ImagePtr VaapiImage::create(const DisplayPtr& display,
uint32_t format,
uint32_t width, uint32_t height)
{
ImagePtr image;
VAStatus status;
if (!display || !width || !height)
return image;
DEBUG_FOURCC("create image with fourcc: ", format);
const VAImageFormat *vaFormat = display->getVaFormat(format);
if (!vaFormat) {
ERROR("Create image failed, not supported fourcc");
return image;
}
VAImagePtr vaImage(new VAImage);
status = vaCreateImage(display->getID(), vaFormat, width, height, vaImage.get());
if (status != VA_STATUS_SUCCESS ||
vaImage->format.fourcc != vaFormat->fourcc) {
ERROR("fourcc mismatch wated = 0x%x, got = 0x%x", vaFormat->fourcc, vaImage->format.fourcc);
return image;
}
image.reset(new VaapiImage(display, vaImage));
return image;
}
void* SurfaceInteropVAAPI::mapToHost(const VideoFormat &format, void *handle, int plane)
{
Q_UNUSED(plane);
int nb_fmts = vaMaxNumImageFormats(m_surface->vadisplay());
//av_mallocz_array
VAImageFormat *p_fmt = (VAImageFormat*)calloc(nb_fmts, sizeof(*p_fmt));
if (!p_fmt) {
return NULL;
}
if (vaQueryImageFormats(m_surface->vadisplay(), p_fmt, &nb_fmts)) {
free(p_fmt);
return NULL;
}
VAImage image;
for (int i = 0; i < nb_fmts; i++) {
if (p_fmt[i].fourcc == VA_FOURCC_YV12 ||
p_fmt[i].fourcc == VA_FOURCC_IYUV ||
p_fmt[i].fourcc == VA_FOURCC_NV12) {
qDebug("vaCreateImage: %c%c%c%c", p_fmt[i].fourcc<<24>>24, p_fmt[i].fourcc<<16>>24, p_fmt[i].fourcc<<8>>24, p_fmt[i].fourcc>>24);
if (vaCreateImage(m_surface->vadisplay(), &p_fmt[i], m_surface->width(), m_surface->height(), &image) != VA_STATUS_SUCCESS) {
image.image_id = VA_INVALID_ID;
qDebug("vaCreateImage error: %c%c%c%c", p_fmt[i].fourcc<<24>>24, p_fmt[i].fourcc<<16>>24, p_fmt[i].fourcc<<8>>24, p_fmt[i].fourcc>>24);
continue;
}
/* Validate that vaGetImage works with this format */
if (vaGetImage(m_surface->vadisplay(), m_surface->get(), 0, 0, m_surface->width(), m_surface->height(), image.image_id) != VA_STATUS_SUCCESS) {
vaDestroyImage(m_surface->vadisplay(), image.image_id);
qDebug("vaGetImage error: %c%c%c%c", p_fmt[i].fourcc<<24>>24, p_fmt[i].fourcc<<16>>24, p_fmt[i].fourcc<<8>>24, p_fmt[i].fourcc>>24);
image.image_id = VA_INVALID_ID;
continue;
}
static gboolean
_gst_vaapi_image_create(GstVaapiImage *image, GstVaapiImageFormat format)
{
GstVaapiDisplay * const display = GST_VAAPI_OBJECT_DISPLAY(image);
GstVaapiImagePrivate * const priv = image->priv;
const VAImageFormat *va_format;
VAStatus status;
if (!gst_vaapi_display_has_image_format(display, format))
return FALSE;
va_format = gst_vaapi_image_format_get_va_format(format);
if (!va_format)
return FALSE;
GST_VAAPI_DISPLAY_LOCK(display);
status = vaCreateImage(
GST_VAAPI_DISPLAY_VADISPLAY(display),
(VAImageFormat *)va_format,
priv->width,
priv->height,
&priv->internal_image
);
GST_VAAPI_DISPLAY_UNLOCK(display);
if (status != VA_STATUS_SUCCESS ||
priv->internal_image.format.fourcc != va_format->fourcc)
return FALSE;
priv->internal_format = format;
return TRUE;
}
int csc_preparation ()
{
VAStatus va_status;
// 1. make sure dst fourcc is supported for vaImage
if (!lookup_image_format(csc_dst_fourcc)) {
test_color_conversion = 0;
printf("VA driver doesn't support %s image, skip additional color conversion\n", map_vafourcc_to_str(csc_dst_fourcc));
goto cleanup;
}
// 2. make sure src_fourcc is supported for vaSurface
VASurfaceAttrib surface_attribs[1], * const s_attrib = &surface_attribs[0];
s_attrib->type = VASurfaceAttribPixelFormat;
s_attrib->flags = VA_SURFACE_ATTRIB_SETTABLE;
s_attrib->value.type = VAGenericValueTypeInteger;
s_attrib->value.value.i = csc_src_fourcc;
if (!lookup_surface_attrib(VASurfaceAttribPixelFormat, &s_attrib->value)) {
printf("VA driver doesn't support %s surface, skip additional color conversion\n", map_vafourcc_to_str(csc_src_fourcc));
test_color_conversion = 0;
goto cleanup;
}
// 3 create all objs required by csc
// 3.1 vaSurface with src fourcc
va_status = vaCreateSurfaces(
va_dpy,
VA_RT_FORMAT_YUV420, surface_width, surface_height,
&surface_id[0], SURFACE_NUM,
surface_attribs, 1
);
CHECK_VASTATUS(va_status,"vaCreateSurfaces");
// 3.2 vaImage with dst fourcc
VAImageFormat image_format;
image_format.fourcc = csc_dst_fourcc;
image_format.byte_order = VA_LSB_FIRST;
image_format.bits_per_pixel = 16;
va_status = vaCreateImage(va_dpy, &image_format,
surface_width, surface_height,
&csc_dst_fourcc_image);
CHECK_VASTATUS(va_status,"vaCreateImage");
// 3.3 create a temp VASurface for final rendering(vaPutSurface)
s_attrib->value.value.i = VA_FOURCC_NV12;
va_status = vaCreateSurfaces(va_dpy, VA_RT_FORMAT_YUV420,
surface_width, surface_height,
&csc_render_surface, 1,
surface_attribs, 1);
CHECK_VASTATUS(va_status,"vaCreateSurfaces");
cleanup:
return test_color_conversion;
}
void VAApiWriter::draw( VASurfaceID _id, int _field )
{
if ( _id != VA_INVALID_SURFACE && _field > -1 )
{
if ( id != _id || _field == field )
vaSyncSurface( VADisp, _id );
id = _id;
field = _field;
}
if ( id == VA_INVALID_SURFACE )
return;
bool associated = false;
osd_mutex.lock();
if ( !osd_list.isEmpty() )
{
QRect bounds;
const qreal scaleW = ( qreal )W / outW, scaleH = ( qreal )H / outH;
bool mustRepaint = Functions::mustRepaintOSD( osd_list, osd_checksums, &scaleW, &scaleH, &bounds );
if ( !mustRepaint )
mustRepaint = vaImgSize != bounds.size();
bool canAssociate = !mustRepaint;
if ( mustRepaint )
{
if ( vaImgSize != bounds.size() )
{
clearRGBImage();
vaImgSize = QSize();
if ( vaCreateImage( VADisp, rgbImgFmt, bounds.width(), bounds.height(), &vaImg ) == VA_STATUS_SUCCESS )
{
if ( vaCreateSubpicture( VADisp, vaImg.image_id, &vaSubpicID ) == VA_STATUS_SUCCESS )
vaImgSize = bounds.size();
else
clearRGBImage();
}
}
if ( vaSubpicID )
{
quint8 *buff;
if ( vaMapBuffer( VADisp, vaImg.buf, ( void ** )&buff ) == VA_STATUS_SUCCESS )
{
QImage osdImg( buff += vaImg.offsets[ 0 ], vaImg.pitches[ 0 ] >> 2, bounds.height(), QImage::Format_ARGB32 );
osdImg.fill( 0 );
QPainter p( &osdImg );
p.translate( -bounds.topLeft() );
Functions::paintOSD( osd_list, scaleW, scaleH, p, &osd_checksums );
vaUnmapBuffer( VADisp, vaImg.buf );
canAssociate = true;
}
}
}
bool EglVaapiImage::init()
{
if (m_inited) {
ERROR("do not init twice");
return false;
}
if (!getVaFormat(m_display, m_format))
return false;
VAStatus vaStatus = vaCreateImage(m_display, &m_format, m_width, m_height, &m_image);
if (!checkVaapiStatus(vaStatus, "vaCreateImage"))
return false;
m_inited = true;
return true;
}
quint8 *VAApiWriter::getImage( VAImage &image, VASurfaceID surfaceID, VAImageFormat *img_fmt ) const
{
if ( vaCreateImage( VADisp, img_fmt, outW, outH, &image ) == VA_STATUS_SUCCESS )
{
quint8 *data;
if
(
vaSyncSurface( VADisp, surfaceID ) == VA_STATUS_SUCCESS &&
vaGetImage( VADisp, surfaceID, 0, 0, outW, outH, image.image_id ) == VA_STATUS_SUCCESS &&
vaMapBuffer( VADisp, image.buf, ( void ** )&data ) == VA_STATUS_SUCCESS
) return data;
vaDestroyImage( VADisp, image.image_id );
}
return NULL;
}
static int CreateSurfaces( vlc_va_vaapi_t *p_va, void **pp_hw_ctx, vlc_fourcc_t *pi_chroma,
int i_width, int i_height )
{
assert( i_width > 0 && i_height > 0 );
/* */
p_va->p_surface = calloc( p_va->i_surface_count, sizeof(*p_va->p_surface) );
if( !p_va->p_surface )
return VLC_EGENERIC;
p_va->image.image_id = VA_INVALID_ID;
p_va->i_context_id = VA_INVALID_ID;
/* Create surfaces */
VASurfaceID pi_surface_id[p_va->i_surface_count];
if( vaCreateSurfaces( p_va->p_display, i_width, i_height, VA_RT_FORMAT_YUV420,
p_va->i_surface_count, pi_surface_id ) )
{
for( int i = 0; i < p_va->i_surface_count; i++ )
p_va->p_surface[i].i_id = VA_INVALID_SURFACE;
goto error;
}
for( int i = 0; i < p_va->i_surface_count; i++ )
{
vlc_va_surface_t *p_surface = &p_va->p_surface[i];
p_surface->i_id = pi_surface_id[i];
p_surface->i_refcount = 0;
p_surface->i_order = 0;
}
/* Create a context */
if( vaCreateContext( p_va->p_display, p_va->i_config_id,
i_width, i_height, VA_PROGRESSIVE,
pi_surface_id, p_va->i_surface_count, &p_va->i_context_id ) )
{
p_va->i_context_id = VA_INVALID_ID;
goto error;
}
/* Find and create a supported image chroma */
int i_fmt_count = vaMaxNumImageFormats( p_va->p_display );
VAImageFormat *p_fmt = calloc( i_fmt_count, sizeof(*p_fmt) );
if( !p_fmt )
goto error;
if( vaQueryImageFormats( p_va->p_display, p_fmt, &i_fmt_count ) )
{
free( p_fmt );
goto error;
}
VAImage testImage;
if(vaDeriveImage(p_va->p_display, pi_surface_id[0], &testImage) == VA_STATUS_SUCCESS)
{
p_va->b_supports_derive = true;
vaDestroyImage(p_va->p_display, testImage.image_id);
}
vlc_fourcc_t i_chroma = 0;
VAImageFormat fmt;
for( int i = 0; i < i_fmt_count; i++ )
{
if( p_fmt[i].fourcc == VA_FOURCC( 'Y', 'V', '1', '2' ) ||
p_fmt[i].fourcc == VA_FOURCC( 'I', '4', '2', '0' ) ||
p_fmt[i].fourcc == VA_FOURCC( 'N', 'V', '1', '2' ) )
{
if( vaCreateImage( p_va->p_display, &p_fmt[i], i_width, i_height, &p_va->image ) )
{
p_va->image.image_id = VA_INVALID_ID;
continue;
}
/* Validate that vaGetImage works with this format */
if( vaGetImage( p_va->p_display, pi_surface_id[0],
0, 0, i_width, i_height,
p_va->image.image_id) )
{
vaDestroyImage( p_va->p_display, p_va->image.image_id );
p_va->image.image_id = VA_INVALID_ID;
continue;
}
i_chroma = VLC_CODEC_YV12;
fmt = p_fmt[i];
break;
}
}
free( p_fmt );
if( !i_chroma )
goto error;
*pi_chroma = i_chroma;
if(p_va->b_supports_derive)
{
vaDestroyImage( p_va->p_display, p_va->image.image_id );
p_va->image.image_id = VA_INVALID_ID;
}
if( unlikely(CopyInitCache( &p_va->image_cache, i_width )) )
goto error;
/* Setup the ffmpeg hardware context */
*pp_hw_ctx = &p_va->hw_ctx;
memset( &p_va->hw_ctx, 0, sizeof(p_va->hw_ctx) );
p_va->hw_ctx.display = p_va->p_display;
p_va->hw_ctx.config_id = p_va->i_config_id;
p_va->hw_ctx.context_id = p_va->i_context_id;
/* */
p_va->i_surface_chroma = i_chroma;
p_va->i_surface_width = i_width;
p_va->i_surface_height = i_height;
return VLC_SUCCESS;
error:
DestroySurfaces( p_va );
return VLC_EGENERIC;
}
bool VAAPIContext::InitImage(const void *buf)
{
if (!buf)
return false;
if (!m_dispType == kVADisplayX11)
return true;
int num_formats = 0;
int max_formats = vaMaxNumImageFormats(m_ctx.display);
VAImageFormat *formats = new VAImageFormat[max_formats];
INIT_ST;
va_status = vaQueryImageFormats(m_ctx.display, formats, &num_formats);
CHECK_ST;
const vaapi_surface *surf = (vaapi_surface*)buf;
unsigned int deriveImageFormat = 0;
if (vaDeriveImage(m_ctx.display, surf->m_id, &m_image) == VA_STATUS_SUCCESS)
{
m_deriveSupport = true;
deriveImageFormat = m_image.format.fourcc;
vaDestroyImage(m_ctx.display, m_image.image_id);
}
int nv12support = -1;
for (int i = 0; i < num_formats; i++)
{
if (formats[i].fourcc == VA_FOURCC_YV12 ||
formats[i].fourcc == VA_FOURCC_IYUV ||
formats[i].fourcc == VA_FOURCC_NV12)
{
if (vaCreateImage(m_ctx.display, &formats[i],
m_size.width(), m_size.height(), &m_image))
{
m_image.image_id = VA_INVALID_ID;
continue;
}
if (vaGetImage(m_ctx.display, surf->m_id, 0, 0,
m_size.width(), m_size.height(), m_image.image_id))
{
vaDestroyImage(m_ctx.display, m_image.image_id);
m_image.image_id = VA_INVALID_ID;
continue;
}
if (formats[i].fourcc == VA_FOURCC_NV12)
{
// mark as NV12 as supported, but favor other formats first
nv12support = i;
vaDestroyImage(m_ctx.display, m_image.image_id);
m_image.image_id = VA_INVALID_ID;
continue;
}
break;
}
}
if (m_image.image_id == VA_INVALID_ID && nv12support >= 0)
{
// only nv12 is supported, use that format
if (vaCreateImage(m_ctx.display, &formats[nv12support],
m_size.width(), m_size.height(), &m_image))
{
m_image.image_id = VA_INVALID_ID;
}
}
else if (m_deriveSupport && deriveImageFormat != m_image.format.fourcc)
{
// only use vaDerive if it's giving us a format we can handle natively
m_deriveSupport = false;
}
delete [] formats;
if (m_image.image_id == VA_INVALID_ID)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "Failed to create software image.");
return false;
}
LOG(VB_GENERAL, LOG_DEBUG,
LOC + QString("InitImage: id %1, width %2 height %3 "
"format %4 vaDeriveSupport:%5")
.arg(m_image.image_id).arg(m_image.width).arg(m_image.height)
.arg(m_image.format.fourcc).arg(m_deriveSupport));
if (m_deriveSupport)
{
vaDestroyImage(m_ctx.display, m_image.image_id );
m_image.image_id = VA_INVALID_ID;
}
return true;
}
static int Extract( vlc_va_t *va, picture_t *p_picture, uint8_t *data )
{
vlc_va_sys_t *sys = va->sys;
VASurfaceID surface = (VASurfaceID)(uintptr_t)data;
VAImage image;
int ret = VLC_EGENERIC;
#if VA_CHECK_VERSION(0,31,0)
if (vaSyncSurface(sys->hw_ctx.display, surface))
#else
if (vaSyncSurface(sys->hw_ctx.display, sys->hw_ctx.context_id, surface))
#endif
return VLC_EGENERIC;
if (!sys->do_derive || vaDeriveImage(sys->hw_ctx.display, surface, &image))
{ /* Fallback if image derivation is not supported */
if (vaCreateImage(sys->hw_ctx.display, &sys->format, sys->width,
sys->height, &image))
return VLC_EGENERIC;
if (vaGetImage(sys->hw_ctx.display, surface, 0, 0, sys->width,
sys->height, image.image_id))
goto error;
}
void *p_base;
if (vaMapBuffer(sys->hw_ctx.display, image.buf, &p_base))
goto error;
const unsigned i_fourcc = sys->format.fourcc;
if( i_fourcc == VA_FOURCC_YV12 ||
i_fourcc == VA_FOURCC_IYUV )
{
bool b_swap_uv = i_fourcc == VA_FOURCC_IYUV;
uint8_t *pp_plane[3];
size_t pi_pitch[3];
for( int i = 0; i < 3; i++ )
{
const int i_src_plane = (b_swap_uv && i != 0) ? (3 - i) : i;
pp_plane[i] = (uint8_t*)p_base + image.offsets[i_src_plane];
pi_pitch[i] = image.pitches[i_src_plane];
}
CopyFromYv12( p_picture, pp_plane, pi_pitch, sys->width, sys->height,
&sys->image_cache );
}
else
{
assert( i_fourcc == VA_FOURCC_NV12 );
uint8_t *pp_plane[2];
size_t pi_pitch[2];
for( int i = 0; i < 2; i++ )
{
pp_plane[i] = (uint8_t*)p_base + image.offsets[i];
pi_pitch[i] = image.pitches[i];
}
CopyFromNv12( p_picture, pp_plane, pi_pitch, sys->width, sys->height,
&sys->image_cache );
}
vaUnmapBuffer(sys->hw_ctx.display, image.buf);
ret = VLC_SUCCESS;
error:
vaDestroyImage(sys->hw_ctx.display, image.image_id);
return ret;
}
/** Finds a supported image chroma */
static int FindFormat(vlc_va_sys_t *sys)
{
int count = vaMaxNumImageFormats(sys->hw_ctx.display);
VAImageFormat *fmts = malloc(count * sizeof (*fmts));
if (unlikely(fmts == NULL))
return VLC_ENOMEM;
if (vaQueryImageFormats(sys->hw_ctx.display, fmts, &count))
{
free(fmts);
return VLC_EGENERIC;
}
sys->format.fourcc = 0;
for (int i = 0; i < count; i++)
{
unsigned fourcc = fmts[i].fourcc;
if (fourcc != VA_FOURCC_YV12 && fourcc != VA_FOURCC_IYUV
&& fourcc != VA_FOURCC_NV12)
continue;
VAImage image;
if (vaCreateImage(sys->hw_ctx.display, &fmts[i], sys->width,
sys->height, &image))
continue;
/* Validate that vaGetImage works with this format */
int val = vaGetImage(sys->hw_ctx.display, sys->surfaces[0], 0, 0,
sys->width, sys->height, image.image_id);
vaDestroyImage(sys->hw_ctx.display, image.image_id);
if (val != VA_STATUS_SUCCESS)
continue;
/* Mark NV12 as supported, but favor other formats first */
sys->format = fmts[i];
if (fourcc != VA_FOURCC_NV12)
break;
}
free(fmts);
if (sys->format.fourcc == 0)
return VLC_EGENERIC; /* None of the formats work */
VAImage image;
/* Use vaDerive() iif it supports the best selected format */
sys->do_derive = false;
if (vaDeriveImage(sys->hw_ctx.display, sys->surfaces[0],
&image) == VA_STATUS_SUCCESS)
{
if (image.format.fourcc == sys->format.fourcc)
{
sys->do_derive = true;
sys->format = image.format;
}
vaDestroyImage(sys->hw_ctx.display, image.image_id);
}
return VLC_SUCCESS;
}
int get_image(VASurfaceID surface, Image *dst_img)
{
VAAPIContext * const vaapi = vaapi_get_context();
VAImage image;
VAImageFormat *image_format = NULL;
VAStatus status;
Image bound_image;
int i, is_bound_image = 0, is_derived_image = 0, error = -1;
image.image_id = VA_INVALID_ID;
image.buf = VA_INVALID_ID;
if (!image_format) {
status = vaDeriveImage(vaapi->display, surface, &image);
if (vaapi_check_status(status, "vaDeriveImage()")) {
if (image.image_id != VA_INVALID_ID && image.buf != VA_INVALID_ID) {
D(bug("using vaDeriveImage()\n"));
is_derived_image = 1;
image_format = &image.format;
}
else {
D(bug("vaDeriveImage() returned success but VA image is invalid. Trying vaGetImage()\n"));
}
}
}
if (!image_format) {
for (i = 0; image_formats[i] != 0; i++) {
if (get_image_format(vaapi, image_formats[i], &image_format))
break;
}
}
if (!image_format)
goto end;
D(bug("selected %s image format for getimage\n",
string_of_VAImageFormat(image_format)));
if (!is_derived_image) {
status = vaCreateImage(vaapi->display, image_format,
vaapi->picture_width, vaapi->picture_height,
&image);
if (!vaapi_check_status(status, "vaCreateImage()"))
goto end;
D(bug("created image with id 0x%08x and buffer id 0x%08x\n",
image.image_id, image.buf));
VARectangle src_rect;
src_rect.x = 0;
src_rect.y = 0;
src_rect.width = vaapi->picture_width;
src_rect.height = vaapi->picture_height;
D(bug("src rect (%d,%d):%ux%u\n",
src_rect.x, src_rect.y, src_rect.width, src_rect.height));
status = vaGetImage(
vaapi->display, vaapi->surface_id,
src_rect.x, src_rect.y, src_rect.width, src_rect.height,
image.image_id
);
if (!vaapi_check_status(status, "vaGetImage()")) {
vaDestroyImage(vaapi->display, image.image_id);
goto end;
}
}
if (bind_image(&image, &bound_image) < 0)
goto end;
is_bound_image = 1;
if (image_convert(dst_img, &bound_image) < 0)
goto end;
error = 0;
end:
if (is_bound_image) {
if (release_image(&image) < 0)
error = -1;
}
if (image.image_id != VA_INVALID_ID) {
status = vaDestroyImage(vaapi->display, image.image_id);
if (!vaapi_check_status(status, "vaDestroyImage()"))
error = -1;
}
return error;
}
static int vaapi_map_frame(AVHWFramesContext *hwfc,
AVFrame *dst, const AVFrame *src, int flags)
{
AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
VAAPIFramesContext *ctx = hwfc->internal->priv;
VASurfaceID surface_id;
VAImageFormat *image_format;
VAAPISurfaceMap *map;
VAStatus vas;
void *address = NULL;
int err, i;
surface_id = (VASurfaceID)(uintptr_t)src->data[3];
av_log(hwfc, AV_LOG_DEBUG, "Map surface %#x.\n", surface_id);
if (!ctx->derive_works && (flags & VAAPI_MAP_DIRECT)) {
// Requested direct mapping but it is not possible.
return AVERROR(EINVAL);
}
if (dst->format == AV_PIX_FMT_NONE)
dst->format = hwfc->sw_format;
if (dst->format != hwfc->sw_format && (flags & VAAPI_MAP_DIRECT)) {
// Requested direct mapping but the formats do not match.
return AVERROR(EINVAL);
}
err = vaapi_get_image_format(hwfc->device_ctx, dst->format, &image_format);
if (err < 0) {
// Requested format is not a valid output format.
return AVERROR(EINVAL);
}
map = av_malloc(sizeof(VAAPISurfaceMap));
if (!map)
return AVERROR(ENOMEM);
map->source = src;
map->flags = flags;
map->image.image_id = VA_INVALID_ID;
vas = vaSyncSurface(hwctx->display, surface_id);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to sync surface "
"%#x: %d (%s).\n", surface_id, vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
// The memory which we map using derive need not be connected to the CPU
// in a way conducive to fast access. On Gen7-Gen9 Intel graphics, the
// memory is mappable but not cached, so normal memcpy()-like access is
// very slow to read it (but writing is ok). It is possible to read much
// faster with a copy routine which is aware of the limitation, but we
// assume for now that the user is not aware of that and would therefore
// prefer not to be given direct-mapped memory if they request read access.
if (ctx->derive_works &&
((flags & VAAPI_MAP_DIRECT) || !(flags & VAAPI_MAP_READ))) {
vas = vaDeriveImage(hwctx->display, surface_id, &map->image);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to derive image from "
"surface %#x: %d (%s).\n",
surface_id, vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
if (map->image.format.fourcc != image_format->fourcc) {
av_log(hwfc, AV_LOG_ERROR, "Derive image of surface %#x "
"is in wrong format: expected %#08x, got %#08x.\n",
surface_id, image_format->fourcc, map->image.format.fourcc);
err = AVERROR(EIO);
goto fail;
}
map->flags |= VAAPI_MAP_DIRECT;
} else {
vas = vaCreateImage(hwctx->display, image_format,
hwfc->width, hwfc->height, &map->image);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to create image for "
"surface %#x: %d (%s).\n",
surface_id, vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
if (flags & VAAPI_MAP_READ) {
vas = vaGetImage(hwctx->display, surface_id, 0, 0,
hwfc->width, hwfc->height, map->image.image_id);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to read image from "
"surface %#x: %d (%s).\n",
surface_id, vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
}
}
vas = vaMapBuffer(hwctx->display, map->image.buf, &address);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to map image from surface "
"%#x: %d (%s).\n", surface_id, vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
dst->width = src->width;
dst->height = src->height;
for (i = 0; i < map->image.num_planes; i++) {
dst->data[i] = (uint8_t*)address + map->image.offsets[i];
dst->linesize[i] = map->image.pitches[i];
}
if (
#ifdef VA_FOURCC_YV16
map->image.format.fourcc == VA_FOURCC_YV16 ||
#endif
map->image.format.fourcc == VA_FOURCC_YV12) {
// Chroma planes are YVU rather than YUV, so swap them.
FFSWAP(uint8_t*, dst->data[1], dst->data[2]);
}
