[deb_ffmpeg.git] / ffmpeg / ffmpeg_vdpau.c

/*
 * 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 <vdpau/vdpau.h>
#include <vdpau/vdpau_x11.h>

#include <X11/Xlib.h>

#include "ffmpeg.h"

#include "libavcodec/vdpau.h"

#include "libavutil/avassert.h"
#include "libavutil/buffer.h"
#include "libavutil/frame.h"
#include "libavutil/pixfmt.h"

typedef struct VDPAUContext {
    Display *dpy;

    VdpDevice  device;
    VdpDecoder decoder;
    VdpGetProcAddress *get_proc_address;

    VdpGetErrorString                               *get_error_string;
    VdpGetInformationString                         *get_information_string;
    VdpDeviceDestroy                                *device_destroy;
    VdpDecoderCreate                                *decoder_create;
    VdpDecoderDestroy                               *decoder_destroy;
    VdpDecoderRender                                *decoder_render;
    VdpVideoSurfaceCreate                           *video_surface_create;
    VdpVideoSurfaceDestroy                          *video_surface_destroy;
    VdpVideoSurfaceGetBitsYCbCr                     *video_surface_get_bits;
    VdpVideoSurfaceGetParameters                    *video_surface_get_parameters;
    VdpVideoSurfaceQueryGetPutBitsYCbCrCapabilities *video_surface_query;

    AVFrame *tmp_frame;

    enum AVPixelFormat pix_fmt;
    VdpYCbCrFormat vdpau_format;
} 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;

    if (ctx->decoder_destroy)
        ctx->decoder_destroy(ctx->decoder);

    if (ctx->device_destroy)
        ctx->device_destroy(ctx->device);

    if (ctx->dpy)
        XCloseDisplay(ctx->dpy);

    av_frame_free(&ctx->tmp_frame);

    av_freep(&ist->hwaccel_ctx);
    av_freep(&s->hwaccel_context);
}

static void vdpau_release_buffer(void *opaque, uint8_t *data)
{
    VdpVideoSurface surface = *(VdpVideoSurface*)data;
    VDPAUContext *ctx = opaque;

    ctx->video_surface_destroy(surface);
    av_freep(&data);
}

static int vdpau_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
{
    InputStream         *ist = s->opaque;
    VDPAUContext        *ctx = ist->hwaccel_ctx;
    VdpVideoSurface *surface;
    VdpStatus err;

    av_assert0(frame->format == AV_PIX_FMT_VDPAU);

    surface = av_malloc(sizeof(*surface));
    if (!surface)
        return AVERROR(ENOMEM);

    frame->buf[0] = av_buffer_create((uint8_t*)surface, sizeof(*surface),
                                     vdpau_release_buffer, ctx,
                                     AV_BUFFER_FLAG_READONLY);
    if (!frame->buf[0]) {
        av_freep(&surface);
        return AVERROR(ENOMEM);
    }

    // properly we should keep a pool of surfaces instead of creating
    // them anew for each frame, but since we don't care about speed
    // much in this code, we don't bother
    err = ctx->video_surface_create(ctx->device, VDP_CHROMA_TYPE_420,
                                    frame->width, frame->height, surface);
    if (err != VDP_STATUS_OK) {
        av_log(NULL, AV_LOG_ERROR, "Error allocating a VDPAU video surface: %s\n",
               ctx->get_error_string(err));
        av_buffer_unref(&frame->buf[0]);
        return AVERROR_UNKNOWN;
    }

    frame->data[3] = (uint8_t*)(uintptr_t)*surface;

    return 0;
}

static int vdpau_retrieve_data(AVCodecContext *s, AVFrame *frame)
{
    VdpVideoSurface surface = (VdpVideoSurface)(uintptr_t)frame->data[3];
    InputStream        *ist = s->opaque;
    VDPAUContext       *ctx = ist->hwaccel_ctx;
    VdpStatus err;
    int ret, chroma_type;

    err = ctx->video_surface_get_parameters(surface, &chroma_type,
                                            &ctx->tmp_frame->width,
                                            &ctx->tmp_frame->height);
    if (err != VDP_STATUS_OK) {
        av_log(NULL, AV_LOG_ERROR, "Error getting surface parameters: %s\n",
               ctx->get_error_string(err));
        return AVERROR_UNKNOWN;
    }
    ctx->tmp_frame->format = ctx->pix_fmt;

    ret = av_frame_get_buffer(ctx->tmp_frame, 32);
    if (ret < 0)
        return ret;

    ctx->tmp_frame->width  = frame->width;
    ctx->tmp_frame->height = frame->height;

    err = ctx->video_surface_get_bits(surface, ctx->vdpau_format,
                                      (void * const *)ctx->tmp_frame->data,
                                      ctx->tmp_frame->linesize);
    if (err != VDP_STATUS_OK) {
        av_log(NULL, AV_LOG_ERROR, "Error retrieving frame data from VDPAU: %s\n",
               ctx->get_error_string(err));
        ret = AVERROR_UNKNOWN;
        goto fail;
    }

    if (ctx->vdpau_format == VDP_YCBCR_FORMAT_YV12)
        FFSWAP(uint8_t*, ctx->tmp_frame->data[1], ctx->tmp_frame->data[2]);

    ret = av_frame_copy_props(ctx->tmp_frame, frame);
    if (ret < 0)
        goto fail;

    av_frame_unref(frame);
    av_frame_move_ref(frame, ctx->tmp_frame);
    return 0;

fail:
    av_frame_unref(ctx->tmp_frame);
    return ret;
}

static const int vdpau_formats[][2] = {
    { VDP_YCBCR_FORMAT_YV12, AV_PIX_FMT_YUV420P },
    { VDP_YCBCR_FORMAT_NV12, AV_PIX_FMT_NV12 },
    { VDP_YCBCR_FORMAT_YUYV, AV_PIX_FMT_YUYV422 },
    { VDP_YCBCR_FORMAT_UYVY, AV_PIX_FMT_UYVY422 },
};

static int vdpau_alloc(AVCodecContext *s)
{
    InputStream  *ist = s->opaque;
    int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
    AVVDPAUContext *vdpau_ctx;
    VDPAUContext *ctx;
    const char *display, *vendor;
    VdpStatus err;
    int i;

    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;

    ctx->dpy = XOpenDisplay(ist->hwaccel_device);
    if (!ctx->dpy) {
        av_log(NULL, loglevel, "Cannot open the X11 display %s.\n",
               XDisplayName(ist->hwaccel_device));
        goto fail;
    }
    display = XDisplayString(ctx->dpy);

    err = vdp_device_create_x11(ctx->dpy, XDefaultScreen(ctx->dpy), &ctx->device,
                                &ctx->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 = ctx->get_proc_address(ctx->device, id, &tmp);                         \
    if (err != VDP_STATUS_OK) {                                                 \
        av_log(NULL, loglevel, "Error getting the " #id " callback.\n");        \
        goto fail;                                                              \
    }                                                                           \
    ctx->result = tmp;                                                          \
} while (0)

    GET_CALLBACK(VDP_FUNC_ID_GET_ERROR_STRING,               get_error_string);
    GET_CALLBACK(VDP_FUNC_ID_GET_INFORMATION_STRING,         get_information_string);
    GET_CALLBACK(VDP_FUNC_ID_DEVICE_DESTROY,                 device_destroy);
    GET_CALLBACK(VDP_FUNC_ID_DECODER_CREATE,                 decoder_create);
    GET_CALLBACK(VDP_FUNC_ID_DECODER_DESTROY,                decoder_destroy);
    GET_CALLBACK(VDP_FUNC_ID_DECODER_RENDER,                 decoder_render);
    GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_CREATE,           video_surface_create);
    GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_DESTROY,          video_surface_destroy);
    GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_GET_BITS_Y_CB_CR, video_surface_get_bits);
    GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_GET_PARAMETERS,   video_surface_get_parameters);
    GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_QUERY_GET_PUT_BITS_Y_CB_CR_CAPABILITIES,
                 video_surface_query);

    for (i = 0; i < FF_ARRAY_ELEMS(vdpau_formats); i++) {
        VdpBool supported;
        err = ctx->video_surface_query(ctx->device, VDP_CHROMA_TYPE_420,
                                       vdpau_formats[i][0], &supported);
        if (err != VDP_STATUS_OK) {
            av_log(NULL, loglevel,
                   "Error querying VDPAU surface capabilities: %s\n",
                   ctx->get_error_string(err));
            goto fail;
        }
        if (supported)
            break;
    }
    if (i == FF_ARRAY_ELEMS(vdpau_formats)) {
        av_log(NULL, loglevel,
               "No supported VDPAU format for retrieving the data.\n");
        return AVERROR(EINVAL);
    }
    ctx->vdpau_format = vdpau_formats[i][0];
    ctx->pix_fmt      = vdpau_formats[i][1];

    vdpau_ctx = av_vdpau_alloc_context();
    if (!vdpau_ctx)
        goto fail;
    vdpau_ctx->render = ctx->decoder_render;

    s->hwaccel_context = vdpau_ctx;

    ctx->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);
    vdpau_uninit(s);
    return AVERROR(EINVAL);
}

int vdpau_init(AVCodecContext *s)
{
    InputStream *ist = s->opaque;
    int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
    AVVDPAUContext *vdpau_ctx;
    VDPAUContext *ctx;
    VdpStatus err;
    int profile, ret;

    if (!ist->hwaccel_ctx) {
        ret = vdpau_alloc(s);
        if (ret < 0)
            return ret;
    }
    ctx       = ist->hwaccel_ctx;
    vdpau_ctx = s->hwaccel_context;

    ret = av_vdpau_get_profile(s, &profile);
    if (ret < 0) {
        av_log(NULL, loglevel, "No known VDPAU decoder profile for this stream.\n");
        return AVERROR(EINVAL);
    }

    if (ctx->decoder)
        ctx->decoder_destroy(ctx->decoder);

    err = ctx->decoder_create(ctx->device, profile,
                              s->coded_width, s->coded_height,
                              16, &ctx->decoder);
    if (err != VDP_STATUS_OK) {
        av_log(NULL, loglevel, "Error creating the VDPAU decoder: %s\n",
               ctx->get_error_string(err));
        return AVERROR_UNKNOWN;
    }

    vdpau_ctx->decoder = ctx->decoder;

    ist->hwaccel_get_buffer    = vdpau_get_buffer;
    ist->hwaccel_retrieve_data = vdpau_retrieve_data;

    return 0;
}
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* This file is part of FFmpeg.
	3	*
	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.
	8	*
	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.
	13	*
	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
	17	*/
	18
	19	#include <stdint.h>
	20
	21	#include <vdpau/vdpau.h>
	22	#include <vdpau/vdpau_x11.h>
	23
	24	#include <X11/Xlib.h>
	25
	26	#include "ffmpeg.h"
	27
	28	#include "libavcodec/vdpau.h"
	29
	30	#include "libavutil/avassert.h"
	31	#include "libavutil/buffer.h"
	32	#include "libavutil/frame.h"
	33	#include "libavutil/pixfmt.h"
	34
	35	typedef struct VDPAUContext {
	36	Display *dpy;
	37
	38	VdpDevice device;
	39	VdpDecoder decoder;
	40	VdpGetProcAddress *get_proc_address;
	41
	42	VdpGetErrorString *get_error_string;
	43	VdpGetInformationString *get_information_string;
	44	VdpDeviceDestroy *device_destroy;
	45	VdpDecoderCreate *decoder_create;
	46	VdpDecoderDestroy *decoder_destroy;
	47	VdpDecoderRender *decoder_render;
	48	VdpVideoSurfaceCreate *video_surface_create;
	49	VdpVideoSurfaceDestroy *video_surface_destroy;
	50	VdpVideoSurfaceGetBitsYCbCr *video_surface_get_bits;
	51	VdpVideoSurfaceGetParameters *video_surface_get_parameters;
	52	VdpVideoSurfaceQueryGetPutBitsYCbCrCapabilities *video_surface_query;
	53
	54	AVFrame *tmp_frame;
	55
	56	enum AVPixelFormat pix_fmt;
	57	VdpYCbCrFormat vdpau_format;
	58	} VDPAUContext;
	59
	60	static void vdpau_uninit(AVCodecContext *s)
	61	{
	62	InputStream *ist = s->opaque;
	63	VDPAUContext *ctx = ist->hwaccel_ctx;
	64
65	ist->hwaccel_uninit = NULL;
66	ist->hwaccel_get_buffer = NULL;
67	ist->hwaccel_retrieve_data = NULL;
68
69	if (ctx->decoder_destroy)
70	ctx->decoder_destroy(ctx->decoder);
71
72	if (ctx->device_destroy)
73	ctx->device_destroy(ctx->device);
74
75	if (ctx->dpy)
76	XCloseDisplay(ctx->dpy);
77
78	av_frame_free(&ctx->tmp_frame);
79
80	av_freep(&ist->hwaccel_ctx);
81	av_freep(&s->hwaccel_context);
82	}
83
84	static void vdpau_release_buffer(void opaque, uint8_t data)
85	{
86	VdpVideoSurface surface = (VdpVideoSurface)data;
87	VDPAUContext *ctx = opaque;
88
89	ctx->video_surface_destroy(surface);
90	av_freep(&data);
91	}
92
93	static int vdpau_get_buffer(AVCodecContext s, AVFrame frame, int flags)
94	{
95	InputStream *ist = s->opaque;
96	VDPAUContext *ctx = ist->hwaccel_ctx;
97	VdpVideoSurface *surface;
98	VdpStatus err;
99
100	av_assert0(frame->format == AV_PIX_FMT_VDPAU);
101
102	surface = av_malloc(sizeof(*surface));
103	if (!surface)
104	return AVERROR(ENOMEM);
105
106	frame->buf[0] = av_buffer_create((uint8_t)surface, sizeof(surface),
107	vdpau_release_buffer, ctx,
108	AV_BUFFER_FLAG_READONLY);
109	if (!frame->buf[0]) {
110	av_freep(&surface);
111	return AVERROR(ENOMEM);
112	}
113
114	// properly we should keep a pool of surfaces instead of creating
115	// them anew for each frame, but since we don't care about speed
116	// much in this code, we don't bother
117	err = ctx->video_surface_create(ctx->device, VDP_CHROMA_TYPE_420,
118	frame->width, frame->height, surface);
119	if (err != VDP_STATUS_OK) {
120	av_log(NULL, AV_LOG_ERROR, "Error allocating a VDPAU video surface: %s\n",
121	ctx->get_error_string(err));
122	av_buffer_unref(&frame->buf[0]);
123	return AVERROR_UNKNOWN;
124	}
125
126	frame->data[3] = (uint8_t)(uintptr_t)surface;
127
128	return 0;
129	}
130
131	static int vdpau_retrieve_data(AVCodecContext s, AVFrame frame)
132	{
133	VdpVideoSurface surface = (VdpVideoSurface)(uintptr_t)frame->data[3];
134	InputStream *ist = s->opaque;
135	VDPAUContext *ctx = ist->hwaccel_ctx;
136	VdpStatus err;
137	int ret, chroma_type;
138
139	err = ctx->video_surface_get_parameters(surface, &chroma_type,
140	&ctx->tmp_frame->width,
141	&ctx->tmp_frame->height);
142	if (err != VDP_STATUS_OK) {
143	av_log(NULL, AV_LOG_ERROR, "Error getting surface parameters: %s\n",
144	ctx->get_error_string(err));
145	return AVERROR_UNKNOWN;
146	}
147	ctx->tmp_frame->format = ctx->pix_fmt;
148
149	ret = av_frame_get_buffer(ctx->tmp_frame, 32);
150	if (ret < 0)
151	return ret;
152
153	ctx->tmp_frame->width = frame->width;
154	ctx->tmp_frame->height = frame->height;
155
156	err = ctx->video_surface_get_bits(surface, ctx->vdpau_format,
157	(void * const *)ctx->tmp_frame->data,
158	ctx->tmp_frame->linesize);
159	if (err != VDP_STATUS_OK) {
160	av_log(NULL, AV_LOG_ERROR, "Error retrieving frame data from VDPAU: %s\n",
161	ctx->get_error_string(err));
162	ret = AVERROR_UNKNOWN;
163	goto fail;
164	}
165
166	if (ctx->vdpau_format == VDP_YCBCR_FORMAT_YV12)
167	FFSWAP(uint8_t*, ctx->tmp_frame->data[1], ctx->tmp_frame->data[2]);
168
169	ret = av_frame_copy_props(ctx->tmp_frame, frame);
170	if (ret < 0)
171	goto fail;
172
173	av_frame_unref(frame);
174	av_frame_move_ref(frame, ctx->tmp_frame);
175	return 0;
176
177	fail:
178	av_frame_unref(ctx->tmp_frame);
179	return ret;
180	}
181
182	static const int vdpau_formats[][2] = {
183	{ VDP_YCBCR_FORMAT_YV12, AV_PIX_FMT_YUV420P },
184	{ VDP_YCBCR_FORMAT_NV12, AV_PIX_FMT_NV12 },
185	{ VDP_YCBCR_FORMAT_YUYV, AV_PIX_FMT_YUYV422 },
186	{ VDP_YCBCR_FORMAT_UYVY, AV_PIX_FMT_UYVY422 },
187	};
188
189	static int vdpau_alloc(AVCodecContext *s)
190	{
191	InputStream *ist = s->opaque;
192	int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
193	AVVDPAUContext *vdpau_ctx;
194	VDPAUContext *ctx;
195	const char display, vendor;
196	VdpStatus err;
197	int i;
198
199	ctx = av_mallocz(sizeof(*ctx));
200	if (!ctx)
201	return AVERROR(ENOMEM);
202
203	ist->hwaccel_ctx = ctx;
204	ist->hwaccel_uninit = vdpau_uninit;
205	ist->hwaccel_get_buffer = vdpau_get_buffer;
206	ist->hwaccel_retrieve_data = vdpau_retrieve_data;
207
208	ctx->tmp_frame = av_frame_alloc();
209	if (!ctx->tmp_frame)
210	goto fail;
211
212	ctx->dpy = XOpenDisplay(ist->hwaccel_device);
213	if (!ctx->dpy) {
214	av_log(NULL, loglevel, "Cannot open the X11 display %s.\n",
215	XDisplayName(ist->hwaccel_device));
216	goto fail;
217	}
218	display = XDisplayString(ctx->dpy);
219
220	err = vdp_device_create_x11(ctx->dpy, XDefaultScreen(ctx->dpy), &ctx->device,
221	&ctx->get_proc_address);
222	if (err != VDP_STATUS_OK) {
223	av_log(NULL, loglevel, "VDPAU device creation on X11 display %s failed.\n",
224	display);
225	goto fail;
226	}
227
228	#define GET_CALLBACK(id, result) \
229	do { \
230	void *tmp; \
231	err = ctx->get_proc_address(ctx->device, id, &tmp); \
232	if (err != VDP_STATUS_OK) { \
233	av_log(NULL, loglevel, "Error getting the " #id " callback.\n"); \
234	goto fail; \
235	} \
236	ctx->result = tmp; \
237	} while (0)
238
239	GET_CALLBACK(VDP_FUNC_ID_GET_ERROR_STRING, get_error_string);
240	GET_CALLBACK(VDP_FUNC_ID_GET_INFORMATION_STRING, get_information_string);
241	GET_CALLBACK(VDP_FUNC_ID_DEVICE_DESTROY, device_destroy);
242	GET_CALLBACK(VDP_FUNC_ID_DECODER_CREATE, decoder_create);
243	GET_CALLBACK(VDP_FUNC_ID_DECODER_DESTROY, decoder_destroy);
244	GET_CALLBACK(VDP_FUNC_ID_DECODER_RENDER, decoder_render);
245	GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_CREATE, video_surface_create);
246	GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_DESTROY, video_surface_destroy);
247	GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_GET_BITS_Y_CB_CR, video_surface_get_bits);
248	GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_GET_PARAMETERS, video_surface_get_parameters);
249	GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_QUERY_GET_PUT_BITS_Y_CB_CR_CAPABILITIES,
250	video_surface_query);
251
252	for (i = 0; i < FF_ARRAY_ELEMS(vdpau_formats); i++) {
253	VdpBool supported;
254	err = ctx->video_surface_query(ctx->device, VDP_CHROMA_TYPE_420,
255	vdpau_formats[i][0], &supported);
256	if (err != VDP_STATUS_OK) {
257	av_log(NULL, loglevel,
258	"Error querying VDPAU surface capabilities: %s\n",
259	ctx->get_error_string(err));
260	goto fail;
261	}
262	if (supported)
263	break;
264	}
265	if (i == FF_ARRAY_ELEMS(vdpau_formats)) {
266	av_log(NULL, loglevel,
267	"No supported VDPAU format for retrieving the data.\n");
268	return AVERROR(EINVAL);
269	}
270	ctx->vdpau_format = vdpau_formats[i][0];
271	ctx->pix_fmt = vdpau_formats[i][1];
272
273	vdpau_ctx = av_vdpau_alloc_context();
274	if (!vdpau_ctx)
275	goto fail;
276	vdpau_ctx->render = ctx->decoder_render;
277
278	s->hwaccel_context = vdpau_ctx;
279
280	ctx->get_information_string(&vendor);
281	av_log(NULL, AV_LOG_VERBOSE, "Using VDPAU -- %s -- on X11 display %s, "
282	"to decode input stream #%d:%d.\n", vendor,
283	display, ist->file_index, ist->st->index);
284
285	return 0;
286
287	fail:
288	av_log(NULL, loglevel, "VDPAU init failed for stream #%d:%d.\n",
289	ist->file_index, ist->st->index);
290	vdpau_uninit(s);
291	return AVERROR(EINVAL);
292	}
293
294	int vdpau_init(AVCodecContext *s)
295	{
296	InputStream *ist = s->opaque;
297	int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
298	AVVDPAUContext *vdpau_ctx;
299	VDPAUContext *ctx;
300	VdpStatus err;
301	int profile, ret;
302
303	if (!ist->hwaccel_ctx) {
304	ret = vdpau_alloc(s);
305	if (ret < 0)
306	return ret;
307	}
308	ctx = ist->hwaccel_ctx;
309	vdpau_ctx = s->hwaccel_context;
310
311	ret = av_vdpau_get_profile(s, &profile);
312	if (ret < 0) {
313	av_log(NULL, loglevel, "No known VDPAU decoder profile for this stream.\n");
314	return AVERROR(EINVAL);
315	}
316
317	if (ctx->decoder)
318	ctx->decoder_destroy(ctx->decoder);
319
320	err = ctx->decoder_create(ctx->device, profile,
321	s->coded_width, s->coded_height,
322	16, &ctx->decoder);
323	if (err != VDP_STATUS_OK) {
324	av_log(NULL, loglevel, "Error creating the VDPAU decoder: %s\n",
325	ctx->get_error_string(err));
326	return AVERROR_UNKNOWN;
327	}
328
329	vdpau_ctx->decoder = ctx->decoder;
330
331	ist->hwaccel_get_buffer = vdpau_get_buffer;
332	ist->hwaccel_retrieve_data = vdpau_retrieve_data;
333
334	return 0;
335	}