lavc: add an Intel libmfx-based H.264 decoder

Based on the code by Luca Barbato <lu_zero@gentoo.org> and Yukinori
Yamazoe <drocon11@gmail.com>.

1 files changed, 86 insertions, 0 deletions

diff --git a/libavcodec/qsv_internal.h b/libavcodec/qsv_internal.h
new file mode 100644
index 0000000000..8ab149a797
--- /dev/null
+++ b/libavcodec/qsv_internal.h
@@ -0,0 +1,86 @@
+/*
+ * Intel MediaSDK QSV utility functions
+ *
+ * copyright (c) 2013 Luca Barbato
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_QSV_INTERNAL_H
+#define AVCODEC_QSV_INTERNAL_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <mfx/mfxvideo.h>
+
+#include "libavutil/frame.h"
+#include "libavutil/pixfmt.h"
+
+#include "avcodec.h"
+
+#define QSV_VERSION_MAJOR 1
+#define QSV_VERSION_MINOR 1
+
+#define ASYNC_DEPTH_DEFAULT 4       // internal parallelism
+
+typedef struct QSVFrame {
+    AVFrame *frame;
+    mfxFrameSurface1 *surface;
+
+    mfxFrameSurface1 surface_internal;
+
+    struct QSVFrame *next;
+} QSVFrame;
+
+typedef struct QSVContext {
+    // the session used for decoding
+    mfxSession session;
+
+    // the session we allocated internally, in case the caller did not provide
+    // one
+    mfxSession internal_session;
+
+    /**
+     * a linked list of frames currently being used by QSV
+     */
+    QSVFrame *work_frames;
+
+    // options set by the caller
+    int async_depth;
+    int iopattern;
+
+    mfxExtBuffer **ext_buffers;
+    int         nb_ext_buffers;
+} QSVContext;
+
+/**
+ * Convert a libmfx error code into a libav error code.
+ */
+int ff_qsv_error(int mfx_err);
+
+int ff_qsv_map_pixfmt(enum AVPixelFormat format);
+
+int ff_qsv_init(AVCodecContext *s, QSVContext *q, mfxSession session);
+
+int ff_qsv_decode(AVCodecContext *s, QSVContext *q,
+                  AVFrame *frame, int *got_frame,
+                  AVPacket *avpkt);
+
+int ff_qsv_close(QSVContext *q);
+
+#endif /* AVCODEC_QSV_INTERNAL_H */