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https://git.ffmpeg.org/ffmpeg.git
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hwcontext_vaapi: Add DRM to VAAPI mapping
This commit is contained in:
Mark Thompson
parent
9cb23cd9fe
commit
170c65335c
@ -25,6 +25,11 @@
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# include <va/va_drm.h>
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#endif
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#if CONFIG_LIBDRM
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# include <va/va_drmcommon.h>
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# include <drm_fourcc.h>
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#endif
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#include <fcntl.h>
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#if HAVE_UNISTD_H
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# include <unistd.h>
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@ -41,6 +46,10 @@
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#include "pixdesc.h"
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#include "pixfmt.h"
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#if CONFIG_LIBDRM
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# include "hwcontext_drm.h"
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#endif
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typedef struct VAAPIDevicePriv {
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#if HAVE_VAAPI_X11
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Display *x11_display;
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@ -897,6 +906,173 @@ static int vaapi_map_from(AVHWFramesContext *hwfc, AVFrame *dst,
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return 0;
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}
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#if CONFIG_LIBDRM
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#define DRM_MAP(va, layers, ...) { \
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VA_FOURCC_ ## va, \
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layers, \
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{ __VA_ARGS__ } \
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}
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static const struct {
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uint32_t va_fourcc;
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int nb_layer_formats;
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uint32_t layer_formats[AV_DRM_MAX_PLANES];
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} vaapi_drm_format_map[] = {
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DRM_MAP(NV12, 2, DRM_FORMAT_R8, DRM_FORMAT_RG88),
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DRM_MAP(NV12, 1, DRM_FORMAT_NV12),
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#ifdef VA_FOURCC_P010
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DRM_MAP(P010, 2, DRM_FORMAT_R16, DRM_FORMAT_RG1616),
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#endif
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DRM_MAP(BGRA, 1, DRM_FORMAT_BGRA8888),
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DRM_MAP(BGRX, 1, DRM_FORMAT_BGRX8888),
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DRM_MAP(RGBA, 1, DRM_FORMAT_RGBA8888),
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DRM_MAP(RGBX, 1, DRM_FORMAT_RGBX8888),
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#ifdef VA_FOURCC_ABGR
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DRM_MAP(ABGR, 1, DRM_FORMAT_ABGR8888),
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DRM_MAP(XBGR, 1, DRM_FORMAT_XBGR8888),
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#endif
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DRM_MAP(ARGB, 1, DRM_FORMAT_ARGB8888),
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DRM_MAP(XRGB, 1, DRM_FORMAT_XRGB8888),
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};
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#undef DRM_MAP
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static void vaapi_unmap_from_drm(AVHWFramesContext *dst_fc,
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HWMapDescriptor *hwmap)
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{
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AVVAAPIDeviceContext *dst_dev = dst_fc->device_ctx->hwctx;
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VASurfaceID surface_id = (VASurfaceID)(uintptr_t)hwmap->priv;
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av_log(dst_fc, AV_LOG_DEBUG, "Destroy surface %#x.\n", surface_id);
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vaDestroySurfaces(dst_dev->display, &surface_id, 1);
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}
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static int vaapi_map_from_drm(AVHWFramesContext *src_fc, AVFrame *dst,
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const AVFrame *src, int flags)
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{
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AVHWFramesContext *dst_fc =
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(AVHWFramesContext*)dst->hw_frames_ctx->data;
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AVVAAPIDeviceContext *dst_dev = dst_fc->device_ctx->hwctx;
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const AVDRMFrameDescriptor *desc;
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VASurfaceID surface_id;
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VAStatus vas;
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uint32_t va_fourcc, va_rt_format;
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int err, i, j, k;
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unsigned long buffer_handle;
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VASurfaceAttribExternalBuffers buffer_desc;
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VASurfaceAttrib attrs[2] = {
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{
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.type = VASurfaceAttribMemoryType,
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.flags = VA_SURFACE_ATTRIB_SETTABLE,
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.value.type = VAGenericValueTypeInteger,
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.value.value.i = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME,
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},
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{
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.type = VASurfaceAttribExternalBufferDescriptor,
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.flags = VA_SURFACE_ATTRIB_SETTABLE,
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.value.type = VAGenericValueTypePointer,
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.value.value.p = &buffer_desc,
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}
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};
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desc = (AVDRMFrameDescriptor*)src->data[0];
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if (desc->nb_objects != 1) {
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av_log(dst_fc, AV_LOG_ERROR, "VAAPI can only map frames "
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"made from a single DRM object.\n");
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return AVERROR(EINVAL);
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}
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va_fourcc = 0;
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for (i = 0; i < FF_ARRAY_ELEMS(vaapi_drm_format_map); i++) {
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if (desc->nb_layers != vaapi_drm_format_map[i].nb_layer_formats)
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continue;
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for (j = 0; j < desc->nb_layers; j++) {
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if (desc->layers[j].format !=
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vaapi_drm_format_map[i].layer_formats[j])
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break;
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}
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if (j != desc->nb_layers)
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continue;
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va_fourcc = vaapi_drm_format_map[i].va_fourcc;
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break;
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}
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if (!va_fourcc) {
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av_log(dst_fc, AV_LOG_ERROR, "DRM format not supported "
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"by VAAPI.\n");
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return AVERROR(EINVAL);
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}
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av_log(dst_fc, AV_LOG_DEBUG, "Map DRM object %d to VAAPI as "
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"%08x.\n", desc->objects[0].fd, va_fourcc);
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for (i = 0; i < FF_ARRAY_ELEMS(vaapi_format_map); i++) {
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if (vaapi_format_map[i].fourcc == va_fourcc)
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va_rt_format = vaapi_format_map[i].rt_format;
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}
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buffer_handle = desc->objects[0].fd;
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buffer_desc.pixel_format = va_fourcc;
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buffer_desc.width = src_fc->width;
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buffer_desc.height = src_fc->height;
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buffer_desc.data_size = desc->objects[0].size;
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buffer_desc.buffers = &buffer_handle;
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buffer_desc.num_buffers = 1;
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buffer_desc.flags = 0;
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k = 0;
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for (i = 0; i < desc->nb_layers; i++) {
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for (j = 0; j < desc->layers[i].nb_planes; j++) {
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buffer_desc.pitches[k] = desc->layers[i].planes[j].pitch;
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buffer_desc.offsets[k] = desc->layers[i].planes[j].offset;
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++k;
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}
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}
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buffer_desc.num_planes = k;
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vas = vaCreateSurfaces(dst_dev->display, va_rt_format,
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src->width, src->height,
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&surface_id, 1,
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attrs, FF_ARRAY_ELEMS(attrs));
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if (vas != VA_STATUS_SUCCESS) {
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av_log(dst_fc, AV_LOG_ERROR, "Failed to create surface from DRM "
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"object: %d (%s).\n", vas, vaErrorStr(vas));
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return AVERROR(EIO);
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}
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av_log(dst_fc, AV_LOG_DEBUG, "Create surface %#x.\n", surface_id);
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err = ff_hwframe_map_create(dst->hw_frames_ctx, dst, src,
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&vaapi_unmap_from_drm,
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(void*)(uintptr_t)surface_id);
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if (err < 0)
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return err;
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dst->width = src->width;
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dst->height = src->height;
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dst->data[3] = (uint8_t*)(uintptr_t)surface_id;
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av_log(dst_fc, AV_LOG_DEBUG, "Mapped DRM object %d to "
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"surface %#x.\n", desc->objects[0].fd, surface_id);
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return 0;
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}
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#endif
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static int vaapi_map_to(AVHWFramesContext *hwfc, AVFrame *dst,
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const AVFrame *src, int flags)
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{
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switch (src->format) {
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#if CONFIG_LIBDRM
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case AV_PIX_FMT_DRM_PRIME:
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return vaapi_map_from_drm(hwfc, dst, src, flags);
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#endif
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default:
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return AVERROR(ENOSYS);
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}
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}
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static void vaapi_device_free(AVHWDeviceContext *ctx)
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{
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AVVAAPIDeviceContext *hwctx = ctx->hwctx;
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@ -999,6 +1175,56 @@ static int vaapi_device_create(AVHWDeviceContext *ctx, const char *device,
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return 0;
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}
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static int vaapi_device_derive(AVHWDeviceContext *ctx,
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AVHWDeviceContext *src_ctx, int flags)
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{
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#if CONFIG_LIBDRM
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if (src_ctx->type == AV_HWDEVICE_TYPE_DRM) {
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AVDRMDeviceContext *src_hwctx = src_ctx->hwctx;
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AVVAAPIDeviceContext *hwctx = ctx->hwctx;
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VADisplay *display;
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VAStatus vas;
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VAAPIDevicePriv *priv;
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int major, minor;
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if (src_hwctx->fd < 0) {
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av_log(ctx, AV_LOG_ERROR, "DRM instance requires an associated "
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"device to derive a VA display from.\n");
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return AVERROR(EINVAL);
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}
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priv = av_mallocz(sizeof(*priv));
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if (!priv)
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return AVERROR(ENOMEM);
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// Inherits the fd from the source context, which will close it.
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priv->drm_fd = -1;
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ctx->user_opaque = priv;
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ctx->free = &vaapi_device_free;
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display = vaGetDisplayDRM(src_hwctx->fd);
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if (!display) {
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av_log(ctx, AV_LOG_ERROR, "Failed to open a VA display from "
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"DRM device.\n");
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return AVERROR(EIO);
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}
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hwctx->display = display;
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vas = vaInitialize(display, &major, &minor);
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if (vas != VA_STATUS_SUCCESS) {
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av_log(ctx, AV_LOG_ERROR, "Failed to initialise VAAPI "
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"connection: %d (%s).\n", vas, vaErrorStr(vas));
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return AVERROR(EIO);
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}
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return 0;
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}
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#endif
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return AVERROR(ENOSYS);
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}
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const HWContextType ff_hwcontext_type_vaapi = {
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.type = AV_HWDEVICE_TYPE_VAAPI,
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.name = "VAAPI",
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@ -1010,6 +1236,7 @@ const HWContextType ff_hwcontext_type_vaapi = {
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.frames_priv_size = sizeof(VAAPIFramesContext),
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.device_create = &vaapi_device_create,
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.device_derive = &vaapi_device_derive,
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.device_init = &vaapi_device_init,
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.device_uninit = &vaapi_device_uninit,
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.frames_get_constraints = &vaapi_frames_get_constraints,
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@ -1019,7 +1246,7 @@ const HWContextType ff_hwcontext_type_vaapi = {
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.transfer_get_formats = &vaapi_transfer_get_formats,
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.transfer_data_to = &vaapi_transfer_data_to,
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.transfer_data_from = &vaapi_transfer_data_from,
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.map_to = NULL,
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.map_to = &vaapi_map_to,
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.map_from = &vaapi_map_from,
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.pix_fmts = (const enum AVPixelFormat[]) {
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