diff options
Diffstat (limited to 'ffmpeg_qsv.c')
-rw-r--r-- | ffmpeg_qsv.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/ffmpeg_qsv.c b/ffmpeg_qsv.c new file mode 100644 index 0000000000..7442750029 --- /dev/null +++ b/ffmpeg_qsv.c @@ -0,0 +1,109 @@ +/* + * 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 <mfx/mfxvideo.h> +#include <stdlib.h> + +#include "libavutil/dict.h" +#include "libavutil/hwcontext.h" +#include "libavutil/hwcontext_qsv.h" +#include "libavutil/mem.h" +#include "libavutil/opt.h" +#include "libavcodec/qsv.h" + +#include "ffmpeg.h" + +char *qsv_device = NULL; + +static int qsv_get_buffer(AVCodecContext *s, AVFrame *frame, int flags) +{ + InputStream *ist = s->opaque; + + return av_hwframe_get_buffer(ist->hw_frames_ctx, frame, 0); +} + +static void qsv_uninit(AVCodecContext *s) +{ + InputStream *ist = s->opaque; + av_buffer_unref(&ist->hw_frames_ctx); +} + +static int qsv_device_init(InputStream *ist) +{ + int err; + AVDictionary *dict = NULL; + + if (qsv_device) { + err = av_dict_set(&dict, "child_device", qsv_device, 0); + if (err < 0) + return err; + } + + err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_QSV, + ist->hwaccel_device, dict, 0); + if (err < 0) { + av_log(NULL, AV_LOG_ERROR, "Error creating a QSV device\n"); + goto err_out; + } + +err_out: + if (dict) + av_dict_free(&dict); + + return err; +} + +int qsv_init(AVCodecContext *s) +{ + InputStream *ist = s->opaque; + AVHWFramesContext *frames_ctx; + AVQSVFramesContext *frames_hwctx; + int ret; + + if (!hw_device_ctx) { + ret = qsv_device_init(ist); + if (ret < 0) + return ret; + } + + av_buffer_unref(&ist->hw_frames_ctx); + ist->hw_frames_ctx = av_hwframe_ctx_alloc(hw_device_ctx); + if (!ist->hw_frames_ctx) + return AVERROR(ENOMEM); + + frames_ctx = (AVHWFramesContext*)ist->hw_frames_ctx->data; + frames_hwctx = frames_ctx->hwctx; + + frames_ctx->width = FFALIGN(s->coded_width, 32); + frames_ctx->height = FFALIGN(s->coded_height, 32); + frames_ctx->format = AV_PIX_FMT_QSV; + frames_ctx->sw_format = s->sw_pix_fmt; + frames_ctx->initial_pool_size = 64; + frames_hwctx->frame_type = MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET; + + ret = av_hwframe_ctx_init(ist->hw_frames_ctx); + if (ret < 0) { + av_log(NULL, AV_LOG_ERROR, "Error initializing a QSV frame pool\n"); + return ret; + } + + ist->hwaccel_get_buffer = qsv_get_buffer; + ist->hwaccel_uninit = qsv_uninit; + + return 0; +} |