/* * This file is part of Libav. * * Libav 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. * * Libav 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 Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include "avconv.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; typedef struct VDPAUHWDevicePriv { VdpDeviceDestroy *device_destroy; Display *dpy; } VDPAUHWDevicePriv; static void device_free(AVHWDeviceContext *ctx) { AVVDPAUDeviceContext *hwctx = ctx->hwctx; VDPAUHWDevicePriv *priv = ctx->user_opaque; if (priv->device_destroy) priv->device_destroy(hwctx->device); if (priv->dpy) XCloseDisplay(priv->dpy); av_freep(&priv); } 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; const char *display, *vendor; VdpStatus err; int ret; VdpDevice device; VdpGetProcAddress *get_proc_address; VdpGetInformationString *get_information_string; VDPAUHWDevicePriv *device_priv = NULL; AVBufferRef *device_ref = NULL; AVHWDeviceContext *device_ctx; AVVDPAUDeviceContext *device_hwctx; AVHWFramesContext *frames_ctx; ctx = av_mallocz(sizeof(*ctx)); if (!ctx) return AVERROR(ENOMEM); device_priv = av_mallocz(sizeof(*device_priv)); if (!device_priv) goto fail; 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; device_priv->dpy = XOpenDisplay(ist->hwaccel_device); if (!device_priv->dpy) { av_log(NULL, loglevel, "Cannot open the X11 display %s.\n", XDisplayName(ist->hwaccel_device)); goto fail; } display = XDisplayString(device_priv->dpy); err = vdp_device_create_x11(device_priv->dpy, XDefaultScreen(device_priv->dpy), &device, &get_proc_address); if (err != VDP_STATUS_OK) { av_log(NULL, loglevel, "VDPAU device creation on X11 display %s failed.\n", display); goto fail; } #define GET_CALLBACK(id, result) \ do { \ void *tmp; \ err = get_proc_address(device, id, &tmp); \ if (err != VDP_STATUS_OK) { \ av_log(NULL, loglevel, "Error getting the " #id " callback.\n"); \ goto fail; \ } \ result = tmp; \ } while (0) GET_CALLBACK(VDP_FUNC_ID_GET_INFORMATION_STRING, get_information_string); GET_CALLBACK(VDP_FUNC_ID_DEVICE_DESTROY, device_priv->device_destroy); device_ref = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_VDPAU); if (!device_ref) goto fail; device_ctx = (AVHWDeviceContext*)device_ref->data; device_hwctx = device_ctx->hwctx; device_ctx->user_opaque = device_priv; device_ctx->free = device_free; device_hwctx->device = device; device_hwctx->get_proc_address = get_proc_address; device_priv = NULL; ret = av_hwdevice_ctx_init(device_ref); if (ret < 0) goto fail; 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, get_proc_address, 0)) goto fail; get_information_string(&vendor); av_log(NULL, AV_LOG_VERBOSE, "Using VDPAU -- %s -- on X11 display %s, " "to decode input stream #%d:%d.\n", vendor, display, 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); if (device_priv) { if (device_priv->device_destroy) device_priv->device_destroy(device); if (device_priv->dpy) XCloseDisplay(device_priv->dpy); } av_freep(&device_priv); 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; }