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gstreamer/sys/nvcodec/gstnvdec.c
Seungha Yang 9c21923f04 nvcodec: Add H264 stateless codec implementation 
Introduce GstH264Decoder based Nvidia H.264 decoder element.
Similar the element factory name of to v4l2 stateless codec,
this element can be configured with factory name "gstnvh264sldec".
Note that "sl" in the name stands for "stateless"

For now, existing nvh264dec covers more profile and formats
(e.g., interlaced stream) than this implementation.
However, this implementation allows us to control lower level
parameters such as decoded picture buffer management and therefore
we can get a chance to improve performance in terms of latency.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1198>
2020-04-24 09:23:10 +00:00

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/*
* 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 "gstnvdec.h"
#include "gstcudautils.h"
#include <string.h>
GST_DEBUG_CATEGORY_EXTERN (gst_nvdec_debug);
#define GST_CAT_DEFAULT gst_nvdec_debug
#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_system (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_nvdec_class_init (GstNvDecClass * klass)
{
GstVideoDecoderClass *video_decoder_class = GST_VIDEO_DECODER_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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);
}
static void
gst_nvdec_init (GstNvDec * nvdec)
{
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;
}
/* 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;
gint num_decode_surface = 0;
guint major_api_ver = 0;
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_color_transfer_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 */
num_decode_surface = format->min_num_decode_surfaces;
GST_DEBUG_OBJECT (nvdec, "Num decode surface: %d", num_decode_surface);
} else {
num_decode_surface =
calculate_num_decode_surface (format->codec, width, height);
GST_DEBUG_OBJECT (nvdec,
"Calculated num decode surface: %d", num_decode_surface);
}
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 = 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 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;
#ifdef HAVE_NVCODEC_GST_GL
{
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 if (nvdec->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 (nvdec, "found GL memory feature, use gl");
nvdec->mem_type = GST_NVDEC_MEM_TYPE_GL;
break;
}
}
}
gst_clear_caps (&caps);
}
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;
}
if (nvdec->mem_type == GST_NVDEC_MEM_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 (nvdec, "use system memory");
}
#endif
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_system (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);
nvdec->state = GST_NVDEC_STATE_INIT;
nvdec->last_ret = GST_FLOW_OK;
gst_video_info_init (&nvdec->out_info);
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 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
if (nvdec->gl_context) {
gst_object_unref (nvdec->gl_context);
nvdec->gl_context = NULL;
}
if (nvdec->other_gl_context) {
gst_object_unref (nvdec->other_gl_context);
nvdec->other_gl_context = NULL;
}
if (nvdec->gl_display) {
gst_object_unref (nvdec->gl_display);
nvdec->gl_display = NULL;
}
#endif
if (nvdec->input_state) {
gst_video_codec_state_unref (nvdec->input_state);
nvdec->input_state = NULL;
}
if (nvdec->output_state) {
gst_video_codec_state_unref (nvdec->output_state);
nvdec->output_state = NULL;
}
gst_clear_buffer (&nvdec->codec_data);
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, };
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;
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 = 0;
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 */
if (ret && nvdec->input_state->caps) {
const GValue *codec_data_value;
GstStructure *str;
str = gst_caps_get_structure (nvdec->input_state->caps, 0);
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 completre 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_system (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;
if (!gst_cuda_context_push (nvdec->cuda_ctx)) {
GST_WARNING_OBJECT (nvdec, "failed to lock CUDA context");
return FALSE;
}
if (!gst_video_frame_map (&video_frame, info, output_buffer, GST_MAP_WRITE)) {
GST_ERROR_OBJECT (nvdec, "frame map failure");
gst_cuda_context_pop (NULL);
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 = CU_MEMORYTYPE_HOST;
copy_params.WidthInBytes = GST_VIDEO_INFO_COMP_WIDTH (info, 0)
* GST_VIDEO_INFO_COMP_PSTRIDE (info, 0);
for (i = 0; i < GST_VIDEO_FRAME_N_PLANES (&video_frame); i++) {
copy_params.srcDevice = dptr + (i * pitch * GST_VIDEO_INFO_HEIGHT (info));
copy_params.dstHost = GST_VIDEO_FRAME_PLANE_DATA (&video_frame, i);
copy_params.dstPitch = GST_VIDEO_FRAME_PLANE_STRIDE (&video_frame, i);
copy_params.Height = GST_VIDEO_FRAME_COMP_HEIGHT (&video_frame, 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 GstFlowReturn
gst_nvdec_handle_frame (GstVideoDecoder * decoder, GstVideoCodecFrame * frame)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
GstNvDecClass *klass = GST_NVDEC_GET_CLASS (nvdec);
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_buffer_ref (frame->input_buffer);
if (GST_BUFFER_IS_DISCONT (frame->input_buffer)) {
if (nvdec->codec_data && klass->codec_type == cudaVideoCodec_MPEG4) {
in_buffer = gst_buffer_append (gst_buffer_ref (nvdec->codec_data),
in_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");
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");
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;
}
#endif
static gboolean
gst_nvdec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
{
#ifdef HAVE_NVCODEC_GST_GL
GstNvDec *nvdec = GST_NVDEC (decoder);
GstCaps *outcaps;
GstBufferPool *pool = NULL;
guint n, size, min, max;
GstVideoInfo vinfo = { 0, };
GstStructure *config;
GST_DEBUG_OBJECT (nvdec, "decide allocation");
if (nvdec->mem_type == GST_NVDEC_MEM_TYPE_SYSTEM)
return GST_VIDEO_DECODER_CLASS (gst_nvdec_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 (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);
#endif
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);
}
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