mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-18 15:51:11 +00:00
Code Issues 1 Projects Releases Wiki Activity
gstreamer/subprojects/gst-plugins-bad/sys/nvcodec/gstnvdec.c
Thibault Saunier c033f8fad2 cuda: Factor out a public GstCUDA library 
So applications and elements implemented outside GStreamer can reuse
our infrastructure

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1472>
2022-04-19 16:39:43 +00:00

2096 lines
62 KiB
C
Raw Blame History

/*
* Copyright (C) 2017 Ericsson AB. All rights reserved.
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/cuda/gstcudautils.h>
#include <gst/cuda/gstcudabufferpool.h>
#include "gstcuvidloader.h"
#include "gstnvdec.h"
#include <string.h>
GST_DEBUG_CATEGORY_EXTERN (gst_nvdec_debug);
#define GST_CAT_DEFAULT gst_nvdec_debug
#define DEFAULT_MAX_DISPLAY_DELAY -1
enum
{
PROP_0,
PROP_MAX_DISPLAY_DELAY,
};
#ifdef HAVE_NVCODEC_GST_GL
#define SUPPORTED_GL_APIS (GST_GL_API_OPENGL | GST_GL_API_OPENGL3 | GST_GL_API_GLES2)
static gboolean
gst_nvdec_copy_device_to_gl (GstNvDec * nvdec,
CUVIDPARSERDISPINFO * dispinfo, GstBuffer * output_buffer);
#endif
static gboolean
gst_nvdec_copy_device_to_memory (GstNvDec * nvdec,
CUVIDPARSERDISPINFO * dispinfo, GstBuffer * output_buffer);
#ifdef HAVE_NVCODEC_GST_GL
typedef struct _GstNvDecRegisterResourceData
{
GstMemory *mem;
GstCudaGraphicsResource *resource;
GstNvDec *nvdec;
gboolean ret;
} GstNvDecRegisterResourceData;
static void
register_cuda_resource (GstGLContext * context,
GstNvDecRegisterResourceData * data)
{
GstMemory *mem = data->mem;
GstCudaGraphicsResource *resource = data->resource;
GstNvDec *nvdec = data->nvdec;
GstMapInfo map_info = GST_MAP_INFO_INIT;
GstGLBuffer *gl_buf_obj;
data->ret = FALSE;
if (!gst_cuda_context_push (nvdec->cuda_ctx)) {
GST_WARNING_OBJECT (nvdec, "failed to push CUDA context");
return;
}
if (gst_memory_map (mem, &map_info, GST_MAP_READ | GST_MAP_GL)) {
GstGLMemoryPBO *gl_mem = (GstGLMemoryPBO *) data->mem;
gl_buf_obj = gl_mem->pbo;
GST_LOG_OBJECT (nvdec,
"register glbuffer %d to CUDA resource", gl_buf_obj->id);
/* register resource without read/write only flags, since
* downstream CUDA elements (e.g., nvenc) might want to access
* this resource later. Instead, use map flags during map/unmap */
if (gst_cuda_graphics_resource_register_gl_buffer (resource,
gl_buf_obj->id, CU_GRAPHICS_REGISTER_FLAGS_NONE)) {
data->ret = TRUE;
} else {
GST_WARNING_OBJECT (nvdec, "failed to register memory");
}
gst_memory_unmap (mem, &map_info);
} else {
GST_WARNING_OBJECT (nvdec, "failed to map memory");
}
if (!gst_cuda_context_pop (NULL))
GST_WARNING_OBJECT (nvdec, "failed to unlock CUDA context");
}
static GstCudaGraphicsResource *
ensure_cuda_graphics_resource (GstMemory * mem, GstNvDec * nvdec)
{
GQuark quark;
GstCudaGraphicsResource *cgr_info;
GstNvDecRegisterResourceData data;
if (!gst_is_gl_memory_pbo (mem)) {
GST_WARNING_OBJECT (nvdec, "memory is not GL PBO memory, %s",
mem->allocator->mem_type);
return NULL;
}
quark = gst_cuda_quark_from_id (GST_CUDA_QUARK_GRAPHICS_RESOURCE);
cgr_info = gst_mini_object_get_qdata (GST_MINI_OBJECT (mem), quark);
if (!cgr_info) {
cgr_info = gst_cuda_graphics_resource_new (nvdec->cuda_ctx,
GST_OBJECT (GST_GL_BASE_MEMORY_CAST (mem)->context),
GST_CUDA_GRAPHICS_RESOURCE_GL_BUFFER);
data.mem = mem;
data.resource = cgr_info;
data.nvdec = nvdec;
gst_gl_context_thread_add ((GstGLContext *) cgr_info->graphics_context,
(GstGLContextThreadFunc) register_cuda_resource, &data);
if (!data.ret) {
GST_WARNING_OBJECT (nvdec, "could not register resource");
gst_cuda_graphics_resource_free (cgr_info);
return NULL;
}
gst_mini_object_set_qdata (GST_MINI_OBJECT (mem), quark, cgr_info,
(GDestroyNotify) gst_cuda_graphics_resource_free);
}
return cgr_info;
}
#endif /* HAVE_NVCODEC_GST_GL */
static gboolean gst_nvdec_open (GstVideoDecoder * decoder);
static gboolean gst_nvdec_start (GstVideoDecoder * decoder);
static gboolean gst_nvdec_stop (GstVideoDecoder * decoder);
static gboolean gst_nvdec_close (GstVideoDecoder * decoder);
static gboolean gst_nvdec_set_format (GstVideoDecoder * decoder,
GstVideoCodecState * state);
static GstFlowReturn gst_nvdec_handle_frame (GstVideoDecoder * decoder,
GstVideoCodecFrame * frame);
static gboolean gst_nvdec_decide_allocation (GstVideoDecoder * decoder,
GstQuery * query);
static void gst_nvdec_set_context (GstElement * element, GstContext * context);
static gboolean gst_nvdec_src_query (GstVideoDecoder * decoder,
GstQuery * query);
static gboolean gst_nvdec_flush (GstVideoDecoder * decoder);
static GstFlowReturn gst_nvdec_drain (GstVideoDecoder * decoder);
static GstFlowReturn gst_nvdec_finish (GstVideoDecoder * decoder);
static gboolean gst_nvdec_negotiate (GstVideoDecoder * decoder);
#ifdef HAVE_NVCODEC_GST_GL
static gboolean gst_nvdec_ensure_gl_context (GstNvDec * nvdec);
#endif
#define gst_nvdec_parent_class parent_class
G_DEFINE_ABSTRACT_TYPE (GstNvDec, gst_nvdec, GST_TYPE_VIDEO_DECODER);
static void
gst_nv_dec_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec)
{
GstNvDec *nvdec = GST_NVDEC (object);
switch (prop_id) {
case PROP_MAX_DISPLAY_DELAY:
nvdec->max_display_delay = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_nv_dec_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstNvDec *nvdec = GST_NVDEC (object);
switch (prop_id) {
case PROP_MAX_DISPLAY_DELAY:
g_value_set_int (value, nvdec->max_display_delay);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_nvdec_class_init (GstNvDecClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstVideoDecoderClass *video_decoder_class = GST_VIDEO_DECODER_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gobject_class->set_property = gst_nv_dec_set_property;
gobject_class->get_property = gst_nv_dec_get_property;
video_decoder_class->open = GST_DEBUG_FUNCPTR (gst_nvdec_open);
video_decoder_class->start = GST_DEBUG_FUNCPTR (gst_nvdec_start);
video_decoder_class->stop = GST_DEBUG_FUNCPTR (gst_nvdec_stop);
video_decoder_class->close = GST_DEBUG_FUNCPTR (gst_nvdec_close);
video_decoder_class->set_format = GST_DEBUG_FUNCPTR (gst_nvdec_set_format);
video_decoder_class->handle_frame =
GST_DEBUG_FUNCPTR (gst_nvdec_handle_frame);
video_decoder_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_nvdec_decide_allocation);
video_decoder_class->src_query = GST_DEBUG_FUNCPTR (gst_nvdec_src_query);
video_decoder_class->drain = GST_DEBUG_FUNCPTR (gst_nvdec_drain);
video_decoder_class->flush = GST_DEBUG_FUNCPTR (gst_nvdec_flush);
video_decoder_class->finish = GST_DEBUG_FUNCPTR (gst_nvdec_finish);
video_decoder_class->negotiate = GST_DEBUG_FUNCPTR (gst_nvdec_negotiate);
element_class->set_context = GST_DEBUG_FUNCPTR (gst_nvdec_set_context);
gst_type_mark_as_plugin_api (GST_TYPE_NVDEC, 0);
/**
* GstNvDec:max-display-delay:
*
* Since: 1.20
*/
g_object_class_install_property (gobject_class, PROP_MAX_DISPLAY_DELAY,
g_param_spec_int ("max-display-delay", "Max Display Delay",
"Improves pipelining of decode with display, 0 means no delay "
"(auto = -1)",
-1, G_MAXINT, DEFAULT_MAX_DISPLAY_DELAY,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
gst_nvdec_init (GstNvDec * nvdec)
{
nvdec->max_display_delay = DEFAULT_MAX_DISPLAY_DELAY;
gst_video_decoder_set_packetized (GST_VIDEO_DECODER (nvdec), TRUE);
gst_video_decoder_set_needs_format (GST_VIDEO_DECODER (nvdec), TRUE);
}
static cudaVideoSurfaceFormat
get_cuda_surface_format_from_gst (GstVideoFormat format)
{
switch (format) {
case GST_VIDEO_FORMAT_NV12:
return cudaVideoSurfaceFormat_NV12;
case GST_VIDEO_FORMAT_P010_10LE:
case GST_VIDEO_FORMAT_P010_10BE:
case GST_VIDEO_FORMAT_P016_LE:
case GST_VIDEO_FORMAT_P016_BE:
return cudaVideoSurfaceFormat_P016;
case GST_VIDEO_FORMAT_Y444:
return cudaVideoSurfaceFormat_YUV444;
case GST_VIDEO_FORMAT_Y444_16LE:
case GST_VIDEO_FORMAT_Y444_16BE:
return cudaVideoSurfaceFormat_YUV444_16Bit;
default:
g_assert_not_reached ();
break;
}
return cudaVideoSurfaceFormat_NV12;
}
static guint
calculate_num_decode_surface (cudaVideoCodec codec, guint width, guint height)
{
switch (codec) {
case cudaVideoCodec_VP9:
return 12;
case cudaVideoCodec_H264:
case cudaVideoCodec_H264_SVC:
case cudaVideoCodec_H264_MVC:
return 20;
case cudaVideoCodec_HEVC:{
gint max_dpb_size;
gint MaxLumaPS;
const gint MaxDpbPicBuf = 6;
gint PicSizeInSamplesY;
/* A.4.1 */
MaxLumaPS = 35651584;
PicSizeInSamplesY = width * height;
if (PicSizeInSamplesY <= (MaxLumaPS >> 2))
max_dpb_size = MaxDpbPicBuf * 4;
else if (PicSizeInSamplesY <= (MaxLumaPS >> 1))
max_dpb_size = MaxDpbPicBuf * 2;
else if (PicSizeInSamplesY <= ((3 * MaxLumaPS) >> 2))
max_dpb_size = (MaxDpbPicBuf * 4) / 3;
else
max_dpb_size = MaxDpbPicBuf;
max_dpb_size = MIN (max_dpb_size, 16);
return max_dpb_size + 4;
}
default:
break;
}
return 8;
}
static guint
gst_nvdec_get_max_display_delay (GstNvDec * nvdec)
{
return nvdec->max_display_delay >= 0 ? nvdec->max_display_delay :
(nvdec->is_live ? 0 : 4);
}
static gint64
gst_nvdec_get_latency (GstNvDec * nvdec)
{
gint fps_n, fps_d;
if (!nvdec->input_state)
return 0;
fps_n = GST_VIDEO_INFO_FPS_N (&nvdec->input_state->info);
fps_d = GST_VIDEO_INFO_FPS_D (&nvdec->input_state->info);
/* We assume 25 fps if the input framerate is invalid */
if (fps_n < 1 || fps_d < 1) {
fps_n = 25;
fps_d = 1;
}
return gst_util_uint64_scale_int ((nvdec->num_decode_surface +
gst_nvdec_get_max_display_delay (nvdec)) * GST_SECOND, fps_d, fps_n);
}
/* 0: fail, 1: succeeded, > 1: override dpb size of parser
* (set by CUVIDPARSERPARAMS::ulMaxNumDecodeSurfaces while creating parser) */
static gint CUDAAPI
parser_sequence_callback (GstNvDec * nvdec, CUVIDEOFORMAT * format)
{
guint width, height;
CUVIDDECODECREATEINFO create_info = { 0, };
GstVideoFormat out_format;
GstVideoInfo *in_info = &nvdec->input_state->info;
GstVideoInfo *out_info = &nvdec->out_info;
GstVideoInfo prev_out_info = *out_info;
GstCudaContext *ctx = nvdec->cuda_ctx;
GstStructure *in_s = NULL;
gboolean updata = FALSE;
guint major_api_ver = 0;
guint64 curr_latency, old_latency;
old_latency = gst_nvdec_get_latency (nvdec);
width = format->display_area.right - format->display_area.left;
height = format->display_area.bottom - format->display_area.top;
switch (format->chroma_format) {
case cudaVideoChromaFormat_444:
if (format->bit_depth_luma_minus8 == 0) {
out_format = GST_VIDEO_FORMAT_Y444;
} else if (format->bit_depth_luma_minus8 == 2 ||
format->bit_depth_luma_minus8 == 4) {
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
out_format = GST_VIDEO_FORMAT_Y444_16LE;
#else
out_format = GST_VIDEO_FORMAT_Y444_16BE;
#endif
} else {
GST_ERROR_OBJECT (nvdec, "Unknown 4:4:4 format bitdepth %d",
format->bit_depth_luma_minus8 + 8);
nvdec->last_ret = GST_FLOW_NOT_NEGOTIATED;
return 0;
}
break;
case cudaVideoChromaFormat_420:
if (format->bit_depth_luma_minus8 == 0) {
out_format = GST_VIDEO_FORMAT_NV12;
} else if (format->bit_depth_luma_minus8 == 2) {
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
out_format = GST_VIDEO_FORMAT_P010_10LE;
#else
out_format = GST_VIDEO_FORMAT_P010_10BE;
#endif
} else if (format->bit_depth_luma_minus8 == 4) {
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
out_format = GST_VIDEO_FORMAT_P016_LE;
#else
out_format = GST_VIDEO_FORMAT_P016_BE;
#endif
} else {
GST_ERROR_OBJECT (nvdec, "Unknown 4:2:0 format bitdepth %d",
format->bit_depth_luma_minus8 + 8);
nvdec->last_ret = GST_FLOW_NOT_NEGOTIATED;
return 0;
}
break;
default:
GST_ERROR_OBJECT (nvdec, "unhandled chroma format %d, bitdepth %d",
format->chroma_format, format->bit_depth_luma_minus8 + 8);
nvdec->last_ret = GST_FLOW_NOT_NEGOTIATED;
return 0;
}
GST_DEBUG_OBJECT (nvdec,
"out format: %s", gst_video_format_to_string (out_format));
GST_DEBUG_OBJECT (nvdec, "width: %u, height: %u", width, height);
gst_video_info_set_format (out_info, out_format, width, height);
GST_VIDEO_INFO_FPS_N (out_info) = GST_VIDEO_INFO_FPS_N (in_info);
GST_VIDEO_INFO_FPS_D (out_info) = GST_VIDEO_INFO_FPS_D (in_info);
if (GST_VIDEO_INFO_FPS_N (out_info) < 1 ||
GST_VIDEO_INFO_FPS_D (out_info) < 1) {
GST_VIDEO_INFO_FPS_N (out_info) = format->frame_rate.numerator;
GST_VIDEO_INFO_FPS_D (out_info) = MAX (1, format->frame_rate.denominator);
}
GST_LOG_OBJECT (nvdec,
"Reading colorimetry information full-range %d matrix %d transfer %d primaries %d",
format->video_signal_description.video_full_range_flag,
format->video_signal_description.matrix_coefficients,
format->video_signal_description.transfer_characteristics,
format->video_signal_description.color_primaries);
if (nvdec->input_state->caps)
in_s = gst_caps_get_structure (nvdec->input_state->caps, 0);
/* Set colorimetry when upstream did not provide it */
if (in_s && !gst_structure_has_field (in_s, "colorimetry")) {
GstVideoColorimetry colorimetry = { 0, };
if (format->video_signal_description.video_full_range_flag)
colorimetry.range = GST_VIDEO_COLOR_RANGE_0_255;
else
colorimetry.range = GST_VIDEO_COLOR_RANGE_16_235;
colorimetry.primaries =
gst_video_color_primaries_from_iso
(format->video_signal_description.color_primaries);
colorimetry.transfer =
gst_video_transfer_function_from_iso
(format->video_signal_description.transfer_characteristics);
colorimetry.matrix =
gst_video_color_matrix_from_iso
(format->video_signal_description.matrix_coefficients);
/* Use a colorimetry having at least one valid colorimetry entry,
* because we don't know whether the returned
* colorimetry (by nvdec) was actually parsed information or not.
* Otherwise let GstVideoInfo handle it with default colorimetry */
if (colorimetry.primaries != GST_VIDEO_COLOR_PRIMARIES_UNKNOWN ||
colorimetry.transfer != GST_VIDEO_TRANSFER_UNKNOWN ||
colorimetry.matrix != GST_VIDEO_COLOR_MATRIX_UNKNOWN) {
GST_DEBUG_OBJECT (nvdec,
"Found valid colorimetry, update output colorimetry");
out_info->colorimetry = colorimetry;
}
} else {
out_info->colorimetry = in_info->colorimetry;
}
if (format->progressive_sequence) {
out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
/* nvdec doesn't seem to deal with interlacing with hevc so rely
* on upstream's value */
if (format->codec == cudaVideoCodec_HEVC) {
out_info->interlace_mode = in_info->interlace_mode;
}
} else {
out_info->interlace_mode = GST_VIDEO_INTERLACE_MODE_MIXED;
}
if (gst_cuvid_get_api_version (&major_api_ver, NULL) && major_api_ver >= 9) {
/* min_num_decode_surfaces was introduced in nvcodec sdk 9.0 header */
nvdec->num_decode_surface = format->min_num_decode_surfaces;
GST_DEBUG_OBJECT (nvdec,
"Num decode surface: %d", nvdec->num_decode_surface);
} else {
nvdec->num_decode_surface =
calculate_num_decode_surface (format->codec, width, height);
GST_DEBUG_OBJECT (nvdec,
"Calculated num decode surface: %d", nvdec->num_decode_surface);
}
/* Update the latency if it has changed */
curr_latency = gst_nvdec_get_latency (nvdec);
if (old_latency != curr_latency)
gst_video_decoder_set_latency (GST_VIDEO_DECODER (nvdec), curr_latency,
curr_latency);
if (!nvdec->decoder || !gst_video_info_is_equal (out_info, &prev_out_info)) {
updata = TRUE;
if (!gst_cuda_context_push (ctx)) {
GST_ERROR_OBJECT (nvdec, "failed to lock CUDA context");
goto error;
}
if (nvdec->decoder) {
GST_DEBUG_OBJECT (nvdec, "destroying decoder");
if (!gst_cuda_result (CuvidDestroyDecoder (nvdec->decoder))) {
GST_ERROR_OBJECT (nvdec, "failed to destroy decoder");
goto error;
} else
nvdec->decoder = NULL;
}
GST_DEBUG_OBJECT (nvdec, "creating decoder");
create_info.ulWidth = width;
create_info.ulHeight = height;
create_info.ulNumDecodeSurfaces = nvdec->num_decode_surface;
create_info.CodecType = format->codec;
create_info.ChromaFormat = format->chroma_format;
create_info.ulCreationFlags = cudaVideoCreate_Default;
create_info.display_area.left = format->display_area.left;
create_info.display_area.top = format->display_area.top;
create_info.display_area.right = format->display_area.right;
create_info.display_area.bottom = format->display_area.bottom;
create_info.OutputFormat = get_cuda_surface_format_from_gst (out_format);
create_info.bitDepthMinus8 = format->bit_depth_luma_minus8;
create_info.DeinterlaceMode = cudaVideoDeinterlaceMode_Weave;
create_info.ulTargetWidth = width;
create_info.ulTargetHeight = height;
create_info.ulNumOutputSurfaces = 1;
create_info.target_rect.left = 0;
create_info.target_rect.top = 0;
create_info.target_rect.right = width;
create_info.target_rect.bottom = height;
if (nvdec->decoder
|| !gst_cuda_result (CuvidCreateDecoder (&nvdec->decoder,
&create_info))) {
GST_ERROR_OBJECT (nvdec, "failed to create decoder");
goto error;
}
if (!gst_cuda_context_pop (NULL)) {
GST_ERROR_OBJECT (nvdec, "failed to unlock CUDA context");
goto error;
}
}
if (!gst_pad_has_current_caps (GST_VIDEO_DECODER_SRC_PAD (nvdec)) || updata) {
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (nvdec))) {
nvdec->last_ret = GST_FLOW_NOT_NEGOTIATED;
return 0;
}
}
return nvdec->num_decode_surface;
error:
nvdec->last_ret = GST_FLOW_ERROR;
return 0;
}
static gboolean
gst_nvdec_negotiate (GstVideoDecoder * decoder)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
GstVideoCodecState *state;
GstVideoInfo *vinfo;
GstVideoInfo *out_info = &nvdec->out_info;
gboolean ret;
GST_DEBUG_OBJECT (nvdec, "negotiate");
state = gst_video_decoder_set_output_state (GST_VIDEO_DECODER (nvdec),
GST_VIDEO_INFO_FORMAT (out_info), GST_VIDEO_INFO_WIDTH (out_info),
GST_VIDEO_INFO_HEIGHT (out_info), nvdec->input_state);
vinfo = &state->info;
/* update output info with CUvidparser provided one */
vinfo->interlace_mode = out_info->interlace_mode;
vinfo->fps_n = out_info->fps_n;
vinfo->fps_d = out_info->fps_d;
state->caps = gst_video_info_to_caps (&state->info);
nvdec->mem_type = GST_NVDEC_MEM_TYPE_SYSTEM;
{
GstCaps *caps;
caps = gst_pad_get_allowed_caps (GST_VIDEO_DECODER_SRC_PAD (nvdec));
GST_DEBUG_OBJECT (nvdec, "Allowed caps %" GST_PTR_FORMAT, caps);
if (!caps || gst_caps_is_any (caps)) {
GST_DEBUG_OBJECT (nvdec,
"cannot determine output format, use system memory");
} else {
GstCapsFeatures *features;
guint size = gst_caps_get_size (caps);
guint i;
gboolean have_cuda = FALSE;
gboolean have_gl = FALSE;
for (i = 0; i < size; i++) {
features = gst_caps_get_features (caps, i);
if (features && gst_caps_features_contains (features,
GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY)) {
GST_DEBUG_OBJECT (nvdec, "found CUDA memory feature");
have_cuda = TRUE;
break;
}
#ifdef HAVE_NVCODEC_GST_GL
if (nvdec->gl_display &&
features && gst_caps_features_contains (features,
GST_CAPS_FEATURE_MEMORY_GL_MEMORY)) {
GST_DEBUG_OBJECT (nvdec, "found GL memory feature");
have_gl = TRUE;
}
#endif
}
if (have_cuda)
nvdec->mem_type = GST_NVDEC_MEM_TYPE_CUDA;
else if (have_gl)
nvdec->mem_type = GST_NVDEC_MEM_TYPE_GL;
}
gst_clear_caps (&caps);
}
#ifdef HAVE_NVCODEC_GST_GL
if (nvdec->mem_type == GST_NVDEC_MEM_TYPE_GL &&
!gst_nvdec_ensure_gl_context (nvdec)) {
GST_WARNING_OBJECT (nvdec,
"OpenGL context is not CUDA-compatible, fallback to system memory");
nvdec->mem_type = GST_NVDEC_MEM_TYPE_SYSTEM;
}
#endif
switch (nvdec->mem_type) {
case GST_NVDEC_MEM_TYPE_CUDA:
GST_DEBUG_OBJECT (nvdec, "use cuda memory");
gst_caps_set_features (state->caps, 0,
gst_caps_features_new (GST_CAPS_FEATURE_MEMORY_CUDA_MEMORY, NULL));
break;
#ifdef HAVE_NVCODEC_GST_GL
case GST_NVDEC_MEM_TYPE_GL:
GST_DEBUG_OBJECT (nvdec, "use gl memory");
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);
break;
#endif
default:
GST_DEBUG_OBJECT (nvdec, "use system memory");
break;
}
if (nvdec->output_state)
gst_video_codec_state_unref (nvdec->output_state);
nvdec->output_state = state;
ret = GST_VIDEO_DECODER_CLASS (parent_class)->negotiate (decoder);
if (!ret) {
GST_ERROR_OBJECT (nvdec, "failed to negotiate with downstream");
nvdec->last_ret = GST_FLOW_NOT_NEGOTIATED;
}
return ret;
}
static gboolean CUDAAPI
parser_decode_callback (GstNvDec * nvdec, CUVIDPICPARAMS * params)
{
GList *iter, *pending_frames;
GstCudaContext *ctx = nvdec->cuda_ctx;
GST_LOG_OBJECT (nvdec, "picture index: %u", params->CurrPicIdx);
if (!gst_cuda_context_push (ctx)) {
GST_ERROR_OBJECT (nvdec, "failed to lock CUDA context");
goto error;
}
if (!gst_cuda_result (CuvidDecodePicture (nvdec->decoder, params))) {
GST_ERROR_OBJECT (nvdec, "failed to decode picture");
goto error;
}
if (!gst_cuda_context_pop (NULL)) {
GST_ERROR_OBJECT (nvdec, "failed to unlock CUDA context");
goto error;
}
pending_frames = gst_video_decoder_get_frames (GST_VIDEO_DECODER (nvdec));
/* NOTE: this decode callback could be invoked multiple times for
* one cuvidParseVideoData() call. Most likely it can be related to "decode only"
* frame of VPX codec but no document available.
* In that case, the last decoded frame seems to be displayed */
for (iter = pending_frames; iter; iter = g_list_next (iter)) {
guint id;
GstVideoCodecFrame *frame = (GstVideoCodecFrame *) iter->data;
gboolean set_data = FALSE;
id = GPOINTER_TO_UINT (gst_video_codec_frame_get_user_data (frame));
if (G_UNLIKELY (nvdec->state == GST_NVDEC_STATE_DECODE)) {
if (id) {
GST_LOG_OBJECT (nvdec, "reset the last user data");
set_data = TRUE;
}
} else if (!id) {
set_data = TRUE;
}
if (set_data) {
gst_video_codec_frame_set_user_data (frame,
GUINT_TO_POINTER (params->CurrPicIdx + 1), NULL);
break;
}
}
nvdec->state = GST_NVDEC_STATE_DECODE;
g_list_free_full (pending_frames,
(GDestroyNotify) gst_video_codec_frame_unref);
return TRUE;
error:
nvdec->last_ret = GST_FLOW_ERROR;
return FALSE;
}
static gboolean CUDAAPI
parser_display_callback (GstNvDec * nvdec, CUVIDPARSERDISPINFO * dispinfo)
{
GList *iter, *pending_frames;
GstVideoCodecFrame *frame = NULL;
GstBuffer *output_buffer = NULL;
GstFlowReturn ret = GST_FLOW_OK;
gboolean copy_ret = FALSE;
GST_LOG_OBJECT (nvdec, "picture index: %u", dispinfo->picture_index);
pending_frames = gst_video_decoder_get_frames (GST_VIDEO_DECODER (nvdec));
for (iter = pending_frames; iter; iter = g_list_next (iter)) {
guint id;
GstVideoCodecFrame *tmp = (GstVideoCodecFrame *) iter->data;
id = GPOINTER_TO_UINT (gst_video_codec_frame_get_user_data (tmp));
if (id == dispinfo->picture_index + 1) {
frame = gst_video_codec_frame_ref (tmp);
break;
}
}
g_list_free_full (pending_frames,
(GDestroyNotify) gst_video_codec_frame_unref);
if (G_UNLIKELY (frame == NULL)) {
GST_WARNING_OBJECT (nvdec, "no frame for picture index %u",
dispinfo->picture_index);
output_buffer =
gst_video_decoder_allocate_output_buffer (GST_VIDEO_DECODER (nvdec));
if (!output_buffer) {
GST_ERROR_OBJECT (nvdec, "Couldn't allocate output buffer");
nvdec->last_ret = GST_FLOW_ERROR;
return FALSE;
}
GST_BUFFER_PTS (output_buffer) = dispinfo->timestamp;
GST_BUFFER_DTS (output_buffer) = GST_CLOCK_TIME_NONE;
/* assume buffer duration from framerate */
GST_BUFFER_DURATION (output_buffer) =
gst_util_uint64_scale (GST_SECOND,
GST_VIDEO_INFO_FPS_D (&nvdec->out_info),
GST_VIDEO_INFO_FPS_N (&nvdec->out_info));
} else {
ret = gst_video_decoder_allocate_output_frame (GST_VIDEO_DECODER (nvdec),
frame);
if (ret != GST_FLOW_OK) {
GST_WARNING_OBJECT (nvdec, "failed to allocate output frame");
nvdec->last_ret = ret;
return FALSE;
}
output_buffer = frame->output_buffer;
if (dispinfo->timestamp != frame->pts) {
GST_INFO_OBJECT (nvdec,
"timestamp mismatch, diff: %" GST_STIME_FORMAT,
GST_STIME_ARGS (GST_CLOCK_DIFF (dispinfo->timestamp, frame->pts)));
}
}
#ifdef HAVE_NVCODEC_GST_GL
if (nvdec->mem_type == GST_NVDEC_MEM_TYPE_GL) {
copy_ret = gst_nvdec_copy_device_to_gl (nvdec, dispinfo, 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 (!copy_ret) {
GST_WARNING_OBJECT (nvdec,
"Couldn't copy frame to GL memory, fallback to system memory");
nvdec->mem_type = GST_NVDEC_MEM_TYPE_SYSTEM;
}
}
if (!copy_ret)
#endif
{
copy_ret = gst_nvdec_copy_device_to_memory (nvdec, dispinfo, output_buffer);
}
if (!copy_ret) {
GST_ERROR_OBJECT (nvdec, "failed to copy decoded picture to output buffer");
nvdec->last_ret = GST_FLOW_ERROR;
if (frame)
gst_video_decoder_drop_frame (GST_VIDEO_DECODER (nvdec), frame);
else
gst_buffer_unref (output_buffer);
return FALSE;
}
if (!dispinfo->progressive_frame) {
GST_BUFFER_FLAG_SET (output_buffer, GST_VIDEO_BUFFER_FLAG_INTERLACED);
if (dispinfo->top_field_first) {
GST_BUFFER_FLAG_SET (output_buffer, GST_VIDEO_BUFFER_FLAG_TFF);
}
if (dispinfo->repeat_first_field == -1) {
GST_BUFFER_FLAG_SET (output_buffer, GST_VIDEO_BUFFER_FLAG_ONEFIELD);
} else {
GST_BUFFER_FLAG_SET (output_buffer, GST_VIDEO_BUFFER_FLAG_RFF);
}
}
if (frame) {
ret = gst_video_decoder_finish_frame (GST_VIDEO_DECODER (nvdec), frame);
} else {
ret = gst_pad_push (GST_VIDEO_DECODER_SRC_PAD (nvdec), output_buffer);
}
if (ret != GST_FLOW_OK) {
GST_DEBUG_OBJECT (nvdec, "failed to finish frame %s",
gst_flow_get_name (ret));
nvdec->last_ret = ret;
return FALSE;
}
return TRUE;
}
static gboolean
gst_nvdec_open (GstVideoDecoder * decoder)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
GstNvDecClass *klass = GST_NVDEC_GET_CLASS (nvdec);
CUresult cuda_ret;
GST_DEBUG_OBJECT (nvdec, "creating CUDA context");
if (!gst_cuda_ensure_element_context (GST_ELEMENT_CAST (decoder),
klass->cuda_device_id, &nvdec->cuda_ctx)) {
GST_ERROR_OBJECT (nvdec, "failed to create CUDA context");
return FALSE;
}
if (gst_cuda_context_push (nvdec->cuda_ctx)) {
cuda_ret = CuStreamCreate (&nvdec->cuda_stream, CU_STREAM_DEFAULT);
if (!gst_cuda_result (cuda_ret)) {
GST_WARNING_OBJECT (nvdec,
"Could not create CUDA stream, will use default stream");
nvdec->cuda_stream = NULL;
}
gst_cuda_context_pop (NULL);
}
#if HAVE_NVCODEC_GST_GL
gst_gl_ensure_element_data (GST_ELEMENT (nvdec),
&nvdec->gl_display, &nvdec->other_gl_context);
if (nvdec->gl_display)
gst_gl_display_filter_gl_api (GST_GL_DISPLAY (nvdec->gl_display),
SUPPORTED_GL_APIS);
#endif
return TRUE;
}
static gboolean
gst_nvdec_start (GstVideoDecoder * decoder)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
GstNvDecClass *klass = GST_NVDEC_GET_CLASS (nvdec);
nvdec->state = GST_NVDEC_STATE_INIT;
nvdec->last_ret = GST_FLOW_OK;
gst_video_info_init (&nvdec->out_info);
if (klass->codec_type == cudaVideoCodec_H264)
nvdec->h264_parser = gst_h264_nal_parser_new ();
else if (klass->codec_type == cudaVideoCodec_HEVC)
nvdec->h265_parser = gst_h265_parser_new ();
return TRUE;
}
static gboolean
maybe_destroy_decoder_and_parser (GstNvDec * nvdec)
{
gboolean ret = TRUE;
if (!gst_cuda_context_push (nvdec->cuda_ctx)) {
GST_ERROR_OBJECT (nvdec, "failed to lock CUDA context");
return FALSE;
}
if (nvdec->decoder) {
GST_DEBUG_OBJECT (nvdec, "destroying decoder");
ret = gst_cuda_result (CuvidDestroyDecoder (nvdec->decoder));
nvdec->decoder = NULL;
if (!ret)
GST_ERROR_OBJECT (nvdec, "failed to destroy decoder");
}
if (nvdec->parser) {
GST_DEBUG_OBJECT (nvdec, "destroying parser");
if (!gst_cuda_result (CuvidDestroyVideoParser (nvdec->parser))) {
GST_ERROR_OBJECT (nvdec, "failed to destroy parser");
ret = FALSE;
}
nvdec->parser = NULL;
}
if (!gst_cuda_context_pop (NULL)) {
GST_WARNING_OBJECT (nvdec, "failed to pop CUDA context");
}
return ret;
}
static void
gst_nvdec_clear_codec_data (GstNvDec * self)
{
GstNvDecClass *klass = GST_NVDEC_GET_CLASS (self);
guint i;
if (klass->codec_type == cudaVideoCodec_HEVC) {
for (i = 0; i < G_N_ELEMENTS (self->vps_nals); i++) {
gst_clear_buffer (&self->vps_nals[i]);
}
}
if (klass->codec_type == cudaVideoCodec_HEVC ||
klass->codec_type == cudaVideoCodec_H264) {
for (i = 0; i < G_N_ELEMENTS (self->sps_nals); i++) {
gst_clear_buffer (&self->sps_nals[i]);
}
for (i = 0; i < G_N_ELEMENTS (self->pps_nals); i++) {
gst_clear_buffer (&self->pps_nals[i]);
}
}
gst_clear_buffer (&self->codec_data);
self->need_codec_data = TRUE;
}
static gboolean
gst_nvdec_stop (GstVideoDecoder * decoder)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
GST_DEBUG_OBJECT (nvdec, "stop");
if (!maybe_destroy_decoder_and_parser (nvdec))
return FALSE;
#ifdef HAVE_NVCODEC_GST_GL
gst_clear_object (&nvdec->gl_context);
gst_clear_object (&nvdec->other_gl_context);
gst_clear_object (&nvdec->gl_display);
#endif
g_clear_pointer (&nvdec->input_state, gst_video_codec_state_unref);
g_clear_pointer (&nvdec->output_state, gst_video_codec_state_unref);
g_clear_pointer (&nvdec->h264_parser, gst_h264_nal_parser_free);
g_clear_pointer (&nvdec->h265_parser, gst_h265_parser_free);
gst_nvdec_clear_codec_data (nvdec);
return TRUE;
}
static gboolean
gst_nvdec_close (GstVideoDecoder * decoder)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
if (nvdec->cuda_ctx && nvdec->cuda_stream) {
if (gst_cuda_context_push (nvdec->cuda_ctx)) {
gst_cuda_result (CuStreamDestroy (nvdec->cuda_stream));
gst_cuda_context_pop (NULL);
}
}
gst_clear_object (&nvdec->cuda_ctx);
nvdec->cuda_stream = NULL;
return TRUE;
}
static gboolean
gst_nvdec_set_format (GstVideoDecoder * decoder, GstVideoCodecState * state)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
GstNvDecClass *klass = GST_NVDEC_GET_CLASS (decoder);
CUVIDPARSERPARAMS parser_params = { 0, };
GstQuery *query;
gboolean ret = TRUE;
GST_DEBUG_OBJECT (nvdec, "set format");
if (nvdec->input_state)
gst_video_codec_state_unref (nvdec->input_state);
nvdec->input_state = gst_video_codec_state_ref (state);
if (!maybe_destroy_decoder_and_parser (nvdec))
return FALSE;
/* Check if pipeline is live */
nvdec->is_live = FALSE;
query = gst_query_new_latency ();
if (gst_pad_peer_query (GST_VIDEO_DECODER_SINK_PAD (decoder), query))
gst_query_parse_latency (query, &nvdec->is_live, NULL, NULL);
gst_query_unref (query);
parser_params.CodecType = klass->codec_type;
/* ulMaxNumDecodeSurfaces will be updated by the return value of
* SequenceCallback */
parser_params.ulMaxNumDecodeSurfaces = 1;
parser_params.ulErrorThreshold = 100;
parser_params.ulMaxDisplayDelay = gst_nvdec_get_max_display_delay (nvdec);
parser_params.ulClockRate = GST_SECOND;
parser_params.pUserData = nvdec;
parser_params.pfnSequenceCallback =
(PFNVIDSEQUENCECALLBACK) parser_sequence_callback;
parser_params.pfnDecodePicture =
(PFNVIDDECODECALLBACK) parser_decode_callback;
parser_params.pfnDisplayPicture =
(PFNVIDDISPLAYCALLBACK) parser_display_callback;
gst_cuda_context_push (nvdec->cuda_ctx);
GST_DEBUG_OBJECT (nvdec, "creating parser");
if (!gst_cuda_result (CuvidCreateVideoParser (&nvdec->parser,
&parser_params))) {
GST_ERROR_OBJECT (nvdec, "failed to create parser");
ret = FALSE;
}
gst_cuda_context_pop (NULL);
/* store codec data */
gst_nvdec_clear_codec_data (nvdec);
if (ret && nvdec->input_state->caps) {
GstStructure *str;
str = gst_caps_get_structure (nvdec->input_state->caps, 0);
if (klass->codec_type == cudaVideoCodec_MPEG4) {
const GValue *codec_data_value;
codec_data_value = gst_structure_get_value (str, "codec_data");
if (codec_data_value && GST_VALUE_HOLDS_BUFFER (codec_data_value)) {
GstBuffer *codec_data = gst_value_get_buffer (codec_data_value);
gst_buffer_replace (&nvdec->codec_data, codec_data);
}
}
/* For all CODEC we get complete picture ... */
nvdec->recv_complete_picture = TRUE;
/* Except for JPEG, for which it depends on the caps */
if (klass->codec_type == cudaVideoCodec_JPEG) {
gboolean parsed;
if (gst_structure_get_boolean (str, "parsed", &parsed))
nvdec->recv_complete_picture = parsed;
else
nvdec->recv_complete_picture = FALSE;
}
}
return ret;
}
#ifdef HAVE_NVCODEC_GST_GL
typedef struct
{
GstNvDec *nvdec;
CUVIDPARSERDISPINFO *dispinfo;
gboolean ret;
GstBuffer *output_buffer;
} GstNvDecCopyToGLData;
static void
copy_video_frame_to_gl_textures (GstGLContext * context,
GstNvDecCopyToGLData * data)
{
GstNvDec *nvdec = data->nvdec;
CUVIDPARSERDISPINFO *dispinfo = data->dispinfo;
GstCudaGraphicsResource **resources;
guint num_resources;
CUVIDPROCPARAMS proc_params = { 0, };
guintptr dptr;
guint pitch, i;
CUDA_MEMCPY2D mcpy2d = { 0, };
GstVideoInfo *info = &nvdec->output_state->info;
GST_LOG_OBJECT (nvdec, "picture index: %u", dispinfo->picture_index);
proc_params.progressive_frame = dispinfo->progressive_frame;
proc_params.top_field_first = dispinfo->top_field_first;
proc_params.unpaired_field = dispinfo->repeat_first_field == -1;
data->ret = TRUE;
num_resources = gst_buffer_n_memory (data->output_buffer);
resources = g_newa (GstCudaGraphicsResource *, num_resources);
for (i = 0; i < num_resources; i++) {
GstMemory *mem;
mem = gst_buffer_peek_memory (data->output_buffer, i);
resources[i] = ensure_cuda_graphics_resource (mem, nvdec);
if (!resources[i]) {
GST_WARNING_OBJECT (nvdec, "could not register %dth memory", i);
data->ret = FALSE;
return;
}
/* Need PBO -> texture */
GST_MINI_OBJECT_FLAG_SET (mem, GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD);
}
if (!gst_cuda_context_push (nvdec->cuda_ctx)) {
GST_WARNING_OBJECT (nvdec, "failed to lock CUDA context");
data->ret = FALSE;
return;
}
if (!gst_cuda_result (CuvidMapVideoFrame (nvdec->decoder,
dispinfo->picture_index, &dptr, &pitch, &proc_params))) {
GST_WARNING_OBJECT (nvdec, "failed to map CUDA video frame");
data->ret = FALSE;
goto unlock_cuda_context;
}
mcpy2d.srcMemoryType = CU_MEMORYTYPE_DEVICE;
mcpy2d.srcPitch = pitch;
mcpy2d.dstMemoryType = CU_MEMORYTYPE_DEVICE;
for (i = 0; i < num_resources; i++) {
CUdeviceptr cuda_ptr;
gsize size;
CUgraphicsResource cuda_resource =
gst_cuda_graphics_resource_map (resources[i], nvdec->cuda_stream,
CU_GRAPHICS_MAP_RESOURCE_FLAGS_WRITE_DISCARD);
if (!cuda_resource) {
GST_WARNING_OBJECT (nvdec, "failed to map CUDA resources");
data->ret = FALSE;
goto unmap_video_frame;
}
if (!gst_cuda_result (CuGraphicsResourceGetMappedPointer (&cuda_ptr, &size,
cuda_resource))) {
GST_WARNING_OBJECT (nvdec, "failed to map CUDA resource");
data->ret = FALSE;
break;
}
mcpy2d.dstPitch = GST_VIDEO_INFO_PLANE_STRIDE (info, i);
mcpy2d.WidthInBytes = GST_VIDEO_INFO_COMP_WIDTH (info, i)
* GST_VIDEO_INFO_COMP_PSTRIDE (info, i);
mcpy2d.srcDevice = dptr + (i * pitch * GST_VIDEO_INFO_HEIGHT (info));
mcpy2d.dstDevice = cuda_ptr;
mcpy2d.Height = GST_VIDEO_INFO_COMP_HEIGHT (info, i);
if (!gst_cuda_result (CuMemcpy2DAsync (&mcpy2d, nvdec->cuda_stream))) {
GST_WARNING_OBJECT (nvdec, "memcpy to mapped array failed");
data->ret = FALSE;
}
}
gst_cuda_result (CuStreamSynchronize (nvdec->cuda_stream));
unmap_video_frame:
for (i = 0; i < num_resources; i++) {
gst_cuda_graphics_resource_unmap (resources[i], nvdec->cuda_stream);
}
if (!gst_cuda_result (CuvidUnmapVideoFrame (nvdec->decoder, dptr)))
GST_WARNING_OBJECT (nvdec, "failed to unmap CUDA video frame");
unlock_cuda_context:
if (!gst_cuda_context_pop (NULL))
GST_WARNING_OBJECT (nvdec, "failed to unlock CUDA context");
}
static gboolean
gst_nvdec_copy_device_to_gl (GstNvDec * nvdec,
CUVIDPARSERDISPINFO * dispinfo, GstBuffer * output_buffer)
{
GstNvDecCopyToGLData data = { 0, };
data.nvdec = nvdec;
data.dispinfo = dispinfo;
data.output_buffer = output_buffer;
gst_gl_context_thread_add (nvdec->gl_context,
(GstGLContextThreadFunc) copy_video_frame_to_gl_textures, &data);
return data.ret;
}
#endif
static gboolean
gst_nvdec_copy_device_to_memory (GstNvDec * nvdec,
CUVIDPARSERDISPINFO * dispinfo, GstBuffer * output_buffer)
{
CUVIDPROCPARAMS params = { 0, };
CUDA_MEMCPY2D copy_params = { 0, };
guintptr dptr;
guint pitch;
GstVideoFrame video_frame;
GstVideoInfo *info = &nvdec->output_state->info;
gint i;
GstMemory *mem;
gboolean use_device_copy = FALSE;
GstMapFlags map_flags = GST_MAP_WRITE;
if (nvdec->mem_type == GST_NVDEC_MEM_TYPE_CUDA &&
(mem = gst_buffer_peek_memory (output_buffer, 0)) &&
gst_is_cuda_memory (mem)) {
map_flags |= GST_MAP_CUDA;
use_device_copy = TRUE;
}
if (!gst_video_frame_map (&video_frame, info, output_buffer, map_flags)) {
GST_ERROR_OBJECT (nvdec, "frame map failure");
return FALSE;
}
if (!gst_cuda_context_push (nvdec->cuda_ctx)) {
gst_video_frame_unmap (&video_frame);
GST_WARNING_OBJECT (nvdec, "failed to lock CUDA context");
return FALSE;
}
params.progressive_frame = dispinfo->progressive_frame;
params.second_field = dispinfo->repeat_first_field + 1;
params.top_field_first = dispinfo->top_field_first;
params.unpaired_field = dispinfo->repeat_first_field < 0;
if (!gst_cuda_result (CuvidMapVideoFrame (nvdec->decoder,
dispinfo->picture_index, &dptr, &pitch, &params))) {
GST_ERROR_OBJECT (nvdec, "failed to map video frame");
gst_cuda_context_pop (NULL);
return FALSE;
}
copy_params.srcMemoryType = CU_MEMORYTYPE_DEVICE;
copy_params.srcPitch = pitch;
copy_params.dstMemoryType =
use_device_copy ? CU_MEMORYTYPE_DEVICE : CU_MEMORYTYPE_HOST;
for (i = 0; i < GST_VIDEO_INFO_N_PLANES (info); i++) {
copy_params.srcDevice = dptr + (i * pitch * GST_VIDEO_INFO_HEIGHT (info));
if (use_device_copy) {
copy_params.dstDevice =
(CUdeviceptr) GST_VIDEO_FRAME_PLANE_DATA (&video_frame, i);
} else {
copy_params.dstHost = GST_VIDEO_FRAME_PLANE_DATA (&video_frame, i);
}
copy_params.dstPitch = GST_VIDEO_FRAME_PLANE_STRIDE (&video_frame, i);
copy_params.WidthInBytes = GST_VIDEO_INFO_COMP_WIDTH (info, i)
* GST_VIDEO_INFO_COMP_PSTRIDE (info, i);
copy_params.Height = GST_VIDEO_INFO_COMP_HEIGHT (info, i);
if (!gst_cuda_result (CuMemcpy2DAsync (&copy_params, nvdec->cuda_stream))) {
GST_ERROR_OBJECT (nvdec, "failed to copy %dth plane", i);
CuvidUnmapVideoFrame (nvdec->decoder, dptr);
gst_video_frame_unmap (&video_frame);
gst_cuda_context_pop (NULL);
return FALSE;
}
}
gst_cuda_result (CuStreamSynchronize (nvdec->cuda_stream));
gst_video_frame_unmap (&video_frame);
if (!gst_cuda_result (CuvidUnmapVideoFrame (nvdec->decoder, dptr)))
GST_WARNING_OBJECT (nvdec, "failed to unmap video frame");
if (!gst_cuda_context_pop (NULL))
GST_WARNING_OBJECT (nvdec, "failed to unlock CUDA context");
return TRUE;
}
static void
gst_nvdec_store_h264_nal (GstNvDec * self, guint id,
GstH264NalUnitType nal_type, GstH264NalUnit * nalu)
{
GstBuffer *buf, **store;
guint size = nalu->size, store_size;
static const guint8 start_code[] = { 0, 0, 1 };
if (nal_type == GST_H264_NAL_SPS || nal_type == GST_H264_NAL_SUBSET_SPS) {
store_size = GST_H264_MAX_SPS_COUNT;
store = self->sps_nals;
GST_DEBUG_OBJECT (self, "storing sps %u", id);
} else if (nal_type == GST_H264_NAL_PPS) {
store_size = GST_H264_MAX_PPS_COUNT;
store = self->pps_nals;
GST_DEBUG_OBJECT (self, "storing pps %u", id);
} else {
return;
}
if (id >= store_size) {
GST_DEBUG_OBJECT (self, "unable to store nal, id out-of-range %d", id);
return;
}
buf = gst_buffer_new_allocate (NULL, size + sizeof (start_code), NULL);
gst_buffer_fill (buf, 0, start_code, sizeof (start_code));
gst_buffer_fill (buf, sizeof (start_code), nalu->data + nalu->offset, size);
if (store[id])
gst_buffer_unref (store[id]);
store[id] = buf;
}
static GstBuffer *
gst_nvdec_handle_h264_buffer (GstNvDec * self, GstBuffer * buffer)
{
GstH264NalParser *parser = self->h264_parser;
GstH264NalUnit nalu;
GstH264ParserResult pres;
GstMapInfo map;
gboolean have_sps = FALSE;
gboolean have_pps = FALSE;
guint i;
GstBuffer *new_buf;
if (!gst_buffer_map (buffer, &map, GST_MAP_READ)) {
GST_WARNING_OBJECT (self, "Failed to map input buffer");
return gst_buffer_ref (buffer);
}
memset (&nalu, 0, sizeof (GstH264NalUnit));
do {
pres = gst_h264_parser_identify_nalu (parser,
map.data, nalu.offset + nalu.size, map.size, &nalu);
if (pres == GST_H264_PARSER_NO_NAL_END)
pres = GST_H264_PARSER_OK;
switch (nalu.type) {
case GST_H264_NAL_SPS:
case GST_H264_NAL_SUBSET_SPS:{
GstH264SPS sps;
if (nalu.type == GST_H264_NAL_SPS) {
pres = gst_h264_parser_parse_sps (parser, &nalu, &sps);
} else {
pres = gst_h264_parser_parse_subset_sps (parser, &nalu, &sps);
}
if (pres != GST_H264_PARSER_OK)
break;
have_sps = TRUE;
gst_nvdec_store_h264_nal (self, sps.id, nalu.type, &nalu);
gst_h264_sps_clear (&sps);
break;
}
case GST_H264_NAL_PPS:{
GstH264PPS pps;
pres = gst_h264_parser_parse_pps (parser, &nalu, &pps);
if (pres != GST_H264_PARSER_OK)
break;
have_pps = TRUE;
gst_nvdec_store_h264_nal (self, pps.id, nalu.type, &nalu);
gst_h264_pps_clear (&pps);
break;
}
default:
break;
}
} while (pres == GST_H264_PARSER_OK);
gst_buffer_unmap (buffer, &map);
if (!self->need_codec_data || (have_sps && have_pps)) {
self->need_codec_data = FALSE;
return gst_buffer_ref (buffer);
}
new_buf = gst_buffer_new ();
if (!have_sps) {
for (i = 0; i < GST_H264_MAX_SPS_COUNT; i++) {
if (!self->sps_nals[i])
continue;
have_sps = TRUE;
new_buf = gst_buffer_append (new_buf, gst_buffer_ref (self->sps_nals[i]));
}
}
if (!have_pps) {
for (i = 0; i < GST_H264_MAX_PPS_COUNT; i++) {
if (!self->pps_nals[i])
continue;
have_pps = TRUE;
new_buf = gst_buffer_append (new_buf, gst_buffer_ref (self->pps_nals[i]));
}
}
new_buf = gst_buffer_append (new_buf, gst_buffer_ref (buffer));
if (have_sps && have_pps)
self->need_codec_data = FALSE;
return new_buf;
}
static void
gst_nvdec_store_h265_nal (GstNvDec * self, guint id,
GstH265NalUnitType nal_type, GstH265NalUnit * nalu)
{
GstBuffer *buf, **store;
guint size = nalu->size, store_size;
static const guint8 start_code[] = { 0, 0, 1 };
if (nal_type == GST_H265_NAL_VPS) {
store_size = GST_H265_MAX_VPS_COUNT;
store = self->vps_nals;
GST_DEBUG_OBJECT (self, "storing vps %u", id);
} else if (nal_type == GST_H265_NAL_SPS) {
store_size = GST_H265_MAX_SPS_COUNT;
store = self->sps_nals;
GST_DEBUG_OBJECT (self, "storing sps %u", id);
} else if (nal_type == GST_H265_NAL_PPS) {
store_size = GST_H265_MAX_PPS_COUNT;
store = self->pps_nals;
GST_DEBUG_OBJECT (self, "storing pps %u", id);
} else {
return;
}
if (id >= store_size) {
GST_DEBUG_OBJECT (self, "unable to store nal, id out-of-range %d", id);
return;
}
buf = gst_buffer_new_allocate (NULL, size + sizeof (start_code), NULL);
gst_buffer_fill (buf, 0, start_code, sizeof (start_code));
gst_buffer_fill (buf, sizeof (start_code), nalu->data + nalu->offset, size);
if (store[id])
gst_buffer_unref (store[id]);
store[id] = buf;
}
static GstBuffer *
gst_nvdec_handle_h265_buffer (GstNvDec * self, GstBuffer * buffer)
{
GstH265Parser *parser = self->h265_parser;
GstH265NalUnit nalu;
GstH265ParserResult pres;
GstMapInfo map;
gboolean have_vps = FALSE;
gboolean have_sps = FALSE;
gboolean have_pps = FALSE;
GstBuffer *new_buf;
guint i;
if (!gst_buffer_map (buffer, &map, GST_MAP_READ)) {
GST_WARNING_OBJECT (self, "Failed to map input buffer");
return gst_buffer_ref (buffer);
}
memset (&nalu, 0, sizeof (GstH265NalUnit));
do {
pres = gst_h265_parser_identify_nalu (parser,
map.data, nalu.offset + nalu.size, map.size, &nalu);
if (pres == GST_H265_PARSER_NO_NAL_END)
pres = GST_H265_PARSER_OK;
switch (nalu.type) {
case GST_H265_NAL_VPS:{
GstH265VPS vps;
pres = gst_h265_parser_parse_vps (parser, &nalu, &vps);
if (pres != GST_H265_PARSER_OK)
break;
have_vps = TRUE;
gst_nvdec_store_h265_nal (self, vps.id, nalu.type, &nalu);
break;
}
case GST_H265_NAL_SPS:{
GstH265SPS sps;
pres = gst_h265_parser_parse_sps (parser, &nalu, &sps, FALSE);
if (pres != GST_H265_PARSER_OK)
break;
have_sps = TRUE;
gst_nvdec_store_h265_nal (self, sps.id, nalu.type, &nalu);
break;
}
case GST_H265_NAL_PPS:{
GstH265PPS pps;
pres = gst_h265_parser_parse_pps (parser, &nalu, &pps);
if (pres != GST_H265_PARSER_OK)
break;
have_pps = TRUE;
gst_nvdec_store_h265_nal (self, pps.id, nalu.type, &nalu);
break;
}
default:
break;
}
} while (pres == GST_H265_PARSER_OK);
gst_buffer_unmap (buffer, &map);
if (!self->need_codec_data || (have_sps && have_pps)) {
self->need_codec_data = FALSE;
return gst_buffer_ref (buffer);
}
new_buf = gst_buffer_new ();
if (!have_vps) {
for (i = 0; i < GST_H265_MAX_VPS_COUNT; i++) {
if (!self->vps_nals[i])
continue;
new_buf = gst_buffer_append (new_buf, gst_buffer_ref (self->vps_nals[i]));
}
}
if (!have_sps) {
for (i = 0; i < GST_H265_MAX_SPS_COUNT; i++) {
if (!self->sps_nals[i])
continue;
have_sps = TRUE;
new_buf = gst_buffer_append (new_buf, gst_buffer_ref (self->sps_nals[i]));
}
}
if (!have_pps) {
for (i = 0; i < GST_H265_MAX_PPS_COUNT; i++) {
if (!self->pps_nals[i])
continue;
have_pps = TRUE;
new_buf = gst_buffer_append (new_buf, gst_buffer_ref (self->pps_nals[i]));
}
}
if (have_sps && have_pps)
self->need_codec_data = FALSE;
return gst_buffer_append (new_buf, gst_buffer_ref (buffer));
}
static GstBuffer *
gst_nvdec_process_input (GstNvDec * self, GstBuffer * inbuf)
{
GstNvDecClass *klass = GST_NVDEC_GET_CLASS (self);
gboolean parse_nal = FALSE;
if (!GST_BUFFER_FLAG_IS_SET (inbuf, GST_BUFFER_FLAG_DELTA_UNIT) ||
self->need_codec_data) {
parse_nal = TRUE;
}
if (klass->codec_type == cudaVideoCodec_MPEG4 &&
self->codec_data && GST_BUFFER_IS_DISCONT (inbuf)) {
return gst_buffer_append (gst_buffer_ref (self->codec_data),
gst_buffer_ref (inbuf));
} else if (klass->codec_type == cudaVideoCodec_H264 && parse_nal) {
return gst_nvdec_handle_h264_buffer (self, inbuf);
} else if (klass->codec_type == cudaVideoCodec_HEVC && parse_nal) {
return gst_nvdec_handle_h265_buffer (self, inbuf);
}
return gst_buffer_ref (inbuf);
}
static GstFlowReturn
gst_nvdec_handle_frame (GstVideoDecoder * decoder, GstVideoCodecFrame * frame)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
GstMapInfo map_info = GST_MAP_INFO_INIT;
CUVIDSOURCEDATAPACKET packet = { 0, };
GstBuffer *in_buffer;
GST_LOG_OBJECT (nvdec, "handle frame");
/* initialize with zero to keep track of frames */
gst_video_codec_frame_set_user_data (frame, GUINT_TO_POINTER (0), NULL);
in_buffer = gst_nvdec_process_input (nvdec, frame->input_buffer);
if (!gst_buffer_map (in_buffer, &map_info, GST_MAP_READ)) {
GST_ERROR_OBJECT (nvdec, "failed to map input buffer");
gst_buffer_unref (in_buffer);
gst_video_codec_frame_unref (frame);
return GST_FLOW_ERROR;
}
packet.payload_size = (gulong) map_info.size;
packet.payload = map_info.data;
packet.timestamp = frame->pts;
packet.flags |= CUVID_PKT_TIMESTAMP;
if (nvdec->recv_complete_picture)
packet.flags |= CUVID_PKT_ENDOFPICTURE;
nvdec->state = GST_NVDEC_STATE_PARSE;
nvdec->last_ret = GST_FLOW_OK;
if (!gst_cuda_result (CuvidParseVideoData (nvdec->parser, &packet)))
GST_WARNING_OBJECT (nvdec, "parser failed");
gst_buffer_unmap (in_buffer, &map_info);
gst_buffer_unref (in_buffer);
gst_video_codec_frame_unref (frame);
return nvdec->last_ret;
}
static gboolean
gst_nvdec_flush (GstVideoDecoder * decoder)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
CUVIDSOURCEDATAPACKET packet = { 0, };
GST_DEBUG_OBJECT (nvdec, "flush");
packet.payload_size = 0;
packet.payload = NULL;
packet.flags = CUVID_PKT_ENDOFSTREAM;
nvdec->state = GST_NVDEC_STATE_PARSE;
nvdec->last_ret = GST_FLOW_OK;
if (nvdec->parser
&& !gst_cuda_result (CuvidParseVideoData (nvdec->parser, &packet)))
GST_WARNING_OBJECT (nvdec, "parser failed");
nvdec->need_codec_data = TRUE;
return TRUE;
}
static GstFlowReturn
gst_nvdec_drain (GstVideoDecoder * decoder)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
CUVIDSOURCEDATAPACKET packet = { 0, };
GST_DEBUG_OBJECT (nvdec, "draining decoder");
packet.payload_size = 0;
packet.payload = NULL;
packet.flags = CUVID_PKT_ENDOFSTREAM;
nvdec->state = GST_NVDEC_STATE_PARSE;
nvdec->last_ret = GST_FLOW_OK;
if (nvdec->parser
&& !gst_cuda_result (CuvidParseVideoData (nvdec->parser, &packet)))
GST_WARNING_OBJECT (nvdec, "parser failed");
nvdec->need_codec_data = TRUE;
return nvdec->last_ret;
}
static GstFlowReturn
gst_nvdec_finish (GstVideoDecoder * decoder)
{
GST_DEBUG_OBJECT (decoder, "finish");
return gst_nvdec_drain (decoder);
}
#ifdef HAVE_NVCODEC_GST_GL
static void
gst_nvdec_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_nvdec_ensure_gl_context (GstNvDec * nvdec)
{
gboolean ret;
if (!nvdec->gl_display) {
GST_DEBUG_OBJECT (nvdec, "No available OpenGL display");
return FALSE;
}
if (!gst_gl_query_local_gl_context (GST_ELEMENT (nvdec), GST_PAD_SRC,
&nvdec->gl_context)) {
GST_INFO_OBJECT (nvdec, "failed to query local OpenGL context");
if (nvdec->gl_context)
gst_object_unref (nvdec->gl_context);
nvdec->gl_context =
gst_gl_display_get_gl_context_for_thread (nvdec->gl_display, NULL);
if (!nvdec->gl_context
|| !gst_gl_display_add_context (nvdec->gl_display, nvdec->gl_context)) {
if (nvdec->gl_context)
gst_object_unref (nvdec->gl_context);
if (!gst_gl_display_create_context (nvdec->gl_display,
nvdec->other_gl_context, &nvdec->gl_context, NULL)) {
GST_ERROR_OBJECT (nvdec, "failed to create OpenGL context");
return FALSE;
}
if (!gst_gl_display_add_context (nvdec->gl_display, nvdec->gl_context)) {
GST_ERROR_OBJECT (nvdec,
"failed to add the OpenGL context to the display");
return FALSE;
}
}
}
if (!gst_gl_context_check_gl_version (nvdec->gl_context,
SUPPORTED_GL_APIS, 3, 0)) {
GST_WARNING_OBJECT (nvdec, "OpenGL context could not support PBO download");
return FALSE;
}
gst_gl_context_thread_add (nvdec->gl_context,
(GstGLContextThreadFunc) gst_nvdec_check_cuda_device_from_context, &ret);
if (!ret) {
GST_WARNING_OBJECT (nvdec, "Current OpenGL context is not CUDA-compatible");
return FALSE;
}
return TRUE;
}
static gboolean
gst_nvdec_ensure_gl_pool (GstNvDec * nvdec, GstQuery * query)
{
GstCaps *outcaps;
GstBufferPool *pool = NULL;
guint n, size, min, max;
GstVideoInfo vinfo = { 0, };
GstStructure *config;
GST_DEBUG_OBJECT (nvdec, "decide allocation");
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) {
GST_DEBUG_OBJECT (nvdec, "no downstream pool, create our pool");
pool = gst_gl_buffer_pool_new (nvdec->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);
return TRUE;
}
#endif
static gboolean
gst_nvdec_ensure_cuda_pool (GstNvDec * nvdec, GstQuery * query)
{
GstCaps *outcaps;
GstBufferPool *pool = NULL;
guint n, size, min, max;
GstVideoInfo vinfo = { 0, };
GstStructure *config;
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) {
if (!GST_IS_CUDA_BUFFER_POOL (pool)) {
gst_clear_object (&pool);
} else {
GstCudaBufferPool *cpool = GST_CUDA_BUFFER_POOL (pool);
if (cpool->context != nvdec->cuda_ctx)
gst_clear_object (&pool);
}
}
}
if (!pool) {
GST_DEBUG_OBJECT (nvdec, "no downstream pool, create our pool");
pool = gst_cuda_buffer_pool_new (nvdec->cuda_ctx);
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);
/* Get updated size by cuda buffer pool */
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_get_params (config, NULL, &size, NULL, NULL);
gst_structure_free (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);
return TRUE;
}
static gboolean
gst_nvdec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
GST_DEBUG_OBJECT (nvdec, "decide allocation");
if (nvdec->mem_type == GST_NVDEC_MEM_TYPE_SYSTEM)
goto done;
#ifdef HAVE_NVCODEC_GST_GL
if (nvdec->mem_type == GST_NVDEC_MEM_TYPE_GL) {
if (!gst_nvdec_ensure_gl_pool (nvdec, query))
return FALSE;
} else
#endif
if (!gst_nvdec_ensure_cuda_pool (nvdec, query)) {
return FALSE;
}
done:
return GST_VIDEO_DECODER_CLASS (gst_nvdec_parent_class)->decide_allocation
(decoder, query);
}
static gboolean
gst_nvdec_src_query (GstVideoDecoder * decoder, GstQuery * query)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
if (gst_cuda_handle_context_query (GST_ELEMENT (decoder),
query, nvdec->cuda_ctx)) {
return TRUE;
}
#ifdef HAVE_NVCODEC_GST_GL
if (gst_gl_handle_context_query (GST_ELEMENT (decoder), query,
nvdec->gl_display, nvdec->gl_context, nvdec->other_gl_context)) {
if (nvdec->gl_display)
gst_gl_display_filter_gl_api (GST_GL_DISPLAY (nvdec->gl_display),
SUPPORTED_GL_APIS);
return TRUE;
}
#endif
break;
default:
break;
}
return GST_VIDEO_DECODER_CLASS (gst_nvdec_parent_class)->src_query (decoder,
query);
}
static void
gst_nvdec_set_context (GstElement * element, GstContext * context)
{
GstNvDec *nvdec = GST_NVDEC (element);
GstNvDecClass *klass = GST_NVDEC_GET_CLASS (nvdec);
GST_DEBUG_OBJECT (nvdec, "set context %s",
gst_context_get_context_type (context));
if (gst_cuda_handle_set_context (element,
context, klass->cuda_device_id, &nvdec->cuda_ctx)) {
goto done;
}
#ifdef HAVE_NVCODEC_GST_GL
gst_gl_handle_set_context (element, context, &nvdec->gl_display,
&nvdec->other_gl_context);
#endif
done:
GST_ELEMENT_CLASS (gst_nvdec_parent_class)->set_context (element, context);
}
typedef struct
{
GstCaps *sink_caps;
GstCaps *src_caps;
cudaVideoCodec codec_type;
gchar *codec;
guint cuda_device_id;
gboolean is_default;
} GstNvDecClassData;
static void
gst_nvdec_subclass_init (gpointer g_class, gpointer data)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstNvDecClass *nvdec_class = GST_NVDEC_CLASS (g_class);
GstNvDecClassData *cdata = data;
gchar *long_name;
if (cdata->is_default) {
long_name = g_strdup_printf ("NVDEC %s Video Decoder", cdata->codec);
} else {
long_name = g_strdup_printf ("NVDEC %s Video Decoder with device %d",
cdata->codec, cdata->cuda_device_id);
}
gst_element_class_set_metadata (element_class, long_name,
"Codec/Decoder/Video/Hardware", "NVDEC video decoder",
"Ericsson AB, http://www.ericsson.com, "
"Seungha Yang <seungha.yang@navercorp.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->codec_type = cdata->codec_type;
nvdec_class->cuda_device_id = cdata->cuda_device_id;
gst_caps_unref (cdata->sink_caps);
gst_caps_unref (cdata->src_caps);
g_free (cdata->codec);
g_free (cdata);
}
static void
gst_nvdec_subclass_register (GstPlugin * plugin, GType type,
cudaVideoCodec codec_type, const gchar * codec, guint device_id, guint rank,
GstCaps * sink_caps, GstCaps * src_caps)
{
GTypeQuery type_query;
GTypeInfo type_info = { 0, };
GType subtype;
gchar *type_name;
GstNvDecClassData *cdata;
gboolean is_default = TRUE;
cdata = g_new0 (GstNvDecClassData, 1);
cdata->sink_caps = gst_caps_ref (sink_caps);
cdata->src_caps = gst_caps_ref (src_caps);
cdata->codec_type = codec_type;
cdata->codec = g_strdup (codec);
cdata->cuda_device_id = device_id;
g_type_query (type, &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 = gst_nvdec_subclass_init;
type_info.class_data = cdata;
type_name = g_strdup_printf ("nv%sdec", codec);
if (g_type_from_name (type_name) != 0) {
g_free (type_name);
type_name = g_strdup_printf ("nv%sdevice%ddec", codec, device_id);
is_default = FALSE;
}
cdata->is_default = is_default;
subtype = g_type_register_static (type, type_name, &type_info, 0);
/* make lower rank than default device */
if (rank > 0 && !is_default)
rank--;
if (!gst_element_register (plugin, type_name, rank, subtype))
GST_WARNING ("Failed to register plugin '%s'", type_name);
g_free (type_name);
}
void
gst_nvdec_plugin_init (GstPlugin * plugin, guint device_index,
cudaVideoCodec codec, const gchar * codec_name, GstCaps * sink_template,
GstCaps * src_template)
{
gst_nvdec_subclass_register (plugin, GST_TYPE_NVDEC, codec,
codec_name, device_index, GST_RANK_PRIMARY, sink_template, src_template);
}
Reference in a new issue View git blame Copy permalink