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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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2e349576eb
Also rename the relevant API so we mirror the public API more closely, and switch to CoreFoundation CFTypeRef style typedefs. We still support the old private CoreMedia in order to not break OS X support. This means that vtenc and vtdec are now compatible with iOS 4.x, and in theory also future versions of OS X, where this API may turn public like it has on iOS.
124 lines
3.8 KiB
C
124 lines
3.8 KiB
C
/*
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* Copyright (C) 2009 Ole André Vadla Ravnås <oravnas@cisco.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "coremediabuffer.h"
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G_DEFINE_TYPE (GstCoreMediaBuffer, gst_core_media_buffer, GST_TYPE_BUFFER);
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static void
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gst_core_media_buffer_init (GstCoreMediaBuffer * self)
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{
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GST_BUFFER_FLAG_SET (self, GST_BUFFER_FLAG_READONLY);
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}
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static void
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gst_core_media_buffer_finalize (GstMiniObject * mini_object)
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{
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GstCoreMediaBuffer *self = GST_CORE_MEDIA_BUFFER_CAST (mini_object);
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if (self->image_buf != NULL) {
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GstCVApi *cv = self->ctx->cv;
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cv->CVPixelBufferUnlockBaseAddress (self->image_buf, 0);
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}
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self->ctx->cm->FigSampleBufferRelease (self->sample_buf);
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g_object_unref (self->ctx);
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GST_MINI_OBJECT_CLASS (gst_core_media_buffer_parent_class)->finalize
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(mini_object);
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}
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GstBuffer *
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gst_core_media_buffer_new (GstCoreMediaCtx * ctx, CMSampleBufferRef sample_buf)
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{
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GstCVApi *cv = ctx->cv;
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GstCMApi *cm = ctx->cm;
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CVImageBufferRef image_buf;
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CVPixelBufferRef pixel_buf;
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CMBlockBufferRef block_buf;
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Byte *data = NULL;
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UInt32 size;
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OSStatus status;
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GstCoreMediaBuffer *buf;
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image_buf = cm->CMSampleBufferGetImageBuffer (sample_buf);
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pixel_buf = NULL;
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block_buf = cm->CMSampleBufferGetDataBuffer (sample_buf);
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if (image_buf != NULL &&
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CFGetTypeID (image_buf) == cv->CVPixelBufferGetTypeID ()) {
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pixel_buf = (CVPixelBufferRef) image_buf;
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if (cv->CVPixelBufferLockBaseAddress (pixel_buf, 0) != kCVReturnSuccess)
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goto error;
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if (cv->CVPixelBufferIsPlanar (pixel_buf)) {
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gint plane_count, plane_idx;
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data = cv->CVPixelBufferGetBaseAddressOfPlane (pixel_buf, 0);
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size = 0;
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plane_count = cv->CVPixelBufferGetPlaneCount (pixel_buf);
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for (plane_idx = 0; plane_idx != plane_count; plane_idx++) {
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size += cv->CVPixelBufferGetBytesPerRowOfPlane (pixel_buf, plane_idx) *
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cv->CVPixelBufferGetHeightOfPlane (pixel_buf, plane_idx);
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}
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} else {
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data = cv->CVPixelBufferGetBaseAddress (pixel_buf);
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size = cv->CVPixelBufferGetBytesPerRow (pixel_buf) *
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cv->CVPixelBufferGetHeight (pixel_buf);
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}
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} else if (block_buf != NULL) {
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status = cm->CMBlockBufferGetDataPointer (block_buf, 0, 0, 0, &data);
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if (status != noErr)
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goto error;
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size = cm->CMBlockBufferGetDataLength (block_buf);
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} else {
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goto error;
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}
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buf =
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GST_CORE_MEDIA_BUFFER (gst_mini_object_new (GST_TYPE_CORE_MEDIA_BUFFER));
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buf->ctx = g_object_ref (ctx);
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buf->sample_buf = cm->FigSampleBufferRetain (sample_buf);
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buf->image_buf = image_buf;
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buf->pixel_buf = pixel_buf;
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buf->block_buf = block_buf;
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GST_BUFFER_DATA (buf) = data;
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GST_BUFFER_SIZE (buf) = size;
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return GST_BUFFER_CAST (buf);
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error:
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return NULL;
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}
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CVPixelBufferRef
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gst_core_media_buffer_get_pixel_buffer (GstCoreMediaBuffer * buf)
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{
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return buf->ctx->cv->CVPixelBufferRetain (buf->pixel_buf);
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}
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static void
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gst_core_media_buffer_class_init (GstCoreMediaBufferClass * klass)
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{
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GstMiniObjectClass *miniobject_class = GST_MINI_OBJECT_CLASS (klass);
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miniobject_class->finalize = gst_core_media_buffer_finalize;
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}
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