/* * 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; } int qsv_transcode_init(OutputStream *ost) { InputStream *ist; const enum AVPixelFormat *pix_fmt; int err, i; AVBufferRef *encode_frames_ref = NULL; AVHWFramesContext *encode_frames; AVQSVFramesContext *qsv_frames; /* check if the encoder supports QSV */ if (!ost->enc->pix_fmts) return 0; for (pix_fmt = ost->enc->pix_fmts; *pix_fmt != AV_PIX_FMT_NONE; pix_fmt++) if (*pix_fmt == AV_PIX_FMT_QSV) break; if (*pix_fmt == AV_PIX_FMT_NONE) return 0; if (strcmp(ost->avfilter, "null") || ost->source_index < 0) return 0; /* check if the decoder supports QSV and the output only goes to this stream */ ist = input_streams[ost->source_index]; if (ist->hwaccel_id != HWACCEL_QSV || !ist->dec || !ist->dec->pix_fmts) return 0; for (pix_fmt = ist->dec->pix_fmts; *pix_fmt != AV_PIX_FMT_NONE; pix_fmt++) if (*pix_fmt == AV_PIX_FMT_QSV) break; if (*pix_fmt == AV_PIX_FMT_NONE) return 0; for (i = 0; i < nb_output_streams; i++) if (output_streams[i] != ost && output_streams[i]->source_index == ost->source_index) return 0; av_log(NULL, AV_LOG_VERBOSE, "Setting up QSV transcoding\n"); if (!hw_device_ctx) { err = qsv_device_init(ist); if (err < 0) goto fail; } // This creates a dummy hw_frames_ctx for the encoder to be // suitably initialised. It only contains one real frame, so // hopefully doesn't waste too much memory. encode_frames_ref = av_hwframe_ctx_alloc(hw_device_ctx); if (!encode_frames_ref) { err = AVERROR(ENOMEM); goto fail; } encode_frames = (AVHWFramesContext*)encode_frames_ref->data; qsv_frames = encode_frames->hwctx; encode_frames->width = FFALIGN(ist->resample_width, 32); encode_frames->height = FFALIGN(ist->resample_height, 32); encode_frames->format = AV_PIX_FMT_QSV; encode_frames->sw_format = AV_PIX_FMT_NV12; encode_frames->initial_pool_size = 1; qsv_frames->frame_type = MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET; err = av_hwframe_ctx_init(encode_frames_ref); if (err < 0) goto fail; ist->dec_ctx->pix_fmt = AV_PIX_FMT_QSV; ist->resample_pix_fmt = AV_PIX_FMT_QSV; ost->enc_ctx->pix_fmt = AV_PIX_FMT_QSV; ost->enc_ctx->hw_frames_ctx = encode_frames_ref; return 0; fail: av_buffer_unref(&encode_frames_ref); return err; }