gstreamer/subprojects/gst-plugins-bad/sys/qsv/gstqsvh264dec.cpp

574 lines
16 KiB
C++

/* GStreamer
* Copyright (C) 2022 Seungha Yang <seungha@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstqsvh264dec.h"
#include <gst/codecparsers/gsth264parser.h>
#include <string>
#include <string.h>
#ifdef G_OS_WIN32
#include <gst/d3d11/gstd3d11.h>
#else
#include <gst/va/gstva.h>
#endif
GST_DEBUG_CATEGORY_STATIC (gst_qsv_h264_dec_debug);
#define GST_CAT_DEFAULT gst_qsv_h264_dec_debug
typedef struct _GstQsvH264Dec
{
GstQsvDecoder parent;
GstH264NalParser *parser;
gboolean packetized;
gboolean nal_length_size;
GstBuffer *sps_nals[GST_H264_MAX_SPS_COUNT];
GstBuffer *pps_nals[GST_H264_MAX_PPS_COUNT];
} GstQsvH264Dec;
typedef struct _GstQsvH264DecClass
{
GstQsvDecoderClass parent_class;
} GstQsvH264DecClass;
static GTypeClass *parent_class = nullptr;
#define GST_QSV_H264_DEC(object) ((GstQsvH264Dec *) (object))
#define GST_QSV_H264_DEC_GET_CLASS(object) \
(G_TYPE_INSTANCE_GET_CLASS ((object),G_TYPE_FROM_INSTANCE (object),GstQsvH264DecClass))
static gboolean gst_qsv_h264_dec_start (GstVideoDecoder * decoder);
static gboolean gst_qsv_h264_dec_stop (GstVideoDecoder * decoder);
static gboolean gst_qsv_h264_dec_set_format (GstQsvDecoder * decoder,
GstVideoCodecState * state);
static GstBuffer *gst_qsv_h264_dec_process_input (GstQsvDecoder * decoder,
gboolean need_codec_data, GstBuffer * buffer);
static void
gst_qsv_h264_dec_class_init (GstQsvH264DecClass * klass, gpointer data)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstVideoDecoderClass *videodec_class = GST_VIDEO_DECODER_CLASS (klass);
GstQsvDecoderClass *qsvdec_class = GST_QSV_DECODER_CLASS (klass);
GstQsvDecoderClassData *cdata = (GstQsvDecoderClassData *) data;
parent_class = (GTypeClass *) g_type_class_peek_parent (klass);
gst_element_class_set_static_metadata (element_class,
"Intel Quick Sync Video H.264 Decoder",
"Codec/Decoder/Video/Hardware",
"Intel Quick Sync Video H.264 Decoder",
"Seungha Yang <seungha@centricular.com>");
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));
videodec_class->start = GST_DEBUG_FUNCPTR (gst_qsv_h264_dec_start);
videodec_class->stop = GST_DEBUG_FUNCPTR (gst_qsv_h264_dec_stop);
qsvdec_class->set_format = GST_DEBUG_FUNCPTR (gst_qsv_h264_dec_set_format);
qsvdec_class->process_input =
GST_DEBUG_FUNCPTR (gst_qsv_h264_dec_process_input);
qsvdec_class->codec_id = MFX_CODEC_AVC;
qsvdec_class->impl_index = cdata->impl_index;
qsvdec_class->adapter_luid = cdata->adapter_luid;
qsvdec_class->display_path = cdata->display_path;
gst_caps_unref (cdata->sink_caps);
gst_caps_unref (cdata->src_caps);
g_free (cdata);
}
static void
gst_qsv_h264_dec_init (GstQsvH264Dec * self)
{
}
static gboolean
gst_qsv_h264_dec_start (GstVideoDecoder * decoder)
{
GstQsvH264Dec *self = GST_QSV_H264_DEC (decoder);
self->parser = gst_h264_nal_parser_new ();
return TRUE;
}
static void
gst_qsv_h264_dec_clear_codec_data (GstQsvH264Dec * self)
{
guint i;
for (i = 0; i < G_N_ELEMENTS (self->sps_nals); i++)
gst_clear_buffer (&self->sps_nals[i]);
for (i = 0; i < G_N_ELEMENTS (self->pps_nals); i++)
gst_clear_buffer (&self->pps_nals[i]);
}
static gboolean
gst_qsv_h264_dec_stop (GstVideoDecoder * decoder)
{
GstQsvH264Dec *self = GST_QSV_H264_DEC (decoder);
gst_qsv_h264_dec_clear_codec_data (self);
return GST_VIDEO_DECODER_CLASS (parent_class)->stop (decoder);
}
static void
gst_qsv_h264_dec_store_nal (GstQsvH264Dec * self, guint id,
GstH264NalUnitType nal_type, GstH264NalUnit * nalu)
{
GstBuffer *buf, **store;
guint size = nalu->size, store_size;
static const guint8 start_code[] = { 0, 0, 1 };
if (nal_type == GST_H264_NAL_SPS || nal_type == GST_H264_NAL_SUBSET_SPS) {
store_size = GST_H264_MAX_SPS_COUNT;
store = self->sps_nals;
GST_DEBUG_OBJECT (self, "storing sps %u", id);
} else if (nal_type == GST_H264_NAL_PPS) {
store_size = GST_H264_MAX_PPS_COUNT;
store = self->pps_nals;
GST_DEBUG_OBJECT (self, "storing pps %u", id);
} else {
return;
}
if (id >= store_size) {
GST_DEBUG_OBJECT (self, "unable to store nal, id out-of-range %d", id);
return;
}
buf = gst_buffer_new_allocate (nullptr, size + sizeof (start_code), nullptr);
gst_buffer_fill (buf, 0, start_code, sizeof (start_code));
gst_buffer_fill (buf, sizeof (start_code), nalu->data + nalu->offset, size);
if (store[id])
gst_buffer_unref (store[id]);
store[id] = buf;
}
static gboolean
gst_qsv_h264_dec_parse_codec_data (GstQsvH264Dec * self, const guint8 * data,
gsize size)
{
GstH264NalParser *parser = self->parser;
guint num_sps, num_pps;
guint off;
guint i;
GstH264ParserResult pres;
GstH264NalUnit nalu;
#ifndef GST_DISABLE_GST_DEBUG
guint profile;
#endif
/* parse the avcC data */
if (size < 7) { /* when numSPS==0 and numPPS==0, length is 7 bytes */
return FALSE;
}
/* parse the version, this must be 1 */
if (data[0] != 1) {
return FALSE;
}
#ifndef GST_DISABLE_GST_DEBUG
/* AVCProfileIndication */
/* profile_compat */
/* AVCLevelIndication */
profile = (data[1] << 16) | (data[2] << 8) | data[3];
GST_DEBUG_OBJECT (self, "profile %06x", profile);
#endif
/* 6 bits reserved | 2 bits lengthSizeMinusOne */
/* this is the number of bytes in front of the NAL units to mark their
* length */
self->nal_length_size = (data[4] & 0x03) + 1;
GST_DEBUG_OBJECT (self, "nal length size %u", self->nal_length_size);
num_sps = data[5] & 0x1f;
off = 6;
for (i = 0; i < num_sps; i++) {
GstH264SPS sps;
pres = gst_h264_parser_identify_nalu_avc (parser,
data, off, size, 2, &nalu);
if (pres != GST_H264_PARSER_OK) {
GST_WARNING_OBJECT (self, "Failed to identify SPS nalu");
return FALSE;
}
if (nalu.type == GST_H264_NAL_SPS) {
pres = gst_h264_parser_parse_sps (parser, &nalu, &sps);
} else {
pres = gst_h264_parser_parse_subset_sps (parser, &nalu, &sps);
}
if (pres != GST_H264_PARSER_OK) {
GST_WARNING_OBJECT (self, "Failed to parse SPS");
return FALSE;
}
gst_qsv_h264_dec_store_nal (self,
sps.id, (GstH264NalUnitType) nalu.type, &nalu);
gst_h264_sps_clear (&sps);
off = nalu.offset + nalu.size;
}
if (off >= size) {
GST_WARNING_OBJECT (self, "Too small avcC");
return GST_FLOW_ERROR;
}
num_pps = data[off];
off++;
for (i = 0; i < num_pps; i++) {
GstH264PPS pps;
pres = gst_h264_parser_identify_nalu_avc (parser,
data, off, size, 2, &nalu);
if (pres != GST_H264_PARSER_OK) {
GST_WARNING_OBJECT (self, "Failed to identify PPS nalu");
return FALSE;
}
pres = gst_h264_parser_parse_pps (parser, &nalu, &pps);
if (pres != GST_H264_PARSER_OK) {
GST_WARNING_OBJECT (self, "Failed to parse PPS nalu");
return FALSE;
}
gst_qsv_h264_dec_store_nal (self,
pps.id, (GstH264NalUnitType) nalu.type, &nalu);
gst_h264_pps_clear (&pps);
off = nalu.offset + nalu.size;
}
return TRUE;
}
static gboolean
gst_qsv_h264_dec_set_format (GstQsvDecoder * decoder,
GstVideoCodecState * state)
{
GstQsvH264Dec *self = GST_QSV_H264_DEC (decoder);
GstStructure *s;
const gchar *str;
GstMapInfo map;
gst_qsv_h264_dec_clear_codec_data (self);
self->packetized = FALSE;
s = gst_caps_get_structure (state->caps, 0);
str = gst_structure_get_string (s, "stream-format");
if ((g_strcmp0 (str, "avc") == 0 || g_strcmp0 (str, "avc3")) &&
state->codec_data) {
self->packetized = TRUE;
/* Will be updated */
self->nal_length_size = 4;
}
if (!self->packetized)
return TRUE;
if (!gst_buffer_map (state->codec_data, &map, GST_MAP_READ)) {
GST_ERROR_OBJECT (self, "Failed to map codec data");
return FALSE;
}
gst_qsv_h264_dec_parse_codec_data (self, map.data, map.size);
gst_buffer_unmap (state->codec_data, &map);
return TRUE;
}
static GstBuffer *
gst_qsv_h264_dec_process_input (GstQsvDecoder * decoder,
gboolean need_codec_data, GstBuffer * buffer)
{
GstQsvH264Dec *self = GST_QSV_H264_DEC (decoder);
GstH264NalParser *parser = self->parser;
GstH264NalUnit nalu;
GstH264ParserResult pres;
GstMapInfo map;
gboolean have_sps = FALSE;
gboolean have_pps = FALSE;
guint i;
GstBuffer *new_buf;
static const guint8 start_code[] = { 0, 0, 1 };
if (!self->packetized)
return gst_buffer_ref (buffer);
if (!gst_buffer_map (buffer, &map, GST_MAP_READ)) {
GST_ERROR_OBJECT (self, "Failed to map input buffer");
return nullptr;
}
memset (&nalu, 0, sizeof (GstH264NalUnit));
new_buf = gst_buffer_new ();
do {
GstMemory *mem;
guint8 *data;
gsize size;
pres = gst_h264_parser_identify_nalu_avc (parser, map.data,
nalu.offset + nalu.size, map.size, self->nal_length_size, &nalu);
if (pres == GST_H264_PARSER_NO_NAL_END)
pres = GST_H264_PARSER_OK;
switch (nalu.type) {
case GST_H264_NAL_SPS:
case GST_H264_NAL_SUBSET_SPS:{
GstH264SPS sps;
if (nalu.type == GST_H264_NAL_SPS) {
pres = gst_h264_parser_parse_sps (parser, &nalu, &sps);
} else {
pres = gst_h264_parser_parse_subset_sps (parser, &nalu, &sps);
}
if (pres != GST_H264_PARSER_OK)
break;
have_sps = TRUE;
gst_qsv_h264_dec_store_nal (self,
sps.id, (GstH264NalUnitType) nalu.type, &nalu);
gst_h264_sps_clear (&sps);
break;
}
case GST_H264_NAL_PPS:{
GstH264PPS pps;
pres = gst_h264_parser_parse_pps (parser, &nalu, &pps);
if (pres != GST_H264_PARSER_OK)
break;
have_pps = TRUE;
gst_qsv_h264_dec_store_nal (self,
pps.id, (GstH264NalUnitType) nalu.type, &nalu);
gst_h264_pps_clear (&pps);
break;
}
default:
break;
}
size = sizeof (start_code) + nalu.size;
data = (guint8 *) g_malloc (size);
memcpy (data, start_code, sizeof (start_code));
memcpy (data + sizeof (start_code), nalu.data + nalu.offset, nalu.size);
mem = gst_memory_new_wrapped ((GstMemoryFlags) 0, data, size, 0, size,
nullptr, (GDestroyNotify) g_free);
gst_buffer_append_memory (new_buf, mem);
} while (pres == GST_H264_PARSER_OK);
gst_buffer_unmap (buffer, &map);
if (need_codec_data) {
GstBuffer *tmp = gst_buffer_new ();
if (!have_sps) {
for (i = 0; i < GST_H264_MAX_SPS_COUNT; i++) {
if (!self->sps_nals[i])
continue;
tmp = gst_buffer_append (tmp, gst_buffer_ref (self->sps_nals[i]));
}
}
if (!have_pps) {
for (i = 0; i < GST_H264_MAX_PPS_COUNT; i++) {
if (!self->pps_nals[i])
continue;
tmp = gst_buffer_append (tmp, gst_buffer_ref (self->pps_nals[i]));
}
}
new_buf = gst_buffer_append (tmp, new_buf);
}
return new_buf;
}
typedef struct
{
guint width;
guint height;
} Resolution;
void
gst_qsv_h264_dec_register (GstPlugin * plugin, guint rank, guint impl_index,
GstObject * device, mfxSession session)
{
mfxVideoParam param;
mfxInfoMFX *mfx;
static const Resolution resolutions_to_check[] = {
{1280, 720}, {1920, 1088}, {2560, 1440}, {3840, 2160}, {4096, 2160},
{7680, 4320}, {8192, 4320}
};
Resolution max_resolution;
GST_DEBUG_CATEGORY_INIT (gst_qsv_h264_dec_debug,
"qsvh264dec", 0, "qsvh264dec");
memset (&param, 0, sizeof (mfxVideoParam));
memset (&max_resolution, 0, sizeof (Resolution));
param.AsyncDepth = 4;
param.IOPattern = MFX_IOPATTERN_OUT_VIDEO_MEMORY;
mfx = &param.mfx;
mfx->CodecId = MFX_CODEC_AVC;
mfx->FrameInfo.FrameRateExtN = 30;
mfx->FrameInfo.FrameRateExtD = 1;
mfx->FrameInfo.AspectRatioW = 1;
mfx->FrameInfo.AspectRatioH = 1;
mfx->FrameInfo.ChromaFormat = MFX_CHROMAFORMAT_YUV420;
mfx->FrameInfo.FourCC = MFX_FOURCC_NV12;
mfx->FrameInfo.BitDepthLuma = 8;
mfx->FrameInfo.BitDepthChroma = 8;
mfx->FrameInfo.PicStruct = MFX_PICSTRUCT_PROGRESSIVE;
mfx->CodecProfile = MFX_PROFILE_AVC_MAIN;
/* Check max-resolution */
for (guint i = 0; i < G_N_ELEMENTS (resolutions_to_check); i++) {
mfx->FrameInfo.Width = GST_ROUND_UP_16 (resolutions_to_check[i].width);
mfx->FrameInfo.Height = GST_ROUND_UP_16 (resolutions_to_check[i].height);
mfx->FrameInfo.CropW = resolutions_to_check[i].width;
mfx->FrameInfo.CropH = resolutions_to_check[i].height;
if (MFXVideoDECODE_Query (session, &param, &param) != MFX_ERR_NONE)
break;
max_resolution.width = resolutions_to_check[i].width;
max_resolution.height = resolutions_to_check[i].height;
}
if (max_resolution.width == 0 || max_resolution.height == 0)
return;
GST_INFO ("Maximum supported resolution: %dx%d",
max_resolution.width, max_resolution.height);
/* To cover both landscape and portrait,
* select max value (width in this case) */
guint resolution = MAX (max_resolution.width, max_resolution.height);
std::string src_caps_str = "video/x-raw, format=(string) NV12";
src_caps_str += ", width=(int) [ 16, " + std::to_string (resolution) + " ]";
src_caps_str += ", height=(int) [ 16, " + std::to_string (resolution) + " ]";
GstCaps *src_caps = gst_caps_from_string (src_caps_str.c_str ());
/* TODO: Add support for VA */
#ifdef G_OS_WIN32
GstCaps *d3d11_caps = gst_caps_copy (src_caps);
GstCapsFeatures *caps_features =
gst_caps_features_new (GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY, nullptr);
gst_caps_set_features_simple (d3d11_caps, caps_features);
gst_caps_append (d3d11_caps, src_caps);
src_caps = d3d11_caps;
#endif
std::string sink_caps_str = "video/x-h264";
sink_caps_str += ", width=(int) [ 16, " + std::to_string (resolution) + " ]";
sink_caps_str += ", height=(int) [ 16, " + std::to_string (resolution) + " ]";
sink_caps_str += ", stream-format=(string) { byte-stream, avc, avc3 }";
sink_caps_str += ", alignment=(string) au";
sink_caps_str += ", profile=(string) { high, progressive-high, "
"constrained-high, main, constrained-baseline, baseline } ";
GstCaps *sink_caps = gst_caps_from_string (sink_caps_str.c_str ());
GST_MINI_OBJECT_FLAG_SET (sink_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
GST_MINI_OBJECT_FLAG_SET (src_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
GstQsvDecoderClassData *cdata = g_new0 (GstQsvDecoderClassData, 1);
cdata->sink_caps = sink_caps;
cdata->src_caps = src_caps;
cdata->impl_index = impl_index;
#ifdef G_OS_WIN32
gint64 device_luid;
g_object_get (device, "adapter-luid", &device_luid, nullptr);
cdata->adapter_luid = device_luid;
#else
gchar *display_path;
g_object_get (device, "path", &display_path, nullptr);
cdata->display_path = display_path;
#endif
GType type;
gchar *type_name;
gchar *feature_name;
GTypeInfo type_info = {
sizeof (GstQsvH264DecClass),
nullptr,
nullptr,
(GClassInitFunc) gst_qsv_h264_dec_class_init,
nullptr,
cdata,
sizeof (GstQsvH264Dec),
0,
(GInstanceInitFunc) gst_qsv_h264_dec_init,
};
type_name = g_strdup ("GstQsvH264Dec");
feature_name = g_strdup ("qsvh264dec");
gint index = 0;
while (g_type_from_name (type_name)) {
index++;
g_free (type_name);
g_free (feature_name);
type_name = g_strdup_printf ("GstQsvH264Device%dDec", index);
feature_name = g_strdup_printf ("qsvh264device%ddec", index);
}
type = g_type_register_static (GST_TYPE_QSV_DECODER, type_name, &type_info,
(GTypeFlags) 0);
if (rank > 0 && index != 0)
rank--;
if (!gst_element_register (plugin, feature_name, rank, type))
GST_WARNING ("Failed to register plugin '%s'", type_name);
g_free (type_name);
g_free (feature_name);
}