1 files changed, 244 insertions, 0 deletions
diff --git a/video/out/opengl/gl_hwdec_vda.c b/video/out/opengl/gl_hwdec_vda.c
new file mode 100644
index 0000000000..3fbcda0e79
--- /dev/null
+++ b/video/out/opengl/gl_hwdec_vda.c
@@ -0,0 +1,244 @@
+/*
+ * Copyright (c) 2013 Stefano Pigozzi <stefano.pigozzi@gmail.com>
+ *
+ * This file is part of mpv.
+ *
+ * mpv is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mpv is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+// Note: handles both VDA and VideoToolbox
+
+#include <IOSurface/IOSurface.h>
+#include <CoreVideo/CoreVideo.h>
+#include <OpenGL/OpenGL.h>
+#include <OpenGL/CGLIOSurface.h>
+
+#include "video/mp_image_pool.h"
+#include "gl_hwdec.h"
+
+struct vda_gl_plane_format {
+    GLenum gl_format;
+    GLenum gl_type;
+    GLenum gl_internal_format;
+};
+
+struct vda_format {
+    uint32_t cvpixfmt;
+    int imgfmt;
+    int planes;
+    struct vda_gl_plane_format gl[MP_MAX_PLANES];
+};
+
+struct priv {
+    CVPixelBufferRef pbuf;
+    GLuint gl_planes[MP_MAX_PLANES];
+    struct mp_hwdec_ctx hwctx;
+};
+
+static struct vda_format vda_formats[] = {
+    {
+        .cvpixfmt = kCVPixelFormatType_422YpCbCr8,
+        .imgfmt = IMGFMT_UYVY,
+        .planes = 1,
+        .gl = {
+            { GL_RGB_422_APPLE, GL_UNSIGNED_SHORT_8_8_APPLE, GL_RGB }
+        }
+    }, {
+        .cvpixfmt = kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange,
+        .imgfmt = IMGFMT_NV12,
+        .planes = 2,
+        .gl = {
+            { GL_RED, GL_UNSIGNED_BYTE, GL_RED },
+            { GL_RG,  GL_UNSIGNED_BYTE, GL_RG } ,
+        }
+    }
+};
+
+static struct vda_format *vda_get_gl_format(uint32_t cvpixfmt)
+{
+    for (int i = 0; i < MP_ARRAY_SIZE(vda_formats); i++) {
+        if (vda_formats[i].cvpixfmt == cvpixfmt)
+            return &vda_formats[i];
+    }
+    return NULL;
+}
+
+static struct vda_format *vda_get_gl_format_from_imgfmt(uint32_t imgfmt)
+{
+    for (int i = 0; i < MP_ARRAY_SIZE(vda_formats); i++) {
+        if (vda_formats[i].imgfmt == imgfmt)
+            return &vda_formats[i];
+    }
+    return NULL;
+}
+
+static struct mp_image *download_image(struct mp_hwdec_ctx *ctx,
+                                       struct mp_image *hw_image,
+                                       struct mp_image_pool *swpool)
+{
+    if (hw_image->imgfmt != IMGFMT_VDA && hw_image->imgfmt != IMGFMT_VIDEOTOOLBOX)
+        return NULL;
+
+    CVPixelBufferRef pbuf = (CVPixelBufferRef)hw_image->planes[3];
+    CVPixelBufferLockBaseAddress(pbuf, 0);
+    size_t width  = CVPixelBufferGetWidth(pbuf);
+    size_t height = CVPixelBufferGetHeight(pbuf);
+    uint32_t cvpixfmt = CVPixelBufferGetPixelFormatType(pbuf);
+    struct vda_format *f = vda_get_gl_format(cvpixfmt);
+    if (!f) {
+        CVPixelBufferUnlockBaseAddress(pbuf, 0);
+        return NULL;
+    }
+
+    struct mp_image img = {0};
+    mp_image_setfmt(&img, f->imgfmt);
+    mp_image_set_size(&img, width, height);
+
+    for (int i = 0; i < f->planes; i++) {
+        void *base    = CVPixelBufferGetBaseAddressOfPlane(pbuf, i);
+        size_t stride = CVPixelBufferGetBytesPerRowOfPlane(pbuf, i);
+        img.planes[i] = base;
+        img.stride[i] = stride;
+    }
+
+    mp_image_copy_attributes(&img, hw_image);
+
+    struct mp_image *image = mp_image_pool_new_copy(swpool, &img);
+    CVPixelBufferUnlockBaseAddress(pbuf, 0);
+
+    return image;
+}
+
+static bool check_hwdec(struct gl_hwdec *hw)
+{
+    if (hw->gl->version < 300) {
+        MP_ERR(hw, "need >= OpenGL 3.0 for core rectangle texture support\n");
+        return false;
+    }
+
+    if (!CGLGetCurrentContext()) {
+        MP_ERR(hw, "need cocoa opengl backend to be active");
+        return false;
+    }
+
+    return true;
+}
+
+static int create_common(struct gl_hwdec *hw, struct vda_format *format)
+{
+    struct priv *p = talloc_zero(hw, struct priv);
+
+    hw->priv = p;
+    hw->gl_texture_target = GL_TEXTURE_RECTANGLE;
+
+    hw->converted_imgfmt = format->imgfmt;
+
+    if (!check_hwdec(hw))
+        return -1;
+
+    hw->hwctx = &p->hwctx;
+    hw->hwctx->download_image = download_image;
+
+    GL *gl = hw->gl;
+    gl->GenTextures(MP_MAX_PLANES, p->gl_planes);
+
+    return 0;
+}
+
+static int create(struct gl_hwdec *hw)
+{
+    // For videotoolbox, we always request NV12.
+#if HAVE_VDA_DEFAULT_INIT2
+    struct vda_format *f = vda_get_gl_format_from_imgfmt(IMGFMT_NV12);
+#else
+    struct vda_format *f = vda_get_gl_format_from_imgfmt(IMGFMT_UYVY);
+#endif
+    if (create_common(hw, f))
+        return -1;
+
+    hw->hwctx->type = HWDEC_VIDEOTOOLBOX;
+
+    return 0;
+}
+
+static int reinit(struct gl_hwdec *hw, struct mp_image_params *params)
+{
+    params->imgfmt = hw->driver->imgfmt;
+    return 0;
+}
+
+static int map_image(struct gl_hwdec *hw, struct mp_image *hw_image,
+                     GLuint *out_textures)
+{
+    if (!check_hwdec(hw))
+        return -1;
+
+    struct priv *p = hw->priv;
+    GL *gl = hw->gl;
+
+    CVPixelBufferRelease(p->pbuf);
+    p->pbuf = (CVPixelBufferRef)hw_image->planes[3];
+    CVPixelBufferRetain(p->pbuf);
+    IOSurfaceRef surface = CVPixelBufferGetIOSurface(p->pbuf);
+
+    uint32_t cvpixfmt = CVPixelBufferGetPixelFormatType(p->pbuf);
+    struct vda_format *f = vda_get_gl_format(cvpixfmt);
+    if (!f) {
+        MP_ERR(hw, "CVPixelBuffer has unsupported format type\n");
+        return -1;
+    }
+
+    const bool planar = CVPixelBufferIsPlanar(p->pbuf);
+    const int planes  = CVPixelBufferGetPlaneCount(p->pbuf);
+    assert(planar && planes == f->planes || f->planes == 1);
+
+    for (int i = 0; i < f->planes; i++) {
+        gl->BindTexture(hw->gl_texture_target, p->gl_planes[i]);
+
+        CGLError err = CGLTexImageIOSurface2D(
+            CGLGetCurrentContext(), hw->gl_texture_target,
+            f->gl[i].gl_internal_format,
+            IOSurfaceGetWidthOfPlane(surface, i),
+            IOSurfaceGetHeightOfPlane(surface, i),
+            f->gl[i].gl_format, f->gl[i].gl_type, surface, i);
+
+        if (err != kCGLNoError)
+            MP_ERR(hw, "error creating IOSurface texture for plane %d: %s (%x)\n",
+                   i, CGLErrorString(err), gl->GetError());
+
+        gl->BindTexture(hw->gl_texture_target, 0);
+
+        out_textures[i] = p->gl_planes[i];
+    }
+
+    return 0;
+}
+
+static void destroy(struct gl_hwdec *hw)
+{
+    struct priv *p = hw->priv;
+    GL *gl = hw->gl;
+
+    CVPixelBufferRelease(p->pbuf);
+    gl->DeleteTextures(MP_MAX_PLANES, p->gl_planes);
+}
+
+const struct gl_hwdec_driver gl_hwdec_videotoolbox = {
+    .api_name = "videotoolbox",
+    .imgfmt = IMGFMT_VIDEOTOOLBOX,
+    .create = create,
+    .reinit = reinit,
+    .map_image = map_image,
+    .destroy = destroy,
+};