mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-09-11 01:47:55 +02:00
160 lines
4.4 KiB
C
160 lines
4.4 KiB
C
/*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 <stdint.h>
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#include "avconv.h"
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#include "libavcodec/vdpau.h"
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#include "libavutil/buffer.h"
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#include "libavutil/frame.h"
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#include "libavutil/hwcontext.h"
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#include "libavutil/hwcontext_vdpau.h"
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#include "libavutil/pixfmt.h"
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typedef struct VDPAUContext {
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AVBufferRef *hw_frames_ctx;
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AVFrame *tmp_frame;
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} VDPAUContext;
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static void vdpau_uninit(AVCodecContext *s)
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{
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InputStream *ist = s->opaque;
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VDPAUContext *ctx = ist->hwaccel_ctx;
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ist->hwaccel_uninit = NULL;
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ist->hwaccel_get_buffer = NULL;
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ist->hwaccel_retrieve_data = NULL;
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av_buffer_unref(&ctx->hw_frames_ctx);
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av_frame_free(&ctx->tmp_frame);
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av_freep(&ist->hwaccel_ctx);
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av_freep(&s->hwaccel_context);
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}
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static int vdpau_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
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{
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InputStream *ist = s->opaque;
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VDPAUContext *ctx = ist->hwaccel_ctx;
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return av_hwframe_get_buffer(ctx->hw_frames_ctx, frame, 0);
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}
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static int vdpau_retrieve_data(AVCodecContext *s, AVFrame *frame)
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{
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InputStream *ist = s->opaque;
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VDPAUContext *ctx = ist->hwaccel_ctx;
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int ret;
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ret = av_hwframe_transfer_data(ctx->tmp_frame, frame, 0);
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if (ret < 0)
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return ret;
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ret = av_frame_copy_props(ctx->tmp_frame, frame);
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if (ret < 0) {
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av_frame_unref(ctx->tmp_frame);
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return ret;
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}
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av_frame_unref(frame);
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av_frame_move_ref(frame, ctx->tmp_frame);
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return 0;
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}
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static int vdpau_alloc(AVCodecContext *s)
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{
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InputStream *ist = s->opaque;
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int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
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VDPAUContext *ctx;
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int ret;
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AVBufferRef *device_ref = NULL;
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AVHWDeviceContext *device_ctx;
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AVVDPAUDeviceContext *device_hwctx;
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AVHWFramesContext *frames_ctx;
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ctx = av_mallocz(sizeof(*ctx));
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if (!ctx)
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return AVERROR(ENOMEM);
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ist->hwaccel_ctx = ctx;
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ist->hwaccel_uninit = vdpau_uninit;
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ist->hwaccel_get_buffer = vdpau_get_buffer;
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ist->hwaccel_retrieve_data = vdpau_retrieve_data;
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ctx->tmp_frame = av_frame_alloc();
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if (!ctx->tmp_frame)
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goto fail;
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ret = av_hwdevice_ctx_create(&device_ref, AV_HWDEVICE_TYPE_VDPAU,
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ist->hwaccel_device, NULL, 0);
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if (ret < 0)
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goto fail;
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device_ctx = (AVHWDeviceContext*)device_ref->data;
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device_hwctx = device_ctx->hwctx;
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ctx->hw_frames_ctx = av_hwframe_ctx_alloc(device_ref);
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if (!ctx->hw_frames_ctx)
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goto fail;
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av_buffer_unref(&device_ref);
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frames_ctx = (AVHWFramesContext*)ctx->hw_frames_ctx->data;
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frames_ctx->format = AV_PIX_FMT_VDPAU;
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frames_ctx->sw_format = s->sw_pix_fmt;
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frames_ctx->width = s->coded_width;
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frames_ctx->height = s->coded_height;
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ret = av_hwframe_ctx_init(ctx->hw_frames_ctx);
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if (ret < 0)
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goto fail;
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if (av_vdpau_bind_context(s, device_hwctx->device, device_hwctx->get_proc_address, 0))
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goto fail;
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av_log(NULL, AV_LOG_VERBOSE, "Using VDPAU to decode input stream #%d:%d.\n",
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ist->file_index, ist->st->index);
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return 0;
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fail:
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av_log(NULL, loglevel, "VDPAU init failed for stream #%d:%d.\n",
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ist->file_index, ist->st->index);
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av_buffer_unref(&device_ref);
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vdpau_uninit(s);
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return AVERROR(EINVAL);
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}
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int vdpau_init(AVCodecContext *s)
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{
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InputStream *ist = s->opaque;
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if (!ist->hwaccel_ctx) {
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int ret = vdpau_alloc(s);
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if (ret < 0)
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return ret;
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}
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ist->hwaccel_get_buffer = vdpau_get_buffer;
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ist->hwaccel_retrieve_data = vdpau_retrieve_data;
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return 0;
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}
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