qsvdec: split off some code that will be shared with the encoder

configure

@@ -1597,6 +1597,7 @@ CONFIG_EXTRA="
     nettle
     pixblockdsp
     qpeldsp
+    qsv
     qsvdec
     rangecoder
     riffdec
@@ -1760,6 +1761,7 @@ mpegaudio_select="mpegaudiodsp"
 mpegaudiodsp_select="dct"
 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
+qsvdec_select="qsv"
 
 # decoders / encoders
 aac_decoder_select="imdct15 mdct sinewin"

libavcodec/Makefile

@@ -80,6 +80,7 @@ OBJS-$(CONFIG_MPEGVIDEOENC)            += mpegvideo_enc.o mpeg12data.o  \
                                           mpegvideoencdsp.o
 OBJS-$(CONFIG_PIXBLOCKDSP)             += pixblockdsp.o
 OBJS-$(CONFIG_QPELDSP)                 += qpeldsp.o
+OBJS-$(CONFIG_QSV)                     += qsv.o
 OBJS-$(CONFIG_QSVDEC)                  += qsvdec.o
 OBJS-$(CONFIG_RANGECODER)              += rangecoder.o
 RDFT-OBJS-$(CONFIG_HARDCODED_TABLES)   += sin_tables.o
@@ -719,7 +720,7 @@ SKIPHEADERS                            += %_tablegen.h                  \
 SKIPHEADERS-$(CONFIG_DXVA2)            += dxva2.h dxva2_internal.h
 SKIPHEADERS-$(CONFIG_LIBSCHROEDINGER)  += libschroedinger.h
 SKIPHEADERS-$(CONFIG_MPEG_XVMC_DECODER) += xvmc.h
-SKIPHEADERS-$(CONFIG_QSVDEC)           += qsv.h qsvdec.h
+SKIPHEADERS-$(CONFIG_QSVDEC)           += qsv.h qsvdec.h qsv_internal.h
 SKIPHEADERS-$(CONFIG_VAAPI)            += vaapi_internal.h
 SKIPHEADERS-$(CONFIG_VDA)              += vda.h vda_internal.h
 SKIPHEADERS-$(CONFIG_VDPAU)            += vdpau.h vdpau_internal.h

libavcodec/qsv.c

@@ -0,0 +1,115 @@
+/*
+ * Intel MediaSDK QSV encoder/decoder shared code
+ *
+ * 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
+ */
+
+#include <mfx/mfxvideo.h>
+
+#include "libavutil/error.h"
+
+#include "avcodec.h"
+#include "qsv_internal.h"
+
+int ff_qsv_codec_id_to_mfx(enum AVCodecID codec_id)
+{
+    switch (codec_id) {
+    case AV_CODEC_ID_H264:
+        return MFX_CODEC_AVC;
+    case AV_CODEC_ID_MPEG1VIDEO:
+    case AV_CODEC_ID_MPEG2VIDEO:
+        return MFX_CODEC_MPEG2;
+    case AV_CODEC_ID_VC1:
+        return MFX_CODEC_VC1;
+    default:
+        break;
+    }
+
+    return AVERROR(ENOSYS);
+}
+
+int ff_qsv_error(int mfx_err)
+{
+    switch (mfx_err) {
+    case MFX_ERR_NONE:
+        return 0;
+    case MFX_ERR_MEMORY_ALLOC:
+    case MFX_ERR_NOT_ENOUGH_BUFFER:
+        return AVERROR(ENOMEM);
+    case MFX_ERR_INVALID_HANDLE:
+        return AVERROR(EINVAL);
+    case MFX_ERR_DEVICE_FAILED:
+    case MFX_ERR_DEVICE_LOST:
+    case MFX_ERR_LOCK_MEMORY:
+        return AVERROR(EIO);
+    case MFX_ERR_NULL_PTR:
+    case MFX_ERR_UNDEFINED_BEHAVIOR:
+    case MFX_ERR_NOT_INITIALIZED:
+        return AVERROR_BUG;
+    case MFX_ERR_UNSUPPORTED:
+    case MFX_ERR_NOT_FOUND:
+        return AVERROR(ENOSYS);
+    case MFX_ERR_MORE_DATA:
+    case MFX_ERR_MORE_SURFACE:
+    case MFX_ERR_MORE_BITSTREAM:
+        return AVERROR(EAGAIN);
+    case MFX_ERR_INCOMPATIBLE_VIDEO_PARAM:
+    case MFX_ERR_INVALID_VIDEO_PARAM:
+        return AVERROR(EINVAL);
+    case MFX_ERR_ABORTED:
+    case MFX_ERR_UNKNOWN:
+    default:
+        return AVERROR_UNKNOWN;
+    }
+}
+
+int ff_qsv_init_internal_session(AVCodecContext *avctx, mfxSession *session)
+{
+    mfxIMPL impl   = MFX_IMPL_AUTO_ANY;
+    mfxVersion ver = { { QSV_VERSION_MINOR, QSV_VERSION_MAJOR } };
+
+    const char *desc;
+    int ret;
+
+    ret = MFXInit(impl, &ver, session);
+    if (ret < 0) {
+        av_log(avctx, AV_LOG_ERROR, "Error initializing an internal MFX session\n");
+        return ff_qsv_error(ret);
+    }
+
+    MFXQueryIMPL(*session, &impl);
+
+    switch (MFX_IMPL_BASETYPE(impl)) {
+    case MFX_IMPL_SOFTWARE:
+        desc = "software";
+        break;
+    case MFX_IMPL_HARDWARE:
+    case MFX_IMPL_HARDWARE2:
+    case MFX_IMPL_HARDWARE3:
+    case MFX_IMPL_HARDWARE4:
+        desc = "hardware accelerated";
+        break;
+    default:
+        desc = "unknown";
+    }
+
+    av_log(avctx, AV_LOG_VERBOSE,
+           "Initialized an internal MFX session using %s implementation\n",
+           desc);
+
+    return 0;
+}

libavcodec/qsv_internal.h

@@ -0,0 +1,38 @@
+/*
+ * Intel MediaSDK QSV encoder/decoder shared code
+ *
+ * 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
+
+#define QSV_VERSION_MAJOR 1
+#define QSV_VERSION_MINOR 1
+
+#define ASYNC_DEPTH_DEFAULT 4       // internal parallelism
+
+/**
+ * Convert a libmfx error code into a libav error code.
+ */
+int ff_qsv_error(int mfx_err);
+
+int ff_qsv_codec_id_to_mfx(enum AVCodecID codec_id);
+
+int ff_qsv_init_internal_session(AVCodecContext *avctx, mfxSession *session);
+
+#endif /* AVCODEC_QSV_INTERNAL_H */

libavcodec/qsvdec.c

@@ -34,43 +34,9 @@
 
 #include "avcodec.h"
 #include "internal.h"
+#include "qsv_internal.h"
 #include "qsvdec.h"
 
-int ff_qsv_error(int mfx_err)
-{
-    switch (mfx_err) {
-    case MFX_ERR_NONE:
-        return 0;
-    case MFX_ERR_MEMORY_ALLOC:
-    case MFX_ERR_NOT_ENOUGH_BUFFER:
-        return AVERROR(ENOMEM);
-    case MFX_ERR_INVALID_HANDLE:
-        return AVERROR(EINVAL);
-    case MFX_ERR_DEVICE_FAILED:
-    case MFX_ERR_DEVICE_LOST:
-    case MFX_ERR_LOCK_MEMORY:
-        return AVERROR(EIO);
-    case MFX_ERR_NULL_PTR:
-    case MFX_ERR_UNDEFINED_BEHAVIOR:
-    case MFX_ERR_NOT_INITIALIZED:
-        return AVERROR_BUG;
-    case MFX_ERR_UNSUPPORTED:
-    case MFX_ERR_NOT_FOUND:
-        return AVERROR(ENOSYS);
-    case MFX_ERR_MORE_DATA:
-    case MFX_ERR_MORE_SURFACE:
-    case MFX_ERR_MORE_BITSTREAM:
-        return AVERROR(EAGAIN);
-    case MFX_ERR_INCOMPATIBLE_VIDEO_PARAM:
-    case MFX_ERR_INVALID_VIDEO_PARAM:
-        return AVERROR(EINVAL);
-    case MFX_ERR_ABORTED:
-    case MFX_ERR_UNKNOWN:
-    default:
-        return AVERROR_UNKNOWN;
-    }
-}
-
 int ff_qsv_map_pixfmt(enum AVPixelFormat format)
 {
     switch (format) {
@@ -82,58 +48,13 @@ int ff_qsv_map_pixfmt(enum AVPixelFormat format)
     }
 }
 
-static int codec_id_to_mfx(enum AVCodecID codec_id)
-{
-    switch (codec_id) {
-    case AV_CODEC_ID_H264:
-        return MFX_CODEC_AVC;
-    case AV_CODEC_ID_MPEG1VIDEO:
-    case AV_CODEC_ID_MPEG2VIDEO:
-        return MFX_CODEC_MPEG2;
-    case AV_CODEC_ID_VC1:
-        return MFX_CODEC_VC1;
-    default:
-        break;
-    }
-
-    return AVERROR(ENOSYS);
-}
-
 static int qsv_init_session(AVCodecContext *avctx, QSVContext *q, mfxSession session)
 {
     if (!session) {
         if (!q->internal_session) {
-            mfxIMPL impl   = MFX_IMPL_AUTO_ANY;
-            mfxVersion ver = { { QSV_VERSION_MINOR, QSV_VERSION_MAJOR } };
-
-            const char *desc;
-            int ret;
-
-            ret = MFXInit(impl, &ver, &q->internal_session);
-            if (ret < 0) {
-                av_log(avctx, AV_LOG_ERROR, "Error initializing an internal MFX session\n");
-                return ff_qsv_error(ret);
-            }
-
-            MFXQueryIMPL(q->internal_session, &impl);
-
-            switch (MFX_IMPL_BASETYPE(impl)) {
-            case MFX_IMPL_SOFTWARE:
-                desc = "software";
-                break;
-            case MFX_IMPL_HARDWARE:
-            case MFX_IMPL_HARDWARE2:
-            case MFX_IMPL_HARDWARE3:
-            case MFX_IMPL_HARDWARE4:
-                desc = "hardware accelerated";
-                break;
-            default:
-                desc = "unknown";
-            }
-
-            av_log(avctx, AV_LOG_VERBOSE,
-                   "Initialized an internal MFX session using %s implementation\n",
-                   desc);
+            int ret = ff_qsv_init_internal_session(avctx, &q->internal_session);
+            if (ret < 0)
+                return ret;
         }
 
         q->session = q->internal_session;
@@ -159,7 +80,7 @@ int ff_qsv_init(AVCodecContext *avctx, QSVContext *q, mfxSession session)
     }
 
 
-    ret = codec_id_to_mfx(avctx->codec_id);
+    ret = ff_qsv_codec_id_to_mfx(avctx->codec_id);
     if (ret < 0)
         return ret;
 

libavcodec/qsvdec.h

@@ -33,11 +33,6 @@
 
 #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;
@@ -68,11 +63,6 @@ typedef struct QSVContext {
     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);

libavcodec/qsvdec_h264.c

@@ -33,6 +33,7 @@
 
 #include "avcodec.h"
 #include "internal.h"
+#include "qsv_internal.h"
 #include "qsvdec.h"
 #include "qsv.h"