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gstreamer/sys/nvdec/gstnvdec.c
Matthew Waters 4e422bec4f nvdec: implement flush/drain 
Fixes outputted frame sequence when performing a seek

i.e. when seeking backwards, the first frame after the seek was a frame
from the future.  This would result in GstVideoDecoder essentially
marking all the timestamps as essentially bogus and the base class would
attempt to compensate.  A visible indication of this was 'decreasing timestamp'
warning after a seek.

https://bugzilla.gnome.org/show_bug.cgi?id=790478
2017-11-22 14:34:33 +11:00

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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 <gst/gl/gstglfuncs.h>
#include <cudaGL.h>
typedef enum
{
GST_NVDEC_QUEUE_ITEM_TYPE_SEQUENCE,
GST_NVDEC_QUEUE_ITEM_TYPE_DECODE,
GST_NVDEC_QUEUE_ITEM_TYPE_DISPLAY
} GstNvDecQueueItemType;
typedef struct _GstNvDecQueueItem
{
GstNvDecQueueItemType type;
gpointer data;
} GstNvDecQueueItem;
GST_DEBUG_CATEGORY_STATIC (gst_nvdec_debug_category);
#define GST_CAT_DEFAULT gst_nvdec_debug_category
static inline gboolean
cuda_OK (CUresult result)
{
const gchar *error_name, *error_text;
if (result != CUDA_SUCCESS) {
cuGetErrorName (result, &error_name);
cuGetErrorString (result, &error_text);
GST_WARNING ("CUDA call failed: %s, %s", error_name, error_text);
return FALSE;
}
return TRUE;
}
G_DEFINE_TYPE (GstNvDecCudaContext, gst_nvdec_cuda_context, G_TYPE_OBJECT);
static void
gst_nvdec_cuda_context_finalize (GObject * object)
{
GstNvDecCudaContext *self = (GstNvDecCudaContext *) object;
if (self->lock) {
GST_DEBUG ("destroying CUDA context lock");
if (cuda_OK (cuvidCtxLockDestroy (self->lock)))
self->lock = NULL;
else
GST_ERROR ("failed to destroy CUDA context lock");
}
if (self->context) {
GST_DEBUG ("destroying CUDA context");
if (cuda_OK (cuCtxDestroy (self->context)))
self->context = NULL;
else
GST_ERROR ("failed to destroy CUDA context");
}
G_OBJECT_CLASS (gst_nvdec_cuda_context_parent_class)->finalize (object);
}
static void
gst_nvdec_cuda_context_class_init (GstNvDecCudaContextClass * klass)
{
G_OBJECT_CLASS (klass)->finalize = gst_nvdec_cuda_context_finalize;
}
static void
gst_nvdec_cuda_context_init (GstNvDecCudaContext * self)
{
if (!cuda_OK (cuInit (0)))
GST_ERROR ("failed to init CUDA");
if (!cuda_OK (cuCtxCreate (&self->context, CU_CTX_SCHED_AUTO, 0)))
GST_ERROR ("failed to create CUDA context");
if (!cuda_OK (cuCtxPopCurrent (NULL)))
GST_ERROR ("failed to pop current CUDA context");
if (!cuda_OK (cuvidCtxLockCreate (&self->lock, self->context)))
GST_ERROR ("failed to create CUDA context lock");
}
typedef struct _GstNvDecCudaGraphicsResourceInfo
{
GstGLContext *gl_context;
GstNvDecCudaContext *cuda_context;
CUgraphicsResource resource;
} GstNvDecCudaGraphicsResourceInfo;
static void
register_cuda_resource (GstGLContext * context, gpointer * args)
{
GstMemory *mem = GST_MEMORY_CAST (args[0]);
GstNvDecCudaGraphicsResourceInfo *cgr_info =
(GstNvDecCudaGraphicsResourceInfo *) args[1];
GstMapInfo map_info = GST_MAP_INFO_INIT;
guint texture_id;
if (!cuda_OK (cuvidCtxLock (cgr_info->cuda_context->lock, 0)))
GST_WARNING ("failed to lock CUDA context");
if (gst_memory_map (mem, &map_info, GST_MAP_READ | GST_MAP_GL)) {
texture_id = *(guint *) map_info.data;
if (!cuda_OK (cuGraphicsGLRegisterImage (&cgr_info->resource, texture_id,
GL_TEXTURE_2D, CU_GRAPHICS_REGISTER_FLAGS_WRITE_DISCARD)))
GST_WARNING ("failed to register texture with CUDA");
gst_memory_unmap (mem, &map_info);
} else
GST_WARNING ("failed to map memory");
if (!cuda_OK (cuvidCtxUnlock (cgr_info->cuda_context->lock, 0)))
GST_WARNING ("failed to unlock CUDA context");
}
static void
unregister_cuda_resource (GstGLContext * context,
GstNvDecCudaGraphicsResourceInfo * cgr_info)
{
if (!cuda_OK (cuvidCtxLock (cgr_info->cuda_context->lock, 0)))
GST_WARNING ("failed to lock CUDA context");
if (!cuda_OK (cuGraphicsUnregisterResource ((const CUgraphicsResource)
cgr_info->resource)))
GST_WARNING ("failed to unregister resource");
if (!cuda_OK (cuvidCtxUnlock (cgr_info->cuda_context->lock, 0)))
GST_WARNING ("failed to unlock CUDA context");
}
static void
free_cgr_info (GstNvDecCudaGraphicsResourceInfo * cgr_info)
{
gst_gl_context_thread_add (cgr_info->gl_context,
(GstGLContextThreadFunc) unregister_cuda_resource, cgr_info);
gst_object_unref (cgr_info->gl_context);
g_object_unref (cgr_info->cuda_context);
g_slice_free (GstNvDecCudaGraphicsResourceInfo, cgr_info);
}
static CUgraphicsResource
ensure_cuda_graphics_resource (GstMemory * mem,
GstNvDecCudaContext * cuda_context)
{
static GQuark quark = 0;
GstNvDecCudaGraphicsResourceInfo *cgr_info;
gpointer args[2];
if (!gst_is_gl_base_memory (mem)) {
GST_WARNING ("memory is not GL base memory");
return NULL;
}
if (!quark)
quark = g_quark_from_static_string ("GstNvDecCudaGraphicsResourceInfo");
cgr_info = gst_mini_object_get_qdata (GST_MINI_OBJECT (mem), quark);
if (!cgr_info) {
cgr_info = g_slice_new (GstNvDecCudaGraphicsResourceInfo);
cgr_info->gl_context =
gst_object_ref (GST_GL_BASE_MEMORY_CAST (mem)->context);
cgr_info->cuda_context = g_object_ref (cuda_context);
args[0] = mem;
args[1] = cgr_info;
gst_gl_context_thread_add (cgr_info->gl_context,
(GstGLContextThreadFunc) register_cuda_resource, args);
gst_mini_object_set_qdata (GST_MINI_OBJECT (mem), quark, cgr_info,
(GDestroyNotify) free_cgr_info);
}
return cgr_info->resource;
}
static gboolean gst_nvdec_start (GstVideoDecoder * decoder);
static gboolean gst_nvdec_stop (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 GstStaticPadTemplate gst_nvdec_sink_template =
GST_STATIC_PAD_TEMPLATE (GST_VIDEO_DECODER_SINK_NAME,
GST_PAD_SINK, GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-h264, stream-format=byte-stream, alignment=au; "
"video/x-h265, stream-format=byte-stream, alignment=au; "
"video/mpeg, mpegversion={ 1, 2, 4 }, systemstream=false; "
"image/jpeg")
);
static GstStaticPadTemplate gst_nvdec_src_template =
GST_STATIC_PAD_TEMPLATE (GST_VIDEO_DECODER_SRC_NAME,
GST_PAD_SRC, GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_GL_MEMORY, "NV12") ", texture-target=2D")
);
G_DEFINE_TYPE_WITH_CODE (GstNvDec, gst_nvdec, GST_TYPE_VIDEO_DECODER,
GST_DEBUG_CATEGORY_INIT (gst_nvdec_debug_category, "nvdec", 0,
"Debug category for the nvdec element"));
static void
gst_nvdec_class_init (GstNvDecClass * klass)
{
GstVideoDecoderClass *video_decoder_class = GST_VIDEO_DECODER_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_static_pad_template (element_class,
&gst_nvdec_sink_template);
gst_element_class_add_static_pad_template (element_class,
&gst_nvdec_src_template);
gst_element_class_set_static_metadata (element_class, "NVDEC video decoder",
"Decoder/Video", "NVDEC video decoder",
"Ericsson AB, http://www.ericsson.com");
video_decoder_class->start = GST_DEBUG_FUNCPTR (gst_nvdec_start);
video_decoder_class->stop = GST_DEBUG_FUNCPTR (gst_nvdec_stop);
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);
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 gboolean
parser_sequence_callback (GstNvDec * nvdec, CUVIDEOFORMAT * format)
{
GstNvDecQueueItem *item;
guint width, height;
CUVIDDECODECREATEINFO create_info = { 0, };
gboolean ret = TRUE;
width = format->display_area.right - format->display_area.left;
height = format->display_area.bottom - format->display_area.top;
GST_DEBUG_OBJECT (nvdec, "width: %u, height: %u", width, height);
if (!nvdec->decoder || (nvdec->width != width || nvdec->height != height)) {
if (!cuda_OK (cuvidCtxLock (nvdec->cuda_context->lock, 0))) {
GST_ERROR_OBJECT (nvdec, "failed to lock CUDA context");
return FALSE;
}
if (nvdec->decoder) {
GST_DEBUG_OBJECT (nvdec, "destroying decoder");
if (!cuda_OK (cuvidDestroyDecoder (nvdec->decoder))) {
GST_ERROR_OBJECT (nvdec, "failed to destroy decoder");
ret = FALSE;
} else
nvdec->decoder = NULL;
}
GST_DEBUG_OBJECT (nvdec, "creating decoder");
create_info.ulWidth = width;
create_info.ulHeight = height;
create_info.ulNumDecodeSurfaces = 20;
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 = cudaVideoSurfaceFormat_NV12;
create_info.DeinterlaceMode = cudaVideoDeinterlaceMode_Weave;
create_info.ulTargetWidth = width;
create_info.ulTargetHeight = height;
create_info.ulNumOutputSurfaces = 1;
create_info.vidLock = nvdec->cuda_context->lock;
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
|| !cuda_OK (cuvidCreateDecoder (&nvdec->decoder, &create_info))) {
GST_ERROR_OBJECT (nvdec, "failed to create decoder");
ret = FALSE;
}
if (!cuda_OK (cuvidCtxUnlock (nvdec->cuda_context->lock, 0))) {
GST_ERROR_OBJECT (nvdec, "failed to unlock CUDA context");
ret = FALSE;
}
}
item = g_slice_new (GstNvDecQueueItem);
item->type = GST_NVDEC_QUEUE_ITEM_TYPE_SEQUENCE;
item->data = g_memdup (format, sizeof (CUVIDEOFORMAT));
g_async_queue_push (nvdec->decode_queue, item);
return ret;
}
static gboolean
parser_decode_callback (GstNvDec * nvdec, CUVIDPICPARAMS * params)
{
GstNvDecQueueItem *item;
GST_LOG_OBJECT (nvdec, "picture index: %u", params->CurrPicIdx);
if (!cuda_OK (cuvidCtxLock (nvdec->cuda_context->lock, 0)))
GST_WARNING_OBJECT (nvdec, "failed to lock CUDA context");
if (!cuda_OK (cuvidDecodePicture (nvdec->decoder, params)))
GST_WARNING_OBJECT (nvdec, "failed to decode picture");
if (!cuda_OK (cuvidCtxUnlock (nvdec->cuda_context->lock, 0)))
GST_WARNING_OBJECT (nvdec, "failed to unlock CUDA context");
item = g_slice_new (GstNvDecQueueItem);
item->type = GST_NVDEC_QUEUE_ITEM_TYPE_DECODE;
item->data = g_memdup (params, sizeof (CUVIDPICPARAMS));
((CUVIDPICPARAMS *) item->data)->pBitstreamData = NULL;
((CUVIDPICPARAMS *) item->data)->pSliceDataOffsets = NULL;
g_async_queue_push (nvdec->decode_queue, item);
return TRUE;
}
static gboolean
parser_display_callback (GstNvDec * nvdec, CUVIDPARSERDISPINFO * dispinfo)
{
GstNvDecQueueItem *item;
GST_LOG_OBJECT (nvdec, "picture index: %u", dispinfo->picture_index);
item = g_slice_new (GstNvDecQueueItem);
item->type = GST_NVDEC_QUEUE_ITEM_TYPE_DISPLAY;
item->data = g_memdup (dispinfo, sizeof (CUVIDPARSERDISPINFO));
g_async_queue_push (nvdec->decode_queue, item);
return TRUE;
}
static gboolean
gst_nvdec_start (GstVideoDecoder * decoder)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
GST_DEBUG_OBJECT (nvdec, "creating CUDA context");
nvdec->cuda_context = g_object_new (gst_nvdec_cuda_context_get_type (), NULL);
nvdec->decode_queue = g_async_queue_new ();
if (!nvdec->cuda_context->context || !nvdec->cuda_context->lock) {
GST_ERROR_OBJECT (nvdec, "failed to create CUDA context or lock");
return FALSE;
}
return TRUE;
}
static gboolean
maybe_destroy_decoder_and_parser (GstNvDec * nvdec)
{
gboolean ret = TRUE;
if (!cuda_OK (cuvidCtxLock (nvdec->cuda_context->lock, 0))) {
GST_ERROR_OBJECT (nvdec, "failed to lock CUDA context");
return FALSE;
}
if (nvdec->decoder) {
GST_DEBUG_OBJECT (nvdec, "destroying decoder");
ret = cuda_OK (cuvidDestroyDecoder (nvdec->decoder));
if (ret)
nvdec->decoder = NULL;
else
GST_ERROR_OBJECT (nvdec, "failed to destroy decoder");
}
if (!cuda_OK (cuvidCtxUnlock (nvdec->cuda_context->lock, 0))) {
GST_ERROR_OBJECT (nvdec, "failed to unlock CUDA context");
return FALSE;
}
if (nvdec->parser) {
GST_DEBUG_OBJECT (nvdec, "destroying parser");
if (!cuda_OK (cuvidDestroyVideoParser (nvdec->parser))) {
GST_ERROR_OBJECT (nvdec, "failed to destroy parser");
return FALSE;
}
nvdec->parser = NULL;
}
return ret;
}
static gboolean
gst_nvdec_stop (GstVideoDecoder * decoder)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
GstNvDecQueueItem *item;
GST_DEBUG_OBJECT (nvdec, "stop");
if (!maybe_destroy_decoder_and_parser (nvdec))
return FALSE;
if (nvdec->cuda_context) {
g_object_unref (nvdec->cuda_context);
nvdec->cuda_context = NULL;
}
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;
}
if (nvdec->input_state) {
gst_video_codec_state_unref (nvdec->input_state);
nvdec->input_state = NULL;
}
if (nvdec->decode_queue) {
if (g_async_queue_length (nvdec->decode_queue) > 0) {
GST_INFO_OBJECT (nvdec, "decode queue not empty");
while ((item = g_async_queue_try_pop (nvdec->decode_queue))) {
g_free (item->data);
g_slice_free (GstNvDecQueueItem, item);
}
}
g_async_queue_unref (nvdec->decode_queue);
nvdec->decode_queue = NULL;
}
return TRUE;
}
static gboolean
gst_nvdec_set_format (GstVideoDecoder * decoder, GstVideoCodecState * state)
{
GstNvDec *nvdec = GST_NVDEC (decoder);
GstStructure *s;
const gchar *caps_name;
gint mpegversion = 0;
CUVIDPARSERPARAMS parser_params = { 0, };
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;
s = gst_caps_get_structure (state->caps, 0);
caps_name = gst_structure_get_name (s);
GST_DEBUG_OBJECT (nvdec, "codec is %s", caps_name);
if (!g_strcmp0 (caps_name, "video/mpeg")) {
if (gst_structure_get_int (s, "mpegversion", &mpegversion)) {
switch (mpegversion) {
case 1:
parser_params.CodecType = cudaVideoCodec_MPEG1;
break;
case 2:
parser_params.CodecType = cudaVideoCodec_MPEG2;
break;
case 4:
parser_params.CodecType = cudaVideoCodec_MPEG4;
break;
}
}
if (!mpegversion) {
GST_ERROR_OBJECT (nvdec, "could not get MPEG version");
return FALSE;
}
} else if (!g_strcmp0 (caps_name, "video/x-h264")) {
parser_params.CodecType = cudaVideoCodec_H264;
} else if (!g_strcmp0 (caps_name, "image/jpeg")) {
parser_params.CodecType = cudaVideoCodec_JPEG;
} else if (!g_strcmp0 (caps_name, "video/x-h265")) {
parser_params.CodecType = cudaVideoCodec_HEVC;
} else {
GST_ERROR_OBJECT (nvdec, "failed to determine codec type");
return FALSE;
}
parser_params.ulMaxNumDecodeSurfaces = 20;
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_DEBUG_OBJECT (nvdec, "creating parser");
if (!cuda_OK (cuvidCreateVideoParser (&nvdec->parser, &parser_params))) {
GST_ERROR_OBJECT (nvdec, "failed to create parser");
return FALSE;
}
return TRUE;
}
static void
copy_video_frame_to_gl_textures (GstGLContext * context, gpointer * args)
{
GstNvDec *nvdec = GST_NVDEC (args[0]);
CUVIDPARSERDISPINFO *dispinfo = (CUVIDPARSERDISPINFO *) args[1];
CUgraphicsResource *resources = (CUgraphicsResource *) args[2];
guint num_resources = GPOINTER_TO_UINT (args[3]);
CUVIDPROCPARAMS proc_params = { 0, };
CUdeviceptr dptr;
CUarray array;
guint pitch, i;
CUDA_MEMCPY2D mcpy2d = { 0, };
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;
if (!cuda_OK (cuvidCtxLock (nvdec->cuda_context->lock, 0))) {
GST_WARNING_OBJECT (nvdec, "failed to lock CUDA context");
return;
}
if (!cuda_OK (cuvidMapVideoFrame (nvdec->decoder, dispinfo->picture_index,
&dptr, &pitch, &proc_params))) {
GST_WARNING_OBJECT (nvdec, "failed to map CUDA video frame");
goto unlock_cuda_context;
}
if (!cuda_OK (cuGraphicsMapResources (num_resources, resources, NULL))) {
GST_WARNING_OBJECT (nvdec, "failed to map CUDA resources");
goto unmap_video_frame;
}
mcpy2d.srcMemoryType = CU_MEMORYTYPE_DEVICE;
mcpy2d.srcPitch = pitch;
mcpy2d.dstMemoryType = CU_MEMORYTYPE_ARRAY;
mcpy2d.dstPitch = nvdec->width;
mcpy2d.WidthInBytes = nvdec->width;
for (i = 0; i < num_resources; i++) {
if (!cuda_OK (cuGraphicsSubResourceGetMappedArray (&array, resources[i], 0,
0))) {
GST_WARNING_OBJECT (nvdec, "failed to map CUDA array");
break;
}
mcpy2d.srcDevice = dptr + (i * pitch * nvdec->height);
mcpy2d.dstArray = array;
mcpy2d.Height = nvdec->height / (i + 1);
if (!cuda_OK (cuMemcpy2D (&mcpy2d)))
GST_WARNING_OBJECT (nvdec, "memcpy to mapped array failed");
}
if (!cuda_OK (cuGraphicsUnmapResources (num_resources, resources, NULL)))
GST_WARNING_OBJECT (nvdec, "failed to unmap CUDA resources");
unmap_video_frame:
if (!cuda_OK (cuvidUnmapVideoFrame (nvdec->decoder, dptr)))
GST_WARNING_OBJECT (nvdec, "failed to unmap CUDA video frame");
unlock_cuda_context:
if (!cuda_OK (cuvidCtxUnlock (nvdec->cuda_context->lock, 0)))
GST_WARNING_OBJECT (nvdec, "failed to unlock CUDA context");
}
static GstFlowReturn
handle_pending_frames (GstNvDec * nvdec)
{
GstVideoDecoder *decoder = GST_VIDEO_DECODER (nvdec);
GList *pending_frames, *list, *tmp;
GstVideoCodecFrame *pending_frame;
guint frame_number;
GstClockTime latency = 0;
GstNvDecQueueItem *item;
CUVIDEOFORMAT *format;
GstVideoCodecState *state;
guint width, height, fps_n, fps_d, i, num_resources;
CUVIDPICPARAMS *decode_params;
CUVIDPARSERDISPINFO *dispinfo;
CUgraphicsResource *resources;
gpointer args[4];
GstMemory *mem;
GstFlowReturn ret = GST_FLOW_OK;
/* find the oldest unused, unfinished frame */
pending_frames = list = gst_video_decoder_get_frames (decoder);
for (; pending_frames; pending_frames = pending_frames->next) {
pending_frame = pending_frames->data;
frame_number =
GPOINTER_TO_UINT (gst_video_codec_frame_get_user_data (pending_frame));
if (!frame_number)
break;
latency += pending_frame->duration;
}
while (ret == GST_FLOW_OK && pending_frames
&& (item =
(GstNvDecQueueItem *) g_async_queue_try_pop (nvdec->decode_queue))) {
switch (item->type) {
case GST_NVDEC_QUEUE_ITEM_TYPE_SEQUENCE:
if (!nvdec->decoder) {
GST_ERROR_OBJECT (nvdec, "no decoder");
ret = GST_FLOW_ERROR;
break;
}
format = (CUVIDEOFORMAT *) item->data;
width = format->display_area.right - format->display_area.left;
height = format->display_area.bottom - format->display_area.top;
fps_n = format->frame_rate.numerator;
fps_d = MAX (1, format->frame_rate.denominator);
if (!gst_pad_has_current_caps (GST_VIDEO_DECODER_SRC_PAD (decoder))
|| width != nvdec->width || height != nvdec->height
|| fps_n != nvdec->fps_n || fps_d != nvdec->fps_d) {
nvdec->width = width;
nvdec->height = height;
nvdec->fps_n = fps_n;
nvdec->fps_d = fps_d;
state = gst_video_decoder_set_output_state (decoder,
GST_VIDEO_FORMAT_NV12, nvdec->width, nvdec->height,
nvdec->input_state);
state->caps = gst_caps_new_simple ("video/x-raw",
"format", G_TYPE_STRING, "NV12",
"width", G_TYPE_INT, nvdec->width,
"height", G_TYPE_INT, nvdec->height,
"framerate", GST_TYPE_FRACTION, nvdec->fps_n, nvdec->fps_d,
"interlace-mode", G_TYPE_STRING, format->progressive_sequence
? "progressive" : "interleaved",
"texture-target", G_TYPE_STRING, "2D", NULL);
gst_caps_set_features (state->caps, 0,
gst_caps_features_new (GST_CAPS_FEATURE_MEMORY_GL_MEMORY, NULL));
gst_video_codec_state_unref (state);
if (!gst_video_decoder_negotiate (decoder)) {
GST_WARNING_OBJECT (nvdec, "failed to negotiate with downstream");
ret = GST_FLOW_NOT_NEGOTIATED;
break;
}
}
break;
case GST_NVDEC_QUEUE_ITEM_TYPE_DECODE:
decode_params = (CUVIDPICPARAMS *) item->data;
pending_frame = pending_frames->data;
frame_number = decode_params->CurrPicIdx + 1;
gst_video_codec_frame_set_user_data (pending_frame,
GUINT_TO_POINTER (frame_number), NULL);
if (decode_params->intra_pic_flag)
GST_VIDEO_CODEC_FRAME_SET_SYNC_POINT (pending_frame);
if (!GST_CLOCK_TIME_IS_VALID (pending_frame->duration)) {
pending_frame->duration =
nvdec->fps_n ? GST_SECOND * nvdec->fps_d / nvdec->fps_n : 0;
}
latency += pending_frame->duration;
pending_frames = pending_frames->next;
break;
case GST_NVDEC_QUEUE_ITEM_TYPE_DISPLAY:
dispinfo = (CUVIDPARSERDISPINFO *) item->data;
for (pending_frame = NULL, tmp = list; !pending_frame && tmp;
tmp = tmp->next) {
frame_number =
GPOINTER_TO_UINT (gst_video_codec_frame_get_user_data
(tmp->data));
if (frame_number == dispinfo->picture_index + 1)
pending_frame = tmp->data;
}
if (!pending_frame) {
GST_INFO_OBJECT (nvdec, "no frame with number %u",
dispinfo->picture_index + 1);
break;
}
if (dispinfo->timestamp != pending_frame->pts) {
GST_INFO_OBJECT (nvdec,
"timestamp mismatch, diff: %" GST_STIME_FORMAT,
GST_STIME_ARGS (GST_CLOCK_DIFF (dispinfo->timestamp,
pending_frame->pts)));
pending_frame->pts = dispinfo->timestamp;
}
if (latency > nvdec->min_latency) {
nvdec->min_latency = latency;
gst_video_decoder_set_latency (decoder, nvdec->min_latency,
nvdec->min_latency);
GST_DEBUG_OBJECT (nvdec, "latency: %" GST_TIME_FORMAT,
GST_TIME_ARGS (latency));
}
latency -= pending_frame->duration;
ret = gst_video_decoder_allocate_output_frame (decoder, pending_frame);
if (ret != GST_FLOW_OK) {
GST_WARNING_OBJECT (nvdec, "failed to allocate output frame");
break;
}
num_resources = gst_buffer_n_memory (pending_frame->output_buffer);
resources = g_new (CUgraphicsResource, num_resources);
for (i = 0; i < num_resources; i++) {
mem = gst_buffer_get_memory (pending_frame->output_buffer, i);
resources[i] =
ensure_cuda_graphics_resource (mem, nvdec->cuda_context);
GST_MINI_OBJECT_FLAG_SET (mem,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD);
gst_memory_unref (mem);
}
args[0] = nvdec;
args[1] = dispinfo;
args[2] = resources;
args[3] = GUINT_TO_POINTER (num_resources);
gst_gl_context_thread_add (nvdec->gl_context,
(GstGLContextThreadFunc) copy_video_frame_to_gl_textures, args);
g_free (resources);
if (!dispinfo->progressive_frame) {
GST_BUFFER_FLAG_SET (pending_frame->output_buffer,
GST_VIDEO_BUFFER_FLAG_INTERLACED);
if (dispinfo->top_field_first) {
GST_BUFFER_FLAG_SET (pending_frame->output_buffer,
GST_VIDEO_BUFFER_FLAG_TFF);
}
if (dispinfo->repeat_first_field == -1) {
GST_BUFFER_FLAG_SET (pending_frame->output_buffer,
GST_VIDEO_BUFFER_FLAG_ONEFIELD);
} else {
GST_BUFFER_FLAG_SET (pending_frame->output_buffer,
GST_VIDEO_BUFFER_FLAG_RFF);
}
}
list = g_list_remove (list, pending_frame);
ret = gst_video_decoder_finish_frame (decoder, pending_frame);
if (ret != GST_FLOW_OK)
GST_INFO_OBJECT (nvdec, "failed to finish frame");
break;
default:
g_assert_not_reached ();
}
g_free (item->data);
g_slice_free (GstNvDecQueueItem, item);
}
g_list_free_full (list, (GDestroyNotify) gst_video_codec_frame_unref);
return ret;
}
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, };
GST_LOG_OBJECT (nvdec, "handle frame");
gst_video_codec_frame_set_user_data (frame, GUINT_TO_POINTER (0), NULL);
if (!gst_buffer_map (frame->input_buffer, &map_info, GST_MAP_READ)) {
GST_ERROR_OBJECT (nvdec, "failed to map input 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 (GST_BUFFER_IS_DISCONT (frame->input_buffer))
packet.flags |= CUVID_PKT_DISCONTINUITY;
if (!cuda_OK (cuvidParseVideoData (nvdec->parser, &packet)))
GST_WARNING_OBJECT (nvdec, "parser failed");
gst_buffer_unmap (frame->input_buffer, &map_info);
gst_video_codec_frame_unref (frame);
return handle_pending_frames (nvdec);
}
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;
if (!cuda_OK (cuvidParseVideoData (nvdec->parser, &packet)))
GST_WARNING_OBJECT (nvdec, "parser failed");
handle_pending_frames (nvdec);
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;
if (!cuda_OK (cuvidParseVideoData (nvdec->parser, &packet)))
GST_WARNING_OBJECT (nvdec, "parser failed");
return handle_pending_frames (nvdec);
}
static gboolean
gst_nvdec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
{
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 (!gst_gl_ensure_element_data (nvdec, &nvdec->gl_display,
&nvdec->other_gl_context)) {
GST_ERROR_OBJECT (nvdec, "failed to ensure OpenGL display");
return FALSE;
}
if (!gst_gl_query_local_gl_context (GST_ELEMENT (decoder), 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;
}
}
}
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 (!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);
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_gl_handle_context_query (GST_ELEMENT (decoder), query,
nvdec->gl_display, nvdec->gl_context, nvdec->other_gl_context))
return TRUE;
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);
GST_DEBUG_OBJECT (nvdec, "set context");
gst_gl_handle_set_context (element, context, &nvdec->gl_display,
&nvdec->other_gl_context);
GST_ELEMENT_CLASS (gst_nvdec_parent_class)->set_context (element, context);
}
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