static gboolean
gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query)
{
gboolean res = FALSE;
GstGLMixer *mix = GST_GL_MIXER (agg);
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
{
res = gst_gl_handle_context_query ((GstElement *) mix, query,
&mix->display, &mix->other_context);
if (mix->display)
gst_gl_display_filter_gl_api (mix->display,
mix_class->supported_gl_api);
break;
}
case GST_QUERY_CAPS:
res = gst_gl_mixer_query_caps (agg->srcpad, agg, query);
break;
default:
res = GST_AGGREGATOR_CLASS (parent_class)->src_query (agg, query);
break;
}
return res;
}
static gboolean
gst_gl_mixer_process_buffers (GstGLMixer * mix, GstBuffer * outbuf)
{
GList *walk;
guint i, array_index = 0;
GstElement *element = GST_ELEMENT (mix);
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
GST_OBJECT_LOCK (mix);
walk = GST_ELEMENT (mix)->sinkpads;
i = mix->frames->len;
g_ptr_array_set_size (mix->frames, element->numsinkpads);
for (; i < element->numsinkpads; i++)
mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
while (walk) { /* We walk with this list because it's ordered */
GstVideoAggregatorPad *vaggpad = walk->data;
walk = g_list_next (walk);
if (vaggpad->buffer != NULL) {
/* put buffer into array */
mix->array_buffers->pdata[array_index] = vaggpad->buffer;
}
++array_index;
}
GST_OBJECT_UNLOCK (mix);
return mix_class->process_buffers (mix, mix->array_buffers, outbuf);
}
static gboolean
gst_gl_mixer_stop (GstAggregator * agg)
{
GstGLMixer *mix = GST_GL_MIXER (agg);
GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
if (!GST_AGGREGATOR_CLASS (parent_class)->stop (agg))
return FALSE;
GST_OBJECT_LOCK (agg);
g_ptr_array_free (mix->frames, TRUE);
mix->frames = NULL;
g_ptr_array_free (mix->array_buffers, TRUE);
mix->array_buffers = NULL;
GST_OBJECT_UNLOCK (agg);
if (mixer_class->reset)
mixer_class->reset (mix);
if (mix->fbo) {
gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer);
mix->fbo = 0;
mix->depthbuffer = 0;
}
if (mix->download) {
gst_object_unref (mix->download);
mix->download = NULL;
}
gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (mix), _clean_upload, NULL);
if (mix->priv->query) {
gst_query_unref (mix->priv->query);
mix->priv->query = NULL;
}
if (mix->priv->pool) {
gst_object_unref (mix->priv->pool);
mix->priv->pool = NULL;
}
if (mix->display) {
gst_object_unref (mix->display);
mix->display = NULL;
}
if (mix->context) {
gst_object_unref (mix->context);
mix->context = NULL;
}
gst_gl_mixer_reset (mix);
return TRUE;
}
static void
gst_gl_mixer_set_context (GstElement * element, GstContext * context)
{
GstGLMixer *mix = GST_GL_MIXER (element);
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
gst_gl_handle_set_context (element, context, &mix->display,
&mix->other_context);
if (mix->display)
gst_gl_display_filter_gl_api (mix->display, mix_class->supported_gl_api);
}
static GstFlowReturn
gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg, GstBuffer * outbuf)
{
gboolean res = FALSE;
GstGLMixer *mix = GST_GL_MIXER (vagg);
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (vagg);
if (mix_class->process_buffers)
res = gst_gl_mixer_process_buffers (mix, outbuf);
else if (mix_class->process_textures)
res = gst_gl_mixer_process_textures (mix, outbuf);
return res ? GST_FLOW_OK : GST_FLOW_ERROR;
}
static gboolean
gst_gl_mixer_activate (GstGLMixer * mix, gboolean active)
{
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
gboolean result = TRUE;
if (active) {
if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
return FALSE;
gst_gl_display_filter_gl_api (mix->display, mix_class->supported_gl_api);
}
return result;
}
static GstFlowReturn
gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg, GstBuffer * outbuf)
{
gboolean res = FALSE;
GstGLMixer *mix = GST_GL_MIXER (vagg);
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (vagg);
GstGLSyncMeta *sync_meta;
if (mix_class->process_buffers)
res = gst_gl_mixer_process_buffers (mix, outbuf);
else if (mix_class->process_textures)
res = gst_gl_mixer_process_textures (mix, outbuf);
sync_meta = gst_buffer_get_gl_sync_meta (outbuf);
if (sync_meta)
gst_gl_sync_meta_set_sync_point (sync_meta, mix->context);
return res ? GST_FLOW_OK : GST_FLOW_ERROR;
}
gboolean
gst_gl_mixer_process_textures (GstGLMixer * mix, GstBuffer * outbuf)
{
guint i;
GList *walk;
guint out_tex;
gboolean res = TRUE;
guint array_index = 0;
GstVideoFrame out_frame;
gboolean out_gl_wrapped = FALSE;
GstElement *element = GST_ELEMENT (mix);
GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
GstGLMixerPrivate *priv = mix->priv;
GST_TRACE ("Processing buffers");
if (!gst_video_frame_map (&out_frame, &vagg->info, outbuf,
GST_MAP_WRITE | GST_MAP_GL)) {
return FALSE;
}
if (gst_is_gl_memory (out_frame.map[0].memory)) {
out_tex = *(guint *) out_frame.data[0];
} else {
GST_INFO ("Output Buffer does not contain correct memory, "
"attempting to wrap for download");
out_tex = mix->out_tex_id;;
if (!mix->download)
mix->download = gst_gl_download_new (mix->context);
gst_gl_download_set_format (mix->download, &out_frame.info);
out_gl_wrapped = TRUE;
}
GST_OBJECT_LOCK (mix);
walk = element->sinkpads;
i = mix->frames->len;
g_ptr_array_set_size (mix->frames, element->numsinkpads);
for (; i < element->numsinkpads; i++)
mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
while (walk) {
GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
GstVideoAggregatorPad *vaggpad = walk->data;
GstGLMixerFrameData *frame;
frame = g_ptr_array_index (mix->frames, array_index);
frame->pad = pad;
frame->texture = 0;
walk = g_list_next (walk);
if (vaggpad->buffer != NULL) {
guint in_tex;
if (!pad->upload) {
pad->upload = gst_gl_upload_new (mix->context);
gst_gl_upload_set_format (pad->upload, &vaggpad->info);
}
if (!gst_gl_upload_perform_with_buffer (pad->upload,
vaggpad->buffer, &in_tex)) {
++array_index;
pad->mapped = FALSE;
continue;
}
pad->mapped = TRUE;
frame->texture = in_tex;
}
++array_index;
}
g_mutex_lock (&priv->gl_resource_lock);
if (!priv->gl_resource_ready)
g_cond_wait (&priv->gl_resource_cond, &priv->gl_resource_lock);
if (!priv->gl_resource_ready) {
g_mutex_unlock (&priv->gl_resource_lock);
GST_ERROR_OBJECT (mix,
"fbo used to render can't be created, do not run process_textures");
res = FALSE;
goto out;
}
mix_class->process_textures (mix, mix->frames, out_tex);
g_mutex_unlock (&priv->gl_resource_lock);
if (out_gl_wrapped) {
if (!gst_gl_download_perform_with_data (mix->download, out_tex,
out_frame.data)) {
GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s",
"Failed to download video frame"), (NULL));
res = FALSE;
goto out;
}
}
out:
i = 0;
walk = GST_ELEMENT (mix)->sinkpads;
while (walk) {
GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
if (pad->mapped)
gst_gl_upload_release_buffer (pad->upload);
pad->mapped = FALSE;
walk = g_list_next (walk);
i++;
}
GST_OBJECT_UNLOCK (mix);
gst_video_frame_unmap (&out_frame);
return res;
}
static gboolean
gst_gl_mixer_decide_allocation (GstGLMixer * mix, GstQuery * query)
{
GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
GstBufferPool *pool = NULL;
GstStructure *config;
GstCaps *caps;
guint min, max, size;
gboolean update_pool;
GError *error = NULL;
guint idx;
guint out_width, out_height;
GstGLContext *other_context = NULL;
GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
gst_query_parse_allocation (query, &caps, NULL);
if (gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
update_pool = TRUE;
} else {
GstVideoInfo vinfo;
gst_video_info_init (&vinfo);
gst_video_info_from_caps (&vinfo, caps);
size = vinfo.size;
min = max = 0;
update_pool = FALSE;
}
if (!gst_gl_ensure_display (mix, &mix->display))
return FALSE;
if (gst_query_find_allocation_meta (query,
GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, &idx)) {
GstGLContext *context;
const GstStructure *upload_meta_params;
gpointer handle;
gchar *type;
gchar *apis;
gst_query_parse_nth_allocation_meta (query, idx, &upload_meta_params);
if (upload_meta_params) {
if (gst_structure_get (upload_meta_params, "gst.gl.GstGLContext",
GST_GL_TYPE_CONTEXT, &context, NULL) && context) {
GstGLContext *old = mix->context;
mix->context = context;
if (old)
gst_object_unref (old);
} else if (gst_structure_get (upload_meta_params, "gst.gl.context.handle",
G_TYPE_POINTER, &handle, "gst.gl.context.type", G_TYPE_STRING,
&type, "gst.gl.context.apis", G_TYPE_STRING, &apis, NULL)
&& handle) {
GstGLPlatform platform = GST_GL_PLATFORM_NONE;
GstGLAPI gl_apis;
GST_DEBUG ("got GL context handle 0x%p with type %s and apis %s",
handle, type, apis);
platform = gst_gl_platform_from_string (type);
gl_apis = gst_gl_api_from_string (apis);
if (gl_apis && platform)
other_context =
gst_gl_context_new_wrapped (mix->display, (guintptr) handle,
platform, gl_apis);
}
}
}
if (!mix->context) {
mix->context = gst_gl_context_new (mix->display);
if (!gst_gl_context_create (mix->context, other_context, &error))
goto context_error;
}
out_width = GST_VIDEO_INFO_WIDTH (&vagg->info);
out_height = GST_VIDEO_INFO_HEIGHT (&vagg->info);
g_mutex_lock (&mix->priv->gl_resource_lock);
mix->priv->gl_resource_ready = FALSE;
if (mix->fbo) {
gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer);
mix->fbo = 0;
mix->depthbuffer = 0;
}
if (!gst_gl_context_gen_fbo (mix->context, out_width, out_height,
&mix->fbo, &mix->depthbuffer)) {
g_cond_signal (&mix->priv->gl_resource_cond);
g_mutex_unlock (&mix->priv->gl_resource_lock);
goto context_error;
}
if (mix->out_tex_id)
gst_gl_context_del_texture (mix->context, &mix->out_tex_id);
gst_gl_context_gen_texture (mix->context, &mix->out_tex_id,
GST_VIDEO_FORMAT_RGBA, out_width, out_height);
if (mixer_class->set_caps)
mixer_class->set_caps (mix, caps);
mix->priv->gl_resource_ready = TRUE;
g_cond_signal (&mix->priv->gl_resource_cond);
g_mutex_unlock (&mix->priv->gl_resource_lock);
if (!pool)
pool = gst_gl_buffer_pool_new (mix->context);
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, min, max);
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
gst_buffer_pool_set_config (pool, config);
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_object_unref (pool);
return TRUE;
context_error:
{
GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message),
(NULL));
return FALSE;
}
}
static gboolean
gst_gl_mixer_sink_query (GstAggregator * agg, GstAggregatorPad * bpad,
GstQuery * query)
{
gboolean ret = FALSE;
GstGLMixer *mix = GST_GL_MIXER (agg);
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
GST_TRACE ("QUERY %" GST_PTR_FORMAT, query);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:
{
GstCaps *filter, *caps;
gst_query_parse_caps (query, &filter);
caps = gst_gl_mixer_pad_sink_getcaps (GST_PAD (bpad), mix, filter);
gst_query_set_caps_result (query, caps);
gst_caps_unref (caps);
ret = TRUE;
break;
}
case GST_QUERY_ACCEPT_CAPS:
{
GstCaps *caps;
gst_query_parse_accept_caps (query, &caps);
ret = gst_gl_mixer_pad_sink_acceptcaps (GST_PAD (bpad), mix, caps);
gst_query_set_accept_caps_result (query, ret);
ret = TRUE;
break;
}
case GST_QUERY_ALLOCATION:
{
GstQuery *decide_query = NULL;
GST_OBJECT_LOCK (mix);
if (G_UNLIKELY (!mix->priv->negotiated)) {
GST_DEBUG_OBJECT (mix,
"not negotiated yet, can't answer ALLOCATION query");
GST_OBJECT_UNLOCK (mix);
return FALSE;
}
if ((decide_query = mix->priv->query))
gst_query_ref (decide_query);
GST_OBJECT_UNLOCK (mix);
GST_DEBUG_OBJECT (mix,
"calling propose allocation with query %" GST_PTR_FORMAT,
decide_query);
/* pass the query to the propose_allocation vmethod if any */
ret = gst_gl_mixer_propose_allocation (mix, decide_query, query);
if (decide_query)
gst_query_unref (decide_query);
GST_DEBUG_OBJECT (mix, "ALLOCATION ret %d, %" GST_PTR_FORMAT, ret, query);
break;
}
case GST_QUERY_CONTEXT:
{
ret = gst_gl_handle_context_query ((GstElement *) mix, query,
&mix->display, &mix->other_context);
if (mix->display)
gst_gl_display_filter_gl_api (mix->display,
mix_class->supported_gl_api);
break;
}
default:
ret = GST_AGGREGATOR_CLASS (parent_class)->sink_query (agg, bpad, query);
break;
}
return ret;
}
static gboolean
gst_gl_mixer_propose_allocation (GstGLMixer * mix,
GstQuery * decide_query, GstQuery * query)
{
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
GstBufferPool *pool;
GstStructure *config;
GstCaps *caps;
guint size = 0;
gboolean need_pool;
GError *error = NULL;
GstStructure *gl_context;
gchar *platform, *gl_apis;
gpointer handle;
GstAllocator *allocator = NULL;
GstAllocationParams params;
gst_query_parse_allocation (query, &caps, &need_pool);
if (caps == NULL)
goto no_caps;
if ((pool = mix->priv->pool))
gst_object_ref (pool);
if (pool != NULL) {
GstCaps *pcaps;
/* we had a pool, check caps */
GST_DEBUG_OBJECT (mix, "check existing pool caps");
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_get_params (config, &pcaps, &size, NULL, NULL);
if (!gst_caps_is_equal (caps, pcaps)) {
GST_DEBUG_OBJECT (mix, "pool has different caps");
/* different caps, we can't use this pool */
gst_object_unref (pool);
pool = NULL;
}
gst_structure_free (config);
}
if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
return FALSE;
gst_gl_display_filter_gl_api (mix->display, mix_class->supported_gl_api);
if (!mix->context) {
mix->context = gst_gl_context_new (mix->display);
if (!gst_gl_context_create (mix->context, mix->other_context, &error))
goto context_error;
}
if (pool == NULL && need_pool) {
GstVideoInfo info;
if (!gst_video_info_from_caps (&info, caps))
goto invalid_caps;
GST_DEBUG_OBJECT (mix, "create new pool");
pool = gst_gl_buffer_pool_new (mix->context);
/* the normal size of a frame */
size = info.size;
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
if (!gst_buffer_pool_set_config (pool, config))
goto config_failed;
}
if (pool) {
gst_query_add_allocation_pool (query, pool, size, 1, 0);
gst_object_unref (pool);
}
/* we also support various metadata */
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, 0);
if (mix->context->gl_vtable->FenceSync)
gst_query_add_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, 0);
gl_apis = gst_gl_api_to_string (gst_gl_context_get_gl_api (mix->context));
platform =
gst_gl_platform_to_string (gst_gl_context_get_gl_platform (mix->context));
handle = (gpointer) gst_gl_context_get_gl_context (mix->context);
gl_context =
gst_structure_new ("GstVideoGLTextureUploadMeta", "gst.gl.GstGLContext",
GST_GL_TYPE_CONTEXT, mix->context, "gst.gl.context.handle",
G_TYPE_POINTER, handle, "gst.gl.context.type", G_TYPE_STRING, platform,
"gst.gl.context.apis", G_TYPE_STRING, gl_apis, NULL);
gst_query_add_allocation_meta (query,
GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, gl_context);
g_free (gl_apis);
g_free (platform);
gst_structure_free (gl_context);
gst_allocation_params_init (¶ms);
allocator = gst_allocator_find (GST_GL_MEMORY_ALLOCATOR);
gst_query_add_allocation_param (query, allocator, ¶ms);
gst_object_unref (allocator);
return TRUE;
/* ERRORS */
no_caps:
{
GST_DEBUG_OBJECT (mix, "no caps specified");
return FALSE;
}
invalid_caps:
{
GST_DEBUG_OBJECT (mix, "invalid caps specified");
return FALSE;
}
config_failed:
{
GST_DEBUG_OBJECT (mix, "failed setting config");
return FALSE;
}
context_error:
{
GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message),
(NULL));
return FALSE;
}
}
gboolean
gst_gl_mixer_process_textures (GstGLMixer * mix, GstBuffer * outbuf)
{
guint i;
GList *walk;
guint out_tex, out_tex_target;
gboolean res = TRUE;
guint array_index = 0;
GstVideoFrame out_frame;
GstElement *element = GST_ELEMENT (mix);
GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
GstGLMixerPrivate *priv = mix->priv;
gboolean to_download =
gst_caps_features_is_equal (GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY,
gst_caps_get_features (mix->out_caps, 0));
GstMapFlags out_map_flags = GST_MAP_WRITE;
GST_TRACE ("Processing buffers");
to_download |= !gst_is_gl_memory (gst_buffer_peek_memory (outbuf, 0));
if (!to_download)
out_map_flags |= GST_MAP_GL;
if (!gst_video_frame_map (&out_frame, &vagg->info, outbuf, out_map_flags)) {
return FALSE;
}
if (!to_download) {
out_tex = *(guint *) out_frame.data[0];
out_tex_target =
((GstGLMemory *) gst_buffer_peek_memory (outbuf, 0))->tex_target;
} else {
GST_INFO ("Output Buffer does not contain correct memory, "
"attempting to wrap for download");
if (!mix->download)
mix->download = gst_gl_download_new (mix->context);
gst_gl_download_set_format (mix->download, &out_frame.info);
out_tex = mix->out_tex_id;
out_tex_target = GL_TEXTURE_2D;
}
GST_OBJECT_LOCK (mix);
walk = element->sinkpads;
i = mix->frames->len;
g_ptr_array_set_size (mix->frames, element->numsinkpads);
for (; i < element->numsinkpads; i++)
mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
while (walk) {
GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
GstGLMixerPadClass *pad_class = GST_GL_MIXER_PAD_GET_CLASS (pad);
GstVideoAggregatorPad *vaggpad = walk->data;
GstGLMixerFrameData *frame;
frame = g_ptr_array_index (mix->frames, array_index);
frame->pad = pad;
frame->texture = 0;
walk = g_list_next (walk);
if (vaggpad->buffer != NULL) {
g_assert (pad_class->upload_buffer);
if (pad->gl_buffer)
gst_buffer_unref (pad->gl_buffer);
pad->gl_buffer = pad_class->upload_buffer (mix, frame, vaggpad->buffer);
GST_DEBUG_OBJECT (pad,
"uploaded buffer %" GST_PTR_FORMAT " from buffer %" GST_PTR_FORMAT,
pad->gl_buffer, vaggpad->buffer);
}
++array_index;
}
g_mutex_lock (&priv->gl_resource_lock);
if (!priv->gl_resource_ready)
g_cond_wait (&priv->gl_resource_cond, &priv->gl_resource_lock);
if (!priv->gl_resource_ready) {
g_mutex_unlock (&priv->gl_resource_lock);
GST_ERROR_OBJECT (mix,
"fbo used to render can't be created, do not run process_textures");
res = FALSE;
goto out;
}
mix_class->process_textures (mix, mix->frames, out_tex);
g_mutex_unlock (&priv->gl_resource_lock);
if (to_download) {
if (!gst_gl_download_perform_with_data (mix->download,
out_tex, out_tex_target, out_frame.data)) {
GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s",
"Failed to download video frame"), (NULL));
res = FALSE;
goto out;
}
}
out:
i = 0;
walk = GST_ELEMENT (mix)->sinkpads;
while (walk) {
GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
if (pad->upload)
gst_gl_upload_release_buffer (pad->upload);
walk = g_list_next (walk);
i++;
}
GST_OBJECT_UNLOCK (mix);
gst_video_frame_unmap (&out_frame);
return res;
}
