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ffmpeg/libavutil/hwcontext_vdpau.c

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/*
* 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 <stdint.h>
#include <string.h>
#include <vdpau/vdpau.h>
#include "buffer.h"
#include "common.h"
#include "hwcontext.h"
#include "hwcontext_internal.h"
#include "hwcontext_vdpau.h"
#include "mem.h"
#include "pixfmt.h"
#include "pixdesc.h"
typedef struct VDPAUDeviceContext {
VdpVideoSurfaceQueryGetPutBitsYCbCrCapabilities *get_transfer_caps;
VdpVideoSurfaceGetBitsYCbCr *get_data;
VdpVideoSurfacePutBitsYCbCr *put_data;
VdpVideoSurfaceCreate *surf_create;
VdpVideoSurfaceDestroy *surf_destroy;
enum AVPixelFormat *pix_fmts[3];
int nb_pix_fmts[3];
} VDPAUDeviceContext;
typedef struct VDPAUFramesContext {
VdpVideoSurfaceGetBitsYCbCr *get_data;
VdpVideoSurfacePutBitsYCbCr *put_data;
VdpChromaType chroma_type;
int chroma_idx;
const enum AVPixelFormat *pix_fmts;
int nb_pix_fmts;
} VDPAUFramesContext;
typedef struct VDPAUPixFmtMap {
VdpYCbCrFormat vdpau_fmt;
enum AVPixelFormat pix_fmt;
} VDPAUPixFmtMap;
static const VDPAUPixFmtMap pix_fmts_420[] = {
{ VDP_YCBCR_FORMAT_NV12, AV_PIX_FMT_NV12 },
{ VDP_YCBCR_FORMAT_YV12, AV_PIX_FMT_YUV420P },
{ 0, AV_PIX_FMT_NONE, },
};
static const VDPAUPixFmtMap pix_fmts_422[] = {
{ VDP_YCBCR_FORMAT_NV12, AV_PIX_FMT_NV16 },
{ VDP_YCBCR_FORMAT_YV12, AV_PIX_FMT_YUV422P },
{ VDP_YCBCR_FORMAT_UYVY, AV_PIX_FMT_UYVY422 },
{ VDP_YCBCR_FORMAT_YUYV, AV_PIX_FMT_YUYV422 },
{ 0, AV_PIX_FMT_NONE, },
};
static const VDPAUPixFmtMap pix_fmts_444[] = {
{ VDP_YCBCR_FORMAT_YV12, AV_PIX_FMT_YUV444P },
{ 0, AV_PIX_FMT_NONE, },
};
static const struct {
VdpChromaType chroma_type;
const VDPAUPixFmtMap *map;
} vdpau_pix_fmts[] = {
{ VDP_CHROMA_TYPE_420, pix_fmts_420 },
{ VDP_CHROMA_TYPE_422, pix_fmts_422 },
{ VDP_CHROMA_TYPE_444, pix_fmts_444 },
};
static int count_pixfmts(const VDPAUPixFmtMap *map)
{
int count = 0;
while (map->pix_fmt != AV_PIX_FMT_NONE) {
map++;
count++;
}
return count;
}
static int vdpau_init_pixmfts(AVHWDeviceContext *ctx)
{
AVVDPAUDeviceContext *hwctx = ctx->hwctx;
VDPAUDeviceContext *priv = ctx->internal->priv;
int i;
for (i = 0; i < FF_ARRAY_ELEMS(priv->pix_fmts); i++) {
const VDPAUPixFmtMap *map = vdpau_pix_fmts[i].map;
int nb_pix_fmts;
nb_pix_fmts = count_pixfmts(map);
priv->pix_fmts[i] = av_malloc_array(nb_pix_fmts + 1, sizeof(*priv->pix_fmts[i]));
if (!priv->pix_fmts[i])
return AVERROR(ENOMEM);
nb_pix_fmts = 0;
while (map->pix_fmt != AV_PIX_FMT_NONE) {
VdpBool supported;
VdpStatus err = priv->get_transfer_caps(hwctx->device, vdpau_pix_fmts[i].chroma_type,
map->vdpau_fmt, &supported);
if (err == VDP_STATUS_OK && supported)
priv->pix_fmts[i][nb_pix_fmts++] = map->pix_fmt;
map++;
}
priv->pix_fmts[i][nb_pix_fmts++] = AV_PIX_FMT_NONE;
priv->nb_pix_fmts[i] = nb_pix_fmts;
}
return 0;
}
static int vdpau_device_init(AVHWDeviceContext *ctx)
{
AVVDPAUDeviceContext *hwctx = ctx->hwctx;
VDPAUDeviceContext *priv = ctx->internal->priv;
VdpStatus err;
int ret;
#define GET_CALLBACK(id, result) \
do { \
void *tmp; \
err = hwctx->get_proc_address(hwctx->device, id, &tmp); \
if (err != VDP_STATUS_OK) { \
av_log(ctx, AV_LOG_ERROR, "Error getting the " #id " callback.\n"); \
return AVERROR_UNKNOWN; \
} \
priv->result = tmp; \
} while (0)
GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_QUERY_GET_PUT_BITS_Y_CB_CR_CAPABILITIES,
get_transfer_caps);
GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_GET_BITS_Y_CB_CR, get_data);
GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_PUT_BITS_Y_CB_CR, put_data);
GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_CREATE, surf_create);
GET_CALLBACK(VDP_FUNC_ID_VIDEO_SURFACE_DESTROY, surf_destroy);
ret = vdpau_init_pixmfts(ctx);
if (ret < 0) {
av_log(ctx, AV_LOG_ERROR, "Error querying the supported pixel formats\n");
return ret;
}
return 0;
}
static void vdpau_device_uninit(AVHWDeviceContext *ctx)
{
VDPAUDeviceContext *priv = ctx->internal->priv;
int i;
for (i = 0; i < FF_ARRAY_ELEMS(priv->pix_fmts); i++)
av_freep(&priv->pix_fmts[i]);
}
static void vdpau_buffer_free(void *opaque, uint8_t *data)
{
AVHWFramesContext *ctx = opaque;
VDPAUDeviceContext *device_priv = ctx->device_ctx->internal->priv;
VdpVideoSurface surf = (VdpVideoSurface)(uintptr_t)data;
device_priv->surf_destroy(surf);
}
static AVBufferRef *vdpau_pool_alloc(void *opaque, int size)
{
AVHWFramesContext *ctx = opaque;
VDPAUFramesContext *priv = ctx->internal->priv;
AVVDPAUDeviceContext *device_hwctx = ctx->device_ctx->hwctx;
VDPAUDeviceContext *device_priv = ctx->device_ctx->internal->priv;
AVBufferRef *ret;
VdpVideoSurface surf;
VdpStatus err;
err = device_priv->surf_create(device_hwctx->device, priv->chroma_type,
ctx->width, ctx->height, &surf);
if (err != VDP_STATUS_OK) {
av_log(ctx, AV_LOG_ERROR, "Error allocating a VDPAU video surface\n");
return NULL;
}
ret = av_buffer_create((uint8_t*)(uintptr_t)surf, sizeof(surf),
vdpau_buffer_free, ctx, AV_BUFFER_FLAG_READONLY);
if (!ret) {
device_priv->surf_destroy(surf);
return NULL;
}
return ret;
}
static int vdpau_frames_init(AVHWFramesContext *ctx)
{
VDPAUDeviceContext *device_priv = ctx->device_ctx->internal->priv;
VDPAUFramesContext *priv = ctx->internal->priv;
int i;
switch (ctx->sw_format) {
case AV_PIX_FMT_YUV420P: priv->chroma_type = VDP_CHROMA_TYPE_420; break;
case AV_PIX_FMT_YUV422P: priv->chroma_type = VDP_CHROMA_TYPE_422; break;
case AV_PIX_FMT_YUV444P: priv->chroma_type = VDP_CHROMA_TYPE_444; break;
default:
av_log(ctx, AV_LOG_ERROR, "Unsupported data layout: %s\n",
av_get_pix_fmt_name(ctx->sw_format));
return AVERROR(ENOSYS);
}
for (i = 0; i < FF_ARRAY_ELEMS(vdpau_pix_fmts); i++) {
if (vdpau_pix_fmts[i].chroma_type == priv->chroma_type) {
priv->chroma_idx = i;
priv->pix_fmts = device_priv->pix_fmts[i];
priv->nb_pix_fmts = device_priv->nb_pix_fmts[i];
break;
}
}
if (!priv->pix_fmts) {
av_log(ctx, AV_LOG_ERROR, "Unsupported chroma type: %d\n", priv->chroma_type);
return AVERROR(ENOSYS);
}
if (!ctx->pool) {
ctx->internal->pool_internal = av_buffer_pool_init2(sizeof(VdpVideoSurface), ctx,
vdpau_pool_alloc, NULL);
if (!ctx->internal->pool_internal)
return AVERROR(ENOMEM);
}
priv->get_data = device_priv->get_data;
priv->put_data = device_priv->put_data;
return 0;
}
static int vdpau_get_buffer(AVHWFramesContext *ctx, AVFrame *frame)
{
frame->buf[0] = av_buffer_pool_get(ctx->pool);
if (!frame->buf[0])
return AVERROR(ENOMEM);
frame->data[3] = frame->buf[0]->data;
frame->format = AV_PIX_FMT_VDPAU;
frame->width = ctx->width;
frame->height = ctx->height;
return 0;
}
static int vdpau_transfer_get_formats(AVHWFramesContext *ctx,
enum AVHWFrameTransferDirection dir,
enum AVPixelFormat **formats)
{
VDPAUFramesContext *priv = ctx->internal->priv;
enum AVPixelFormat *fmts;
if (priv->nb_pix_fmts == 1) {
av_log(ctx, AV_LOG_ERROR,
"No target formats are supported for this chroma type\n");
return AVERROR(ENOSYS);
}
fmts = av_malloc_array(priv->nb_pix_fmts, sizeof(*fmts));
if (!fmts)
return AVERROR(ENOMEM);
memcpy(fmts, priv->pix_fmts, sizeof(*fmts) * (priv->nb_pix_fmts));
*formats = fmts;
return 0;
}
static int vdpau_transfer_data_from(AVHWFramesContext *ctx, AVFrame *dst,
const AVFrame *src)
{
VDPAUFramesContext *priv = ctx->internal->priv;
VdpVideoSurface surf = (VdpVideoSurface)(uintptr_t)src->data[3];
void *data[3];
uint32_t linesize[3];
const VDPAUPixFmtMap *map;
VdpYCbCrFormat vdpau_format;
VdpStatus err;
int i;
for (i = 0; i< FF_ARRAY_ELEMS(data) && dst->data[i]; i++) {
data[i] = dst->data[i];
if (dst->linesize[i] < 0 || (uint64_t)dst->linesize > UINT32_MAX) {
av_log(ctx, AV_LOG_ERROR,
"The linesize %d cannot be represented as uint32\n",
dst->linesize[i]);
return AVERROR(ERANGE);
}
linesize[i] = dst->linesize[i];
}
map = vdpau_pix_fmts[priv->chroma_idx].map;
for (i = 0; map[i].pix_fmt != AV_PIX_FMT_NONE; i++) {
if (map[i].pix_fmt == dst->format) {
vdpau_format = map[i].vdpau_fmt;
break;
}
}
if (map[i].pix_fmt == AV_PIX_FMT_NONE) {
av_log(ctx, AV_LOG_ERROR,
"Unsupported target pixel format: %s\n",
av_get_pix_fmt_name(dst->format));
return AVERROR(EINVAL);
}
if (vdpau_format == VDP_YCBCR_FORMAT_YV12)
FFSWAP(void*, data[1], data[2]);
err = priv->get_data(surf, vdpau_format, data, linesize);
if (err != VDP_STATUS_OK) {
av_log(ctx, AV_LOG_ERROR, "Error retrieving the data from a VDPAU surface\n");
return AVERROR_UNKNOWN;
}
return 0;
}
static int vdpau_transfer_data_to(AVHWFramesContext *ctx, AVFrame *dst,
const AVFrame *src)
{
VDPAUFramesContext *priv = ctx->internal->priv;
VdpVideoSurface surf = (VdpVideoSurface)(uintptr_t)dst->data[3];
const void *data[3];
uint32_t linesize[3];
const VDPAUPixFmtMap *map;
VdpYCbCrFormat vdpau_format;
VdpStatus err;
int i;
for (i = 0; i< FF_ARRAY_ELEMS(data) && src->data[i]; i++) {
data[i] = src->data[i];
if (src->linesize[i] < 0 || (uint64_t)src->linesize > UINT32_MAX) {
av_log(ctx, AV_LOG_ERROR,
"The linesize %d cannot be represented as uint32\n",
src->linesize[i]);
return AVERROR(ERANGE);
}
linesize[i] = src->linesize[i];
}
map = vdpau_pix_fmts[priv->chroma_idx].map;
for (i = 0; map[i].pix_fmt != AV_PIX_FMT_NONE; i++) {
if (map[i].pix_fmt == src->format) {
vdpau_format = map[i].vdpau_fmt;
break;
}
}
if (map[i].pix_fmt == AV_PIX_FMT_NONE) {
av_log(ctx, AV_LOG_ERROR,
"Unsupported source pixel format: %s\n",
av_get_pix_fmt_name(src->format));
return AVERROR(EINVAL);
}
if (vdpau_format == VDP_YCBCR_FORMAT_YV12)
FFSWAP(const void*, data[1], data[2]);
err = priv->put_data(surf, vdpau_format, data, linesize);
if (err != VDP_STATUS_OK) {
av_log(ctx, AV_LOG_ERROR, "Error uploading the data to a VDPAU surface\n");
return AVERROR_UNKNOWN;
}
return 0;
}
const HWContextType ff_hwcontext_type_vdpau = {
.type = AV_HWDEVICE_TYPE_VDPAU,
.name = "VDPAU",
.device_hwctx_size = sizeof(AVVDPAUDeviceContext),
.device_priv_size = sizeof(VDPAUDeviceContext),
.frames_priv_size = sizeof(VDPAUFramesContext),
.device_init = vdpau_device_init,
.device_uninit = vdpau_device_uninit,
.frames_init = vdpau_frames_init,
.frames_get_buffer = vdpau_get_buffer,
.transfer_get_formats = vdpau_transfer_get_formats,
.transfer_data_to = vdpau_transfer_data_to,
.transfer_data_from = vdpau_transfer_data_from,
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_VDPAU, AV_PIX_FMT_NONE },
};
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