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plugins: factor out decide_allocation() hook.

Browse source 
Add a default decide_allocation() hook to GstVaapiPluginBase. The caps
feature argument can be used to force a bufferpool with a specific kind
of memory.
This commit is contained in:
Gwenole Beauchesne 2014-08-21 14:10:36 +02:00
parent 1ef5a3a200
commit d0a9575fc2
3 changed files with 158 additions and 110 deletions
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119
gst/vaapi/gstvaapidecode.c
View file

@ -522,40 +522,26 @@ gst_vaapidecode_decide_allocation(GstVideoDecoder *vdec, GstQuery *query)
{
GstVaapiDecode * const decode = GST_VAAPIDECODE(vdec);
GstCaps *caps = NULL;
GstBufferPool *pool;
GstStructure *config;
GstVideoInfo vi;
guint size, min, max;
gboolean need_pool, update_pool;
gboolean has_video_meta = FALSE;
gboolean has_video_alignment = FALSE;
#if GST_CHECK_VERSION(1,1,0) && USE_GLX
gboolean has_texture_upload_meta = FALSE;
#endif
gboolean need_pool;
GstVideoCodecState *state;
GstVaapiCapsFeature feature;
gst_query_parse_allocation(query, &caps, &need_pool);
if (!caps)
goto error_no_caps;
state = gst_video_decoder_get_output_state(vdec);
decode->has_texture_upload_meta = FALSE;
has_video_meta = gst_query_find_allocation_meta(query,
GST_VIDEO_META_API_TYPE, NULL);
#if GST_CHECK_VERSION(1,1,0) && USE_GLX
has_texture_upload_meta = gst_query_find_allocation_meta(query,
GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, NULL);
decode->has_texture_upload_meta =
gst_vaapi_find_preferred_caps_feature(GST_VIDEO_DECODER_SRC_PAD(vdec),
GST_VIDEO_FORMAT_ENCODED) ==
GST_VAAPI_CAPS_FEATURE_GL_TEXTURE_UPLOAD_META;
#endif
feature = decode->has_texture_upload_meta ?
GST_VAAPI_CAPS_FEATURE_GL_TEXTURE_UPLOAD_META :
GST_VAAPI_CAPS_FEATURE_VAAPI_SURFACE;
/* Update src caps if feature is not handled downstream */
state = gst_video_decoder_get_output_state(vdec);
if (!gst_caps_is_always_compatible(caps, state->caps)) {
if (decode->has_texture_upload_meta)
gst_video_info_set_format(&state->info, GST_VIDEO_FORMAT_RGBA,
@ -565,95 +551,8 @@ gst_vaapidecode_decide_allocation(GstVideoDecoder *vdec, GstQuery *query)
}
gst_video_codec_state_unref(state);
gst_video_info_init(&vi);
gst_video_info_from_caps(&vi, caps);
if (GST_VIDEO_INFO_FORMAT(&vi) == GST_VIDEO_FORMAT_ENCODED)
gst_video_info_set_format(&vi, GST_VIDEO_FORMAT_I420,
GST_VIDEO_INFO_WIDTH(&vi), GST_VIDEO_INFO_HEIGHT(&vi));
g_return_val_if_fail(GST_VAAPI_PLUGIN_BASE_DISPLAY(decode) != NULL, FALSE);
if (gst_query_get_n_allocation_pools(query) > 0) {
gst_query_parse_nth_allocation_pool(query, 0, &pool, &size, &min, &max);
size = MAX(size, vi.size);
update_pool = TRUE;
/* Check whether downstream element proposed a bufferpool but did
not provide a correct propose_allocation() implementation */
has_video_alignment = gst_buffer_pool_has_option(pool,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
}
else {
pool = NULL;
size = vi.size;
min = max = 0;
update_pool = FALSE;
}
if (!pool || !gst_buffer_pool_has_option(pool,
GST_BUFFER_POOL_OPTION_VAAPI_VIDEO_META)) {
GST_INFO("no pool or doesn't support GstVaapiVideoMeta, "
"making new pool");
if (pool)
gst_object_unref(pool);
pool = gst_vaapi_video_buffer_pool_new(
GST_VAAPI_PLUGIN_BASE_DISPLAY(decode));
if (!pool)
goto error_create_pool;
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_VAAPI_VIDEO_META);
gst_buffer_pool_set_config(pool, config);
}
if (has_video_meta) {
config = gst_buffer_pool_get_config(pool);
gst_buffer_pool_config_add_option(config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
#if GST_CHECK_VERSION(1,1,0) && USE_GLX
if (has_texture_upload_meta)
gst_buffer_pool_config_add_option(config,
GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
#endif
gst_buffer_pool_set_config(pool, config);
}
else if (has_video_alignment) {
config = gst_buffer_pool_get_config(pool);
gst_buffer_pool_config_add_option(config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
gst_buffer_pool_set_config(pool, config);
}
#if GST_CHECK_VERSION(1,1,0) && USE_GLX
if (decode->has_texture_upload_meta && !has_texture_upload_meta) {
config = gst_buffer_pool_get_config(pool);
gst_buffer_pool_config_add_option(config,
GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
gst_buffer_pool_set_config(pool, config);
}
#endif
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);
if (pool)
gst_object_unref(pool);
return TRUE;
/* ERRORS */
error_no_caps:
{
GST_ERROR("no caps specified");
return FALSE;
}
error_create_pool:
{
GST_ERROR("failed to create buffer pool");
return FALSE;
}
return gst_vaapi_plugin_base_decide_allocation(GST_VAAPI_PLUGIN_BASE(vdec),
query, feature);
}
#endif

141
gst/vaapi/gstvaapipluginbase.c
View file

@ -206,6 +206,7 @@ gst_vaapi_plugin_base_close (GstVaapiPluginBase * plugin)
gst_object_unref (plugin->sinkpad_buffer_pool);
plugin->sinkpad_buffer_pool = NULL;
}
g_clear_object (&plugin->srcpad_buffer_pool);
#endif
gst_caps_replace (&plugin->srcpad_caps, NULL);
@ -453,6 +454,146 @@ error_no_caps:
}
#endif
/**
* gst_vaapi_plugin_base_decide_allocation:
* @plugin: a #GstVaapiPluginBase
* @query: the allocation query to parse
* @feature: the desired #GstVaapiCapsFeature, or zero to find the
* preferred one
*
* Decides allocation parameters for the downstream elements.
*
* Returns: %TRUE if successful, %FALSE otherwise.
*/
#if GST_CHECK_VERSION(1,0,0)
gboolean
gst_vaapi_plugin_base_decide_allocation (GstVaapiPluginBase * plugin,
GstQuery * query, guint feature)
{
GstCaps *caps = NULL;
GstBufferPool *pool;
GstStructure *config;
GstVideoInfo vi;
guint size, min, max;
gboolean need_pool, update_pool;
gboolean has_video_meta = FALSE;
gboolean has_video_alignment = FALSE;
#if GST_CHECK_VERSION(1,1,0) && USE_GLX
gboolean has_texture_upload_meta = FALSE;
#endif
g_return_val_if_fail (plugin->display != NULL, FALSE);
gst_query_parse_allocation (query, &caps, &need_pool);
if (!caps)
goto error_no_caps;
if (!feature)
feature =
gst_vaapi_find_preferred_caps_feature (plugin->srcpad,
GST_VIDEO_FORMAT_ENCODED);
has_video_meta = gst_query_find_allocation_meta (query,
GST_VIDEO_META_API_TYPE, NULL);
#if GST_CHECK_VERSION(1,1,0) && USE_GLX
has_texture_upload_meta = gst_query_find_allocation_meta (query,
GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, NULL);
#endif
gst_video_info_init (&vi);
gst_video_info_from_caps (&vi, caps);
if (GST_VIDEO_INFO_FORMAT (&vi) == GST_VIDEO_FORMAT_ENCODED)
gst_video_info_set_format (&vi, GST_VIDEO_FORMAT_I420,
GST_VIDEO_INFO_WIDTH (&vi), GST_VIDEO_INFO_HEIGHT (&vi));
if (gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
size = MAX (size, vi.size);
update_pool = TRUE;
/* Check whether downstream element proposed a bufferpool but did
not provide a correct propose_allocation() implementation */
has_video_alignment = gst_buffer_pool_has_option (pool,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
} else {
pool = NULL;
size = vi.size;
min = max = 0;
update_pool = FALSE;
}
/* GstVaapiVideoMeta is mandatory, and this implies VA surface memory */
if (!pool || !gst_buffer_pool_has_option (pool,
GST_BUFFER_POOL_OPTION_VAAPI_VIDEO_META)) {
GST_INFO_OBJECT (plugin, "no pool or doesn't support GstVaapiVideoMeta, "
"making new pool");
if (pool)
gst_object_unref (pool);
pool = gst_vaapi_video_buffer_pool_new (plugin->display);
if (!pool)
goto error_create_pool;
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_VAAPI_VIDEO_META);
gst_buffer_pool_set_config (pool, config);
}
/* Check whether GstVideoMeta, or GstVideoAlignment, is needed (raw video) */
if (has_video_meta) {
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
#if GST_CHECK_VERSION(1,1,0) && USE_GLX
if (has_texture_upload_meta)
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
#endif
gst_buffer_pool_set_config (pool, config);
} else if (has_video_alignment) {
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
gst_buffer_pool_set_config (pool, config);
}
/* GstVideoGLTextureUploadMeta (OpenGL) */
#if GST_CHECK_VERSION(1,1,0) && USE_GLX
if (feature == GST_VAAPI_CAPS_FEATURE_GL_TEXTURE_UPLOAD_META
&& !has_texture_upload_meta) {
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
gst_buffer_pool_set_config (pool, config);
}
#endif
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);
g_clear_object (&plugin->srcpad_buffer_pool);
plugin->srcpad_buffer_pool = pool;
return TRUE;
/* ERRORS */
error_no_caps:
{
GST_ERROR_OBJECT (plugin, "no caps specified");
return FALSE;
}
error_create_pool:
{
GST_ERROR_OBJECT (plugin, "failed to create buffer pool");
return FALSE;
}
}
#endif
/**
* gst_vaapi_plugin_base_allocate_input_buffer:
* @plugin: a #GstVaapiPluginBase

8
gst/vaapi/gstvaapipluginbase.h
View file

@ -136,6 +136,9 @@ struct _GstVaapiPluginBase
gboolean srcpad_caps_changed;
GstVideoInfo srcpad_info;
GstPadQueryFunction srcpad_query;
#if GST_CHECK_VERSION(1,0,0)
GstBufferPool *srcpad_buffer_pool;
#endif
GstVaapiDisplay *display;
GstVaapiDisplayType display_type;
@ -215,6 +218,11 @@ gboolean
gst_vaapi_plugin_base_propose_allocation (GstVaapiPluginBase * plugin,
GstQuery * query);
G_GNUC_INTERNAL
gboolean
gst_vaapi_plugin_base_decide_allocation (GstVaapiPluginBase * plugin,
GstQuery * query, guint feature);
G_GNUC_INTERNAL
GstFlowReturn
gst_vaapi_plugin_base_allocate_input_buffer (GstVaapiPluginBase * plugin,