mirror of https://git.ffmpeg.org/ffmpeg.git
179 lines
5.2 KiB
C
179 lines
5.2 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <mfx/mfxvideo.h>
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#include <stdlib.h>
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#include "libavutil/dict.h"
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#include "libavutil/hwcontext.h"
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#include "libavutil/hwcontext_qsv.h"
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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#include "libavcodec/qsv.h"
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#include "ffmpeg.h"
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static int qsv_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
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{
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InputStream *ist = s->opaque;
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return av_hwframe_get_buffer(ist->hw_frames_ctx, frame, 0);
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}
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static void qsv_uninit(AVCodecContext *s)
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{
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InputStream *ist = s->opaque;
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av_buffer_unref(&ist->hw_frames_ctx);
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}
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static int qsv_device_init(InputStream *ist)
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{
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int err;
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err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_QSV,
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ist->hwaccel_device, NULL, 0);
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if (err < 0) {
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av_log(NULL, AV_LOG_ERROR, "Error creating a QSV device\n");
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return err;
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}
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return 0;
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}
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int qsv_init(AVCodecContext *s)
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{
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InputStream *ist = s->opaque;
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AVHWFramesContext *frames_ctx;
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AVQSVFramesContext *frames_hwctx;
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int ret;
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if (!hw_device_ctx) {
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ret = qsv_device_init(ist);
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if (ret < 0)
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return ret;
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}
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av_buffer_unref(&ist->hw_frames_ctx);
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ist->hw_frames_ctx = av_hwframe_ctx_alloc(hw_device_ctx);
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if (!ist->hw_frames_ctx)
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return AVERROR(ENOMEM);
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frames_ctx = (AVHWFramesContext*)ist->hw_frames_ctx->data;
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frames_hwctx = frames_ctx->hwctx;
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frames_ctx->width = FFALIGN(s->coded_width, 32);
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frames_ctx->height = FFALIGN(s->coded_height, 32);
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frames_ctx->format = AV_PIX_FMT_QSV;
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frames_ctx->sw_format = s->sw_pix_fmt;
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frames_ctx->initial_pool_size = 64;
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frames_hwctx->frame_type = MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET;
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ret = av_hwframe_ctx_init(ist->hw_frames_ctx);
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if (ret < 0) {
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av_log(NULL, AV_LOG_ERROR, "Error initializing a QSV frame pool\n");
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return ret;
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}
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ist->hwaccel_get_buffer = qsv_get_buffer;
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ist->hwaccel_uninit = qsv_uninit;
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return 0;
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}
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int qsv_transcode_init(OutputStream *ost)
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{
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InputStream *ist;
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const enum AVPixelFormat *pix_fmt;
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int err, i;
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AVBufferRef *encode_frames_ref = NULL;
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AVHWFramesContext *encode_frames;
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AVQSVFramesContext *qsv_frames;
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/* check if the encoder supports QSV */
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if (!ost->enc->pix_fmts)
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return 0;
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for (pix_fmt = ost->enc->pix_fmts; *pix_fmt != AV_PIX_FMT_NONE; pix_fmt++)
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if (*pix_fmt == AV_PIX_FMT_QSV)
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break;
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if (*pix_fmt == AV_PIX_FMT_NONE)
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return 0;
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if (strcmp(ost->avfilter, "null") || ost->source_index < 0)
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return 0;
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/* check if the decoder supports QSV and the output only goes to this stream */
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ist = input_streams[ost->source_index];
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if (ist->hwaccel_id != HWACCEL_QSV || !ist->dec || !ist->dec->pix_fmts)
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return 0;
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for (pix_fmt = ist->dec->pix_fmts; *pix_fmt != AV_PIX_FMT_NONE; pix_fmt++)
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if (*pix_fmt == AV_PIX_FMT_QSV)
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break;
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if (*pix_fmt == AV_PIX_FMT_NONE)
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return 0;
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for (i = 0; i < nb_output_streams; i++)
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if (output_streams[i] != ost &&
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output_streams[i]->source_index == ost->source_index)
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return 0;
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av_log(NULL, AV_LOG_VERBOSE, "Setting up QSV transcoding\n");
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if (!hw_device_ctx) {
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err = qsv_device_init(ist);
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if (err < 0)
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goto fail;
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}
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// This creates a dummy hw_frames_ctx for the encoder to be
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// suitably initialised. It only contains one real frame, so
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// hopefully doesn't waste too much memory.
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encode_frames_ref = av_hwframe_ctx_alloc(hw_device_ctx);
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if (!encode_frames_ref) {
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err = AVERROR(ENOMEM);
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goto fail;
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}
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encode_frames = (AVHWFramesContext*)encode_frames_ref->data;
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qsv_frames = encode_frames->hwctx;
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encode_frames->width = FFALIGN(ist->resample_width, 32);
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encode_frames->height = FFALIGN(ist->resample_height, 32);
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encode_frames->format = AV_PIX_FMT_QSV;
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encode_frames->sw_format = AV_PIX_FMT_NV12;
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encode_frames->initial_pool_size = 1;
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qsv_frames->frame_type = MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET;
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err = av_hwframe_ctx_init(encode_frames_ref);
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if (err < 0)
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goto fail;
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ist->dec_ctx->pix_fmt = AV_PIX_FMT_QSV;
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ist->resample_pix_fmt = AV_PIX_FMT_QSV;
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ost->enc_ctx->pix_fmt = AV_PIX_FMT_QSV;
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ost->enc_ctx->hw_frames_ctx = encode_frames_ref;
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return 0;
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fail:
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av_buffer_unref(&encode_frames_ref);
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return err;
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}
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