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gstreamer/subprojects/gst-plugins-bad/sys/va/gstvabasedec.c

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/* GStreamer
* Copyright (C) 2020 Igalia, S.L.
* Author: Víctor Jáquez <vjaquez@igalia.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 the0
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "gstvabasedec.h"
#include "gstvaallocator.h"
#include "gstvacaps.h"
#include "gstvapool.h"
#include "gstvautils.h"
#include "gstvavideoformat.h"
#define GST_CAT_DEFAULT (base->debug_category)
static gboolean
gst_va_base_dec_open (GstVideoDecoder * decoder)
{
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
GstVaBaseDecClass *klass = GST_VA_BASE_DEC_GET_CLASS (decoder);
gboolean ret = FALSE;
if (!gst_va_ensure_element_data (decoder, klass->render_device_path,
&base->display))
return FALSE;
if (!g_atomic_pointer_get (&base->decoder)) {
GstVaDecoder *va_decoder;
va_decoder = gst_va_decoder_new (base->display, klass->codec);
if (va_decoder)
ret = TRUE;
gst_object_replace ((GstObject **) (&base->decoder),
(GstObject *) va_decoder);
gst_clear_object (&va_decoder);
} else {
ret = TRUE;
}
base->apply_video_crop = FALSE;
return ret;
}
gboolean
gst_va_base_dec_close (GstVideoDecoder * decoder)
{
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
gst_clear_object (&base->decoder);
gst_clear_object (&base->display);
return TRUE;
}
static gboolean
gst_va_base_dec_stop (GstVideoDecoder * decoder)
{
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
if (!gst_va_decoder_close (base->decoder))
return FALSE;
if (base->output_state)
gst_video_codec_state_unref (base->output_state);
base->output_state = NULL;
if (base->other_pool)
gst_buffer_pool_set_active (base->other_pool, FALSE);
gst_clear_object (&base->other_pool);
g_clear_pointer (&base->convert, gst_video_converter_free);
return GST_VIDEO_DECODER_CLASS (GST_VA_BASE_DEC_GET_PARENT_CLASS
(decoder))->stop (decoder);
}
static GstCaps *
gst_va_base_dec_getcaps (GstVideoDecoder * decoder, GstCaps * filter)
{
GstCaps *caps = NULL, *tmp;
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
GstVaDecoder *va_decoder = NULL;
gst_object_replace ((GstObject **) & va_decoder, (GstObject *) base->decoder);
if (va_decoder) {
caps = gst_va_decoder_get_sinkpad_caps (va_decoder);
gst_object_unref (va_decoder);
}
if (caps) {
if (filter) {
tmp = gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (caps);
caps = tmp;
}
GST_LOG_OBJECT (base, "Returning caps %" GST_PTR_FORMAT, caps);
} else {
caps = gst_video_decoder_proxy_getcaps (decoder, NULL, filter);
}
return caps;
}
static gboolean
_query_context (GstVaBaseDec * self, GstQuery * query)
{
GstVaDisplay *display = NULL;
gboolean ret;
gst_object_replace ((GstObject **) & display, (GstObject *) self->display);
ret = gst_va_handle_context_query (GST_ELEMENT_CAST (self), query, display);
gst_clear_object (&display);
return ret;
}
static gboolean
gst_va_base_dec_src_query (GstVideoDecoder * decoder, GstQuery * query)
{
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
gboolean ret = FALSE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:{
ret = _query_context (base, query);
break;
}
case GST_QUERY_CAPS:{
GstCaps *caps = NULL, *tmp, *filter = NULL;
GstVaDecoder *va_decoder = NULL;
gboolean fixed_caps;
gst_object_replace ((GstObject **) & va_decoder,
(GstObject *) base->decoder);
gst_query_parse_caps (query, &filter);
fixed_caps = GST_PAD_IS_FIXED_CAPS (GST_VIDEO_DECODER_SRC_PAD (decoder));
if (!fixed_caps && va_decoder)
caps = gst_va_decoder_get_srcpad_caps (va_decoder);
gst_clear_object (&va_decoder);
if (caps) {
if (filter) {
tmp =
gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (caps);
caps = tmp;
}
GST_LOG_OBJECT (base, "Returning caps %" GST_PTR_FORMAT, caps);
gst_query_set_caps_result (query, caps);
gst_caps_unref (caps);
ret = TRUE;
break;
}
/* else jump to default */
}
default:
ret = GST_VIDEO_DECODER_CLASS (GST_VA_BASE_DEC_GET_PARENT_CLASS
(decoder))->src_query (decoder, query);
break;
}
return ret;
}
static gboolean
gst_va_base_dec_sink_query (GstVideoDecoder * decoder, GstQuery * query)
{
if (GST_QUERY_TYPE (query) == GST_QUERY_CONTEXT)
return _query_context (GST_VA_BASE_DEC (decoder), query);
return GST_VIDEO_DECODER_CLASS (GST_VA_BASE_DEC_GET_PARENT_CLASS
(decoder))->sink_query (decoder, query);
}
static GstAllocator *
_create_allocator (GstVaBaseDec * base, GstCaps * caps)
{
GstAllocator *allocator = NULL;
if (gst_caps_is_dmabuf (caps))
allocator = gst_va_dmabuf_allocator_new (base->display);
else {
GArray *surface_formats =
gst_va_decoder_get_surface_formats (base->decoder);
allocator = gst_va_allocator_new (base->display, surface_formats);
}
return allocator;
}
static void
_create_other_pool (GstVaBaseDec * base, GstAllocator * allocator,
GstAllocationParams * params, GstCaps * caps, guint size)
{
GstBufferPool *pool;
GstStructure *config;
gst_clear_object (&base->other_pool);
GST_DEBUG_OBJECT (base, "making new other pool for copy");
pool = gst_video_buffer_pool_new ();
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
gst_buffer_pool_config_set_allocator (config, allocator, params);
if (!gst_buffer_pool_set_config (pool, config)) {
GST_ERROR_OBJECT (base, "Couldn't configure other pool for copy.");
gst_clear_object (&pool);
}
base->other_pool = pool;
}
static gboolean
_need_video_crop (GstVaBaseDec * base)
{
if (base->need_valign &&
(base->valign.padding_left > 0 || base->valign.padding_top > 0))
return TRUE;
return FALSE;
}
/* This path for pool setting is a little complicated but not commonly
used. We deliberately separate it from the main path of pool setting. */
static gboolean
_decide_allocation_for_video_crop (GstVideoDecoder * decoder,
GstQuery * query, GstCaps * caps, const GstVideoInfo * info)
{
GstAllocator *allocator = NULL, *other_allocator = NULL;
GstAllocationParams other_params, params;
gboolean update_pool = FALSE, update_allocator = FALSE;
GstBufferPool *pool = NULL, *other_pool = NULL;
guint size = 0, min, max;
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
gboolean ret = TRUE;
GstCaps *va_caps = NULL;
/* If others provide a valid allocator, just use it. */
if (gst_query_get_n_allocation_params (query) > 0) {
gst_query_parse_nth_allocation_param (query, 0, &other_allocator,
&other_params);
update_allocator = TRUE;
} else {
gst_allocation_params_init (&other_params);
}
/* If others provide a valid pool, just use it. */
if (gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0, &other_pool, &size, &min,
&max);
min += base->min_buffers;
size = MAX (size, GST_VIDEO_INFO_SIZE (info));
update_pool = TRUE;
} else {
size = GST_VIDEO_INFO_SIZE (info);
min = base->min_buffers;
max = 0;
}
/* Ensure that the other pool is ready */
if (gst_caps_is_raw (caps)) {
if (GST_IS_VA_POOL (other_pool))
gst_clear_object (&other_pool);
if (!other_pool) {
if (other_allocator && (GST_IS_VA_DMABUF_ALLOCATOR (other_allocator)
|| GST_IS_VA_ALLOCATOR (other_allocator)))
gst_clear_object (&other_allocator);
_create_other_pool (base, other_allocator, &other_params, caps, size);
} else {
gst_object_replace ((GstObject **) & base->other_pool,
(GstObject *) other_pool);
}
} else {
GstStructure *other_config;
if (!GST_IS_VA_POOL (other_pool))
gst_clear_object (&other_pool);
if (!other_pool)
other_pool = gst_va_pool_new ();
if (other_allocator && !(GST_IS_VA_DMABUF_ALLOCATOR (other_allocator)
|| GST_IS_VA_ALLOCATOR (other_allocator)))
gst_clear_object (&other_allocator);
if (!other_allocator) {
other_allocator = _create_allocator (base, caps);
if (!other_allocator) {
ret = FALSE;
goto cleanup;
}
}
other_config = gst_buffer_pool_get_config (other_pool);
gst_buffer_pool_config_set_params (other_config, caps, size, min, max);
gst_buffer_pool_config_set_allocator (other_config, other_allocator,
&other_params);
/* Always support VideoMeta but no VideoCropMeta here. */
gst_buffer_pool_config_add_option (other_config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
gst_buffer_pool_config_set_va_allocation_params (other_config, 0);
if (!gst_buffer_pool_set_config (other_pool, other_config)) {
ret = FALSE;
goto cleanup;
}
gst_object_replace ((GstObject **) & base->other_pool,
(GstObject *) other_pool);
}
/* Now setup the buffer pool for decoder */
pool = gst_va_pool_new ();
va_caps = gst_caps_copy (caps);
gst_caps_set_features_simple (va_caps,
gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_VA));
if (!(allocator = _create_allocator (base, va_caps))) {
ret = FALSE;
goto cleanup;
}
gst_allocation_params_init (&params);
{
GstStructure *config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, min, max);
gst_buffer_pool_config_set_allocator (config, allocator, &params);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
if (_need_video_crop (base)) {
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
gst_buffer_pool_config_set_video_alignment (config, &base->valign);
}
gst_buffer_pool_config_set_va_allocation_params (config,
VA_SURFACE_ATTRIB_USAGE_HINT_DECODER);
if (!gst_buffer_pool_set_config (pool, config)) {
ret = FALSE;
goto cleanup;
}
}
if (update_allocator)
gst_query_set_nth_allocation_param (query, 0, allocator, &params);
else
gst_query_add_allocation_param (query, allocator, &params);
if (update_pool)
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
else
gst_query_add_allocation_pool (query, pool, size, min, max);
GST_WARNING_OBJECT (decoder, "We need to copy the output buffer manually "
"because of the top/left alignment, which may have low performance. "
"The element which supports VideoCropMeta such as 'vapostproc' can "
"avoid this.");
base->copy_frames = TRUE;
base->apply_video_crop = TRUE;
cleanup:
if (ret != TRUE)
gst_clear_object (&base->other_pool);
gst_clear_object (&allocator);
gst_clear_object (&other_allocator);
gst_clear_object (&pool);
gst_clear_object (&other_pool);
gst_clear_caps (&va_caps);
return ret;
}
/* We only support system pool and va pool. For va pool, its allocator
* should be va allocator or dma allocator.
* If output caps is memory:VAMemory, the pool should be a va pool
* with va allocator.
* If output caps is memory:DMABuf, the pool should be a va pool
* with dma allocator.
* We may need the other_pool to copy the decoder picture to the
* output buffer. We need to do this copy when:
* 1). The output caps is raw(system mem), but the downstream does
* not support VideoMeta and the strides and offsets of the va pool
* are different from the system memory pool, which means that the
* gst_video_frame_map() can not map the buffer correctly. Then we
* need a va pool with va allocator as an the internal pool and create
* a system pool as the other_pool to copy frames to system mem and
* output it.
* 2). The decoder has crop_top/left value > 0(e.g. the conformance
* window in the H265). Which means that the real output picture
* locates in the middle of the decoded buffer. If the downstream can
* support VideoCropMeta, a VideoCropMeta is added to notify the
* real picture's coordinate and size. But if not, we need to copy
* it manually and the other_pool is needed. We always assume that
* decoded picture starts from top-left corner, and so there is no
* need to do this if crop_bottom/right value > 0.
*
* 1. if crop_top/left value > 0 and the downstream does not support the
* VideoCropMeta, we always have the other_pool to do the copy(The pool
* may be provided by the downstream element, or created by ourself if
* no suitable one found).
* 2. get allocator in query
* 2.1 if allocator is not ours and caps is raw, keep it for other_pool.
* 3. get pool in query
* 3.1 if pool is not va, downstream doesn't support video meta and
* caps are raw, keep it as other_pool.
* 3.2 if there's no pool in query and and caps is raw, create other_pool
* as GstVideoPool with the non-va from query and query's params.
* 4. create our allocator and pool if they aren't in query
* 5. add or update pool and allocator in query
* 6. set our custom pool configuration
*/
static gboolean
gst_va_base_dec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
{
GstAllocator *allocator = NULL, *other_allocator = NULL;
GstAllocationParams other_params, params;
GstBufferPool *pool = NULL, *other_pool = NULL;
GstCaps *caps = NULL;
GstVideoInfo info;
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
guint size = 0, min, max;
gboolean update_pool = FALSE, update_allocator = FALSE;
gboolean has_videometa, has_video_crop_meta;
gboolean ret = TRUE;
g_assert (base->min_buffers > 0);
gst_query_parse_allocation (query, &caps, NULL);
if (!(caps && gst_video_info_from_caps (&info, caps)))
goto wrong_caps;
has_videometa = gst_query_find_allocation_meta (query,
GST_VIDEO_META_API_TYPE, NULL);
has_video_crop_meta = has_videometa && gst_query_find_allocation_meta (query,
GST_VIDEO_CROP_META_API_TYPE, NULL);
/* 1. The output picture locates in the middle of the decoded buffer,
but the downstream element does not support VideoCropMeta, we
definitely need a copy.
2. Some codec such as H265, it does not clean the DPB when new SPS
comes. The new SPS may set the crop window to top-left corner and
so no video crop is needed here. But we may still have cached frames
in DPB which need a copy. */
if ((_need_video_crop (base) && !has_video_crop_meta) ||
base->apply_video_crop) {
return _decide_allocation_for_video_crop (decoder, query, caps, &info);
}
if (gst_query_get_n_allocation_params (query) > 0) {
gst_query_parse_nth_allocation_param (query, 0, &allocator, &other_params);
if (allocator && !(GST_IS_VA_DMABUF_ALLOCATOR (allocator)
|| GST_IS_VA_ALLOCATOR (allocator))) {
/* save the allocator for the other pool */
other_allocator = allocator;
allocator = NULL;
}
update_allocator = TRUE;
} else {
gst_allocation_params_init (&other_params);
}
gst_allocation_params_init (&params);
if (gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
if (pool) {
if (!GST_IS_VA_POOL (pool)) {
GST_DEBUG_OBJECT (base,
"may need other pool for copy frames %" GST_PTR_FORMAT, pool);
other_pool = pool;
pool = NULL;
}
}
min += base->min_buffers;
size = MAX (size, GST_VIDEO_INFO_SIZE (&info));
update_pool = TRUE;
} else {
size = GST_VIDEO_INFO_SIZE (&info);
min = base->min_buffers;
max = 0;
}
if (!allocator) {
if (!(allocator = _create_allocator (base, caps))) {
ret = FALSE;
goto cleanup;
}
}
if (!pool)
pool = gst_va_pool_new ();
{
GstStructure *config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, min, max);
gst_buffer_pool_config_set_allocator (config, allocator, &params);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
if (base->need_valign) {
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
gst_buffer_pool_config_set_video_alignment (config, &base->valign);
}
gst_buffer_pool_config_set_va_allocation_params (config,
VA_SURFACE_ATTRIB_USAGE_HINT_DECODER);
if (!gst_buffer_pool_set_config (pool, config)) {
ret = FALSE;
goto cleanup;
}
}
if (update_allocator)
gst_query_set_nth_allocation_param (query, 0, allocator, &params);
else
gst_query_add_allocation_param (query, allocator, &params);
if (update_pool)
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
else
gst_query_add_allocation_pool (query, pool, size, min, max);
base->copy_frames = (!has_videometa && gst_va_pool_requires_video_meta (pool)
&& gst_caps_is_raw (caps));
if (base->copy_frames) {
if (other_pool) {
gst_object_replace ((GstObject **) & base->other_pool,
(GstObject *) other_pool);
} else {
_create_other_pool (base, other_allocator, &other_params, caps, size);
}
GST_DEBUG_OBJECT (base, "Use the other pool for copy %" GST_PTR_FORMAT,
base->other_pool);
} else {
gst_clear_object (&base->other_pool);
}
cleanup:
gst_clear_object (&allocator);
gst_clear_object (&other_allocator);
gst_clear_object (&pool);
gst_clear_object (&other_pool);
/* There's no need to chain decoder's method since all what is
* needed is done. */
return ret;
wrong_caps:
{
GST_WARNING_OBJECT (base, "No valid caps");
return FALSE;
}
}
static void
gst_va_base_dec_set_context (GstElement * element, GstContext * context)
{
GstVaDisplay *old_display, *new_display;
GstVaBaseDec *base = GST_VA_BASE_DEC (element);
GstVaBaseDecClass *klass = GST_VA_BASE_DEC_GET_CLASS (base);
gboolean ret;
old_display = base->display ? gst_object_ref (base->display) : NULL;
ret = gst_va_handle_set_context (element, context, klass->render_device_path,
&base->display);
new_display = base->display ? gst_object_ref (base->display) : NULL;
if (!ret
|| (old_display && new_display && old_display != new_display
&& base->decoder)) {
GST_ELEMENT_WARNING (base, RESOURCE, BUSY,
("Can't replace VA display while operating"), (NULL));
}
gst_clear_object (&old_display);
gst_clear_object (&new_display);
GST_ELEMENT_CLASS (GST_VA_BASE_DEC_GET_PARENT_CLASS
(element))->set_context (element, context);
}
void
gst_va_base_dec_init (GstVaBaseDec * base, GstDebugCategory * cat)
{
base->debug_category = cat;
}
void
gst_va_base_dec_class_init (GstVaBaseDecClass * klass, GstVaCodecs codec,
const gchar * render_device_path, GstCaps * sink_caps, GstCaps * src_caps,
GstCaps * doc_src_caps, GstCaps * doc_sink_caps)
{
GstPadTemplate *sink_pad_templ, *src_pad_templ;
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (klass);
klass->parent_decoder_class = g_type_class_peek_parent (klass);
klass->codec = codec;
klass->render_device_path = g_strdup (render_device_path);
sink_pad_templ = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
sink_caps);
gst_element_class_add_pad_template (element_class, sink_pad_templ);
if (doc_sink_caps) {
gst_pad_template_set_documentation_caps (sink_pad_templ, doc_sink_caps);
gst_caps_unref (doc_sink_caps);
}
src_pad_templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
src_caps);
gst_element_class_add_pad_template (element_class, src_pad_templ);
if (doc_src_caps) {
gst_pad_template_set_documentation_caps (src_pad_templ, doc_src_caps);
gst_caps_unref (doc_src_caps);
}
element_class->set_context = GST_DEBUG_FUNCPTR (gst_va_base_dec_set_context);
decoder_class->open = GST_DEBUG_FUNCPTR (gst_va_base_dec_open);
decoder_class->close = GST_DEBUG_FUNCPTR (gst_va_base_dec_close);
decoder_class->stop = GST_DEBUG_FUNCPTR (gst_va_base_dec_stop);
decoder_class->getcaps = GST_DEBUG_FUNCPTR (gst_va_base_dec_getcaps);
decoder_class->src_query = GST_DEBUG_FUNCPTR (gst_va_base_dec_src_query);
decoder_class->sink_query = GST_DEBUG_FUNCPTR (gst_va_base_dec_sink_query);
decoder_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_va_base_dec_decide_allocation);
}
static GstVideoFormat
_default_video_format_from_chroma (guint chroma_type)
{
switch (chroma_type) {
/* 4:2:0 */
case VA_RT_FORMAT_YUV420:
return GST_VIDEO_FORMAT_NV12;
case VA_RT_FORMAT_YUV420_10:
return GST_VIDEO_FORMAT_P010_10LE;
case VA_RT_FORMAT_YUV420_12:
return GST_VIDEO_FORMAT_P012_LE;
/* 4:2:2 */
case VA_RT_FORMAT_YUV422:
return GST_VIDEO_FORMAT_UYVY;
case VA_RT_FORMAT_YUV422_10:
return GST_VIDEO_FORMAT_Y210;
case VA_RT_FORMAT_YUV422_12:
return GST_VIDEO_FORMAT_Y212_LE;
/* 4:4:4 */
case VA_RT_FORMAT_YUV444:
return GST_VIDEO_FORMAT_VUYA;
case VA_RT_FORMAT_YUV444_10:
return GST_VIDEO_FORMAT_Y410;
case VA_RT_FORMAT_YUV444_12:
return GST_VIDEO_FORMAT_Y412_LE;
default:
return GST_VIDEO_FORMAT_UNKNOWN;
}
}
/* Check whether the downstream supports VideoMeta; if not, we need to
* fallback to the system memory. */
static gboolean
_downstream_has_video_meta (GstVaBaseDec * base, GstCaps * caps)
{
GstQuery *query;
gboolean ret = FALSE;
query = gst_query_new_allocation (caps, FALSE);
if (gst_pad_peer_query (GST_VIDEO_DECODER_SRC_PAD (base), query))
ret = gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
gst_query_unref (query);
return ret;
}
void
gst_va_base_dec_get_preferred_format_and_caps_features (GstVaBaseDec * base,
GstVideoFormat * format, GstCapsFeatures ** capsfeatures)
{
GstCaps *peer_caps, *preferred_caps = NULL;
GstCapsFeatures *features;
GstStructure *structure;
const GValue *v_format;
guint num_structures, i;
gboolean is_any;
g_return_if_fail (base);
/* verify if peer caps is any */
{
peer_caps =
gst_pad_peer_query_caps (GST_VIDEO_DECODER_SRC_PAD (base), NULL);
is_any = gst_caps_is_any (peer_caps);
gst_clear_caps (&peer_caps);
}
peer_caps = gst_pad_get_allowed_caps (GST_VIDEO_DECODER_SRC_PAD (base));
GST_DEBUG_OBJECT (base, "Allowed caps %" GST_PTR_FORMAT, peer_caps);
/* prefer memory:VASurface over other caps features */
num_structures = gst_caps_get_size (peer_caps);
for (i = 0; i < num_structures; i++) {
features = gst_caps_get_features (peer_caps, i);
structure = gst_caps_get_structure (peer_caps, i);
if (gst_caps_features_is_any (features))
continue;
if (gst_caps_features_contains (features, GST_CAPS_FEATURE_MEMORY_VA)) {
preferred_caps = gst_caps_new_full (gst_structure_copy (structure), NULL);
gst_caps_set_features_simple (preferred_caps,
gst_caps_features_copy (features));
break;
}
}
if (!preferred_caps)
preferred_caps = peer_caps;
else
gst_clear_caps (&peer_caps);
if (gst_caps_is_empty (preferred_caps)) {
if (capsfeatures)
*capsfeatures = NULL; /* system memory */
if (format)
*format = _default_video_format_from_chroma (base->rt_format);
goto bail;
}
if (capsfeatures) {
features = gst_caps_get_features (preferred_caps, 0);
if (features) {
*capsfeatures = gst_caps_features_copy (features);
if (is_any
&& !gst_caps_features_is_equal (features,
GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY)
&& !_downstream_has_video_meta (base, preferred_caps)) {
GST_INFO_OBJECT (base, "Downstream reports ANY caps but without"
" VideoMeta support; fallback to system memory.");
gst_caps_features_free (*capsfeatures);
*capsfeatures = NULL;
}
} else {
*capsfeatures = NULL;
}
}
if (!format)
goto bail;
structure = gst_caps_get_structure (preferred_caps, 0);
v_format = gst_structure_get_value (structure, "format");
if (!v_format)
*format = _default_video_format_from_chroma (base->rt_format);
else if (G_VALUE_HOLDS_STRING (v_format))
*format = gst_video_format_from_string (g_value_get_string (v_format));
else if (GST_VALUE_HOLDS_LIST (v_format)) {
guint num_values = gst_value_list_get_size (v_format);
for (i = 0; i < num_values; i++) {
GstVideoFormat fmt;
const GValue *v_fmt = gst_value_list_get_value (v_format, i);
if (!v_fmt)
continue;
fmt = gst_video_format_from_string (g_value_get_string (v_fmt));
if (gst_va_chroma_from_video_format (fmt) == base->rt_format) {
*format = fmt;
break;
}
}
if (i == num_values)
*format = _default_video_format_from_chroma (base->rt_format);
}
bail:
gst_clear_caps (&preferred_caps);
}
static gboolean
_copy_buffer_and_apply_video_crop (GstVaBaseDec * base,
GstVideoFrame * src_frame, GstVideoFrame * dest_frame,
GstVideoCropMeta * video_crop)
{
GstVideoInfo dst_info = dest_frame->info;
dst_info.fps_n = src_frame->info.fps_n;
dst_info.fps_d = src_frame->info.fps_d;
if (base->convert) {
gboolean new_convert = FALSE;
gint x = 0, y = 0, width = 0, height = 0;
const GstStructure *config = gst_video_converter_get_config (base->convert);
if (!gst_structure_get_int (config, GST_VIDEO_CONVERTER_OPT_SRC_X, &x)
|| !gst_structure_get_int (config, GST_VIDEO_CONVERTER_OPT_SRC_Y, &y)
|| !gst_structure_get_int (config, GST_VIDEO_CONVERTER_OPT_SRC_WIDTH,
&width)
|| !gst_structure_get_int (config, GST_VIDEO_CONVERTER_OPT_SRC_HEIGHT,
&height))
new_convert = TRUE;
new_convert |= (video_crop->x != x);
new_convert |= (video_crop->y != y);
new_convert |= (video_crop->width != width);
new_convert |= (video_crop->height != height);
/* No need to check dest, it always has (0,0) -> (width, height) */
if (new_convert)
g_clear_pointer (&base->convert, gst_video_converter_free);
}
if (!base->convert) {
base->convert = gst_video_converter_new (&src_frame->info, &dst_info,
gst_structure_new ("options",
GST_VIDEO_CONVERTER_OPT_DITHER_METHOD,
GST_TYPE_VIDEO_DITHER_METHOD, GST_VIDEO_DITHER_NONE,
GST_VIDEO_CONVERTER_OPT_DITHER_QUANTIZATION,
G_TYPE_UINT, 0,
GST_VIDEO_CONVERTER_OPT_CHROMA_MODE,
GST_TYPE_VIDEO_CHROMA_MODE, GST_VIDEO_CHROMA_MODE_NONE,
GST_VIDEO_CONVERTER_OPT_MATRIX_MODE,
GST_TYPE_VIDEO_MATRIX_MODE, GST_VIDEO_MATRIX_MODE_NONE,
GST_VIDEO_CONVERTER_OPT_SRC_X, G_TYPE_INT, video_crop->x,
GST_VIDEO_CONVERTER_OPT_SRC_Y, G_TYPE_INT, video_crop->y,
GST_VIDEO_CONVERTER_OPT_SRC_WIDTH, G_TYPE_INT, video_crop->width,
GST_VIDEO_CONVERTER_OPT_SRC_HEIGHT, G_TYPE_INT, video_crop->height,
GST_VIDEO_CONVERTER_OPT_DEST_X, G_TYPE_INT, 0,
GST_VIDEO_CONVERTER_OPT_DEST_Y, G_TYPE_INT, 0,
GST_VIDEO_CONVERTER_OPT_DEST_WIDTH, G_TYPE_INT, video_crop->width,
GST_VIDEO_CONVERTER_OPT_DEST_HEIGHT, G_TYPE_INT, video_crop->height,
NULL));
if (!base->convert) {
GST_WARNING_OBJECT (base, "failed to create a video convert");
return FALSE;
}
}
gst_video_converter_frame (base->convert, src_frame, dest_frame);
return TRUE;
}
gboolean
gst_va_base_dec_copy_output_buffer (GstVaBaseDec * base,
GstVideoCodecFrame * codec_frame)
{
GstVideoFrame src_frame;
GstVideoFrame dest_frame;
GstVideoInfo dest_vinfo;
GstVideoInfo *src_vinfo;
GstBuffer *buffer = NULL;
GstVideoCropMeta *video_crop;
GstFlowReturn ret;
g_return_val_if_fail (base && base->output_state, FALSE);
if (!base->other_pool)
return FALSE;
if (!gst_buffer_pool_set_active (base->other_pool, TRUE))
return FALSE;
src_vinfo = &base->output_state->info;
gst_video_info_set_format (&dest_vinfo, GST_VIDEO_INFO_FORMAT (src_vinfo),
base->width, base->height);
ret = gst_buffer_pool_acquire_buffer (base->other_pool, &buffer, NULL);
if (ret != GST_FLOW_OK)
goto fail;
if (!gst_video_frame_map (&src_frame, src_vinfo, codec_frame->output_buffer,
GST_MAP_READ))
goto fail;
if (!gst_video_frame_map (&dest_frame, &dest_vinfo, buffer, GST_MAP_WRITE)) {
gst_video_frame_unmap (&src_frame);
goto fail;
}
video_crop = gst_buffer_get_video_crop_meta (codec_frame->output_buffer);
if (video_crop) {
if (!_copy_buffer_and_apply_video_crop (base,
&src_frame, &dest_frame, video_crop)) {
gst_video_frame_unmap (&src_frame);
gst_video_frame_unmap (&dest_frame);
GST_ERROR_OBJECT (base, "fail to apply the video crop.");
goto fail;
}
} else {
/* gst_video_frame_copy can crop this, but does not know, so let
* make it think it's all right */
GST_VIDEO_INFO_WIDTH (&src_frame.info) = base->width;
GST_VIDEO_INFO_HEIGHT (&src_frame.info) = base->height;
if (!gst_video_frame_copy (&dest_frame, &src_frame)) {
gst_video_frame_unmap (&src_frame);
gst_video_frame_unmap (&dest_frame);
goto fail;
}
}
gst_video_frame_unmap (&src_frame);
gst_video_frame_unmap (&dest_frame);
gst_buffer_replace (&codec_frame->output_buffer, buffer);
gst_buffer_unref (buffer);
return TRUE;
fail:
if (buffer)
gst_buffer_unref (buffer);
GST_ERROR_OBJECT (base, "Failed copy output buffer.");
return FALSE;
}
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