DecClass *klass = GST_NV_H264_DEC_GET_CLASS (self); + + GST_DEBUG_OBJECT (self, "set context %s", + gst_context_get_context_type (context)); + + if (gst_cuda_handle_set_context (element, context, klass->cuda_device_id, + &self->context)) { + goto done; + } +#ifdef HAVE_NVCODEC_GST_GL + gst_gl_handle_set_context (element, context, &self->gl_display, + &self->other_gl_context); +#endif + +done: + GST_ELEMENT_CLASS (parent_class)->set_context (element, context); +} + +static gboolean +gst_nv_h264_dec_open (GstVideoDecoder * decoder) +{ + GstNvH264Dec *self = GST_NV_H264_DEC (decoder); + CUresult cuda_ret; + + if (!gst_cuda_ensure_element_context (GST_ELEMENT_CAST (decoder), + 0, &self->context)) { + GST_ERROR_OBJECT (self, "failed to create CUDA context"); + return FALSE; + } + + if (gst_cuda_context_push (self->context)) { + cuda_ret = CuStreamCreate (&self->cuda_stream, CU_STREAM_DEFAULT); + if (!gst_cuda_result (cuda_ret)) { + GST_WARNING_OBJECT (self, + "Could not create CUDA stream, will use default stream"); + self->cuda_stream = NULL; + } + gst_cuda_context_pop (NULL); + } +#if HAVE_NVCODEC_GST_GL + gst_gl_ensure_element_data (GST_ELEMENT (self), + &self->gl_display, &self->other_gl_context); + if (self->gl_display) + gst_gl_display_filter_gl_api (GST_GL_DISPLAY (self->gl_display), + SUPPORTED_GL_APIS); +#endif + + return TRUE; +} + +static gboolean +gst_nv_h264_dec_close (GstVideoDecoder * decoder) +{ + GstNvH264Dec *self = GST_NV_H264_DEC (decoder); + + g_clear_pointer (&self->output_state, gst_video_codec_state_unref); + gst_clear_object (&self->decoder); + + if (self->context && self->cuda_stream) { + if (gst_cuda_context_push (self->context)) { + gst_cuda_result (CuStreamDestroy (self->cuda_stream)); + gst_cuda_context_pop (NULL); + } + } +#ifdef HAVE_NVCODEC_GST_GL + gst_clear_object (&self->gl_context); + gst_clear_object (&self->other_gl_context); + gst_clear_object (&self->gl_display); +#endif + + gst_clear_object (&self->context); + self->cuda_stream = NULL; + + return TRUE; +} + +#ifdef HAVE_NVCODEC_GST_GL +static void +gst_nv_h264_dec_check_cuda_device_from_context (GstGLContext * context, + gboolean * ret) +{ + guint device_count = 0; + CUdevice device_list[1] = { 0, }; + CUresult cuda_ret; + + *ret = FALSE; + + cuda_ret = CuGLGetDevices (&device_count, + device_list, 1, CU_GL_DEVICE_LIST_ALL); + + if (!gst_cuda_result (cuda_ret) || device_count == 0) + return; + + *ret = TRUE; + + return; +} + +static gboolean +gst_nv_h264_dec_ensure_gl_context (GstNvH264Dec * self) +{ + gboolean ret; + + if (!self->gl_display) { + GST_DEBUG_OBJECT (self, "No available OpenGL display"); + return FALSE; + } + + if (!gst_gl_query_local_gl_context (GST_ELEMENT (self), GST_PAD_SRC, + &self->gl_context)) { + GST_INFO_OBJECT (self, "failed to query local OpenGL context"); + if (self->gl_context) + gst_object_unref (self->gl_context); + self->gl_context = + gst_gl_display_get_gl_context_for_thread (self->gl_display, NULL); + if (!self->gl_context + || !gst_gl_display_add_context (self->gl_display, self->gl_context)) { + if (self->gl_context) + gst_object_unref (self->gl_context); + if (!gst_gl_display_create_context (self->gl_display, + self->other_gl_context, &self->gl_context, NULL)) { + GST_ERROR_OBJECT (self, "failed to create OpenGL context"); + return FALSE; + } + if (!gst_gl_display_add_context (self->gl_display, self->gl_context)) { + GST_ERROR_OBJECT (self, + "failed to add the OpenGL context to the display"); + return FALSE; + } + } + } + + if (!gst_gl_context_check_gl_version (self->gl_context, + SUPPORTED_GL_APIS, 3, 0)) { + GST_WARNING_OBJECT (self, "OpenGL context could not support PBO download"); + return FALSE; + } + + gst_gl_context_thread_add (self->gl_context, + (GstGLContextThreadFunc) gst_nv_h264_dec_check_cuda_device_from_context, + &ret); + + if (!ret) { + GST_WARNING_OBJECT (self, "Current OpenGL context is not CUDA-compatible"); + return FALSE; + } + + return TRUE; +} + +#endif + +static gboolean +gst_nv_h264_dec_negotiate (GstVideoDecoder * decoder) +{ + GstNvH264Dec *self = GST_NV_H264_DEC (decoder); + GstH264Decoder *h264dec = GST_H264_DECODER (decoder); + GstVideoCodecState *state; + + GST_DEBUG_OBJECT (self, "negotiate"); + + state = gst_video_decoder_set_output_state (GST_VIDEO_DECODER (self), + self->out_format, self->width, self->height, h264dec->input_state); + + state->caps = gst_video_info_to_caps (&state->info); + + self->output_type = GST_NV_DECOCER_OUTPUT_TYPE_SYSTEM; + +#ifdef HAVE_NVCODEC_GST_GL + { + GstCaps *caps; + caps = gst_pad_get_allowed_caps (GST_VIDEO_DECODER_SRC_PAD (self)); + GST_DEBUG_OBJECT (self, "Allowed caps %" GST_PTR_FORMAT, caps); + + if (!caps || gst_caps_is_any (caps)) { + GST_DEBUG_OBJECT (self, + "cannot determine output format, use system memory"); + } else if (self->gl_display) { + GstCapsFeatures *features; + guint size = gst_caps_get_size (caps); + guint i; + + for (i = 0; i < size; i++) { + features = gst_caps_get_features (caps, i); + if (features && gst_caps_features_contains (features, + GST_CAPS_FEATURE_MEMORY_GL_MEMORY)) { + GST_DEBUG_OBJECT (self, "found GL memory feature, use gl"); + self->output_type = GST_NV_DECOCER_OUTPUT_TYPE_GL; + break; + } + } + } + gst_clear_caps (&caps); + } + + if (self->output_type == GST_NV_DECOCER_OUTPUT_TYPE_GL && + !gst_nv_h264_dec_ensure_gl_context (self)) { + GST_WARNING_OBJECT (self, + "OpenGL context is not CUDA-compatible, fallback to system memory"); + self->output_type = GST_NV_DECOCER_OUTPUT_TYPE_SYSTEM; + } + + if (self->output_type == GST_NV_DECOCER_OUTPUT_TYPE_GL) { + gst_caps_set_features (state->caps, 0, + gst_caps_features_new (GST_CAPS_FEATURE_MEMORY_GL_MEMORY, NULL)); + gst_caps_set_simple (state->caps, "texture-target", G_TYPE_STRING, + "2D", NULL); + } else { + GST_DEBUG_OBJECT (self, "use system memory"); + } +#endif + + if (self->output_state) + gst_video_codec_state_unref (self->output_state); + + self->output_state = state; + + /* TODO: add support D3D11 memory */ + + return GST_VIDEO_DECODER_CLASS (parent_class)->negotiate (decoder); +} + +static gboolean +gst_nv_h264_dec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query) +{ +#ifdef HAVE_NVCODEC_GST_GL + GstNvH264Dec *self = GST_NV_H264_DEC (decoder); + GstCaps *outcaps; + GstBufferPool *pool = NULL; + guint n, size, min, max; + GstVideoInfo vinfo = { 0, }; + GstStructure *config; + + GST_DEBUG_OBJECT (self, "decide allocation"); + + if (self->output_type == GST_NV_DECOCER_OUTPUT_TYPE_SYSTEM) + return GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation + (decoder, query); + + gst_query_parse_allocation (query, &outcaps, NULL); + n = gst_query_get_n_allocation_pools (query); + if (n > 0) + gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max); + + if (pool && !GST_IS_GL_BUFFER_POOL (pool)) { + gst_object_unref (pool); + pool = NULL; + } + + if (!pool) { + pool = gst_gl_buffer_pool_new (self->gl_context); + + if (outcaps) + gst_video_info_from_caps (&vinfo, outcaps); + size = (guint) vinfo.size; + min = max = 0; + } + + config = gst_buffer_pool_get_config (pool); + gst_buffer_pool_config_set_params (config, outcaps, size, min, max); + gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META); + gst_buffer_pool_set_config (pool, config); + if (n > 0) + gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max); + else + gst_query_add_allocation_pool (query, pool, size, min, max); + gst_object_unref (pool); +#endif + + return GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation + (decoder, query); +} + +static gboolean +gst_nv_h264_dec_src_query (GstVideoDecoder * decoder, GstQuery * query) +{ + GstNvH264Dec *self = GST_NV_H264_DEC (decoder); + + switch (GST_QUERY_TYPE (query)) { + case GST_QUERY_CONTEXT: + if (gst_cuda_handle_context_query (GST_ELEMENT (decoder), + query, self->context)) { + return TRUE; + } +#ifdef HAVE_NVCODEC_GST_GL + if (gst_gl_handle_context_query (GST_ELEMENT (decoder), query, + self->gl_display, self->gl_context, self->other_gl_context)) { + if (self->gl_display) + gst_gl_display_filter_gl_api (GST_GL_DISPLAY (self->gl_display), + SUPPORTED_GL_APIS); + return TRUE; + } +#endif + break; + default: + break; + } + + return GST_VIDEO_DECODER_CLASS (parent_class)->src_query (decoder, query); +} + +static gboolean +gst_nv_h264_dec_new_sequence (GstH264Decoder * decoder, const GstH264SPS * sps, + gint max_dpb_size) +{ + GstNvH264Dec *self = GST_NV_H264_DEC (decoder); + gint crop_width, crop_height; + gboolean modified = FALSE; + + GST_LOG_OBJECT (self, "new sequence"); + + if (sps->frame_cropping_flag) { + crop_width = sps->crop_rect_width; + crop_height = sps->crop_rect_height; + } else { + crop_width = sps->width; + crop_height = sps->height; + } + + if (self->width != crop_width || self->height != crop_height || + self->coded_width != sps->width || self->coded_height != sps->height) { + GST_INFO_OBJECT (self, "resolution changed %dx%d (%dx%d)", + crop_width, crop_height, sps->width, sps->height); + self->width = crop_width; + self->height = crop_height; + self->coded_width = sps->width; + self->coded_height = sps->height; + modified = TRUE; + } + + if (self->bitdepth != sps->bit_depth_luma_minus8 + 8) { + GST_INFO_OBJECT (self, "bitdepth changed"); + self->bitdepth = sps->bit_depth_luma_minus8 + 8; + modified = TRUE; + } + + if (self->chroma_format_idc != sps->chroma_format_idc) { + GST_INFO_OBJECT (self, "chroma format changed"); + self->chroma_format_idc = sps->chroma_format_idc; + modified = TRUE; + } + + if (modified || !self->decoder) { + GstVideoInfo info; + + self->out_format = GST_VIDEO_FORMAT_UNKNOWN; + + if (self->bitdepth == 8) { + if (self->chroma_format_idc == 1) + self->out_format = GST_VIDEO_FORMAT_NV12; + else { + GST_FIXME_OBJECT (self, "Could not support 8bits non-4:2:0 format"); + } + } else if (self->bitdepth == 10) { + if (self->chroma_format_idc == 1) + self->out_format = GST_VIDEO_FORMAT_P010_10LE; + else { + GST_FIXME_OBJECT (self, "Could not support 10bits non-4:2:0 format"); + } + } + + if (self->out_format == GST_VIDEO_FORMAT_UNKNOWN) { + GST_ERROR_OBJECT (self, "Could not support bitdepth/chroma format"); + return FALSE; + } + + gst_clear_object (&self->decoder); + + gst_video_info_set_format (&info, + self->out_format, self->width, self->height); + + /* FIXME: add support cudaVideoCodec_H264_SVC and cudaVideoCodec_H264_MVC */ + self->decoder = gst_nv_decoder_new (self->context, cudaVideoCodec_H264, + &info, + /* Additional 2 buffers for margin */ + max_dpb_size + 2); + + if (!self->decoder) { + GST_ERROR_OBJECT (self, "Failed to create decoder"); + return FALSE; + } + + if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self))) { + GST_ERROR_OBJECT (self, "Failed to negotiate with downstream"); + return FALSE; + } + + self->last_sps = NULL; + self->last_pps = NULL; + memset (&self->params, 0, sizeof (CUVIDPICPARAMS)); + } + + return TRUE; +} + +static gboolean +gst_nv_h264_dec_new_picture (GstH264Decoder * decoder, GstH264Picture * picture) +{ + GstNvH264Dec *self = GST_NV_H264_DEC (decoder); + GstNvDecoderFrame *frame; + + frame = gst_nv_decoder_new_frame (self->decoder); + if (!frame) { + GST_ERROR_OBJECT (self, "No available decoder frame"); + return FALSE; + } + + GST_LOG_OBJECT (self, "New decoder frame %p (index %d)", frame, frame->index); + + gst_h264_picture_set_user_data (picture, + frame, (GDestroyNotify) gst_nv_decoder_frame_free); + + return TRUE; +} + +static GstFlowReturn +gst_nv_h264_dec_output_picture (GstH264Decoder * decoder, + GstH264Picture * picture) +{ + GstNvH264Dec *self = GST_NV_H264_DEC (decoder); + GstVideoCodecFrame *frame = NULL; + GstBuffer *output_buffer = NULL; + GstNvDecoderFrame *decoder_frame; + gboolean ret = FALSE; + + GST_LOG_OBJECT (self, + "Outputting picture %p (poc %d)", picture, picture->pic_order_cnt); + + decoder_frame = + (GstNvDecoderFrame *) gst_h264_picture_get_user_data (picture); + if (!decoder_frame) { + GST_ERROR_OBJECT (self, "No decoder frame in picture %p", picture); + return GST_FLOW_ERROR; + } + + frame = gst_video_decoder_get_frame (GST_VIDEO_DECODER (self), + picture->system_frame_number); + if (!frame) { + GST_ERROR_OBJECT (self, "Failed to retrieve codec frame"); + return GST_FLOW_ERROR; + } + + output_buffer = + gst_video_decoder_allocate_output_buffer (GST_VIDEO_DECODER (self)); + frame->output_buffer = output_buffer; + +#ifdef HAVE_NVCODEC_GST_GL + if (self->output_type == GST_NV_DECOCER_OUTPUT_TYPE_GL) { + ret = gst_nv_decoder_finish_frame (self->decoder, + GST_NV_DECOCER_OUTPUT_TYPE_GL, GST_OBJECT (self->gl_context), + decoder_frame, output_buffer); + + /* FIXME: This is the case where OpenGL context of downstream glbufferpool + * belongs to non-nvidia (or different device). + * There should be enhancement to ensure nvdec has compatible OpenGL context + */ + if (!ret) { + GST_WARNING_OBJECT (self, + "Couldn't copy frame to GL memory, fallback to system memory"); + self->output_type = GST_NV_DECOCER_OUTPUT_TYPE_SYSTEM; + } + } + + if (!ret) +#endif + { + if (!gst_nv_decoder_finish_frame (self->decoder, + GST_NV_DECOCER_OUTPUT_TYPE_SYSTEM, NULL, decoder_frame, + output_buffer)) { + GST_ERROR_OBJECT (self, "Failed to finish frame"); + gst_video_decoder_drop_frame (GST_VIDEO_DECODER (self), frame); + return GST_FLOW_ERROR; + } + } + + return gst_video_decoder_finish_frame (GST_VIDEO_DECODER (self), frame); +} + +static GstNvDecoderFrame * +gst_nv_h264_dec_get_decoder_frame_from_picture (GstNvH264Dec * self, + GstH264Picture * picture) +{ + GstNvDecoderFrame *frame; + + frame = (GstNvDecoderFrame *) gst_h264_picture_get_user_data (picture); + + if (!frame) + GST_DEBUG_OBJECT (self, "current picture does not have decoder frame"); + + return frame; +} + +static void +gst_nv_h264_dec_picture_params_from_sps (GstNvH264Dec * self, + const GstH264SPS * sps, gboolean field_pic, CUVIDH264PICPARAMS * params) +{ + params->residual_colour_transform_flag = sps->separate_colour_plane_flag; + params->MbaffFrameFlag = sps->mb_adaptive_frame_field_flag && field_pic; + +#define COPY_FIELD(f) \ + (params)->f = (sps)->f + + COPY_FIELD (log2_max_frame_num_minus4); + COPY_FIELD (pic_order_cnt_type); + COPY_FIELD (log2_max_pic_order_cnt_lsb_minus4); + COPY_FIELD (delta_pic_order_always_zero_flag); + COPY_FIELD (frame_mbs_only_flag); + COPY_FIELD (direct_8x8_inference_flag); + COPY_FIELD (num_ref_frames); + COPY_FIELD (bit_depth_luma_minus8); + COPY_FIELD (bit_depth_chroma_minus8); + COPY_FIELD (qpprime_y_zero_transform_bypass_flag); + +#undef COPY_FIELD +} + +static void +gst_nv_h264_dec_picture_params_from_pps (GstNvH264Dec * self, + const GstH264PPS * pps, CUVIDH264PICPARAMS * params) +{ + params->second_chroma_qp_index_offset = + (gint8) pps->second_chroma_qp_index_offset; + +#define COPY_FIELD(f) \ + (params)->f = (pps)->f + + COPY_FIELD (entropy_coding_mode_flag); + COPY_FIELD (pic_order_present_flag); + COPY_FIELD (num_ref_idx_l0_active_minus1); + COPY_FIELD (num_ref_idx_l1_active_minus1); + COPY_FIELD (pic_init_qp_minus26); + COPY_FIELD (weighted_pred_flag); + COPY_FIELD (weighted_bipred_idc); + COPY_FIELD (pic_init_qp_minus26); + COPY_FIELD (deblocking_filter_control_present_flag); + COPY_FIELD (redundant_pic_cnt_present_flag); + COPY_FIELD (transform_8x8_mode_flag); + COPY_FIELD (constrained_intra_pred_flag); + COPY_FIELD (chroma_qp_index_offset); +#undef COPY_FIELD + + /* h264parser will copy scaling list from sps to pps regardless of + * pic_scaling_matrix_present_flag */ + g_assert (sizeof (params->WeightScale4x4) == sizeof (pps->scaling_lists_4x4)); + g_assert (sizeof (params->WeightScale8x8[0]) == + sizeof (pps->scaling_lists_8x8[0])); + memcpy (params->WeightScale4x4, pps->scaling_lists_4x4, + sizeof (params->WeightScale4x4)); + memcpy (params->WeightScale8x8[0], pps->scaling_lists_8x8[0], + sizeof (params->WeightScale8x8[0])); + memcpy (params->WeightScale8x8[1], pps->scaling_lists_8x8[3], + sizeof (params->WeightScale8x8[0])); +} + +static void +gst_nv_h264_dec_reset_bitstream_params (GstNvH264Dec * self) +{ + self->bitstream_buffer_offset = 0; + self->num_slices = 0; + + self->params.nBitstreamDataLen = 0; + self->params.pBitstreamData = NULL; + self->params.nNumSlices = 0; + self->params.pSliceDataOffsets = NULL; +} + +static gboolean +gst_nv_h264_dec_start_picture (GstH264Decoder * decoder, + GstH264Picture * picture, GstH264Slice * slice, GstH264Dpb * dpb) +{ + GstNvH264Dec *self = GST_NV_H264_DEC (decoder); + CUVIDPICPARAMS *params = &self->params; + CUVIDH264PICPARAMS *h264_params = ¶ms->CodecSpecific.h264; + const GstH264SliceHdr *slice_header = &slice->header; + const GstH264SPS *sps; + const GstH264PPS *pps; + GstNvDecoderFrame *frame; + GArray *dpb_array; + gint i; + + g_return_val_if_fail (slice_header->pps != NULL, FALSE); + g_return_val_if_fail (slice_header->pps->sequence != NULL, FALSE); + + frame = gst_nv_h264_dec_get_decoder_frame_from_picture (self, picture); + + if (!frame) { + GST_ERROR_OBJECT (self, + "Couldn't get decoder frame frame picture %p", picture); + return FALSE; + } + + gst_nv_h264_dec_reset_bitstream_params (self); + + sps = slice_header->pps->sequence; + pps = slice_header->pps; + + /* FIXME: update sps/pps related params only when it's required */ + params->PicWidthInMbs = sps->pic_width_in_mbs_minus1 + 1; + params->FrameHeightInMbs = sps->pic_height_in_map_units_minus1 + 1; + params->CurrPicIdx = frame->index; + /* TODO: verifiy interlaced */ + params->field_pic_flag = picture->field != GST_H264_PICTURE_FIELD_FRAME; + params->bottom_field_flag = + picture->field == GST_H264_PICTURE_FIELD_BOTTOM_FIELD; + /* TODO: set second_field here */ + params->second_field = 0; + + /* nBitstreamDataLen, pBitstreamData, nNumSlices and pSliceDataOffsets + * will be set later */ + + params->ref_pic_flag = picture->ref; + /* will be updated later, if any slices belong to this frame is not + * intra slice */ + params->intra_pic_flag = 1; + + h264_params->frame_num = picture->frame_num; + h264_params->ref_pic_flag = picture->ref; + /* FIXME: should be updated depending on field type? */ + h264_params->CurrFieldOrderCnt[0] = picture->top_field_order_cnt; + h264_params->CurrFieldOrderCnt[1] = picture->bottom_field_order_cnt; + + if (!self->last_sps || self->last_sps != sps) { + GST_DEBUG_OBJECT (self, "Update params from SPS and PPS"); + gst_nv_h264_dec_picture_params_from_sps (self, + sps, slice_header->field_pic_flag, h264_params); + gst_nv_h264_dec_picture_params_from_pps (self, pps, h264_params); + self->last_sps = sps; + self->last_pps = pps; + } else if (!self->last_pps || self->last_pps != pps) { + GST_DEBUG_OBJECT (self, "Update params from PPS"); + gst_nv_h264_dec_picture_params_from_pps (self, pps, h264_params); + self->last_pps = pps; + } else { + GST_TRACE_OBJECT (self, "SPS and PPS were not updated"); + } + + memset (&h264_params->dpb, 0, sizeof (h264_params->dpb)); + for (i = 0; i < G_N_ELEMENTS (h264_params->dpb); i++) + h264_params->dpb[i].PicIdx = -1; + + dpb_array = gst_h264_dpb_get_pictures_all (dpb); + for (i = 0; i < dpb_array->len && i < G_N_ELEMENTS (h264_params->dpb); i++) { + GstH264Picture *other = g_array_index (dpb_array, GstH264Picture *, i); + GstNvDecoderFrame *other_frame; + gint picture_index = -1; + CUVIDH264DPBENTRY *dpb = &h264_params->dpb[i]; + + if (!other->ref) + continue; + + other_frame = gst_nv_h264_dec_get_decoder_frame_from_picture (self, other); + + if (other_frame) + picture_index = other_frame->index; + + dpb->PicIdx = picture_index; + if (other->long_term) { + dpb->FrameIdx = other->long_term_frame_idx; + dpb->is_long_term = 1; + } else { + dpb->FrameIdx = other->frame_num; + dpb->is_long_term = 0; + } + + dpb->not_existing = other->nonexisting; + if (dpb->not_existing && dpb->PicIdx != -1) { + GST_WARNING_OBJECT (self, + "Non-existing frame has valid picture index %d", dpb->PicIdx); + dpb->PicIdx = -1; + } + + /* FIXME: 1=top_field, 2=bottom_field, 3=both_fields */ + dpb->used_for_reference = 3; + + dpb->FieldOrderCnt[0] = other->top_field_order_cnt; + dpb->FieldOrderCnt[1] = other->bottom_field_order_cnt; + } + + g_array_unref (dpb_array); + + return TRUE; +} + +static gboolean +gst_nv_h264_dec_decode_slice (GstH264Decoder * decoder, + GstH264Picture * picture, GstH264Slice * slice) +{ + GstNvH264Dec *self = GST_NV_H264_DEC (decoder); + gsize new_size; + + GST_LOG_OBJECT (self, "Decode slice, nalu size %u", slice->nalu.size); + + if (self->slice_offsets_alloc_len < self->num_slices + 1) { + self->slice_offsets = (guint *) g_realloc_n (self->slice_offsets, + self->num_slices + 1, sizeof (guint)); + } + self->slice_offsets[self->num_slices] = self->bitstream_buffer_offset; + GST_LOG_OBJECT (self, "Slice offset %u for slice %d", + self->slice_offsets[self->num_slices], self->num_slices); + + self->num_slices++; + + new_size = self->bitstream_buffer_offset + slice->nalu.size + 3; + if (self->bitstream_buffer_alloc_size < new_size) { + self->bitstream_buffer = + (guint8 *) g_realloc (self->bitstream_buffer, new_size); + } + + self->bitstream_buffer[self->bitstream_buffer_offset] = 0; + self->bitstream_buffer[self->bitstream_buffer_offset + 1] = 0; + self->bitstream_buffer[self->bitstream_buffer_offset + 2] = 1; + + memcpy (self->bitstream_buffer + self->bitstream_buffer_offset + 3, + slice->nalu.data + slice->nalu.offset, slice->nalu.size); + self->bitstream_buffer_offset = new_size; + + if (!GST_H264_IS_I_SLICE (&slice->header) && + !GST_H264_IS_SI_SLICE (&slice->header)) + self->params.intra_pic_flag = 0; + + return TRUE; +} + +static gboolean +gst_nv_h264_dec_end_picture (GstH264Decoder * decoder, GstH264Picture * picture) +{ + GstNvH264Dec *self = GST_NV_H264_DEC (decoder); + gboolean ret; + CUVIDPICPARAMS *params = &self->params; + + params->nBitstreamDataLen = self->bitstream_buffer_offset; + params->pBitstreamData = self->bitstream_buffer; + params->nNumSlices = self->num_slices; + params->pSliceDataOffsets = self->slice_offsets; + + GST_LOG_OBJECT (self, "End picture, bitstream len: %" G_GSIZE_FORMAT + ", num slices %d", self->bitstream_buffer_offset, self->num_slices); + + ret = gst_nv_decoder_decode_picture (self->decoder, &self->params); + + if (!ret) + GST_ERROR_OBJECT (self, "Failed to decode picture"); + + return ret; +} + +typedef struct +{ + GstCaps *sink_caps; + GstCaps *src_caps; + guint cuda_device_id; + gboolean is_default; +} GstNvH264DecClassData; + +static void +gst_nv_h264_dec_subclass_init (gpointer klass, GstNvH264DecClassData * cdata) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (klass); + GstNvH264DecClass *nvdec_class = (GstNvH264DecClass *) (klass); + gchar *long_name; + + if (cdata->is_default) { + long_name = g_strdup_printf ("NVDEC H.264 Stateless Decoder"); + } else { + long_name = g_strdup_printf ("NVDEC H.264 Stateless Decoder with device %d", + cdata->cuda_device_id); + } + + gst_element_class_set_metadata (element_class, long_name, + "Codec/Decoder/Video/Hardware", + "Nvidia H.264 video decoder", "Seungha Yang <seungha@centricular.com>"); + g_free (long_name); + + gst_element_class_add_pad_template (element_class, + gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, + cdata->sink_caps)); + gst_element_class_add_pad_template (element_class, + gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, + cdata->src_caps)); + + nvdec_class->cuda_device_id = cdata->cuda_device_id; + + gst_caps_unref (cdata->sink_caps); + gst_caps_unref (cdata->src_caps); + g_free (cdata); +} + +void +gst_nv_h264_dec_register (GstPlugin * plugin, guint device_id, guint rank, + GstCaps * sink_caps, GstCaps * src_caps) +{ + GTypeQuery type_query; + GTypeInfo type_info = { 0, }; + GType subtype; + gchar *type_name; + gchar *feature_name; + GstNvH264DecClassData *cdata; + gboolean is_default = TRUE; + const GValue *value; + GstStructure *s; + + cdata = g_new0 (GstNvH264DecClassData, 1); + cdata->sink_caps = gst_caps_from_string ("video/x-h264, " + "stream-format= (string) { avc, avc3, byte-stream }, " + "alignment= (string) au, profile = (string) { high, main }, " + "framerate = " GST_VIDEO_FPS_RANGE); + + s = gst_caps_get_structure (sink_caps, 0); + value = gst_structure_get_value (s, "width"); + gst_caps_set_value (cdata->sink_caps, "width", value); + + value = gst_structure_get_value (s, "height"); + gst_caps_set_value (cdata->sink_caps, "height", value); + + GST_MINI_OBJECT_FLAG_SET (cdata->sink_caps, + GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED); + cdata->src_caps = gst_caps_ref (src_caps); + cdata->cuda_device_id = device_id; + + g_type_query (GST_TYPE_NV_H264_DEC, &type_query); + memset (&type_info, 0, sizeof (type_info)); + type_info.class_size = type_query.class_size; + type_info.instance_size = type_query.instance_size; + type_info.class_init = (GClassInitFunc) gst_nv_h264_dec_subclass_init; + type_info.class_data = cdata; + + type_name = g_strdup ("GstNvH264StatelessDec"); + feature_name = g_strdup ("nvh264sldec"); + + if (g_type_from_name (type_name) != 0) { + g_free (type_name); + g_free (feature_name); + type_name = g_strdup_printf ("GstNvH264StatelessDevice%dDec", device_id); + feature_name = g_strdup_printf ("nvh264sldevice%ddec", device_id); + + is_default = FALSE; + } + + cdata->is_default = is_default; + subtype = g_type_register_static (GST_TYPE_NV_H264_DEC, + type_name, &type_info, 0); + + /* make lower rank than default device */ + if (rank > 0 && !is_default) + rank--; + + if (!gst_element_register (plugin, feature_name, rank, subtype)) + GST_WARNING ("Failed to register plugin '%s'", type_name); + + g_free (type_name); + g_free (feature_name); +} |