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