ffmpeg-2.8.5

git-svn-id: svn://kolibrios.org@6147 a494cfbc-eb01-0410-851d-a64ba20cac60

contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavcodec/qsvdec_h2645.c

@@ -0,0 +1,222 @@
+/*
+ * Intel MediaSDK QSV based H.264 / HEVC decoder
+ *
+ * copyright (c) 2013 Luca Barbato
+ * copyright (c) 2015 Anton Khirnov
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+#include <stdint.h>
+#include <string.h>
+
+#include <mfx/mfxvideo.h>
+
+#include "libavutil/common.h"
+#include "libavutil/fifo.h"
+#include "libavutil/opt.h"
+
+#include "avcodec.h"
+#include "internal.h"
+#include "qsvdec.h"
+
+enum LoadPlugin {
+    LOAD_PLUGIN_NONE,
+    LOAD_PLUGIN_HEVC_SW,
+};
+
+typedef struct QSVH2645Context {
+    AVClass *class;
+    QSVContext qsv;
+
+    int load_plugin;
+
+    // the filter for converting to Annex B
+    AVBitStreamFilterContext *bsf;
+
+} QSVH2645Context;
+
+static av_cold int qsv_decode_close(AVCodecContext *avctx)
+{
+    QSVH2645Context *s = avctx->priv_data;
+
+    ff_qsv_decode_close(&s->qsv);
+
+    av_bitstream_filter_close(s->bsf);
+
+    return 0;
+}
+
+static av_cold int qsv_decode_init(AVCodecContext *avctx)
+{
+    QSVH2645Context *s = avctx->priv_data;
+    int ret;
+
+    if (avctx->codec_id == AV_CODEC_ID_HEVC && s->load_plugin != LOAD_PLUGIN_NONE) {
+        static const char *uid_hevcenc_sw = "15dd936825ad475ea34e35f3f54217a6";
+
+        if (s->qsv.load_plugins[0]) {
+            av_log(avctx, AV_LOG_WARNING,
+                   "load_plugins is not empty, but load_plugin is not set to 'none'."
+                   "The load_plugin value will be ignored.\n");
+        } else {
+            av_freep(&s->qsv.load_plugins);
+            s->qsv.load_plugins = av_strdup(uid_hevcenc_sw);
+            if (!s->qsv.load_plugins)
+                return AVERROR(ENOMEM);
+        }
+    }
+
+    if (avctx->codec_id == AV_CODEC_ID_H264)
+        s->bsf = av_bitstream_filter_init("h264_mp4toannexb");
+    else
+        s->bsf = av_bitstream_filter_init("hevc_mp4toannexb");
+    if (!s->bsf) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    return 0;
+fail:
+    qsv_decode_close(avctx);
+    return ret;
+}
+
+static int qsv_decode_frame(AVCodecContext *avctx, void *data,
+                            int *got_frame, AVPacket *avpkt)
+{
+    QSVH2645Context *s = avctx->priv_data;
+    AVFrame *frame    = data;
+    int ret;
+    uint8_t *p_filtered = NULL;
+    int      n_filtered = NULL;
+    AVPacket pkt_filtered = { 0 };
+
+    if (avpkt->size) {
+        if (avpkt->size > 3 && !avpkt->data[0] &&
+            !avpkt->data[1] && !avpkt->data[2] && 1==avpkt->data[3]) {
+            /* we already have annex-b prefix */
+            return ff_qsv_decode(avctx, &s->qsv, frame, got_frame, avpkt);
+
+        } else {
+            /* no annex-b prefix. try to restore: */
+            ret = av_bitstream_filter_filter(s->bsf, avctx, "private_spspps_buf",
+                                         &p_filtered, &n_filtered,
+                                         avpkt->data, avpkt->size, 0);
+            if (ret>=0) {
+                pkt_filtered.pts  = avpkt->pts;
+                pkt_filtered.data = p_filtered;
+                pkt_filtered.size = n_filtered;
+
+                ret = ff_qsv_decode(avctx, &s->qsv, frame, got_frame, &pkt_filtered);
+
+                if (p_filtered != avpkt->data)
+                    av_free(p_filtered);
+                return ret > 0 ? avpkt->size : ret;
+            }
+        }
+    }
+
+    return ff_qsv_decode(avctx, &s->qsv, frame, got_frame, avpkt);
+}
+
+static void qsv_decode_flush(AVCodecContext *avctx)
+{
+//    QSVH2645Context *s = avctx->priv_data;
+    /* TODO: flush qsv engine if necessary */
+}
+
+#define OFFSET(x) offsetof(QSVH2645Context, x)
+#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
+
+#if CONFIG_HEVC_QSV_DECODER
+AVHWAccel ff_hevc_qsv_hwaccel = {
+    .name           = "hevc_qsv",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_HEVC,
+    .pix_fmt        = AV_PIX_FMT_QSV,
+};
+
+static const AVOption hevc_options[] = {
+    { "async_depth", "Internal parallelization depth, the higher the value the higher the latency.", OFFSET(qsv.async_depth), AV_OPT_TYPE_INT, { .i64 = ASYNC_DEPTH_DEFAULT }, 0, INT_MAX, VD },
+
+    { "load_plugin", "A user plugin to load in an internal session", OFFSET(load_plugin), AV_OPT_TYPE_INT, { .i64 = LOAD_PLUGIN_HEVC_SW }, LOAD_PLUGIN_NONE, LOAD_PLUGIN_HEVC_SW, VD, "load_plugin" },
+    { "none",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_NONE },    0, 0, VD, "load_plugin" },
+    { "hevc_sw",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_SW }, 0, 0, VD, "load_plugin" },
+
+    { "load_plugins", "A :-separate list of hexadecimal plugin UIDs to load in an internal session",
+        OFFSET(qsv.load_plugins), AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VD },
+    { NULL },
+};
+
+static const AVClass hevc_class = {
+    .class_name = "hevc_qsv",
+    .item_name  = av_default_item_name,
+    .option     = hevc_options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_hevc_qsv_decoder = {
+    .name           = "hevc_qsv",
+    .long_name      = NULL_IF_CONFIG_SMALL("HEVC (Intel Quick Sync Video acceleration)"),
+    .priv_data_size = sizeof(QSVH2645Context),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_HEVC,
+    .init           = qsv_decode_init,
+    .decode         = qsv_decode_frame,
+    .flush          = qsv_decode_flush,
+    .close          = qsv_decode_close,
+    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
+    .priv_class     = &hevc_class,
+};
+#endif
+
+#if CONFIG_H264_QSV_DECODER
+AVHWAccel ff_h264_qsv_hwaccel = {
+    .name           = "h264_qsv",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_H264,
+    .pix_fmt        = AV_PIX_FMT_QSV,
+};
+
+static const AVOption options[] = {
+    { "async_depth", "Internal parallelization depth, the higher the value the higher the latency.", OFFSET(qsv.async_depth), AV_OPT_TYPE_INT, { .i64 = ASYNC_DEPTH_DEFAULT }, 0, INT_MAX, VD },
+    { NULL },
+};
+
+static const AVClass class = {
+    .class_name = "h264_qsv",
+    .item_name  = av_default_item_name,
+    .option     = options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_h264_qsv_decoder = {
+    .name           = "h264_qsv",
+    .long_name      = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (Intel Quick Sync Video acceleration)"),
+    .priv_data_size = sizeof(QSVH2645Context),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_H264,
+    .init           = qsv_decode_init,
+    .decode         = qsv_decode_frame,
+    .flush          = qsv_decode_flush,
+    .close          = qsv_decode_close,
+    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
+    .priv_class     = &class,
+};
+#endif