static void gst_vlc_video_pool_finalize( GObject *p_object )
{
GstVlcVideoPool *p_pool = GST_VLC_VIDEO_POOL_CAST( p_object );
gst_object_unref( p_pool->p_allocator );
G_OBJECT_CLASS( parent_class )->finalize( p_object );
}
static gboolean gst_vlc_video_sink_propose_allocation( GstBaseSink* p_bsink,
GstQuery* p_query )
{
GstVlcVideoSink *p_vsink = GST_VLC_VIDEO_SINK( p_bsink );
GstCaps *p_caps;
gboolean b_need_pool;
GstBufferPool* p_pool = NULL;
gsize i_size;
gst_query_parse_allocation (p_query, &p_caps, &b_need_pool);
if( p_caps == NULL )
goto no_caps;
if( b_need_pool )
{
GstVideoInfo info;
if( !gst_video_info_from_caps( &info, p_caps ))
goto invalid_caps;
p_pool = (GstBufferPool*) gst_vlc_video_sink_create_pool( p_vsink,
p_caps, info.size, 2 );
if( p_pool == NULL )
goto no_pool;
i_size = GST_VIDEO_INFO_SIZE( &GST_VLC_VIDEO_POOL_CAST( p_pool )->info);
}
if( p_pool )
{
/* we need at least 2 buffer because we hold on to the last one */
gst_query_add_allocation_pool( p_query, p_pool, i_size, 2, 0);
gst_object_unref (p_pool);
}
/* we support various metadata */
gst_query_add_allocation_meta( p_query, GST_VIDEO_META_API_TYPE, NULL );
return TRUE;
/* ERRORS */
no_pool:
{
msg_Err( p_vsink->p_dec, "failed to create the pool" );
return FALSE;
}
no_caps:
{
msg_Err( p_vsink->p_dec, "no caps in allocation query" );
return FALSE;
}
invalid_caps:
{
msg_Err( p_vsink->p_dec, "invalid caps in allocation query" );
return FALSE;
}
}
static void gst_vlc_video_pool_free_buffer( GstBufferPool *p_pool,
GstBuffer *p_buffer )
{
GstVlcVideoPool* p_vpool = GST_VLC_VIDEO_POOL_CAST( p_pool );
gst_vlc_picture_plane_allocator_release( p_vpool->p_allocator, p_buffer );
GST_BUFFER_POOL_CLASS( parent_class )->free_buffer( p_pool, p_buffer );
return;
}
static GstFlowReturn gst_vlc_video_pool_acquire_buffer( GstBufferPool *p_pool,
GstBuffer **p_buffer, GstBufferPoolAcquireParams *p_params )
{
GstVlcVideoPool *p_vpool = GST_VLC_VIDEO_POOL_CAST( p_pool );
GstVideoInfo *p_info;
GstFlowReturn result;
result = GST_BUFFER_POOL_CLASS( parent_class)->acquire_buffer( p_pool,
p_buffer, p_params );
if( result == GST_FLOW_OK &&
!gst_vlc_picture_plane_allocator_hold( p_vpool->p_allocator,
*p_buffer ))
result = GST_FLOW_EOS;
return result;
}
static GstFlowReturn gst_vlc_video_pool_alloc_buffer( GstBufferPool *p_pool,
GstBuffer **p_buffer, GstBufferPoolAcquireParams *p_params)
{
GstVlcVideoPool *p_vpool = GST_VLC_VIDEO_POOL_CAST( p_pool );
GstVideoInfo *p_info = &p_vpool->info;
*p_buffer = gst_buffer_new( );
if( !gst_vlc_picture_plane_allocator_alloc( p_vpool->p_allocator,
*p_buffer ))
return GST_FLOW_EOS;
if( p_vpool->b_add_metavideo )
{
msg_Dbg( p_vpool->p_dec, "meta video enabled" );
gst_buffer_add_video_meta_full( *p_buffer, GST_VIDEO_FRAME_FLAG_NONE,
GST_VIDEO_INFO_FORMAT( p_info ), GST_VIDEO_INFO_WIDTH( p_info ),
GST_VIDEO_INFO_HEIGHT( p_info ),
GST_VIDEO_INFO_N_PLANES( p_info ),
p_info->offset, p_info->stride );
}
return GST_FLOW_OK;
}
static gboolean gst_vlc_video_pool_set_config( GstBufferPool *p_pool,
GstStructure *p_config )
{
GstVlcVideoPool *p_vpool = GST_VLC_VIDEO_POOL_CAST( p_pool );
GstCaps *p_caps;
GstVideoInfo info;
guint size, min_buffers, max_buffers;
GstAllocator *p_allocator;
GstAllocationParams params;
if( !gst_buffer_pool_config_get_params( p_config, &p_caps, &size,
&min_buffers, &max_buffers ))
goto wrong_config;
if( p_caps == NULL )
goto no_caps;
gst_buffer_pool_config_get_allocator( p_config, &p_allocator, ¶ms );
if( p_allocator )
{
if( !GST_IS_VLC_PICTURE_PLANE_ALLOCATOR( p_allocator ))
goto unsupported_allocator;
else
{
if( p_vpool->p_allocator )
gst_object_unref( p_vpool->p_allocator );
p_vpool->p_allocator = gst_object_ref ( p_allocator );
}
}
/* now parse the caps from the config */
if ( !gst_video_info_from_caps( &info, p_caps ))
goto wrong_caps;
/* enable metadata based on config of the pool */
p_vpool->b_add_metavideo =
gst_buffer_pool_config_has_option( p_config,
GST_BUFFER_POOL_OPTION_VIDEO_META );
if( !gst_vlc_picture_plane_allocator_query_format( p_vpool->p_allocator,
&info, p_caps))
goto unknown_format;
if( p_vpool->p_caps )
gst_caps_unref( p_vpool->p_caps );
p_vpool->p_caps = gst_caps_ref( p_caps );
p_vpool->info = info;
gst_buffer_pool_config_set_params( p_config, p_caps, info.size,
min_buffers, max_buffers );
return GST_BUFFER_POOL_CLASS (parent_class)->set_config( p_pool, p_config );
/* ERRORS */
wrong_config:
{
msg_Err(p_vpool->p_dec, "wrong pool config" );
return FALSE;
}
no_caps:
{
msg_Err(p_vpool->p_dec, "no input caps in config" );
return FALSE;
}
wrong_caps:
{
msg_Err(p_vpool->p_dec, "invalid caps" );
return FALSE;
}
unknown_format:
{
msg_Err(p_vpool->p_dec, "format unsupported" );
return FALSE;
}
unsupported_allocator:
{
msg_Err(p_vpool->p_dec, "allocator unsupported" );
return FALSE;
}
}
