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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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applemedia: port vtdec
This commit is contained in:
Alessandro Decina
parent
b45250e9d2
commit
8546458617
7 changed files with 164 additions and 87 deletions
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@ -78,6 +78,7 @@ else
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libgstapplemedia_la_SOURCES += \
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qtkitvideosrc.m \
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vtdec.c \
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mioapi.c
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libgstapplemedia_la_LDFLAGS += \
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@ -50,7 +50,7 @@
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- (GstBuffer *)createGstBufferForCoreVideoBuffer:(CFTypeRef)cvbuf
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{
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return gst_core_video_buffer_new (coreMediaCtx, (CVBufferRef) cvbuf);
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return gst_core_video_buffer_new (coreMediaCtx, (CVBufferRef) cvbuf, NULL);
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}
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- (GstBuffer *)createGstBufferForSampleBuffer:(CFTypeRef)sbuf
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@ -49,7 +49,8 @@ gst_core_video_meta_get_info (void)
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}
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GstBuffer *
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gst_core_video_buffer_new (GstCoreMediaCtx * ctx, CVBufferRef cvbuf)
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gst_core_video_buffer_new (GstCoreMediaCtx * ctx, CVBufferRef cvbuf,
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GstVideoInfo * vinfo)
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{
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GstCVApi *cv = ctx->cv;
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void *data;
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@ -57,32 +58,65 @@ gst_core_video_buffer_new (GstCoreMediaCtx * ctx, CVBufferRef cvbuf)
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CVPixelBufferRef pixbuf = NULL;
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GstBuffer *buf;
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GstCoreVideoMeta *meta;
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guint width, height, n_planes, i;
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gsize offset[GST_VIDEO_MAX_PLANES];
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gint stride[GST_VIDEO_MAX_PLANES];
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if (CFGetTypeID (cvbuf) == cv->CVPixelBufferGetTypeID ()) {
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pixbuf = (CVPixelBufferRef) cvbuf;
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if (cv->CVPixelBufferLockBaseAddress (pixbuf,
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kCVPixelBufferLock_ReadOnly) != kCVReturnSuccess) {
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goto error;
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}
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data = cv->CVPixelBufferGetBaseAddress (pixbuf);
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size = cv->CVPixelBufferGetBytesPerRow (pixbuf) *
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cv->CVPixelBufferGetHeight (pixbuf);
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} else {
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if (CFGetTypeID (cvbuf) != cv->CVPixelBufferGetTypeID ())
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/* TODO: Do we need to handle other buffer types? */
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goto error;
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pixbuf = (CVPixelBufferRef) cvbuf;
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if (cv->CVPixelBufferLockBaseAddress (pixbuf,
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kCVPixelBufferLock_ReadOnly) != kCVReturnSuccess) {
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goto error;
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}
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buf = gst_buffer_new ();
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/* add the corevideo meta to free the underlying corevideo buffer */
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meta = (GstCoreVideoMeta *) gst_buffer_add_meta (buf,
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gst_core_video_meta_get_info (), NULL);
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meta->ctx = g_object_ref (ctx);
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meta->cvbuf = cv->CVBufferRetain (cvbuf);
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meta->pixbuf = pixbuf;
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/* set stride, offset and size */
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memset (&offset, 0, sizeof (offset));
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memset (&stride, 0, sizeof (stride));
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data = cv->CVPixelBufferGetBaseAddress (pixbuf);
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height = cv->CVPixelBufferGetHeight (pixbuf);
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if (cv->CVPixelBufferIsPlanar (pixbuf)) {
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GstVideoInfo tmp_vinfo;
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n_planes = cv->CVPixelBufferGetPlaneCount (pixbuf);
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for (i = 0; i < n_planes; ++i)
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stride[i] = cv->CVPixelBufferGetBytesPerRowOfPlane (pixbuf, i);
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/* FIXME: don't hardcode NV12 */
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gst_video_info_set_format (&tmp_vinfo,
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GST_VIDEO_FORMAT_NV12, stride[0], height);
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offset[1] = tmp_vinfo.offset[1];
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size = tmp_vinfo.size;
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} else {
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n_planes = 1;
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size = cv->CVPixelBufferGetBytesPerRow (pixbuf) * height;
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}
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gst_buffer_take_memory (buf, -1,
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gst_memory_new_wrapped (GST_MEMORY_FLAG_NO_SHARE, data,
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size, 0, size, NULL, NULL));
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if (vinfo) {
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GstVideoMeta *video_meta;
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width = vinfo->width;
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video_meta = gst_buffer_add_video_meta_full (buf, GST_VIDEO_FLAG_NONE,
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GST_VIDEO_FORMAT_NV12, width, height, n_planes, offset, stride);
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}
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return buf;
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error:
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@ -21,6 +21,8 @@
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#define __GST_CORE_VIDEO_BUFFER_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/video/gstvideometa.h>
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#include "coremediactx.h"
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@ -36,7 +38,8 @@ typedef struct _GstCoreVideoMeta
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} GstCoreVideoMeta;
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GstBuffer * gst_core_video_buffer_new (GstCoreMediaCtx * ctx,
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CVBufferRef cvbuf);
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CVBufferRef cvbuf,
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GstVideoInfo *info);
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G_END_DECLS
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@ -73,8 +73,8 @@ plugin_init (GstPlugin * plugin)
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GST_TYPE_VT_H264_ENC_BIN);
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gst_vtenc_register_elements (plugin);
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gst_vtdec_register_elements (plugin);
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#endif
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gst_vtdec_register_elements (plugin);
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return res;
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}
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@ -32,8 +32,9 @@ static GstElementClass *parent_class = NULL;
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static GstStateChangeReturn gst_vtdec_change_state (GstElement * element,
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GstStateChange transition);
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static gboolean gst_vtdec_sink_setcaps (GstPad * pad, GstCaps * caps);
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static GstFlowReturn gst_vtdec_chain (GstPad * pad, GstBuffer * buf);
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static gboolean gst_vtdec_sink_setcaps (GstVTDec * dec, GstCaps * caps);
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static GstFlowReturn gst_vtdec_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buf);
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static CMFormatDescriptionRef gst_vtdec_create_format_description
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(GstVTDec * self);
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@ -47,6 +48,8 @@ static void gst_vtdec_destroy_session (GstVTDec * self,
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static GstFlowReturn gst_vtdec_decode_buffer (GstVTDec * self, GstBuffer * buf);
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static void gst_vtdec_enqueue_frame (void *data, gsize unk1, VTStatus result,
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gsize unk2, CVBufferRef cvbuf);
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static gboolean gst_vtdec_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static CMSampleBufferRef gst_vtdec_sample_buffer_from (GstVTDec * self,
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GstBuffer * buf);
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@ -63,19 +66,17 @@ gst_vtdec_base_init (GstVTDecClass * klass)
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const int min_fps_d = 1, max_fps_d = 1;
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GstPadTemplate *sink_template, *src_template;
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GstCaps *sink_caps;
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GstElementDetails details;
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gchar *longname, *description;
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details.longname = g_strdup_printf ("%s decoder", codec_details->name);
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details.klass = g_strdup_printf ("Codec/Decoder/Video");
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details.description = g_strdup_printf ("%s decoder", codec_details->name);
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longname = g_strdup_printf ("%s decoder", codec_details->name);
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description = g_strdup_printf ("%s decoder", codec_details->name);
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gst_element_class_set_details_simple (element_class,
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details.longname, details.klass, details.description,
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gst_element_class_set_metadata (element_class, longname,
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"Codec/Decoder/Video", description,
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"Ole André Vadla Ravnås <oravnas@cisco.com>");
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g_free (details.longname);
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g_free (details.klass);
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g_free (details.description);
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g_free (longname);
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g_free (description);
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sink_caps = gst_caps_new_simple (codec_details->mimetype,
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"width", GST_TYPE_INT_RANGE, min_width, max_width,
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@ -93,8 +94,8 @@ gst_vtdec_base_init (GstVTDecClass * klass)
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src_template = gst_pad_template_new ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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gst_caps_new_simple ("video/x-raw-yuv",
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"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('N', 'V', '1', '2'),
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gst_caps_new_simple ("video/x-raw",
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"format", G_TYPE_STRING, "NV12",
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"width", GST_TYPE_INT_RANGE, min_width, max_width,
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"height", GST_TYPE_INT_RANGE, min_height, max_height,
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"framerate", GST_TYPE_FRACTION_RANGE,
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@ -126,7 +127,7 @@ gst_vtdec_init (GstVTDec * self)
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self->sinkpad = gst_pad_new_from_template
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(gst_element_class_get_pad_template (element_klass, "sink"), "sink");
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gst_element_add_pad (element, self->sinkpad);
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gst_pad_set_setcaps_function (self->sinkpad, gst_vtdec_sink_setcaps);
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gst_pad_set_event_function (self->sinkpad, gst_vtdec_sink_event);
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gst_pad_set_chain_function (self->sinkpad, gst_vtdec_chain);
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self->srcpad = gst_pad_new_from_template
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@ -158,10 +159,7 @@ gst_vtdec_change_state (GstElement * element, GstStateChange transition)
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self->ctx->cm->FigFormatDescriptionRelease (self->fmt_desc);
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self->fmt_desc = NULL;
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self->negotiated_width = self->negotiated_height = 0;
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self->negotiated_fps_n = self->negotiated_fps_d = 0;
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self->caps_width = self->caps_height = 0;
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self->caps_fps_n = self->caps_fps_d = 0;
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gst_video_info_init (&self->vinfo);
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g_ptr_array_free (self->cur_outbufs, TRUE);
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self->cur_outbufs = NULL;
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@ -182,25 +180,69 @@ api_error:
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}
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static gboolean
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gst_vtdec_sink_setcaps (GstPad * pad, GstCaps * caps)
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gst_vtdec_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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GstVTDec *self = GST_VTDEC_CAST (parent);
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gboolean forward = TRUE;
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gboolean res = TRUE;
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_CAPS:
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{
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GstCaps *caps;
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gst_event_parse_caps (event, &caps);
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res = gst_vtdec_sink_setcaps (self, caps);
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}
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default:
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break;
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}
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if (forward)
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res = gst_pad_event_default (pad, parent, event);
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return res;
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}
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static gboolean
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gst_vtdec_sink_setcaps (GstVTDec * self, GstCaps * caps)
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{
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GstVTDec *self = GST_VTDEC_CAST (GST_PAD_PARENT (pad));
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GstStructure *structure;
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CMFormatDescriptionRef fmt_desc = NULL;
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GstVideoFormat format = GST_VIDEO_FORMAT_NV12;
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gint width, height;
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gint fps_n, fps_d;
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gint par_n, par_d;
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structure = gst_caps_get_structure (caps, 0);
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if (!gst_structure_get_int (structure, "width", &self->negotiated_width))
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if (!gst_structure_get_int (structure, "width", &width))
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goto incomplete_caps;
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if (!gst_structure_get_int (structure, "height", &self->negotiated_height))
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if (!gst_structure_get_int (structure, "height", &height))
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goto incomplete_caps;
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gst_structure_get_fraction (structure, "framerate",
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&self->negotiated_fps_n, &self->negotiated_fps_d);
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/* FIXME */
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if (self->negotiated_fps_n == 0)
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self->negotiated_fps_n = 30;
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if (self->negotiated_fps_d == 0)
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self->negotiated_fps_d = 1;
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gst_video_info_set_format (&self->vinfo, format, width, height);
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if (gst_structure_get_fraction (structure, "framerate", &fps_n, &fps_d)) {
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if (fps_n == 0) {
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/* variable framerate */
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self->vinfo.flags |= GST_VIDEO_FLAG_VARIABLE_FPS;
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/* see if we have a max-framerate */
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gst_structure_get_fraction (structure, "max-framerate", &fps_n, &fps_d);
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}
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self->vinfo.fps_n = fps_n;
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self->vinfo.fps_d = fps_d;
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} else {
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/* unspecified is variable framerate */
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self->vinfo.fps_n = 0;
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self->vinfo.fps_d = 1;
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}
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if (gst_structure_get_fraction (structure, "pixel-aspect-ratio",
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&par_n, &par_d)) {
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self->vinfo.par_n = par_n;
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self->vinfo.par_d = par_d;
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} else {
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self->vinfo.par_n = 1;
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self->vinfo.par_d = 1;
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}
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if (self->details->format_id == kVTFormatH264) {
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const GValue *codec_data_value;
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@ -226,12 +268,14 @@ gst_vtdec_sink_setcaps (GstPad * pad, GstCaps * caps)
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goto session_create_error;
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}
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/* renegotiate when upstream caps change */
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gst_pad_mark_reconfigure (self->srcpad);
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return TRUE;
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/* ERRORS */
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incomplete_caps:
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{
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self->negotiated_width = self->negotiated_height = -1;
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return TRUE;
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}
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session_create_error:
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@ -245,7 +289,7 @@ session_create_error:
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static gboolean
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gst_vtdec_is_negotiated (GstVTDec * self)
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{
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return self->negotiated_width != 0;
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return self->vinfo.width != 0;
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}
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static gboolean
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@ -253,42 +297,26 @@ gst_vtdec_negotiate_downstream (GstVTDec * self)
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{
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gboolean result;
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GstCaps *caps;
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GstStructure *s;
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if (self->caps_width == self->negotiated_width &&
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self->caps_height == self->negotiated_height &&
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self->caps_fps_n == self->negotiated_fps_n &&
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self->caps_fps_d == self->negotiated_fps_d) {
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if (!gst_pad_check_reconfigure (self->srcpad))
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return TRUE;
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}
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caps = gst_caps_copy (gst_pad_get_pad_template_caps (self->srcpad));
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s = gst_caps_get_structure (caps, 0);
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gst_structure_set (s,
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"width", G_TYPE_INT, self->negotiated_width,
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"height", G_TYPE_INT, self->negotiated_height,
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"framerate", GST_TYPE_FRACTION,
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self->negotiated_fps_n, self->negotiated_fps_d, NULL);
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caps = gst_video_info_to_caps (&self->vinfo);
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result = gst_pad_set_caps (self->srcpad, caps);
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gst_caps_unref (caps);
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self->caps_width = self->negotiated_width;
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self->caps_height = self->negotiated_height;
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self->caps_fps_n = self->negotiated_fps_n;
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self->caps_fps_d = self->negotiated_fps_d;
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return result;
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}
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static GstFlowReturn
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gst_vtdec_chain (GstPad * pad, GstBuffer * buf)
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gst_vtdec_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
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{
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GstVTDec *self = GST_VTDEC_CAST (GST_PAD_PARENT (pad));
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GstVTDec *self = GST_VTDEC_CAST (parent);
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if (!gst_vtdec_is_negotiated (self))
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goto not_negotiated;
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if (self->session == NULL || self->negotiated_width < 0)
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if (self->session == NULL)
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goto pending_caps;
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return gst_vtdec_decode_buffer (self, buf);
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@ -311,7 +339,7 @@ gst_vtdec_create_format_description (GstVTDec * self)
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OSStatus status;
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status = self->ctx->cm->CMVideoFormatDescriptionCreate (NULL,
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self->details->format_id, self->negotiated_width, self->negotiated_height,
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self->details->format_id, self->vinfo.width, self->vinfo.height,
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NULL, &fmt_desc);
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if (status == noErr)
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return fmt_desc;
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@ -325,13 +353,18 @@ gst_vtdec_create_format_description_from_codec_data (GstVTDec * self,
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{
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CMFormatDescriptionRef fmt_desc;
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OSStatus status;
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GstMapInfo map;
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gst_buffer_map (codec_data, &map, GST_MAP_READ);
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status =
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self->ctx->cm->
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FigVideoFormatDescriptionCreateWithSampleDescriptionExtensionAtom (NULL,
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self->details->format_id, self->negotiated_width, self->negotiated_height,
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'avcC', GST_BUFFER_DATA (codec_data), GST_BUFFER_SIZE (codec_data),
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&fmt_desc);
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self->details->format_id, self->vinfo.width, self->vinfo.height,
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'avcC', map.data, map.size, NULL, &fmt_desc);
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gst_buffer_unmap (codec_data, &map);
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if (status == noErr)
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return fmt_desc;
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else
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@ -352,11 +385,11 @@ gst_vtdec_create_session (GstVTDec * self, CMFormatDescriptionRef fmt_desc)
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gst_vtutil_dict_set_i32 (pb_attrs, *(cv->kCVPixelBufferPixelFormatTypeKey),
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kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange);
|
||||
gst_vtutil_dict_set_i32 (pb_attrs, *(cv->kCVPixelBufferWidthKey),
|
||||
self->negotiated_width);
|
||||
self->vinfo.width);
|
||||
gst_vtutil_dict_set_i32 (pb_attrs, *(cv->kCVPixelBufferHeightKey),
|
||||
self->negotiated_height);
|
||||
self->vinfo.height);
|
||||
gst_vtutil_dict_set_i32 (pb_attrs,
|
||||
*(cv->kCVPixelBufferBytesPerRowAlignmentKey), 2 * self->negotiated_width);
|
||||
*(cv->kCVPixelBufferBytesPerRowAlignmentKey), 2 * self->vinfo.width);
|
||||
|
||||
callback.func = gst_vtdec_enqueue_frame;
|
||||
callback.data = self;
|
||||
|
|
@ -364,7 +397,7 @@ gst_vtdec_create_session (GstVTDec * self, CMFormatDescriptionRef fmt_desc)
|
|||
status = self->ctx->vt->VTDecompressionSessionCreate (NULL, fmt_desc,
|
||||
NULL, pb_attrs, &callback, &session);
|
||||
GST_INFO_OBJECT (self, "VTDecompressionSessionCreate for %d x %d => %d",
|
||||
self->negotiated_width, self->negotiated_height, status);
|
||||
self->vinfo.width, self->vinfo.height, status);
|
||||
|
||||
CFRelease (pb_attrs);
|
||||
|
||||
|
|
@ -416,7 +449,6 @@ gst_vtdec_decode_buffer (GstVTDec * self, GstBuffer * buf)
|
|||
GstBuffer *buf = g_ptr_array_index (self->cur_outbufs, i);
|
||||
|
||||
if (ret == GST_FLOW_OK) {
|
||||
gst_buffer_set_caps (buf, GST_PAD_CAPS (self->srcpad));
|
||||
ret = gst_pad_push (self->srcpad, buf);
|
||||
} else {
|
||||
gst_buffer_unref (buf);
|
||||
|
|
@ -437,9 +469,8 @@ gst_vtdec_enqueue_frame (void *data, gsize unk1, VTStatus result, gsize unk2,
|
|||
if (result != kVTSuccess)
|
||||
goto beach;
|
||||
|
||||
buf = gst_core_video_buffer_new (self->ctx, cvbuf);
|
||||
gst_buffer_copy_metadata (buf, self->cur_inbuf,
|
||||
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS);
|
||||
buf = gst_core_video_buffer_new (self->ctx, cvbuf, &self->vinfo);
|
||||
gst_buffer_copy_into (buf, self->cur_inbuf, GST_BUFFER_COPY_METADATA, 0, -1);
|
||||
|
||||
g_ptr_array_add (self->cur_outbufs, buf);
|
||||
|
||||
|
|
@ -454,23 +485,33 @@ gst_vtdec_sample_buffer_from (GstVTDec * self, GstBuffer * buf)
|
|||
OSStatus status;
|
||||
CMBlockBufferRef bbuf = NULL;
|
||||
CMSampleBufferRef sbuf = NULL;
|
||||
GstMapInfo map;
|
||||
|
||||
g_assert (self->fmt_desc != NULL);
|
||||
|
||||
gst_buffer_map (buf, &map, GST_MAP_READ);
|
||||
|
||||
status = cm->CMBlockBufferCreateWithMemoryBlock (NULL,
|
||||
GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), kCFAllocatorNull, NULL,
|
||||
0, GST_BUFFER_SIZE (buf), FALSE, &bbuf);
|
||||
map.data, (gint64) map.size, kCFAllocatorNull, NULL, 0, (gint64) map.size,
|
||||
FALSE, &bbuf);
|
||||
|
||||
gst_buffer_unmap (buf, &map);
|
||||
|
||||
if (status != noErr)
|
||||
goto beach;
|
||||
goto error;
|
||||
|
||||
status = cm->CMSampleBufferCreate (NULL, bbuf, TRUE, 0, 0, self->fmt_desc,
|
||||
1, 0, NULL, 0, NULL, &sbuf);
|
||||
if (status != noErr)
|
||||
goto beach;
|
||||
goto error;
|
||||
|
||||
beach:
|
||||
cm->FigBlockBufferRelease (bbuf);
|
||||
return sbuf;
|
||||
|
||||
error:
|
||||
GST_ERROR_OBJECT (self, "err %d", status);
|
||||
goto beach;
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
|
|||
|
|
@ -21,6 +21,7 @@
|
|||
#define __GST_VTDEC_H__
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include <gst/video/video.h>
|
||||
|
||||
#include "coremediactx.h"
|
||||
|
||||
|
|
@ -62,10 +63,7 @@ struct _GstVTDec
|
|||
|
||||
GstCoreMediaCtx * ctx;
|
||||
|
||||
gint negotiated_width, negotiated_height;
|
||||
gint negotiated_fps_n, negotiated_fps_d;
|
||||
gint caps_width, caps_height;
|
||||
gint caps_fps_n, caps_fps_d;
|
||||
GstVideoInfo vinfo;
|
||||
CMFormatDescriptionRef fmt_desc;
|
||||
VTDecompressionSessionRef session;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue