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gstreamer/sys/msdk/gstmsdkdec.c
Haihao Xiang bdf9a76226 Revert "msdkdec: make sure to use video memory on Linux" 
Commit a1584b6 caused big performance drop if the downstream element
is not a msdk element because it is very slow to read data from video
memory directly.

This reverts commit a1584b6f99.
2020-01-10 01:36:40 +00:00

1681 lines
52 KiB
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/* GStreamer Intel MSDK plugin
* Copyright (c) 2016, Intel Corporation
* 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.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 <stdlib.h>
#include "gstmsdkdec.h"
#include "gstmsdkbufferpool.h"
#include "gstmsdkvideomemory.h"
#include "gstmsdksystemmemory.h"
#include "gstmsdkcontextutil.h"
GST_DEBUG_CATEGORY_EXTERN (gst_msdkdec_debug);
#define GST_CAT_DEFAULT gst_msdkdec_debug
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_MSDK_CAPS_STR ("NV12", "NV12"))
);
#define PROP_HARDWARE_DEFAULT TRUE
#define PROP_ASYNC_DEPTH_DEFAULT 1
#define IS_ALIGNED(i, n) (((i) & ((n)-1)) == 0)
#define gst_msdkdec_parent_class parent_class
G_DEFINE_TYPE (GstMsdkDec, gst_msdkdec, GST_TYPE_VIDEO_DECODER);
typedef struct _MsdkSurface
{
mfxFrameSurface1 *surface;
GstBuffer *buf;
GstVideoFrame data;
GstVideoFrame copy;
} MsdkSurface;
static gboolean gst_msdkdec_drain (GstVideoDecoder * decoder);
static gboolean gst_msdkdec_flush (GstVideoDecoder * decoder);
static gboolean gst_msdkdec_negotiate (GstMsdkDec * thiz, gboolean hard_reset);
static GstVideoCodecFrame *
gst_msdkdec_get_oldest_frame (GstVideoDecoder * decoder)
{
GstVideoCodecFrame *frame = NULL, *old_frame = NULL;
GList *frames, *l;
gint count = 0;
frames = gst_video_decoder_get_frames (decoder);
for (l = frames; l != NULL; l = l->next) {
GstVideoCodecFrame *f = l->data;
if (!GST_CLOCK_TIME_IS_VALID (f->pts)) {
GST_INFO
("Frame doesn't have a valid pts yet, Use gst_video_decoder_get_oldest_frame()"
"with out considering the PTS for selecting the frame to be finished");
old_frame = gst_video_decoder_get_oldest_frame (decoder);
break;
}
if (!frame || frame->pts > f->pts)
frame = f;
count++;
}
if (old_frame)
frame = old_frame;
if (frame) {
GST_LOG_OBJECT (decoder,
"Oldest frame is %d %" GST_TIME_FORMAT " and %d frames left",
frame->system_frame_number, GST_TIME_ARGS (frame->pts), count - 1);
gst_video_codec_frame_ref (frame);
}
if (old_frame)
gst_video_codec_frame_unref (old_frame);
g_list_free_full (frames, (GDestroyNotify) gst_video_codec_frame_unref);
return frame;
}
static void
free_surface (GstMsdkDec * thiz, MsdkSurface * s)
{
if (s->copy.buffer) {
gst_video_frame_unmap (&s->copy);
gst_buffer_unref (s->copy.buffer);
}
if (s->data.buffer)
gst_video_frame_unmap (&s->data);
gst_buffer_unref (s->buf);
thiz->decoded_msdk_surfaces = g_list_remove (thiz->decoded_msdk_surfaces, s);
g_slice_free (MsdkSurface, s);
}
static void
gst_msdkdec_free_unlocked_msdk_surfaces (GstMsdkDec * thiz,
MsdkSurface * curr_surface)
{
GList *l;
MsdkSurface *surface;
for (l = thiz->decoded_msdk_surfaces; l;) {
surface = l->data;
l = l->next;
if (surface != curr_surface && surface->surface->Data.Locked == 0)
free_surface (thiz, surface);
}
}
static GstFlowReturn
allocate_output_buffer (GstMsdkDec * thiz, GstBuffer ** buffer)
{
GstFlowReturn flow;
GstVideoCodecFrame *frame;
GstVideoDecoder *decoder = GST_VIDEO_DECODER (thiz);
frame = gst_msdkdec_get_oldest_frame (decoder);
if (!frame) {
if (GST_PAD_IS_FLUSHING (decoder->srcpad))
return GST_FLOW_FLUSHING;
else
return GST_FLOW_CUSTOM_SUCCESS;
}
if (!frame->output_buffer) {
/* Free un-unsed msdk surfaces firstly, hence the associated mfx
* surfaces will be moved from used list to available list */
if (thiz->postpone_free_surface || thiz->use_video_memory)
gst_msdkdec_free_unlocked_msdk_surfaces (thiz, NULL);
flow = gst_video_decoder_allocate_output_frame (decoder, frame);
if (flow != GST_FLOW_OK) {
gst_video_codec_frame_unref (frame);
return flow;
}
}
*buffer = gst_buffer_ref (frame->output_buffer);
gst_buffer_replace (&frame->output_buffer, NULL);
gst_video_codec_frame_unref (frame);
if (thiz->postpone_free_surface)
GST_MINI_OBJECT_FLAG_SET (*buffer, GST_MINI_OBJECT_FLAG_LOCKABLE);
return GST_FLOW_OK;
}
static MsdkSurface *
get_surface (GstMsdkDec * thiz, GstBuffer * buffer)
{
MsdkSurface *i;
GstVideoCodecState *output_state = NULL;
gboolean success;
i = g_slice_new0 (MsdkSurface);
if (gst_msdk_is_msdk_buffer (buffer)) {
i->surface = gst_msdk_get_surface_from_buffer (buffer);
i->buf = buffer;
} else {
/* Confirm to activate the side pool */
if (!gst_buffer_pool_is_active (thiz->pool) &&
!gst_buffer_pool_set_active (thiz->pool, TRUE)) {
g_slice_free (MsdkSurface, i);
return NULL;
}
if (!gst_video_frame_map (&i->copy, &thiz->non_msdk_pool_info, buffer,
GST_MAP_WRITE))
goto failed_unref_buffer;
if (gst_buffer_pool_acquire_buffer (thiz->pool, &buffer,
NULL) != GST_FLOW_OK)
goto failed_unmap_copy;
i->surface = gst_msdk_get_surface_from_buffer (buffer);
i->buf = buffer;
output_state =
gst_video_decoder_get_output_state (GST_VIDEO_DECODER (thiz));
success =
gst_video_frame_map (&i->data, &output_state->info, buffer,
GST_MAP_READWRITE);
gst_video_codec_state_unref (output_state);
if (!success)
goto failed_unref_buffer2;
}
gst_msdk_update_mfx_frame_info_from_mfx_video_param (&i->surface->Info,
&thiz->param);
thiz->decoded_msdk_surfaces = g_list_append (thiz->decoded_msdk_surfaces, i);
return i;
failed_unref_buffer2:
gst_buffer_unref (buffer);
buffer = i->data.buffer;
failed_unmap_copy:
gst_video_frame_unmap (&i->copy);
failed_unref_buffer:
gst_buffer_unref (buffer);
g_slice_free (MsdkSurface, i);
GST_ERROR_OBJECT (thiz, "failed to handle buffer");
return NULL;
}
static void
gst_msdkdec_close_decoder (GstMsdkDec * thiz, gboolean reset_param)
{
mfxStatus status;
if (!thiz->context || !thiz->initialized)
return;
GST_DEBUG_OBJECT (thiz, "Closing decoder with context %" GST_PTR_FORMAT,
thiz->context);
if (thiz->use_video_memory)
gst_msdk_frame_free (thiz->context, &thiz->alloc_resp);
status = MFXVideoDECODE_Close (gst_msdk_context_get_session (thiz->context));
if (status != MFX_ERR_NONE && status != MFX_ERR_NOT_INITIALIZED) {
GST_WARNING_OBJECT (thiz, "Decoder close failed (%s)",
msdk_status_to_string (status));
}
g_array_set_size (thiz->tasks, 0);
if (reset_param)
memset (&thiz->param, 0, sizeof (thiz->param));
thiz->initialized = FALSE;
gst_adapter_clear (thiz->adapter);
}
static void
gst_msdkdec_set_context (GstElement * element, GstContext * context)
{
GstMsdkContext *msdk_context = NULL;
GstMsdkDec *thiz = GST_MSDKDEC (element);
if (gst_msdk_context_get_context (context, &msdk_context)) {
gst_object_replace ((GstObject **) & thiz->context,
(GstObject *) msdk_context);
gst_object_unref (msdk_context);
}
GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
}
static gboolean
gst_msdkdec_init_decoder (GstMsdkDec * thiz)
{
GstMsdkDecClass *klass = GST_MSDKDEC_GET_CLASS (thiz);
GstVideoInfo *info;
mfxSession session;
mfxStatus status;
mfxFrameAllocRequest request;
if (thiz->initialized)
return TRUE;
if (!thiz->context) {
GST_WARNING_OBJECT (thiz, "No MSDK Context");
return FALSE;
}
if (!thiz->input_state) {
GST_DEBUG_OBJECT (thiz, "Have no input state yet");
return FALSE;
}
info = &thiz->input_state->info;
GST_OBJECT_LOCK (thiz);
if (thiz->use_video_memory) {
gst_msdk_set_frame_allocator (thiz->context);
thiz->param.IOPattern = MFX_IOPATTERN_OUT_VIDEO_MEMORY;
} else {
thiz->param.IOPattern = MFX_IOPATTERN_OUT_SYSTEM_MEMORY;
}
GST_INFO_OBJECT (thiz, "This MSDK decoder uses %s memory",
thiz->use_video_memory ? "video" : "system");
thiz->param.AsyncDepth = thiz->async_depth;
/* We expect msdk to fill the width and height values */
g_return_val_if_fail (thiz->param.mfx.FrameInfo.Width
&& thiz->param.mfx.FrameInfo.Height, FALSE);
klass->preinit_decoder (thiz);
/* Set frame rate only if provided.
* If not, frame rate will be assumed inside the driver.
* Also we respect the upstream provided fps values */
if (info->fps_n > 0 && info->fps_d > 0
&& info->fps_n != thiz->param.mfx.FrameInfo.FrameRateExtN
&& info->fps_d != thiz->param.mfx.FrameInfo.FrameRateExtD) {
thiz->param.mfx.FrameInfo.FrameRateExtN = info->fps_n;
thiz->param.mfx.FrameInfo.FrameRateExtD = info->fps_d;
}
if (info->par_n && info->par_d && !thiz->param.mfx.FrameInfo.AspectRatioW
&& !thiz->param.mfx.FrameInfo.AspectRatioH) {
thiz->param.mfx.FrameInfo.AspectRatioW = info->par_n;
thiz->param.mfx.FrameInfo.AspectRatioH = info->par_d;
}
thiz->param.mfx.FrameInfo.FourCC =
thiz->param.mfx.FrameInfo.FourCC ? thiz->param.mfx.
FrameInfo.FourCC : MFX_FOURCC_NV12;
thiz->param.mfx.FrameInfo.ChromaFormat =
thiz->param.mfx.FrameInfo.ChromaFormat ? thiz->param.mfx.
FrameInfo.ChromaFormat : MFX_CHROMAFORMAT_YUV420;
session = gst_msdk_context_get_session (thiz->context);
/* validate parameters and allow the Media SDK to make adjustments */
status = MFXVideoDECODE_Query (session, &thiz->param, &thiz->param);
if (status < MFX_ERR_NONE) {
GST_ERROR_OBJECT (thiz, "Video Decode Query failed (%s)",
msdk_status_to_string (status));
goto failed;
} else if (status > MFX_ERR_NONE) {
GST_WARNING_OBJECT (thiz, "Video Decode Query returned: %s",
msdk_status_to_string (status));
}
klass->postinit_decoder (thiz);
status = MFXVideoDECODE_QueryIOSurf (session, &thiz->param, &request);
if (status < MFX_ERR_NONE) {
GST_ERROR_OBJECT (thiz, "Query IO surfaces failed (%s)",
msdk_status_to_string (status));
goto failed;
} else if (status > MFX_ERR_NONE) {
GST_WARNING_OBJECT (thiz, "Query IO surfaces returned: %s",
msdk_status_to_string (status));
}
if (request.NumFrameSuggested < thiz->param.AsyncDepth) {
GST_ERROR_OBJECT (thiz, "Required %d surfaces (%d suggested), async %d",
request.NumFrameMin, request.NumFrameSuggested, thiz->param.AsyncDepth);
goto failed;
}
/* account for downstream requirement */
if (G_LIKELY (thiz->min_prealloc_buffers))
request.NumFrameSuggested += thiz->min_prealloc_buffers;
else
GST_WARNING_OBJECT (thiz,
"Allocating resources without considering the downstream requirement"
"or extra scratch surface count");
if (thiz->use_video_memory) {
gint shared_async_depth;
shared_async_depth =
gst_msdk_context_get_shared_async_depth (thiz->context);
request.NumFrameSuggested += shared_async_depth;
request.Type |= MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET;
if (thiz->use_dmabuf)
request.Type |= MFX_MEMTYPE_EXPORT_FRAME;
gst_msdk_frame_alloc (thiz->context, &request, &thiz->alloc_resp);
}
/* update the prealloc_buffer count, which will be used later
* as GstBufferPool min_buffers */
thiz->min_prealloc_buffers = request.NumFrameSuggested;
GST_DEBUG_OBJECT (thiz, "Required %d surfaces (%d suggested)",
request.NumFrameMin, request.NumFrameSuggested);
status = MFXVideoDECODE_Init (session, &thiz->param);
if (status < MFX_ERR_NONE) {
GST_ERROR_OBJECT (thiz, "Init failed (%s)", msdk_status_to_string (status));
goto failed;
} else if (status > MFX_ERR_NONE) {
GST_WARNING_OBJECT (thiz, "Init returned: %s",
msdk_status_to_string (status));
}
status = MFXVideoDECODE_GetVideoParam (session, &thiz->param);
if (status < MFX_ERR_NONE) {
GST_ERROR_OBJECT (thiz, "Get Video Parameters failed (%s)",
msdk_status_to_string (status));
goto failed;
} else if (status > MFX_ERR_NONE) {
GST_WARNING_OBJECT (thiz, "Get Video Parameters returned: %s",
msdk_status_to_string (status));
}
g_array_set_size (thiz->tasks, 0); /* resets array content */
g_array_set_size (thiz->tasks, thiz->param.AsyncDepth);
thiz->next_task = 0;
GST_OBJECT_UNLOCK (thiz);
thiz->initialized = TRUE;
return TRUE;
failed:
GST_OBJECT_UNLOCK (thiz);
return FALSE;
}
static gboolean
_gst_caps_has_feature (const GstCaps * caps, const gchar * feature)
{
guint i;
for (i = 0; i < gst_caps_get_size (caps); i++) {
GstCapsFeatures *const features = gst_caps_get_features (caps, i);
/* Skip ANY features, we need an exact match for correct evaluation */
if (gst_caps_features_is_any (features))
continue;
if (gst_caps_features_contains (features, feature))
return TRUE;
}
return FALSE;
}
static gboolean
srcpad_can_dmabuf (GstMsdkDec * thiz)
{
gboolean ret = FALSE;
GstCaps *caps, *out_caps;
GstPad *srcpad;
srcpad = GST_VIDEO_DECODER_SRC_PAD (thiz);
caps = gst_pad_get_pad_template_caps (srcpad);
out_caps = gst_pad_peer_query_caps (srcpad, caps);
if (!out_caps)
goto done;
if (gst_caps_is_any (out_caps) || gst_caps_is_empty (out_caps)
|| out_caps == caps)
goto done;
if (_gst_caps_has_feature (out_caps, GST_CAPS_FEATURE_MEMORY_DMABUF))
ret = TRUE;
done:
if (caps)
gst_caps_unref (caps);
if (out_caps)
gst_caps_unref (out_caps);
return ret;
}
static gboolean
gst_msdkdec_set_src_caps (GstMsdkDec * thiz, gboolean need_allocation)
{
GstVideoCodecState *output_state;
GstVideoInfo *vinfo;
GstVideoAlignment align;
GstCaps *allocation_caps = NULL;
GstVideoFormat format;
guint width, height;
guint alloc_w, alloc_h;
const gchar *format_str;
/* use display width and display height in output state, which
* will be used for caps negotiation */
width =
thiz->param.mfx.FrameInfo.CropW ? thiz->param.mfx.
FrameInfo.CropW : GST_VIDEO_INFO_WIDTH (&thiz->input_state->info);
height =
thiz->param.mfx.FrameInfo.CropH ? thiz->param.mfx.
FrameInfo.CropH : GST_VIDEO_INFO_HEIGHT (&thiz->input_state->info);
format =
gst_msdk_get_video_format_from_mfx_fourcc (thiz->param.mfx.
FrameInfo.FourCC);
if (format == GST_VIDEO_FORMAT_UNKNOWN) {
GST_WARNING_OBJECT (thiz, "Failed to find a valid video format");
return FALSE;
}
output_state =
gst_video_decoder_set_output_state (GST_VIDEO_DECODER (thiz),
format, width, height, thiz->input_state);
if (!output_state)
return FALSE;
/* Find allocation width and height */
alloc_w =
GST_ROUND_UP_16 (thiz->param.mfx.FrameInfo.Width ? thiz->param.mfx.
FrameInfo.Width : width);
alloc_h =
GST_ROUND_UP_32 (thiz->param.mfx.FrameInfo.Height ? thiz->param.mfx.
FrameInfo.Height : height);
/* Ensure output_state->caps and info have same width and height
* Also, mandate 32 bit alignment */
vinfo = &output_state->info;
gst_msdk_set_video_alignment (vinfo, alloc_w, alloc_h, &align);
gst_video_info_align (vinfo, &align);
output_state->caps = gst_video_info_to_caps (vinfo);
if (srcpad_can_dmabuf (thiz))
gst_caps_set_features (output_state->caps, 0,
gst_caps_features_new (GST_CAPS_FEATURE_MEMORY_DMABUF, NULL));
if (need_allocation) {
/* Find allocation width and height */
width =
GST_ROUND_UP_16 (thiz->param.mfx.FrameInfo.Width ? thiz->param.mfx.
FrameInfo.Width : GST_VIDEO_INFO_WIDTH (&output_state->info));
height =
GST_ROUND_UP_32 (thiz->param.mfx.FrameInfo.Height ? thiz->param.mfx.
FrameInfo.Height : GST_VIDEO_INFO_HEIGHT (&output_state->info));
/* set allocation width and height in allocation_caps,
* which may or may not be similar to the output_state caps */
allocation_caps = gst_caps_copy (output_state->caps);
format_str =
gst_video_format_to_string (GST_VIDEO_INFO_FORMAT
(&output_state->info));
gst_caps_set_simple (allocation_caps, "width", G_TYPE_INT, width, "height",
G_TYPE_INT, height, "format", G_TYPE_STRING, format_str, NULL);
GST_INFO_OBJECT (thiz, "new alloc caps = %" GST_PTR_FORMAT,
allocation_caps);
gst_caps_replace (&output_state->allocation_caps, allocation_caps);
gst_caps_unref (allocation_caps);
} else {
/* We keep the allocation parameters as it is to avoid pool re-negotiation.
* For codecs like VP9, dynamic resolution change doesn't require allocation
* reset if the new video frame resolution is lower than the
* already configured one */
}
gst_video_codec_state_unref (output_state);
return TRUE;
}
static void
gst_msdkdec_set_latency (GstMsdkDec * thiz)
{
GstVideoInfo *info = &thiz->input_state->info;
gint min_delayed_frames;
GstClockTime latency;
min_delayed_frames = thiz->async_depth;
if (info->fps_n) {
latency = gst_util_uint64_scale_ceil (GST_SECOND * info->fps_d,
min_delayed_frames, info->fps_n);
} else {
/* FIXME: Assume 25fps. This is better than reporting no latency at
* all and then later failing in live pipelines
*/
latency = gst_util_uint64_scale_ceil (GST_SECOND * 1,
min_delayed_frames, 25);
}
GST_INFO_OBJECT (thiz,
"Updating latency to %" GST_TIME_FORMAT " (%d frames)",
GST_TIME_ARGS (latency), min_delayed_frames);
gst_video_decoder_set_latency (GST_VIDEO_DECODER (thiz), latency, latency);
}
static gint
_find_msdk_surface (gconstpointer msdk_surface, gconstpointer comp_surface)
{
MsdkSurface *cached_surface = (MsdkSurface *) msdk_surface;
mfxFrameSurface1 *_surface = (mfxFrameSurface1 *) comp_surface;
return cached_surface ? cached_surface->surface != _surface : -1;
}
static GstFlowReturn
gst_msdkdec_finish_task (GstMsdkDec * thiz, MsdkDecTask * task)
{
GstVideoDecoder *decoder = GST_VIDEO_DECODER (thiz);
GstFlowReturn flow;
GstVideoCodecFrame *frame;
MsdkSurface *surface;
mfxStatus status;
GList *l;
if (G_LIKELY (task->sync_point)) {
status =
MFXVideoCORE_SyncOperation (gst_msdk_context_get_session
(thiz->context), task->sync_point, 300000);
if (status != MFX_ERR_NONE) {
GST_ERROR_OBJECT (thiz, "failed to do sync operation");
return GST_FLOW_ERROR;
}
}
if (G_LIKELY (task->sync_point || (task->surface && task->decode_only))) {
gboolean decode_only = task->decode_only;
frame = gst_msdkdec_get_oldest_frame (decoder);
l = g_list_find_custom (thiz->decoded_msdk_surfaces, task->surface,
_find_msdk_surface);
if (l) {
surface = l->data;
} else {
GST_ERROR_OBJECT (thiz, "Couldn't find the cached MSDK surface");
return GST_FLOW_ERROR;
}
if (G_LIKELY (frame)) {
if (G_LIKELY (surface->copy.buffer == NULL)) {
frame->output_buffer = gst_buffer_ref (surface->buf);
} else {
gst_video_frame_copy (&surface->copy, &surface->data);
frame->output_buffer = gst_buffer_ref (surface->copy.buffer);
}
}
if (!thiz->postpone_free_surface)
free_surface (thiz, surface);
task->sync_point = NULL;
task->surface = NULL;
task->decode_only = FALSE;
if (!frame)
return GST_FLOW_FLUSHING;
if (decode_only)
GST_VIDEO_CODEC_FRAME_SET_DECODE_ONLY (frame);
flow = gst_video_decoder_finish_frame (decoder, frame);
if (flow == GST_FLOW_ERROR)
GST_ERROR_OBJECT (thiz, "Failed to finish frame");
return flow;
}
return GST_FLOW_OK;
}
static gboolean
gst_msdkdec_start (GstVideoDecoder * decoder)
{
GstMsdkDec *thiz = GST_MSDKDEC (decoder);
if (gst_msdk_context_prepare (GST_ELEMENT_CAST (thiz), &thiz->context)) {
GST_INFO_OBJECT (thiz, "Found context %" GST_PTR_FORMAT " from neighbour",
thiz->context);
/* TODO: Currently d3d allocator is not implemented.
* So decoder uses system memory by default on Windows.
*/
#ifndef _WIN32
thiz->use_video_memory = TRUE;
#else
thiz->use_video_memory = FALSE;
#endif
if (gst_msdk_context_get_job_type (thiz->context) & GST_MSDK_JOB_DECODER) {
GstMsdkContext *parent_context, *msdk_context;
parent_context = thiz->context;
msdk_context = gst_msdk_context_new_with_parent (parent_context);
if (!msdk_context) {
GST_ERROR_OBJECT (thiz, "Context creation failed");
return FALSE;
}
thiz->context = msdk_context;
gst_msdk_context_add_shared_async_depth (thiz->context,
gst_msdk_context_get_shared_async_depth (parent_context));
gst_object_unref (parent_context);
GST_INFO_OBJECT (thiz,
"Creating new context %" GST_PTR_FORMAT " with joined session",
thiz->context);
} else {
gst_msdk_context_add_job_type (thiz->context, GST_MSDK_JOB_DECODER);
}
} else {
if (!gst_msdk_context_ensure_context (GST_ELEMENT_CAST (thiz),
thiz->hardware, GST_MSDK_JOB_DECODER))
return FALSE;
GST_INFO_OBJECT (thiz, "Creating new context %" GST_PTR_FORMAT,
thiz->context);
}
gst_msdk_context_add_shared_async_depth (thiz->context, thiz->async_depth);
return TRUE;
}
static gboolean
gst_msdkdec_close (GstVideoDecoder * decoder)
{
GstMsdkDec *thiz = GST_MSDKDEC (decoder);
if (thiz->context)
gst_object_replace ((GstObject **) & thiz->context, NULL);
return TRUE;
}
static gboolean
gst_msdkdec_stop (GstVideoDecoder * decoder)
{
GstMsdkDec *thiz = GST_MSDKDEC (decoder);
gst_msdkdec_flush (decoder);
if (thiz->input_state) {
gst_video_codec_state_unref (thiz->input_state);
thiz->input_state = NULL;
}
if (thiz->pool) {
gst_object_unref (thiz->pool);
thiz->pool = NULL;
}
gst_video_info_init (&thiz->non_msdk_pool_info);
gst_msdkdec_close_decoder (thiz, TRUE);
return TRUE;
}
static gboolean
gst_msdkdec_set_format (GstVideoDecoder * decoder, GstVideoCodecState * state)
{
GstMsdkDec *thiz = GST_MSDKDEC (decoder);
if (thiz->input_state) {
/* mark for re-negotiation if display resolution or any other video info
* changes like framerate. */
if (!gst_video_info_is_equal (&thiz->input_state->info, &state->info)) {
GST_INFO_OBJECT (thiz, "Schedule renegotiation as video info changed");
thiz->do_renego = TRUE;
}
gst_video_codec_state_unref (thiz->input_state);
}
thiz->input_state = gst_video_codec_state_ref (state);
/* we don't set output state here to avoid caching of mismatched
* video information if there is dynamic resolution change in the stream.
* All negotiation code is consolidated in gst_msdkdec_negotiate() and
* this will be invoked from handle_frame() */
gst_msdkdec_set_latency (thiz);
return TRUE;
}
static void
release_msdk_surfaces (GstMsdkDec * thiz)
{
GList *l;
MsdkSurface *surface;
for (l = thiz->decoded_msdk_surfaces; l;) {
surface = l->data;
l = l->next;
free_surface (thiz, surface);
}
}
/* This will get invoked in the following situations:
* 1: beginning of the stream, which requires initialization (== complete reset)
* 2: upstream notified a resolution change and set do_renego to TRUE.
* new resolution may or may not requires full reset
* 3: upstream failed to notify the resolution change but
* msdk detected the change (eg: vp9 stream in ivf elementary form
* with varying resolution frames).
*
* for any input configuration change, we deal with notification
* from upstream and also use msdk APIs to handle the parameter initialization
* efficiently
*/
static gboolean
gst_msdkdec_negotiate (GstMsdkDec * thiz, gboolean hard_reset)
{
GstVideoDecoder *decoder = GST_VIDEO_DECODER (thiz);
GST_DEBUG_OBJECT (thiz,
"Start Negotiating caps, pool and Init the msdk decdoer subsystem");
if (hard_reset) {
/* Retrieve any pending frames and push them downstream */
if (gst_msdkdec_drain (GST_VIDEO_DECODER (thiz)) != GST_FLOW_OK)
goto error_drain;
/* This will initiate the allocation query which will help to flush
* all the pending buffers in the pipeline so that we can stop
* the active bufferpool and safely invoke gst_msdk_frame_free() */
if (thiz->initialized) {
GstCaps *caps = gst_pad_get_current_caps (decoder->srcpad);
GstQuery *query = NULL;
if (caps) {
query = gst_query_new_allocation (caps, FALSE);
gst_pad_peer_query (decoder->srcpad, query);
gst_query_unref (query);
gst_caps_unref (caps);
}
}
/* De-initialize the decoder if it is already active */
/* Do not reset the mfxVideoParam since it already
* has the required parameters for new session decode */
gst_msdkdec_close_decoder (thiz, FALSE);
/* request for pool re-negotiation by setting do_realloc */
thiz->do_realloc = TRUE;
}
/* At this point all pending frames (if there are any) are pushed downstream
* and we are ready to negotiate the output caps */
if (!gst_msdkdec_set_src_caps (thiz, hard_reset))
return FALSE;
/* this will initiate the allocation query, we create the
* bufferpool in decide_allocation in order to account
* for the downstream min_buffer requirement
* Required initializations for MediaSDK operations
* will all be initialized from decide_allocation after considering
* some of the downstream requirements */
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (thiz)))
goto error_negotiate;
thiz->do_renego = FALSE;
thiz->do_realloc = FALSE;
return TRUE;
error_drain:
GST_ERROR_OBJECT (thiz, "Failed to Drain the queued decoded frames");
return FALSE;
error_negotiate:
GST_ERROR_OBJECT (thiz, "Failed to re-negotiate");
return FALSE;
}
static GstFlowReturn
gst_msdkdec_handle_frame (GstVideoDecoder * decoder, GstVideoCodecFrame * frame)
{
GstMsdkDec *thiz = GST_MSDKDEC (decoder);
GstMsdkDecClass *klass = GST_MSDKDEC_GET_CLASS (thiz);
GstFlowReturn flow;
GstBuffer *buffer, *input_buffer = NULL;
GstVideoInfo alloc_info;
MsdkDecTask *task = NULL;
mfxBitstream bitstream;
MsdkSurface *surface = NULL;
mfxSession session;
mfxStatus status;
GstMapInfo map_info;
guint i, retry_err_incompatible = 0;
gsize data_size;
gboolean hard_reset = FALSE;
/* configure the subclass in order to fill the CodecID field of
* mfxVideoParam and also to load the PluginID for some of the
* codecs which is mandatory to invoke the
* MFXVideoDECODE_DecodeHeader API.
*
* For non packetized formats (currently only vc1), there
* could be headers received as codec_data which are not available
* instream and in that case subclass implementation will
* push it to the internal adapter. We invoke the subclass configure
* well early to make sure the codec_data received has been correctly
* pushed to the adapter by the subclasses before doing
* the DecodeHeader() later on
*/
if (!thiz->initialized || thiz->do_renego) {
/* Clear the internal adapter in re-negotiation for non-packetized
* formats */
if (!gst_video_decoder_get_packetized (decoder))
gst_adapter_clear (thiz->adapter);
if (!klass->configure || !klass->configure (thiz)) {
flow = GST_FLOW_OK;
goto error;
}
}
/* Current frame-codec could be pushed and released before this
* function ends -- because msdkdec pushes the oldest frame,
* according its PTS, and it could be this very same frame-codec
* among others pending frame-codecs.
*
* Instead of copying the input data into the mfxBitstream, let's
* keep an extra reference to frame-codec's input buffer */
input_buffer = gst_buffer_ref (frame->input_buffer);
if (!gst_buffer_map (input_buffer, &map_info, GST_MAP_READ)) {
gst_buffer_unref (input_buffer);
return GST_FLOW_ERROR;
}
memset (&bitstream, 0, sizeof (bitstream));
if (gst_video_decoder_get_packetized (decoder)) {
/* Packetized stream: we prefer to have a parser as a connected upstream
* element to the decoder */
bitstream.Data = map_info.data;
bitstream.DataLength = map_info.size;
bitstream.MaxLength = map_info.size;
/*
* MFX_BITSTREAM_COMPLETE_FRAME was removed since commit df59db9, however
* some customers still use DecodedOrder (deprecated in msdk-2017 version)
* for low-latency streaming of non-b-frame encoded streams, which needs to
* output the frame at once, so add it back for this case
*/
if (thiz->param.mfx.DecodedOrder == GST_MSDKDEC_OUTPUT_ORDER_DECODE)
bitstream.DataFlag |= MFX_BITSTREAM_COMPLETE_FRAME;
} else {
/* Non packetized streams: eg: vc1 advanced profile with per buffer bdu */
gst_adapter_push (thiz->adapter, gst_buffer_ref (input_buffer));
data_size = gst_adapter_available (thiz->adapter);
bitstream.Data = (mfxU8 *) gst_adapter_map (thiz->adapter, data_size);
bitstream.DataLength = (mfxU32) data_size;
bitstream.MaxLength = bitstream.DataLength;
}
GST_INFO_OBJECT (thiz,
"mfxBitStream=> DataLength:%d DataOffset:%d MaxLength:%d",
bitstream.DataLength, bitstream.DataOffset, bitstream.MaxLength);
session = gst_msdk_context_get_session (thiz->context);
if (!thiz->initialized || thiz->do_renego) {
/* gstreamer caps will not provide all the necessary parameters
* required for optimal decode configuration. For example: the required number
* of surfaces to be allocated can be calculated based on H264 SEI header
* and this information can't be retrieved from the negotiated caps.
* So instead of introducing a codecparser dependency to parse the headers
* inside msdk plugin, we simply use the mfx APIs to extract header information */
status = MFXVideoDECODE_DecodeHeader (session, &bitstream, &thiz->param);
if (status == MFX_ERR_MORE_DATA) {
flow = GST_FLOW_OK;
goto done;
}
if (!klass->post_configure (thiz)) {
flow = GST_FLOW_ERROR;
goto error;
}
if (!thiz->initialized)
hard_reset = TRUE;
else {
GstVideoCodecState *output_state =
gst_video_decoder_get_output_state (GST_VIDEO_DECODER (thiz));
if (output_state) {
if (output_state->allocation_caps) {
gst_video_info_from_caps (&alloc_info, output_state->allocation_caps);
/* Check whether we need complete reset for dynamic resolution change */
if (thiz->param.mfx.FrameInfo.Width >
GST_VIDEO_INFO_WIDTH (&alloc_info)
|| thiz->param.mfx.FrameInfo.Height >
GST_VIDEO_INFO_HEIGHT (&alloc_info))
hard_reset = TRUE;
}
gst_video_codec_state_unref (output_state);
}
}
/* if subclass requested for the force reset */
if (thiz->force_reset_on_res_change)
hard_reset = TRUE;
if (!gst_msdkdec_negotiate (thiz, hard_reset)) {
GST_ELEMENT_ERROR (thiz, CORE, NEGOTIATION,
("Could not negotiate the stream"), (NULL));
flow = GST_FLOW_ERROR;
goto error;
}
}
/* gst_msdkdec_handle_frame owns one ref on input argument |frame|. At this
* point this frame is not used so just unref it right away.
* gst_msdkdec_finish_task is fetching the frames itself. */
gst_video_codec_frame_unref (frame);
frame = NULL;
for (;;) {
task = &g_array_index (thiz->tasks, MsdkDecTask, thiz->next_task);
flow = gst_msdkdec_finish_task (thiz, task);
if (flow != GST_FLOW_OK) {
if (flow == GST_FLOW_ERROR)
GST_ERROR_OBJECT (thiz, "Failed to finish a task");
goto error;
}
if (!surface) {
flow = allocate_output_buffer (thiz, &buffer);
if (flow == GST_FLOW_CUSTOM_SUCCESS) {
flow = GST_FLOW_OK;
break;
} else if (flow != GST_FLOW_OK)
goto error;
surface = get_surface (thiz, buffer);
if (!surface) {
/* Can't get a surface for some reason; finish tasks, then see if
a surface becomes available. */
for (i = 0; i < thiz->tasks->len - 1; i++) {
thiz->next_task = (thiz->next_task + 1) % thiz->tasks->len;
task = &g_array_index (thiz->tasks, MsdkDecTask, thiz->next_task);
flow = gst_msdkdec_finish_task (thiz, task);
if (flow != GST_FLOW_OK)
goto error;
surface = get_surface (thiz, buffer);
if (surface)
break;
}
if (!surface) {
GST_ERROR_OBJECT (thiz, "Couldn't get a surface");
flow = GST_FLOW_ERROR;
goto error;
}
}
}
status =
MFXVideoDECODE_DecodeFrameAsync (session, &bitstream, surface->surface,
&task->surface, &task->sync_point);
/* media-sdk requires complete reset since the surface is inadequate
* for further decoding */
if (status == MFX_ERR_INCOMPATIBLE_VIDEO_PARAM &&
retry_err_incompatible++ < 1) {
/* MFX_ERR_INCOMPATIBLE_VIDEO_PARAM means the current mfx surface is not
* suitable for the current frame. Call MFXVideoDECODE_DecodeHeader to get
* the current frame size, then do memory re-allocation, otherwise
* MFXVideoDECODE_DecodeFrameAsync will still fail on next call */
status = MFXVideoDECODE_DecodeHeader (session, &bitstream, &thiz->param);
if (status == MFX_ERR_MORE_DATA) {
flow = GST_FLOW_OK;
goto done;
}
/* Requires memory re-allocation, do a hard reset */
if (!gst_msdkdec_negotiate (thiz, TRUE))
goto error;
/* The current surface is freed when doing a hard reset; a new surface is
* required for the new resolution */
surface = NULL;
continue;
}
retry_err_incompatible = 0;
if (G_LIKELY (status == MFX_ERR_NONE)
|| (status == MFX_WRN_VIDEO_PARAM_CHANGED)) {
thiz->next_task = (thiz->next_task + 1) % thiz->tasks->len;
if (surface->surface->Data.Locked > 0)
surface = NULL;
else if (!thiz->use_video_memory) {
/* The for loop will continue because DataLength is greater than 0 so
* free the surface right away if not in use. */
if (bitstream.DataLength > 0 && task->surface != surface->surface)
free_surface (thiz, surface);
surface = NULL;
}
if (bitstream.DataLength == 0) {
flow = GST_FLOW_OK;
/* Don't release it if the current surface is in use */
if (surface && task->surface == surface->surface)
surface = NULL;
break;
}
} else if (status == MFX_ERR_MORE_DATA) {
if (task->surface) {
task->decode_only = TRUE;
thiz->next_task = (thiz->next_task + 1) % thiz->tasks->len;
}
if (surface->surface->Data.Locked > 0)
surface = NULL;
flow = GST_VIDEO_DECODER_FLOW_NEED_DATA;
break;
} else if (status == MFX_ERR_MORE_SURFACE) {
surface = NULL;
continue;
} else if (status == MFX_WRN_DEVICE_BUSY) {
/* If device is busy, wait 1ms and retry, as per MSDK's recommendation */
g_usleep (1000);
if (task->surface &&
task->surface == surface->surface && !task->sync_point) {
free_surface (thiz, surface);
surface = NULL;
}
/* If the current surface is still busy, we should do sync operation,
* then try to decode again
*/
thiz->next_task = (thiz->next_task + 1) % thiz->tasks->len;
} else if (status < MFX_ERR_NONE) {
GST_ERROR_OBJECT (thiz, "DecodeFrameAsync failed (%s)",
msdk_status_to_string (status));
flow = GST_FLOW_ERROR;
break;
}
}
if (!gst_video_decoder_get_packetized (decoder)) {
/* flush out the data which has already been consumed by msdk */
gst_adapter_flush (thiz->adapter, bitstream.DataOffset);
}
/*
* DecodedOrder was deprecated in msdk-2017 version, but some
* customers still using this for low-latency streaming of non-b-frame
* encoded streams, which needs to output the frame at once
*/
if (thiz->param.mfx.DecodedOrder == GST_MSDKDEC_OUTPUT_ORDER_DECODE)
gst_msdkdec_finish_task (thiz, task);
done:
if (surface)
free_surface (thiz, surface);
gst_buffer_unmap (input_buffer, &map_info);
gst_buffer_unref (input_buffer);
return flow;
error:
if (input_buffer) {
gst_buffer_unmap (input_buffer, &map_info);
gst_buffer_unref (input_buffer);
}
if (frame)
gst_video_decoder_drop_frame (decoder, frame);
return flow;
}
static GstFlowReturn
gst_msdkdec_parse (GstVideoDecoder * decoder, GstVideoCodecFrame * frame,
GstAdapter * adapter, gboolean at_eos)
{
gsize size;
GstFlowReturn ret;
GstBuffer *buffer;
GstMsdkDec *thiz = GST_MSDKDEC (decoder);
/* Don't parse the input buffer indeed, it will invoke
* gst_msdkdec_handle_frame to handle the input buffer */
size = gst_adapter_available (adapter);
gst_video_decoder_add_to_frame (decoder, size);
ret = gst_video_decoder_have_frame (decoder);
size = gst_adapter_available (thiz->adapter);
if (size) {
/* The base class will set up a new frame for parsing as
* soon as there is valid data in the buffer */
buffer = gst_adapter_get_buffer (thiz->adapter, size);
gst_adapter_flush (thiz->adapter, size);
gst_adapter_push (adapter, buffer);
}
return ret;
}
static GstBufferPool *
gst_msdkdec_create_buffer_pool (GstMsdkDec * thiz, GstVideoInfo * info,
guint num_buffers)
{
GstBufferPool *pool = NULL;
GstStructure *config;
GstAllocator *allocator = NULL;
GstVideoAlignment align;
GstCaps *caps = NULL;
GstAllocationParams params = { 0, 31, 0, 0, };
mfxFrameAllocResponse *alloc_resp = NULL;
g_return_val_if_fail (info, NULL);
g_return_val_if_fail (GST_VIDEO_INFO_WIDTH (info)
&& GST_VIDEO_INFO_HEIGHT (info), NULL);
alloc_resp = &thiz->alloc_resp;
pool = gst_msdk_buffer_pool_new (thiz->context, alloc_resp);
if (!pool)
goto error_no_pool;
caps = gst_video_info_to_caps (info);
/* allocators should use the same width/height/stride/height_alignment of
* negotiated output caps, which is what we configure in msdk_allocator */
if (thiz->use_dmabuf)
allocator = gst_msdk_dmabuf_allocator_new (thiz->context, info, alloc_resp);
else if (thiz->use_video_memory)
allocator = gst_msdk_video_allocator_new (thiz->context, info, alloc_resp);
else
allocator = gst_msdk_system_allocator_new (info);
if (!allocator) {
gst_caps_unref (caps);
goto error_no_allocator;
}
config = gst_buffer_pool_get_config (GST_BUFFER_POOL_CAST (pool));
gst_buffer_pool_config_set_params (config, caps,
GST_VIDEO_INFO_SIZE (info), num_buffers, 0);
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
gst_caps_unref (caps);
if (thiz->use_video_memory) {
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_MSDK_USE_VIDEO_MEMORY);
if (thiz->use_dmabuf)
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_MSDK_USE_DMABUF);
}
gst_buffer_pool_config_set_video_alignment (config, &align);
gst_buffer_pool_config_set_allocator (config, allocator, &params);
gst_object_unref (allocator);
if (!gst_buffer_pool_set_config (pool, config))
goto error_pool_config;
return pool;
error_no_pool:
{
GST_INFO_OBJECT (thiz, "failed to create bufferpool");
return NULL;
}
error_no_allocator:
{
GST_INFO_OBJECT (thiz, "failed to create allocator");
gst_object_unref (pool);
return NULL;
}
error_pool_config:
{
GST_INFO_OBJECT (thiz, "failed to set config");
gst_object_unref (pool);
gst_object_unref (allocator);
return NULL;
}
}
static gboolean
gst_msdkdec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
{
GstMsdkDec *thiz = GST_MSDKDEC (decoder);
GstBufferPool *pool = NULL;
GstStructure *pool_config = NULL;
GstCaps *pool_caps /*, *negotiated_caps */ ;
guint size, min_buffers, max_buffers;
if (!GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation (decoder,
query))
return FALSE;
/* Get the buffer pool config decided on by the base class. The base
class ensures that there will always be at least a 0th pool in
the query. */
gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL);
pool_config = gst_buffer_pool_get_config (pool);
/* Get the caps of pool and increase the min and max buffers by async_depth.
* We will always have that number of decode operations in-flight */
gst_buffer_pool_config_get_params (pool_config, &pool_caps, &size,
&min_buffers, &max_buffers);
min_buffers += thiz->async_depth;
if (max_buffers)
max_buffers += thiz->async_depth;
/* increase the min_buffers by 1 for smooth display in render pipeline */
min_buffers += 1;
/* this will get updated with msdk requirement */
thiz->min_prealloc_buffers = min_buffers;
if (_gst_caps_has_feature (pool_caps, GST_CAPS_FEATURE_MEMORY_DMABUF)) {
GST_INFO_OBJECT (decoder, "This MSDK decoder uses DMABuf memory");
thiz->use_video_memory = thiz->use_dmabuf = TRUE;
}
/* Initialize MSDK decoder before new bufferpool tries to alloc each buffer,
* which requires information about frame allocation.
* No effect if already initialized.
*/
if (!gst_msdkdec_init_decoder (thiz))
return FALSE;
/* get the updated min_buffers, which account for the msdk requirement as well */
min_buffers = thiz->min_prealloc_buffers;
/* Decoder always use its own pool. So we create a pool if msdk APIs
* previously requested for allocation (do_realloc = TRUE) */
if (thiz->do_realloc || !thiz->pool) {
GstVideoCodecState *output_state =
gst_video_decoder_get_output_state (GST_VIDEO_DECODER (thiz));
if (thiz->pool)
gst_object_replace ((GstObject **) & thiz->pool, NULL);
GST_INFO_OBJECT (decoder, "create new MSDK bufferpool");
thiz->pool =
gst_msdkdec_create_buffer_pool (thiz, &output_state->info, min_buffers);
gst_video_codec_state_unref (output_state);
if (!thiz->pool) {
GST_ERROR_OBJECT (decoder, "failed to create new pool");
goto failed_to_create_pool;
}
}
if (gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL)
&& gst_buffer_pool_has_option (pool,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT)) {
GstStructure *config;
GstAllocator *allocator;
/* If downstream supports video meta and video alignment,
* we can replace with our own msdk bufferpool and use it
*/
/* Remove downstream's pool */
gst_structure_free (pool_config);
gst_object_unref (pool);
pool = gst_object_ref (thiz->pool);
/* Set the allocator of new msdk bufferpool */
config = gst_buffer_pool_get_config (GST_BUFFER_POOL_CAST (pool));
if (gst_buffer_pool_config_get_allocator (config, &allocator, NULL))
gst_query_set_nth_allocation_param (query, 0, allocator, NULL);
gst_structure_free (config);
} else {
/* Unfortunately, downstream doesn't have videometa or alignment support,
* we keep msdk pool as a side-pool that will be decoded into and
* then copied from.
*/
GstVideoCodecState *output_state = NULL;
GST_INFO_OBJECT (decoder, "Keep MSDK bufferpool as a side-pool");
/* Update params to downstream's pool */
gst_buffer_pool_config_set_params (pool_config, pool_caps, size,
min_buffers, max_buffers);
if (!gst_buffer_pool_set_config (pool, pool_config))
goto error_set_config;
gst_video_info_from_caps (&thiz->non_msdk_pool_info, pool_caps);
/* update width and height with actual negotiated values */
output_state =
gst_video_decoder_get_output_state (GST_VIDEO_DECODER (thiz));
GST_VIDEO_INFO_WIDTH (&thiz->non_msdk_pool_info) =
GST_VIDEO_INFO_WIDTH (&output_state->info);
GST_VIDEO_INFO_HEIGHT (&thiz->non_msdk_pool_info) =
GST_VIDEO_INFO_HEIGHT (&output_state->info);
gst_video_codec_state_unref (output_state);
}
gst_query_set_nth_allocation_pool (query, 0, pool, size, min_buffers,
max_buffers);
if (pool)
gst_object_unref (pool);
return TRUE;
failed_to_create_pool:
GST_ERROR_OBJECT (decoder, "failed to set buffer pool config");
if (pool)
gst_object_unref (pool);
return FALSE;
error_set_config:
GST_ERROR_OBJECT (decoder, "failed to set buffer pool config");
if (pool)
gst_object_unref (pool);
return FALSE;
}
static GstFlowReturn
gst_msdkdec_drain (GstVideoDecoder * decoder)
{
GstMsdkDec *thiz = GST_MSDKDEC (decoder);
GstFlowReturn flow;
GstBuffer *buffer;
MsdkDecTask *task;
MsdkSurface *surface = NULL;
mfxSession session;
mfxStatus status;
guint i;
if (!thiz->initialized)
return GST_FLOW_OK;
session = gst_msdk_context_get_session (thiz->context);
for (;;) {
task = &g_array_index (thiz->tasks, MsdkDecTask, thiz->next_task);
if ((flow = gst_msdkdec_finish_task (thiz, task)) != GST_FLOW_OK) {
if (flow != GST_FLOW_FLUSHING)
GST_WARNING_OBJECT (decoder,
"failed to finish the task %p, but keep draining for the remaining frames",
task);
}
if (!surface) {
flow = allocate_output_buffer (thiz, &buffer);
if (flow != GST_FLOW_OK)
return flow;
surface = get_surface (thiz, buffer);
if (!surface)
return GST_FLOW_ERROR;
}
status =
MFXVideoDECODE_DecodeFrameAsync (session, NULL, surface->surface,
&task->surface, &task->sync_point);
if (G_LIKELY (status == MFX_ERR_NONE)) {
thiz->next_task = (thiz->next_task + 1) % thiz->tasks->len;
if (surface->surface->Data.Locked == 0)
free_surface (thiz, surface);
surface = NULL;
} else if (status == MFX_WRN_VIDEO_PARAM_CHANGED) {
continue;
} else if (status == MFX_WRN_DEVICE_BUSY) {
/* If device is busy, wait 1ms and retry, as per MSDK's recomendation */
g_usleep (1000);
/* If the current surface is still busy, we should do sync operation,
* then try to decode again
*/
thiz->next_task = (thiz->next_task + 1) % thiz->tasks->len;
} else if (status == MFX_ERR_MORE_DATA) {
break;
} else if (status == MFX_ERR_MORE_SURFACE) {
surface = NULL;
continue;
} else if (status < MFX_ERR_NONE)
return GST_FLOW_ERROR;
}
if (surface)
free_surface (thiz, surface);
for (i = 0; i < thiz->tasks->len; i++) {
task = &g_array_index (thiz->tasks, MsdkDecTask, thiz->next_task);
gst_msdkdec_finish_task (thiz, task);
thiz->next_task = (thiz->next_task + 1) % thiz->tasks->len;
}
release_msdk_surfaces (thiz);
return GST_FLOW_OK;
}
static gboolean
gst_msdkdec_flush (GstVideoDecoder * decoder)
{
GstMsdkDec *thiz = GST_MSDKDEC (decoder);
GstFlowReturn ret;
ret = gst_msdkdec_drain (GST_VIDEO_DECODER_CAST (thiz));
return ret == GST_FLOW_OK;
}
static GstFlowReturn
gst_msdkdec_finish (GstVideoDecoder * decoder)
{
return gst_msdkdec_drain (decoder);
}
static void
gst_msdkdec_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec)
{
GstMsdkDec *thiz = GST_MSDKDEC (object);
GstState state;
GST_OBJECT_LOCK (thiz);
state = GST_STATE (thiz);
if ((state != GST_STATE_READY && state != GST_STATE_NULL) &&
!(pspec->flags & GST_PARAM_MUTABLE_PLAYING))
goto wrong_state;
switch (prop_id) {
case GST_MSDKDEC_PROP_HARDWARE:
thiz->hardware = g_value_get_boolean (value);
break;
case GST_MSDKDEC_PROP_ASYNC_DEPTH:
thiz->async_depth = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (thiz);
return;
/* ERROR */
wrong_state:
{
GST_WARNING_OBJECT (thiz, "setting property in wrong state");
GST_OBJECT_UNLOCK (thiz);
}
}
static void
gst_msdkdec_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstMsdkDec *thiz = GST_MSDKDEC (object);
GST_OBJECT_LOCK (thiz);
switch (prop_id) {
case GST_MSDKDEC_PROP_HARDWARE:
g_value_set_boolean (value, thiz->hardware);
break;
case GST_MSDKDEC_PROP_ASYNC_DEPTH:
g_value_set_uint (value, thiz->async_depth);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (thiz);
}
static void
gst_msdkdec_finalize (GObject * object)
{
GstMsdkDec *thiz = GST_MSDKDEC (object);
g_array_unref (thiz->tasks);
g_object_unref (thiz->adapter);
/* NULL is the empty list. */
if (G_UNLIKELY (thiz->decoded_msdk_surfaces != NULL)) {
GST_ERROR_OBJECT (thiz, "leaking %u surfaces",
g_list_length (thiz->decoded_msdk_surfaces));
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_msdkdec_post_configure (GstMsdkDec * decoder)
{
/* Do nothing */
return TRUE;
}
static gboolean
gst_msdkdec_preinit_decoder (GstMsdkDec * decoder)
{
decoder->param.mfx.FrameInfo.Width =
GST_ROUND_UP_16 (decoder->param.mfx.FrameInfo.Width);
decoder->param.mfx.FrameInfo.Height =
GST_ROUND_UP_32 (decoder->param.mfx.FrameInfo.Height);
decoder->param.mfx.FrameInfo.PicStruct =
decoder->param.mfx.FrameInfo.PicStruct ? decoder->param.mfx.
FrameInfo.PicStruct : MFX_PICSTRUCT_PROGRESSIVE;
return TRUE;
}
static gboolean
gst_msdkdec_postinit_decoder (GstMsdkDec * decoder)
{
/* Do nothing */
return TRUE;
}
static void
gst_msdkdec_class_init (GstMsdkDecClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstVideoDecoderClass *decoder_class;
gobject_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
decoder_class = GST_VIDEO_DECODER_CLASS (klass);
gobject_class->set_property = gst_msdkdec_set_property;
gobject_class->get_property = gst_msdkdec_get_property;
gobject_class->finalize = gst_msdkdec_finalize;
element_class->set_context = gst_msdkdec_set_context;
decoder_class->close = GST_DEBUG_FUNCPTR (gst_msdkdec_close);
decoder_class->start = GST_DEBUG_FUNCPTR (gst_msdkdec_start);
decoder_class->stop = GST_DEBUG_FUNCPTR (gst_msdkdec_stop);
decoder_class->set_format = GST_DEBUG_FUNCPTR (gst_msdkdec_set_format);
decoder_class->finish = GST_DEBUG_FUNCPTR (gst_msdkdec_finish);
decoder_class->handle_frame = GST_DEBUG_FUNCPTR (gst_msdkdec_handle_frame);
decoder_class->parse = GST_DEBUG_FUNCPTR (gst_msdkdec_parse);
decoder_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_msdkdec_decide_allocation);
decoder_class->flush = GST_DEBUG_FUNCPTR (gst_msdkdec_flush);
decoder_class->drain = GST_DEBUG_FUNCPTR (gst_msdkdec_drain);
klass->post_configure = GST_DEBUG_FUNCPTR (gst_msdkdec_post_configure);
klass->preinit_decoder = GST_DEBUG_FUNCPTR (gst_msdkdec_preinit_decoder);
klass->postinit_decoder = GST_DEBUG_FUNCPTR (gst_msdkdec_postinit_decoder);
g_object_class_install_property (gobject_class, GST_MSDKDEC_PROP_HARDWARE,
g_param_spec_boolean ("hardware", "Hardware", "Enable hardware decoders",
PROP_HARDWARE_DEFAULT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, GST_MSDKDEC_PROP_ASYNC_DEPTH,
g_param_spec_uint ("async-depth", "Async Depth",
"Depth of asynchronous pipeline",
1, 20, PROP_ASYNC_DEPTH_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_add_static_pad_template (element_class, &src_factory);
}
static void
gst_msdkdec_init (GstMsdkDec * thiz)
{
gst_video_info_init (&thiz->non_msdk_pool_info);
thiz->tasks = g_array_new (FALSE, TRUE, sizeof (MsdkDecTask));
thiz->hardware = PROP_HARDWARE_DEFAULT;
thiz->async_depth = PROP_ASYNC_DEPTH_DEFAULT;
thiz->do_renego = TRUE;
thiz->do_realloc = TRUE;
thiz->force_reset_on_res_change = TRUE;
thiz->postpone_free_surface = FALSE;
thiz->adapter = gst_adapter_new ();
thiz->input_state = NULL;
thiz->pool = NULL;
thiz->context = NULL;
thiz->decoded_msdk_surfaces = NULL;
}
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