2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include <vdpau/vdpau.h>
22 #include <vdpau/vdpau_x11.h>
28 #include "libavcodec/vdpau.h"
30 #include "libavutil/avassert.h"
31 #include "libavutil/buffer.h"
32 #include "libavutil/frame.h"
33 #include "libavutil/hwcontext.h"
34 #include "libavutil/hwcontext_vdpau.h"
35 #include "libavutil/pixfmt.h"
37 typedef struct VDPAUContext {
38 AVBufferRef *hw_frames_ctx;
42 typedef struct VDPAUHWDevicePriv {
43 VdpDeviceDestroy *device_destroy;
47 static void device_free(AVHWDeviceContext *ctx)
49 AVVDPAUDeviceContext *hwctx = ctx->hwctx;
50 VDPAUHWDevicePriv *priv = ctx->user_opaque;
52 if (priv->device_destroy)
53 priv->device_destroy(hwctx->device);
55 XCloseDisplay(priv->dpy);
59 static void vdpau_uninit(AVCodecContext *s)
61 InputStream *ist = s->opaque;
62 VDPAUContext *ctx = ist->hwaccel_ctx;
64 ist->hwaccel_uninit = NULL;
65 ist->hwaccel_get_buffer = NULL;
66 ist->hwaccel_retrieve_data = NULL;
68 av_buffer_unref(&ctx->hw_frames_ctx);
69 av_frame_free(&ctx->tmp_frame);
71 av_freep(&ist->hwaccel_ctx);
72 av_freep(&s->hwaccel_context);
75 static int vdpau_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
77 InputStream *ist = s->opaque;
78 VDPAUContext *ctx = ist->hwaccel_ctx;
80 return av_hwframe_get_buffer(ctx->hw_frames_ctx, frame, 0);
83 static int vdpau_retrieve_data(AVCodecContext *s, AVFrame *frame)
85 InputStream *ist = s->opaque;
86 VDPAUContext *ctx = ist->hwaccel_ctx;
89 ret = av_hwframe_transfer_data(ctx->tmp_frame, frame, 0);
93 ret = av_frame_copy_props(ctx->tmp_frame, frame);
95 av_frame_unref(ctx->tmp_frame);
99 av_frame_unref(frame);
100 av_frame_move_ref(frame, ctx->tmp_frame);
105 static int vdpau_alloc(AVCodecContext *s)
107 InputStream *ist = s->opaque;
108 int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
110 const char *display, *vendor;
115 VdpGetProcAddress *get_proc_address;
116 VdpGetInformationString *get_information_string;
118 VDPAUHWDevicePriv *device_priv = NULL;
119 AVBufferRef *device_ref = NULL;
120 AVHWDeviceContext *device_ctx;
121 AVVDPAUDeviceContext *device_hwctx;
122 AVHWFramesContext *frames_ctx;
124 ctx = av_mallocz(sizeof(*ctx));
126 return AVERROR(ENOMEM);
128 device_priv = av_mallocz(sizeof(*device_priv));
134 ist->hwaccel_ctx = ctx;
135 ist->hwaccel_uninit = vdpau_uninit;
136 ist->hwaccel_get_buffer = vdpau_get_buffer;
137 ist->hwaccel_retrieve_data = vdpau_retrieve_data;
139 ctx->tmp_frame = av_frame_alloc();
143 device_priv->dpy = XOpenDisplay(ist->hwaccel_device);
144 if (!device_priv->dpy) {
145 av_log(NULL, loglevel, "Cannot open the X11 display %s.\n",
146 XDisplayName(ist->hwaccel_device));
149 display = XDisplayString(device_priv->dpy);
151 err = vdp_device_create_x11(device_priv->dpy, XDefaultScreen(device_priv->dpy),
152 &device, &get_proc_address);
153 if (err != VDP_STATUS_OK) {
154 av_log(NULL, loglevel, "VDPAU device creation on X11 display %s failed.\n",
159 #define GET_CALLBACK(id, result) \
162 err = get_proc_address(device, id, &tmp); \
163 if (err != VDP_STATUS_OK) { \
164 av_log(NULL, loglevel, "Error getting the " #id " callback.\n"); \
170 GET_CALLBACK(VDP_FUNC_ID_GET_INFORMATION_STRING, get_information_string);
171 GET_CALLBACK(VDP_FUNC_ID_DEVICE_DESTROY, device_priv->device_destroy);
173 device_ref = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_VDPAU);
176 device_ctx = (AVHWDeviceContext*)device_ref->data;
177 device_hwctx = device_ctx->hwctx;
178 device_ctx->user_opaque = device_priv;
179 device_ctx->free = device_free;
180 device_hwctx->device = device;
181 device_hwctx->get_proc_address = get_proc_address;
185 ret = av_hwdevice_ctx_init(device_ref);
189 ctx->hw_frames_ctx = av_hwframe_ctx_alloc(device_ref);
190 if (!ctx->hw_frames_ctx)
192 av_buffer_unref(&device_ref);
194 frames_ctx = (AVHWFramesContext*)ctx->hw_frames_ctx->data;
195 frames_ctx->format = AV_PIX_FMT_VDPAU;
196 frames_ctx->sw_format = s->sw_pix_fmt;
197 frames_ctx->width = s->coded_width;
198 frames_ctx->height = s->coded_height;
200 ret = av_hwframe_ctx_init(ctx->hw_frames_ctx);
204 if (av_vdpau_bind_context(s, device, get_proc_address, 0))
207 get_information_string(&vendor);
208 av_log(NULL, AV_LOG_VERBOSE, "Using VDPAU -- %s -- on X11 display %s, "
209 "to decode input stream #%d:%d.\n", vendor,
210 display, ist->file_index, ist->st->index);
215 av_log(NULL, loglevel, "VDPAU init failed for stream #%d:%d.\n",
216 ist->file_index, ist->st->index);
218 if (device_priv->device_destroy)
219 device_priv->device_destroy(device);
220 if (device_priv->dpy)
221 XCloseDisplay(device_priv->dpy);
223 av_freep(&device_priv);
224 av_buffer_unref(&device_ref);
226 return AVERROR(EINVAL);
229 int vdpau_init(AVCodecContext *s)
231 InputStream *ist = s->opaque;
233 if (!ist->hwaccel_ctx) {
234 int ret = vdpau_alloc(s);
239 ist->hwaccel_get_buffer = vdpau_get_buffer;
240 ist->hwaccel_retrieve_data = vdpau_retrieve_data;