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/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stddef.h>
#include <assert.h>
#include <libavcodec/avcodec.h>
#include <libavcodec/vdpau.h>
#include <libavutil/common.h>
#include "lavc.h"
#include "mpvcore/mp_common.h"
#include "mpvcore/av_common.h"
#include "video/fmt-conversion.h"
#include "video/vdpau.h"
#include "video/decode/dec_video.h"
struct priv {
struct mp_vdpau_ctx *mpvdp;
struct vdp_functions *vdp;
VdpDevice vdp_device;
uint64_t preemption_counter;
AVVDPAUContext context;
int vid_width;
int vid_height;
};
struct profile_entry {
enum AVCodecID av_codec;
VdpDecoderProfile vdp_profile;
int maxrefs;
};
#define PE(av_codec_id, vdp_dcoder_profile, maxrefs) \
{AV_CODEC_ID_ ## av_codec_id, \
VDP_DECODER_PROFILE_ ## vdp_dcoder_profile, \
maxrefs}
static const struct profile_entry profiles[] = {
PE(MPEG1VIDEO, MPEG1, 2),
PE(MPEG2VIDEO, MPEG2_MAIN, 2),
PE(H264, H264_HIGH, 16),
PE(WMV3, VC1_MAIN, 2),
PE(VC1, VC1_ADVANCED, 2),
PE(MPEG4, MPEG4_PART2_ASP,2),
};
// libavcodec absolutely wants a non-NULL render callback
static VdpStatus dummy_render(
VdpDecoder decoder,
VdpVideoSurface target,
VdpPictureInfo const * picture_info,
uint32_t bitstream_buffer_count,
VdpBitstreamBuffer const * bitstream_buffers)
{
return VDP_STATUS_DISPLAY_PREEMPTED;
}
static void mark_uninitialized(struct lavc_ctx *ctx)
{
struct priv *p = ctx->hwdec_priv;
p->vdp_device = VDP_INVALID_HANDLE;
p->context.decoder = VDP_INVALID_HANDLE;
p->context.render = dummy_render;
}
static int handle_preemption(struct lavc_ctx *ctx)
{
struct priv *p = ctx->hwdec_priv;
if (!mp_vdpau_status_ok(p->mpvdp))
return -1;
// Mark objects as destroyed if preemption+reinit occured
if (p->preemption_counter < p->mpvdp->preemption_counter) {
p->preemption_counter = p->mpvdp->preemption_counter;
mark_uninitialized(ctx);
}
p->vdp_device = p->mpvdp->vdp_device;
p->vdp = p->mpvdp->vdp;
return 0;
}
static const struct profile_entry *find_codec(enum AVCodecID id)
{
for (int n = 0; n < MP_ARRAY_SIZE(profiles); n++) {
if (profiles[n].av_codec == id)
return &profiles[n];
}
return NULL;
}
static bool create_vdp_decoder(struct lavc_ctx *ctx)
{
struct priv *p = ctx->hwdec_priv;
struct vdp_functions *vdp = p->mpvdp->vdp;
VdpStatus vdp_st;
if (handle_preemption(ctx) < 0)
return false;
if (p->context.decoder != VDP_INVALID_HANDLE)
vdp->decoder_destroy(p->context.decoder);
const struct profile_entry *pe = find_codec(ctx->avctx->codec_id);
if (!pe) {
mp_msg(MSGT_VO, MSGL_ERR, "[vdpau] Unknown codec!\n");
goto fail;
}
vdp_st = vdp->decoder_create(p->vdp_device, pe->vdp_profile,
p->vid_width, p->vid_height, pe->maxrefs,
&p->context.decoder);
CHECK_ST_WARNING("Failed creating VDPAU decoder");
p->context.render = p->vdp->decoder_render;
if (vdp_st != VDP_STATUS_OK)
goto fail;
return true;
fail:
p->context.decoder = VDP_INVALID_HANDLE;
p->context.render = dummy_render;
return false;
}
static struct mp_image *allocate_image(struct lavc_ctx *ctx, int fmt,
int w, int h)
{
struct priv *p = ctx->hwdec_priv;
if (fmt != IMGFMT_VDPAU)
return NULL;
handle_preemption(ctx);
if (w != p->vid_width || h != p->vid_height ||
p->context.decoder == VDP_INVALID_HANDLE)
{
p->vid_width = w;
p->vid_height = h;
if (!create_vdp_decoder(ctx))
return NULL;
}
VdpChromaType chroma;
mp_vdpau_get_format(IMGFMT_VDPAU, &chroma, NULL);
return mp_vdpau_get_video_surface(p->mpvdp, IMGFMT_VDPAU, chroma, w, h);
}
static void uninit(struct lavc_ctx *ctx)
{
struct priv *p = ctx->hwdec_priv;
if (!p)
return;
if (p->context.decoder != VDP_INVALID_HANDLE)
p->vdp->decoder_destroy(p->context.decoder);
// Free bitstream buffers allocated by libavcodec
av_freep(&p->context.bitstream_buffers);
talloc_free(p);
ctx->hwdec_priv = NULL;
}
static int init(struct lavc_ctx *ctx)
{
struct priv *p = talloc_ptrtype(NULL, p);
*p = (struct priv) {
.mpvdp = ctx->hwdec_info->vdpau_ctx,
};
ctx->hwdec_priv = p;
p->preemption_counter = p->mpvdp->preemption_counter;
mark_uninitialized(ctx);
if (handle_preemption(ctx) < 0)
return -1;
ctx->avctx->hwaccel_context = &p->context;
return 0;
}
static int probe(struct vd_lavc_hwdec *hwdec, struct mp_hwdec_info *info,
const char *decoder)
{
if (!info || !info->vdpau_ctx)
return HWDEC_ERR_NO_CTX;
if (!find_codec(mp_codec_to_av_codec_id(decoder)))
return HWDEC_ERR_NO_CODEC;
return 0;
}
const struct vd_lavc_hwdec mp_vd_lavc_vdpau = {
.type = HWDEC_VDPAU,
.image_formats = (const int[]) {IMGFMT_VDPAU, 0},
.probe = probe,
.init = init,
.uninit = uninit,
.allocate_image = allocate_image,
};
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