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ivfparse: port to baseparse.
https://bugzilla.gnome.org/show_bug.cgi?id=710855 Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
This commit is contained in:
Gwenole Beauchesne
parent
bf6959000f
commit
3d0ce67fcd
2 changed files with 201 additions and 167 deletions
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@ -51,6 +51,9 @@
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#include "gstivfparse.h"
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#define IVF_FILE_HEADER_SIZE 32
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#define IVF_FRAME_HEADER_SIZE 12
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GST_DEBUG_CATEGORY_STATIC (gst_ivf_parse_debug);
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#define GST_CAT_DEFAULT gst_ivf_parse_debug
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@ -67,48 +70,51 @@ static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_STATIC_CAPS ("ANY")
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);
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GST_BOILERPLATE (GstIvfParse, gst_ivf_parse, GstElement, GST_TYPE_ELEMENT);
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#define gst_ivf_parse_parent_class parent_class
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G_DEFINE_TYPE (GstIvfParse, gst_ivf_parse, GST_TYPE_BASE_PARSE);
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static void gst_ivf_parse_dispose (GObject * object);
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static GstFlowReturn gst_ivf_parse_chain (GstPad * pad, GstBuffer * buf);
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static void gst_ivf_parse_finalize (GObject * object);
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static gboolean gst_ivf_parse_start (GstBaseParse * parse);
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static gboolean gst_ivf_parse_stop (GstBaseParse * parse);
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/* GObject vmethod implementations */
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static void
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gst_ivf_parse_base_init (gpointer gclass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
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gst_element_class_set_static_metadata (element_class,
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"IVF parser",
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"Codec/Demuxer",
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"Demuxes a IVF stream", "Philip Jägenstedt <philipj@opera.com>");
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_factory));
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}
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static GstFlowReturn
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gst_ivf_parse_handle_frame (GstBaseParse * parse,
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GstBaseParseFrame * frame, gint * skipsize);
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/* initialize the ivfparse's class */
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static void
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gst_ivf_parse_class_init (GstIvfParseClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBaseParseClass *gstbaseparse_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstbaseparse_class = (GstBaseParseClass *) klass;
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gobject_class->dispose = gst_ivf_parse_dispose;
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gobject_class->finalize = gst_ivf_parse_finalize;
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gstbaseparse_class->start = gst_ivf_parse_start;
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gstbaseparse_class->stop = gst_ivf_parse_stop;
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gstbaseparse_class->handle_frame = gst_ivf_parse_handle_frame;
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&src_factory));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&sink_factory));
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gst_element_class_set_static_metadata (gstelement_class,
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"IVF parser", "Codec/Demuxer",
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"Demuxes a IVF stream", "Philip Jägenstedt <philipj@opera.com>");
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/* debug category for filtering log messages */
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GST_DEBUG_CATEGORY_INIT (gst_ivf_parse_debug, "ivfparse", 0, "IVF parser");
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}
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static void
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gst_ivf_parse_reset (GstIvfParse * ivf)
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{
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if (ivf->adapter) {
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gst_adapter_clear (ivf->adapter);
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g_object_unref (ivf->adapter);
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ivf->adapter = NULL;
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}
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ivf->state = GST_IVF_PARSE_START;
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ivf->rate_num = 0;
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ivf->rate_den = 0;
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@ -120,84 +126,77 @@ gst_ivf_parse_reset (GstIvfParse * ivf)
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* initialize instance structure
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*/
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static void
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gst_ivf_parse_init (GstIvfParse * ivf, GstIvfParseClass * gclass)
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gst_ivf_parse_init (GstIvfParse * ivf)
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{
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/* sink pad */
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ivf->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
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gst_pad_set_chain_function (ivf->sinkpad,
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GST_DEBUG_FUNCPTR (gst_ivf_parse_chain));
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/* src pad */
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ivf->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
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gst_pad_use_fixed_caps (ivf->srcpad);
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gst_element_add_pad (GST_ELEMENT (ivf), ivf->sinkpad);
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gst_element_add_pad (GST_ELEMENT (ivf), ivf->srcpad);
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/* reset */
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gst_ivf_parse_reset (ivf);
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}
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static void
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gst_ivf_parse_dispose (GObject * object)
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gst_ivf_parse_finalize (GObject * object)
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{
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GstIvfParse *ivf = GST_IVF_PARSE (object);
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GstIvfParse *const ivf = GST_IVF_PARSE (object);
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GST_DEBUG_OBJECT (ivf, "disposing");
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GST_DEBUG_OBJECT (ivf, "finalizing");
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gst_ivf_parse_reset (ivf);
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G_OBJECT_CLASS (parent_class)->dispose (object);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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/* GstElement vmethod implementations */
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/* chain function
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* this function does the actual processing
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*/
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static GstFlowReturn
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gst_ivf_parse_chain (GstPad * pad, GstBuffer * buf)
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static gboolean
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gst_ivf_parse_start (GstBaseParse * parse)
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{
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GstIvfParse *ivf = GST_IVF_PARSE (GST_OBJECT_PARENT (pad));
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gboolean res;
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GstIvfParse *const ivf = GST_IVF_PARSE (parse);
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/* lazy creation of the adapter */
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if (G_UNLIKELY (ivf->adapter == NULL)) {
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ivf->adapter = gst_adapter_new ();
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gst_ivf_parse_reset (ivf);
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/* Minimal file header size needed at start */
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gst_base_parse_set_min_frame_size (parse, IVF_FILE_HEADER_SIZE);
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/* No sync code to detect frame boundaries */
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gst_base_parse_set_syncable (parse, FALSE);
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return TRUE;
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}
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GST_LOG_OBJECT (ivf, "Pushing buffer of size %u to adapter",
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GST_BUFFER_SIZE (buf));
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static gboolean
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gst_ivf_parse_stop (GstBaseParse * parse)
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{
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GstIvfParse *const ivf = GST_IVF_PARSE (parse);
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gst_adapter_push (ivf->adapter, buf); /* adapter takes ownership of buf */
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gst_ivf_parse_reset (ivf);
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res = GST_FLOW_OK;
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return TRUE;
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}
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switch (ivf->state) {
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case GST_IVF_PARSE_START:
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if (gst_adapter_available (ivf->adapter) >= 32) {
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static GstFlowReturn
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gst_ivf_parse_handle_frame_start (GstIvfParse * ivf, GstBaseParseFrame * frame,
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gint * skipsize)
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{
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GstBuffer *const buffer = frame->buffer;
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GstMapInfo map;
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GstFlowReturn ret = GST_FLOW_OK;
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GstCaps *caps;
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const guint8 *data = gst_adapter_peek (ivf->adapter, 32);
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guint32 magic = GST_READ_UINT32_LE (data);
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guint16 version = GST_READ_UINT16_LE (data + 4);
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guint16 header_size = GST_READ_UINT16_LE (data + 6);
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guint32 fourcc = GST_READ_UINT32_LE (data + 8);
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guint16 width = GST_READ_UINT16_LE (data + 12);
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guint16 height = GST_READ_UINT16_LE (data + 14);
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guint32 rate_num = GST_READ_UINT32_LE (data + 16);
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guint32 rate_den = GST_READ_UINT32_LE (data + 20);
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gst_buffer_map (buffer, &map, GST_MAP_READ);
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if (map.size >= IVF_FILE_HEADER_SIZE) {
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guint32 magic = GST_READ_UINT32_LE (map.data);
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guint16 version = GST_READ_UINT16_LE (map.data + 4);
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guint16 header_size = GST_READ_UINT16_LE (map.data + 6);
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guint32 fourcc = GST_READ_UINT32_LE (map.data + 8);
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guint16 width = GST_READ_UINT16_LE (map.data + 12);
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guint16 height = GST_READ_UINT16_LE (map.data + 14);
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guint32 rate_num = GST_READ_UINT32_LE (map.data + 16);
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guint32 rate_den = GST_READ_UINT32_LE (map.data + 20);
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#ifndef GST_DISABLE_GST_DEBUG
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guint32 num_frames = GST_READ_UINT32_LE (data + 24);
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guint32 num_frames = GST_READ_UINT32_LE (map.data + 24);
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#endif
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/* last 4 bytes unused */
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gst_adapter_flush (ivf->adapter, 32);
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if (magic != GST_MAKE_FOURCC ('D', 'K', 'I', 'F') ||
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version != 0 || header_size != 32 ||
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fourcc != GST_MAKE_FOURCC ('V', 'P', '8', '0')) {
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GST_ELEMENT_ERROR (ivf, STREAM, WRONG_TYPE, (NULL), (NULL));
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return GST_FLOW_ERROR;
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ret = GST_FLOW_ERROR;
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goto end;
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}
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/* create src pad caps */
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@ -209,81 +208,120 @@ gst_ivf_parse_chain (GstPad * pad, GstBuffer * buf)
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GST_LOG_OBJECT (ivf, "Stream has %d frames", num_frames);
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gst_pad_set_caps (ivf->srcpad, caps);
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gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (ivf), caps);
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gst_caps_unref (caps);
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/* keep framerate in instance for convenience */
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ivf->rate_num = rate_num;
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ivf->rate_den = rate_den;
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gst_pad_push_event (ivf->srcpad, gst_event_new_new_segment (FALSE, 1.0,
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GST_FORMAT_TIME, 0, -1, 0));
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/* move along */
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ivf->state = GST_IVF_PARSE_DATA;
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gst_base_parse_set_min_frame_size (GST_BASE_PARSE_CAST (ivf),
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IVF_FRAME_HEADER_SIZE);
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*skipsize = IVF_FILE_HEADER_SIZE;
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} else {
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GST_LOG_OBJECT (ivf, "Header data not yet available.");
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break;
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*skipsize = 0;
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}
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/* fall through */
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end:
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gst_buffer_unmap (buffer, &map);
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return ret;
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}
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case GST_IVF_PARSE_DATA:
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while (gst_adapter_available (ivf->adapter) > 12) {
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const guint8 *data = gst_adapter_peek (ivf->adapter, 12);
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guint32 frame_size = GST_READ_UINT32_LE (data);
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guint64 frame_pts = GST_READ_UINT64_LE (data + 4);
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static GstFlowReturn
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gst_ivf_parse_handle_frame_data (GstIvfParse * ivf, GstBaseParseFrame * frame,
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gint * skipsize)
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{
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GstBuffer *const buffer = frame->buffer;
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GstMapInfo map;
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GstFlowReturn ret = GST_FLOW_OK;
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GstBuffer *out_buffer;
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gst_buffer_map (buffer, &map, GST_MAP_READ);
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if (map.size >= IVF_FILE_HEADER_SIZE) {
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guint32 frame_size = GST_READ_UINT32_LE (map.data);
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guint64 frame_pts = GST_READ_UINT64_LE (map.data + 4);
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GST_LOG_OBJECT (ivf,
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"Read frame header: size %u, pts %" G_GUINT64_FORMAT, frame_size,
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frame_pts);
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if (gst_adapter_available (ivf->adapter) >= 12 + frame_size) {
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GstBuffer *frame;
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if (map.size < IVF_FRAME_HEADER_SIZE + frame_size) {
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gst_base_parse_set_min_frame_size (GST_BASE_PARSE_CAST (ivf),
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IVF_FRAME_HEADER_SIZE + frame_size);
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gst_buffer_unmap (buffer, &map);
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*skipsize = 0;
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goto end;
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}
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gst_adapter_flush (ivf->adapter, 12);
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gst_buffer_unmap (buffer, &map);
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frame = gst_adapter_take_buffer (ivf->adapter, frame_size);
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gst_buffer_set_caps (frame, GST_PAD_CAPS (ivf->srcpad));
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GST_BUFFER_TIMESTAMP (frame) =
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/* Eventually, we would need the buffer memory in a merged state anyway */
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out_buffer = gst_buffer_copy_region (buffer, GST_BUFFER_COPY_FLAGS |
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GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_META |
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GST_BUFFER_COPY_MEMORY | GST_BUFFER_COPY_MERGE,
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IVF_FRAME_HEADER_SIZE, frame_size);
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if (!out_buffer) {
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GST_ERROR_OBJECT (ivf, "Failed to copy frame buffer");
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ret = GST_FLOW_ERROR;
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*skipsize = IVF_FRAME_HEADER_SIZE + frame_size;
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goto end;
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}
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gst_buffer_replace (&frame->out_buffer, out_buffer);
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gst_buffer_unref (out_buffer);
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GST_BUFFER_TIMESTAMP (out_buffer) =
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gst_util_uint64_scale_int (GST_SECOND * frame_pts, ivf->rate_den,
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ivf->rate_num);
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GST_BUFFER_DURATION (frame) =
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gst_util_uint64_scale_int (GST_SECOND, ivf->rate_den,
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ivf->rate_num);
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GST_BUFFER_DURATION (out_buffer) =
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gst_util_uint64_scale_int (GST_SECOND, ivf->rate_den, ivf->rate_num);
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GST_DEBUG_OBJECT (ivf, "Pushing frame of size %u, ts %"
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GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %"
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G_GUINT64_FORMAT ", off_end %" G_GUINT64_FORMAT,
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GST_BUFFER_SIZE (frame),
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (frame)),
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GST_TIME_ARGS (GST_BUFFER_DURATION (frame)),
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GST_BUFFER_OFFSET (frame), GST_BUFFER_OFFSET_END (frame));
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frame_size,
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (out_buffer)),
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GST_TIME_ARGS (GST_BUFFER_DURATION (out_buffer)),
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GST_BUFFER_OFFSET (out_buffer), GST_BUFFER_OFFSET_END (out_buffer));
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res = gst_pad_push (ivf->srcpad, frame);
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if (res != GST_FLOW_OK)
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break;
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ret = gst_base_parse_finish_frame (GST_BASE_PARSE_CAST (ivf), frame,
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IVF_FRAME_HEADER_SIZE + frame_size);
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*skipsize = 0;
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} else {
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GST_LOG_OBJECT (ivf, "Frame data not yet available.");
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break;
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gst_buffer_unmap (buffer, &map);
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*skipsize = 0;
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}
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}
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break;
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end:
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return ret;
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}
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static GstFlowReturn
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gst_ivf_parse_handle_frame (GstBaseParse * parse,
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GstBaseParseFrame * frame, gint * skipsize)
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{
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GstIvfParse *const ivf = GST_IVF_PARSE (parse);
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switch (ivf->state) {
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case GST_IVF_PARSE_START:
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return gst_ivf_parse_handle_frame_start (ivf, frame, skipsize);
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case GST_IVF_PARSE_DATA:
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return gst_ivf_parse_handle_frame_data (ivf, frame, skipsize);
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default:
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g_return_val_if_reached (GST_FLOW_ERROR);
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break;
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}
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return res;
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g_assert_not_reached ();
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return GST_FLOW_ERROR;
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}
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/* entry point to initialize the plug-in */
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static gboolean
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ivfparse_init (GstPlugin * ivfparse)
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{
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/* debug category for filtering log messages */
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GST_DEBUG_CATEGORY_INIT (gst_ivf_parse_debug, "ivfparse", 0, "IVF parser");
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/* register parser element */
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if (!gst_element_register (ivfparse, "ivfparse", GST_RANK_PRIMARY,
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GST_TYPE_IVF_PARSE))
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@ -23,7 +23,7 @@
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#define __GST_IVF_PARSE_H__
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#include <gst/gst.h>
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#include <gst/base/gstadapter.h>
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#include <gst/base/gstbaseparse.h>
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G_BEGIN_DECLS
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@ -48,11 +48,7 @@ typedef struct _GstIvfParseClass GstIvfParseClass;
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struct _GstIvfParse
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{
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GstElement element;
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GstPad *sinkpad, *srcpad;
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GstAdapter *adapter;
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GstBaseParse baseparse;
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GstIvfParseState state;
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@ -63,7 +59,7 @@ struct _GstIvfParse
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struct _GstIvfParseClass
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{
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GstElementClass parent_class;
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GstBaseParseClass parent_class;
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};
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GType gst_ivf_parse_get_type (void);
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