@@ -1522,6 +1522,7 @@ EXAMPLE_LIST="

     scaling_video_example

     transcode_aac_example

     transcoding_example

+    vaapi_encode_example

 "

 EXTERNAL_AUTODETECT_LIBRARY_LIST="

@@ -3300,6 +3301,7 @@ resampling_audio_example_deps="avutil swresample"

 scaling_video_example_deps="avutil swscale"

 transcode_aac_example_deps="avcodec avformat swresample"

 transcoding_example_deps="avfilter avcodec avformat avutil"

+vaapi_encode_example_deps="avcodec avutil"

 # EXTRALIBS_LIST

 cpu_init_extralibs="pthreads_extralibs"

@@ -19,6 +19,7 @@ EXAMPLES-$(CONFIG_RESAMPLING_AUDIO_EXAMPLE)  += resampling_audio

 EXAMPLES-$(CONFIG_SCALING_VIDEO_EXAMPLE)     += scaling_video

 EXAMPLES-$(CONFIG_TRANSCODE_AAC_EXAMPLE)     += transcode_aac

 EXAMPLES-$(CONFIG_TRANSCODING_EXAMPLE)       += transcoding

+EXAMPLES-$(CONFIG_VAAPI_ENCODE_EXAMPLE)      += vaapi_encode

 EXAMPLES       := $(EXAMPLES-yes:%=doc/examples/%$(PROGSSUF)$(EXESUF))

 EXAMPLES_G     := $(EXAMPLES-yes:%=doc/examples/%$(PROGSSUF)_g$(EXESUF))

new file mode 100644

@@ -0,0 +1,224 @@

+/*

+ * Video Acceleration API (video encoding) encode sample

+ *

+ * 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

+ */

+

+/**

+ * @file

+ * Intel VAAPI-accelerated encoding example.

+ *

+ * @example vaapi_encode.c

+ * This example shows how to do VAAPI-accelerated encoding. now only support NV12

+ * raw file, usage like: vaapi_encode 1920 1080 input.yuv output.h264

+ *

+ */

+

+#include <stdio.h>

+#include <string.h>

+#include <errno.h>

+

+#include <libavcodec/avcodec.h>

+#include <libavutil/pixdesc.h>

+#include <libavutil/hwcontext.h>

+

+static int width, height;

+static AVBufferRef *hw_device_ctx = NULL;

+

+static int set_hwframe_ctx(AVCodecContext *ctx, AVBufferRef *hw_device_ctx)

+{

+    AVBufferRef *hw_frames_ref;

+    AVHWFramesContext *frames_ctx = NULL;

+    int err = 0;

+

+    if (!(hw_frames_ref = av_hwframe_ctx_alloc(hw_device_ctx))) {

+        fprintf(stderr, "Failed to create VAAPI frame context.\n");

+        return -1;

+    }

+    frames_ctx = (AVHWFramesContext *)(hw_frames_ref->data);

+    frames_ctx->format    = AV_PIX_FMT_VAAPI;

+    frames_ctx->sw_format = AV_PIX_FMT_NV12;

+    frames_ctx->width     = width;

+    frames_ctx->height    = height;

+    frames_ctx->initial_pool_size = 20;

+    if ((err = av_hwframe_ctx_init(hw_frames_ref)) < 0) {

+        fprintf(stderr, "Failed to initialize VAAPI frame context."

+                "Error code: %s\n",av_err2str(err));

+        return err;

+    }

+    ctx->hw_frames_ctx = av_buffer_ref(hw_frames_ref);

+    if (!ctx->hw_frames_ctx)

+        err = AVERROR(ENOMEM);

+

+    av_buffer_unref(&hw_frames_ref);

+    return err;

+}

+

+static int encode_write(AVCodecContext *avctx, AVFrame *frame, FILE *fout)

+{

+    int ret = 0;

+    AVPacket enc_pkt;

+

+    av_init_packet(&enc_pkt);

+    enc_pkt.data = NULL;

+    enc_pkt.size = 0;

+

+    if ((ret = avcodec_send_frame(avctx, frame)) < 0) {

+        fprintf(stderr, "Error code: %s\n", av_err2str(ret));

+        goto end;

+    }

+    while (1) {

+        ret = avcodec_receive_packet(avctx, &enc_pkt);

+        if (ret)

+            break;

+

+        enc_pkt.stream_index = 0;

+        ret = fwrite(enc_pkt.data, enc_pkt.size, 1, fout);

+        av_packet_unref(&enc_pkt);

+    }

+

+end:

+    ret = ((ret == AVERROR(EAGAIN)) ? 0 : -1);

+    return ret;

+}

+

+int main(int argc, char *argv[])

+{

+    int size, err;

+    FILE *fin = NULL, *fout = NULL;

+    AVFrame *sw_frame = NULL, *hw_frame = NULL;

+    AVCodecContext *avctx = NULL;

+    AVCodec *codec = NULL;

+    const char *enc_name = "h264_vaapi";

+

+    if (argc < 5) {

+        fprintf(stderr, "Usage: %s <width> <height> <input file> <output file>\n", argv[0]);

+        return -1;

+    }

+

+    width  = atoi(argv[1]);

+    height = atoi(argv[2]);

+    size   = width * height;

+

+    if (!(fin = fopen(argv[3], "r"))) {

+        fprintf(stderr, "Fail to open input file : %s\n", strerror(errno));

+        return -1;

+    }

+    if (!(fout = fopen(argv[4], "w+b"))) {

+        fprintf(stderr, "Fail to open output file : %s\n", strerror(errno));

+        err = -1;

+        goto close;

+    }

+

+    avcodec_register_all();

+

+    err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI,

+                                 NULL, NULL, 0);

+    if (err < 0) {

+        fprintf(stderr, "Failed to create a VAAPI device. Error code: %s\n", av_err2str(err));

+        goto close;

+    }

+

+    if (!(codec = avcodec_find_encoder_by_name(enc_name))) {

+        fprintf(stderr, "Could not find encoder.\n");

+        err = -1;

+        goto close;

+    }

+

+    if (!(avctx = avcodec_alloc_context3(codec))) {

+        err = AVERROR(ENOMEM);

+        goto close;

+    }

+

+    avctx->width     = width;

+    avctx->height    = height;

+    avctx->time_base = (AVRational){1, 25};

+    avctx->framerate = (AVRational){25, 1};

+    avctx->sample_aspect_ratio = (AVRational){1, 1};

+    avctx->pix_fmt   = AV_PIX_FMT_VAAPI;

+

+    /* set hw_frames_ctx for encoder's AVCodecContext */

+    if ((err = set_hwframe_ctx(avctx, hw_device_ctx)) < 0) {

+        fprintf(stderr, "Failed to set hwframe context.\n");

+        goto close;

+    }

+

+    if ((err = avcodec_open2(avctx, codec, NULL)) < 0) {

+        fprintf(stderr, "Cannot open video encoder codec. Error code: %s\n", av_err2str(err));

+        goto close;

+    }

+

+    while (1) {

+        if (!(sw_frame = av_frame_alloc())) {

+            err = AVERROR(ENOMEM);

+            goto close;

+        }

+        /* read data into software frame, and transfer them into hw frame */

+        sw_frame->width  = width;

+        sw_frame->height = height;

+        sw_frame->format = AV_PIX_FMT_NV12;

+        if ((err = av_frame_get_buffer(sw_frame, 32)) < 0)

+            goto close;

+        if ((err = fread((uint8_t*)(sw_frame->data[0]), size, 1, fin)) <= 0)

+            break;

+        if ((err = fread((uint8_t*)(sw_frame->data[1]), size/2, 1, fin)) <= 0)

+            break;

+

+        if (!(hw_frame = av_frame_alloc())) {

+            err = AVERROR(ENOMEM);

+            goto close;

+        }

+        if ((err = av_hwframe_get_buffer(avctx->hw_frames_ctx, hw_frame, 0)) < 0) {

+            fprintf(stderr, "Error code: %s.\n", av_err2str(err));

+            goto close;

+        }

+        if (!hw_frame->hw_frames_ctx) {

+            err = AVERROR(ENOMEM);

+            goto close;

+        }

+        if ((err = av_hwframe_transfer_data(hw_frame, sw_frame, 0)) < 0) {

+            fprintf(stderr, "Error while transferring frame data to surface."

+                    "Error code: %s.\n", av_err2str(err));

+            goto close;

+        }

+

+        if ((err = (encode_write(avctx, hw_frame, fout))) < 0) {

+            fprintf(stderr, "Failed to encode.\n");

+            goto close;

+        }

+        av_frame_free(&hw_frame);

+        av_frame_free(&sw_frame);

+    }

+

+    /* flush encoder */

+    err = encode_write(avctx, NULL, fout);

+    if (err == AVERROR_EOF)

+        err = 0;

+

+close:

+    if (fin)

+        fclose(fin);

+    if (fout)

+        fclose(fout);

+    av_frame_free(&sw_frame);

+    av_frame_free(&hw_frame);

+    if (avctx)

+        avcodec_free_context(&avctx);

+    av_buffer_unref(&hw_device_ctx);

+

+    return err;

+}