| /* |
| * 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; |
| } |