[FFmpeg-cvslog] lavc: Rewrite VAAPI decode infrastructure
Mark Thompson
git at videolan.org
Mon Mar 20 09:25:40 EET 2017
ffmpeg | branch: master | Mark Thompson <sw at jkqxz.net> | Sat Aug 6 18:18:40 2016 +0100| [123ccd07c55ccf075cc5daf5581237fbccb86bdb] | committer: Mark Thompson
lavc: Rewrite VAAPI decode infrastructure
Moves much of the setup logic for VAAPI decoding into lavc; the user
now need only provide the hw_frames_ctx.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=123ccd07c55ccf075cc5daf5581237fbccb86bdb
---
libavcodec/Makefile | 5 +-
libavcodec/vaapi_decode.c | 534 ++++++++++++++++++++++++++++++++++++++++++++++
libavcodec/vaapi_decode.h | 90 ++++++++
3 files changed, 627 insertions(+), 2 deletions(-)
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 8eb7d36..4d04d6a 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -610,7 +610,7 @@ OBJS-$(CONFIG_ADPCM_YAMAHA_ENCODER) += adpcmenc.o adpcm_data.o
# hardware accelerators
OBJS-$(CONFIG_D3D11VA) += dxva2.o
OBJS-$(CONFIG_DXVA2) += dxva2.o
-OBJS-$(CONFIG_VAAPI) += vaapi.o
+OBJS-$(CONFIG_VAAPI) += vaapi.o vaapi_decode.o
OBJS-$(CONFIG_VDA) += vda.o
OBJS-$(CONFIG_VDPAU) += vdpau.o
@@ -777,7 +777,8 @@ SKIPHEADERS-$(CONFIG_NVENC) += nvenc.h
SKIPHEADERS-$(CONFIG_QSV) += qsv.h qsv_internal.h
SKIPHEADERS-$(CONFIG_QSVDEC) += qsvdec.h
SKIPHEADERS-$(CONFIG_QSVENC) += qsvenc.h
-SKIPHEADERS-$(CONFIG_VAAPI) += vaapi_encode.h vaapi_internal.h
+SKIPHEADERS-$(CONFIG_VAAPI) += vaapi_decode.h vaapi_encode.h \
+ vaapi_internal.h
SKIPHEADERS-$(CONFIG_VDA) += vda.h vda_internal.h
SKIPHEADERS-$(CONFIG_VDPAU) += vdpau.h vdpau_internal.h
diff --git a/libavcodec/vaapi_decode.c b/libavcodec/vaapi_decode.c
new file mode 100644
index 0000000..78b479f
--- /dev/null
+++ b/libavcodec/vaapi_decode.c
@@ -0,0 +1,534 @@
+/*
+ * 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 "libavutil/avassert.h"
+#include "libavutil/common.h"
+
+#include "avcodec.h"
+#include "internal.h"
+#include "vaapi_decode.h"
+
+
+int ff_vaapi_decode_make_param_buffer(AVCodecContext *avctx,
+ VAAPIDecodePicture *pic,
+ int type,
+ const void *data,
+ size_t size)
+{
+ VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
+ VAStatus vas;
+ VABufferID buffer;
+
+ av_assert0(pic->nb_param_buffers + 1 <= MAX_PARAM_BUFFERS);
+
+ vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
+ type, size, 1, (void*)data, &buffer);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create parameter "
+ "buffer (type %d): %d (%s).\n",
+ type, vas, vaErrorStr(vas));
+ return AVERROR(EIO);
+ }
+
+ pic->param_buffers[pic->nb_param_buffers++] = buffer;
+
+ av_log(avctx, AV_LOG_DEBUG, "Param buffer (type %d, %zu bytes) "
+ "is %#x.\n", type, size, buffer);
+ return 0;
+}
+
+
+int ff_vaapi_decode_make_slice_buffer(AVCodecContext *avctx,
+ VAAPIDecodePicture *pic,
+ const void *params_data,
+ size_t params_size,
+ const void *slice_data,
+ size_t slice_size)
+{
+ VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
+ VAStatus vas;
+ int index;
+
+ av_assert0(pic->nb_slices <= pic->slices_allocated);
+ if (pic->nb_slices == pic->slices_allocated) {
+ if (pic->slices_allocated > 0)
+ pic->slices_allocated *= 2;
+ else
+ pic->slices_allocated = 64;
+
+ pic->slice_buffers =
+ av_realloc_array(pic->slice_buffers,
+ pic->slices_allocated,
+ 2 * sizeof(*pic->slice_buffers));
+ if (!pic->slice_buffers)
+ return AVERROR(ENOMEM);
+ }
+ av_assert0(pic->nb_slices + 1 <= pic->slices_allocated);
+
+ index = 2 * pic->nb_slices;
+
+ vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
+ VASliceParameterBufferType,
+ params_size, 1, (void*)params_data,
+ &pic->slice_buffers[index]);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create slice "
+ "parameter buffer: %d (%s).\n", vas, vaErrorStr(vas));
+ return AVERROR(EIO);
+ }
+
+ av_log(avctx, AV_LOG_DEBUG, "Slice %d param buffer (%zu bytes) "
+ "is %#x.\n", pic->nb_slices, params_size,
+ pic->slice_buffers[index]);
+
+ vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
+ VASliceDataBufferType,
+ slice_size, 1, (void*)slice_data,
+ &pic->slice_buffers[index + 1]);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create slice "
+ "data buffer (size %zu): %d (%s).\n",
+ slice_size, vas, vaErrorStr(vas));
+ vaDestroyBuffer(ctx->hwctx->display,
+ pic->slice_buffers[index]);
+ return AVERROR(EIO);
+ }
+
+ av_log(avctx, AV_LOG_DEBUG, "Slice %d data buffer (%zu bytes) "
+ "is %#x.\n", pic->nb_slices, slice_size,
+ pic->slice_buffers[index + 1]);
+
+ ++pic->nb_slices;
+ return 0;
+}
+
+static void ff_vaapi_decode_destroy_buffers(AVCodecContext *avctx,
+ VAAPIDecodePicture *pic)
+{
+ VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
+ VAStatus vas;
+ int i;
+
+ for (i = 0; i < pic->nb_param_buffers; i++) {
+ vas = vaDestroyBuffer(ctx->hwctx->display,
+ pic->param_buffers[i]);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to destroy "
+ "parameter buffer %#x: %d (%s).\n",
+ pic->param_buffers[i], vas, vaErrorStr(vas));
+ }
+ }
+
+ for (i = 0; i < 2 * pic->nb_slices; i++) {
+ vas = vaDestroyBuffer(ctx->hwctx->display,
+ pic->slice_buffers[i]);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to destroy slice "
+ "slice buffer %#x: %d (%s).\n",
+ pic->slice_buffers[i], vas, vaErrorStr(vas));
+ }
+ }
+}
+
+int ff_vaapi_decode_issue(AVCodecContext *avctx,
+ VAAPIDecodePicture *pic)
+{
+ VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
+ VAStatus vas;
+ int err, i;
+
+ av_log(avctx, AV_LOG_DEBUG, "Decode to surface %#x.\n",
+ pic->output_surface);
+
+ for (i = 0; i < pic->nb_param_buffers; i++)
+ vaUnmapBuffer(ctx->hwctx->display, pic->param_buffers[i]);
+
+ vas = vaBeginPicture(ctx->hwctx->display, ctx->va_context,
+ pic->output_surface);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to begin picture decode "
+ "issue: %d (%s).\n", vas, vaErrorStr(vas));
+ err = AVERROR(EIO);
+ goto fail_with_picture;
+ }
+
+ vas = vaRenderPicture(ctx->hwctx->display, ctx->va_context,
+ pic->param_buffers, pic->nb_param_buffers);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to upload decode "
+ "parameters: %d (%s).\n", vas, vaErrorStr(vas));
+ err = AVERROR(EIO);
+ goto fail_with_picture;
+ }
+
+ vas = vaRenderPicture(ctx->hwctx->display, ctx->va_context,
+ pic->slice_buffers, 2 * pic->nb_slices);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to upload slices: "
+ "%d (%s).\n", vas, vaErrorStr(vas));
+ err = AVERROR(EIO);
+ goto fail_with_picture;
+ }
+
+ vas = vaEndPicture(ctx->hwctx->display, ctx->va_context);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to end picture decode "
+ "issue: %d (%s).\n", vas, vaErrorStr(vas));
+ err = AVERROR(EIO);
+ if (ctx->hwctx->driver_quirks &
+ AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS)
+ goto fail;
+ else
+ goto fail_at_end;
+ }
+
+ if (ctx->hwctx->driver_quirks &
+ AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS)
+ ff_vaapi_decode_destroy_buffers(avctx, pic);
+
+ pic->nb_slices = 0;
+ pic->slices_allocated = 0;
+ av_freep(&pic->slice_buffers);
+
+ return 0;
+
+fail_with_picture:
+ vas = vaEndPicture(ctx->hwctx->display, ctx->va_context);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to end picture decode "
+ "after error: %d (%s).\n", vas, vaErrorStr(vas));
+ }
+fail:
+ ff_vaapi_decode_destroy_buffers(avctx, pic);
+fail_at_end:
+ return err;
+}
+
+int ff_vaapi_decode_cancel(AVCodecContext *avctx,
+ VAAPIDecodePicture *pic)
+{
+ ff_vaapi_decode_destroy_buffers(avctx, pic);
+
+ pic->nb_param_buffers = 0;
+ pic->nb_slices = 0;
+ pic->slices_allocated = 0;
+ av_freep(&pic->slice_buffers);
+
+ return 0;
+}
+
+static const struct {
+ enum AVCodecID codec_id;
+ int codec_profile;
+ VAProfile va_profile;
+} vaapi_profile_map[] = {
+#define MAP(c, p, v) { AV_CODEC_ID_ ## c, FF_PROFILE_ ## p, VAProfile ## v }
+ MAP(MPEG2VIDEO, MPEG2_SIMPLE, MPEG2Simple ),
+ MAP(MPEG2VIDEO, MPEG2_MAIN, MPEG2Main ),
+ MAP(H263, UNKNOWN, H263Baseline),
+ MAP(MPEG4, MPEG4_SIMPLE, MPEG4Simple ),
+ MAP(MPEG4, MPEG4_ADVANCED_SIMPLE,
+ MPEG4AdvancedSimple),
+ MAP(MPEG4, MPEG4_MAIN, MPEG4Main ),
+ MAP(H264, H264_CONSTRAINED_BASELINE,
+ H264ConstrainedBaseline),
+ MAP(H264, H264_BASELINE, H264Baseline),
+ MAP(H264, H264_MAIN, H264Main ),
+ MAP(H264, H264_HIGH, H264High ),
+#if VA_CHECK_VERSION(0, 37, 0)
+ MAP(HEVC, HEVC_MAIN, HEVCMain ),
+#endif
+ MAP(WMV3, VC1_SIMPLE, VC1Simple ),
+ MAP(WMV3, VC1_MAIN, VC1Main ),
+ MAP(WMV3, VC1_COMPLEX, VC1Advanced ),
+ MAP(WMV3, VC1_ADVANCED, VC1Advanced ),
+ MAP(VC1, VC1_SIMPLE, VC1Simple ),
+ MAP(VC1, VC1_MAIN, VC1Main ),
+ MAP(VC1, VC1_COMPLEX, VC1Advanced ),
+ MAP(VC1, VC1_ADVANCED, VC1Advanced ),
+#if VA_CHECK_VERSION(0, 35, 0)
+ MAP(VP8, UNKNOWN, VP8Version0_3 ),
+#endif
+#if VA_CHECK_VERSION(0, 38, 0)
+ MAP(VP9, VP9_0, VP9Profile0 ),
+#endif
+#undef MAP
+};
+
+static int vaapi_decode_make_config(AVCodecContext *avctx)
+{
+ VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
+
+ AVVAAPIHWConfig *hwconfig = NULL;
+ AVHWFramesConstraints *constraints = NULL;
+ VAStatus vas;
+ int err, i, j;
+ const AVCodecDescriptor *codec_desc;
+ VAProfile profile, *profile_list = NULL;
+ int profile_count, exact_match, alt_profile;
+
+ // Allowing a profile mismatch can be useful because streams may
+ // over-declare their required capabilities - in particular, many
+ // H.264 baseline profile streams (notably some of those in FATE)
+ // only use the feature set of constrained baseline. This flag
+ // would have to be be set by some external means in order to
+ // actually be useful. (AV_HWACCEL_FLAG_IGNORE_PROFILE?)
+ int allow_profile_mismatch = 0;
+
+ codec_desc = avcodec_descriptor_get(avctx->codec_id);
+ if (!codec_desc) {
+ err = AVERROR(EINVAL);
+ goto fail;
+ }
+
+ profile_count = vaMaxNumProfiles(ctx->hwctx->display);
+ profile_list = av_malloc_array(profile_count,
+ sizeof(VAProfile));
+ if (!profile_list) {
+ err = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ vas = vaQueryConfigProfiles(ctx->hwctx->display,
+ profile_list, &profile_count);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to query profiles: "
+ "%d (%s).\n", vas, vaErrorStr(vas));
+ err = AVERROR(ENOSYS);
+ goto fail;
+ }
+
+ profile = VAProfileNone;
+ exact_match = 0;
+
+ for (i = 0; i < FF_ARRAY_ELEMS(vaapi_profile_map); i++) {
+ int profile_match = 0;
+ if (avctx->codec_id != vaapi_profile_map[i].codec_id)
+ continue;
+ if (avctx->profile == vaapi_profile_map[i].codec_profile)
+ profile_match = 1;
+ profile = vaapi_profile_map[i].va_profile;
+ for (j = 0; j < profile_count; j++) {
+ if (profile == profile_list[j]) {
+ exact_match = profile_match;
+ break;
+ }
+ }
+ if (j < profile_count) {
+ if (exact_match)
+ break;
+ alt_profile = vaapi_profile_map[i].codec_profile;
+ }
+ }
+ av_freep(&profile_list);
+
+ if (profile == VAProfileNone) {
+ av_log(ctx, AV_LOG_ERROR, "No support for codec %s "
+ "profile %d.\n", codec_desc->name, avctx->profile);
+ err = AVERROR(ENOSYS);
+ goto fail;
+ }
+ if (!exact_match) {
+ if (allow_profile_mismatch) {
+ av_log(avctx, AV_LOG_VERBOSE, "Codec %s profile %d not "
+ "supported for hardware decode.\n",
+ codec_desc->name, avctx->profile);
+ av_log(avctx, AV_LOG_WARNING, "Using possibly-"
+ "incompatible profile %d instead.\n",
+ alt_profile);
+ } else {
+ av_log(avctx, AV_LOG_VERBOSE, "Codec %s profile %d not "
+ "supported for hardware decode.\n",
+ codec_desc->name, avctx->profile);
+ err = AVERROR(EINVAL);
+ goto fail;
+ }
+ }
+
+ ctx->va_profile = profile;
+ ctx->va_entrypoint = VAEntrypointVLD;
+
+ vas = vaCreateConfig(ctx->hwctx->display, ctx->va_profile,
+ ctx->va_entrypoint, NULL, 0,
+ &ctx->va_config);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create decode "
+ "configuration: %d (%s).\n", vas, vaErrorStr(vas));
+ err = AVERROR(EIO);
+ goto fail;
+ }
+
+ hwconfig = av_hwdevice_hwconfig_alloc(ctx->frames->device_ref);
+ if (!hwconfig) {
+ err = AVERROR(ENOMEM);
+ goto fail;
+ }
+ hwconfig->config_id = ctx->va_config;
+
+ constraints =
+ av_hwdevice_get_hwframe_constraints(ctx->frames->device_ref,
+ hwconfig);
+ if (!constraints) {
+ // Ignore.
+ } else {
+ if (avctx->coded_width < constraints->min_width ||
+ avctx->coded_height < constraints->min_height ||
+ avctx->coded_width > constraints->max_width ||
+ avctx->coded_height > constraints->max_height) {
+ av_log(ctx, AV_LOG_ERROR, "Hardware does not support image "
+ "size %dx%d (constraints: width %d-%d height %d-%d).\n",
+ avctx->coded_width, avctx->coded_height,
+ constraints->min_width, constraints->max_width,
+ constraints->min_height, constraints->max_height);
+ err = AVERROR(EINVAL);
+ goto fail;
+ }
+ }
+
+ av_hwframe_constraints_free(&constraints);
+ av_freep(&hwconfig);
+
+ return 0;
+
+fail:
+ av_hwframe_constraints_free(&constraints);
+ av_freep(&hwconfig);
+ if (ctx->va_config != VA_INVALID_ID) {
+ vaDestroyConfig(ctx->hwctx->display, ctx->va_config);
+ ctx->va_config = VA_INVALID_ID;
+ }
+ av_freep(&profile_list);
+ return err;
+}
+
+int ff_vaapi_decode_init(AVCodecContext *avctx)
+{
+ VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
+ VAStatus vas;
+ int err;
+
+ ctx->va_config = VA_INVALID_ID;
+ ctx->va_context = VA_INVALID_ID;
+
+ if (avctx->hwaccel_context) {
+ av_log(avctx, AV_LOG_WARNING, "Using deprecated struct "
+ "vaapi_context in decode.\n");
+
+ ctx->have_old_context = 1;
+ ctx->old_context = avctx->hwaccel_context;
+
+ // Really we only want the VAAPI device context, but this
+ // allocates a whole generic device context because we don't
+ // have any other way to determine how big it should be.
+ ctx->device_ref =
+ av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_VAAPI);
+ if (!ctx->device_ref) {
+ err = AVERROR(ENOMEM);
+ goto fail;
+ }
+ ctx->device = (AVHWDeviceContext*)ctx->device_ref->data;
+ ctx->hwctx = ctx->device->hwctx;
+
+ ctx->hwctx->display = ctx->old_context->display;
+
+ // The old VAAPI decode setup assumed this quirk was always
+ // present, so set it here to avoid the behaviour changing.
+ ctx->hwctx->driver_quirks =
+ AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS;
+
+ } else if (avctx->hw_frames_ctx) {
+ // This structure has a shorter lifetime than the enclosing
+ // AVCodecContext, so we inherit the references from there
+ // and do not need to make separate ones.
+
+ ctx->frames = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
+ ctx->hwfc = ctx->frames->hwctx;
+
+ ctx->device = ctx->frames->device_ctx;
+ ctx->hwctx = ctx->device->hwctx;
+
+ } else {
+ av_log(avctx, AV_LOG_ERROR, "A hardware frames context is "
+ "required for VAAPI decoding.\n");
+ err = AVERROR(EINVAL);
+ goto fail;
+ }
+
+ if (ctx->have_old_context) {
+ ctx->va_config = ctx->old_context->config_id;
+ ctx->va_context = ctx->old_context->context_id;
+
+ av_log(avctx, AV_LOG_DEBUG, "Using user-supplied decoder "
+ "context: %#x/%#x.\n", ctx->va_config, ctx->va_context);
+ } else {
+ err = vaapi_decode_make_config(avctx);
+ if (err)
+ goto fail;
+
+ vas = vaCreateContext(ctx->hwctx->display, ctx->va_config,
+ avctx->coded_width, avctx->coded_height,
+ VA_PROGRESSIVE,
+ ctx->hwfc->surface_ids,
+ ctx->hwfc->nb_surfaces,
+ &ctx->va_context);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create decode "
+ "context: %d (%s).\n", vas, vaErrorStr(vas));
+ err = AVERROR(EIO);
+ goto fail;
+ }
+
+ av_log(avctx, AV_LOG_DEBUG, "Decode context initialised: "
+ "%#x/%#x.\n", ctx->va_config, ctx->va_context);
+ }
+
+ return 0;
+
+fail:
+ ff_vaapi_decode_uninit(avctx);
+ return err;
+}
+
+int ff_vaapi_decode_uninit(AVCodecContext *avctx)
+{
+ VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
+ VAStatus vas;
+
+ if (ctx->have_old_context) {
+ av_buffer_unref(&ctx->device_ref);
+ } else {
+ if (ctx->va_context != VA_INVALID_ID) {
+ vas = vaDestroyContext(ctx->hwctx->display, ctx->va_context);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to destroy decode "
+ "context %#x: %d (%s).\n",
+ ctx->va_context, vas, vaErrorStr(vas));
+ }
+ }
+ if (ctx->va_config != VA_INVALID_ID) {
+ vas = vaDestroyConfig(ctx->hwctx->display, ctx->va_config);
+ if (vas != VA_STATUS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to destroy decode "
+ "configuration %#x: %d (%s).\n",
+ ctx->va_config, vas, vaErrorStr(vas));
+ }
+ }
+ }
+
+ return 0;
+}
diff --git a/libavcodec/vaapi_decode.h b/libavcodec/vaapi_decode.h
new file mode 100644
index 0000000..7882925
--- /dev/null
+++ b/libavcodec/vaapi_decode.h
@@ -0,0 +1,90 @@
+/*
+ * 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
+ */
+
+#ifndef AVCODEC_VAAPI_DECODE_H
+#define AVCODEC_VAAPI_DECODE_H
+
+#include <va/va.h>
+
+#include "libavutil/frame.h"
+#include "libavutil/hwcontext.h"
+#include "libavutil/hwcontext_vaapi.h"
+
+#include "avcodec.h"
+#include "vaapi.h"
+
+static inline VASurfaceID ff_vaapi_get_surface_id(AVFrame *pic)
+{
+ return (uintptr_t)pic->data[3];
+}
+
+enum {
+ MAX_PARAM_BUFFERS = 16,
+};
+
+typedef struct VAAPIDecodePicture {
+ VASurfaceID output_surface;
+
+ int nb_param_buffers;
+ VABufferID param_buffers[MAX_PARAM_BUFFERS];
+
+ int nb_slices;
+ VABufferID *slice_buffers;
+ int slices_allocated;
+} VAAPIDecodePicture;
+
+typedef struct VAAPIDecodeContext {
+ VAProfile va_profile;
+ VAEntrypoint va_entrypoint;
+ VAConfigID va_config;
+ VAContextID va_context;
+
+ int have_old_context;
+ struct vaapi_context *old_context;
+ AVBufferRef *device_ref;
+
+ AVHWDeviceContext *device;
+ AVVAAPIDeviceContext *hwctx;
+
+ AVHWFramesContext *frames;
+ AVVAAPIFramesContext *hwfc;
+} VAAPIDecodeContext;
+
+
+int ff_vaapi_decode_make_param_buffer(AVCodecContext *avctx,
+ VAAPIDecodePicture *pic,
+ int type,
+ const void *data,
+ size_t size);
+
+int ff_vaapi_decode_make_slice_buffer(AVCodecContext *avctx,
+ VAAPIDecodePicture *pic,
+ const void *params_data,
+ size_t params_size,
+ const void *slice_data,
+ size_t slice_size);
+
+int ff_vaapi_decode_issue(AVCodecContext *avctx,
+ VAAPIDecodePicture *pic);
+int ff_vaapi_decode_cancel(AVCodecContext *avctx,
+ VAAPIDecodePicture *pic);
+
+int ff_vaapi_decode_init(AVCodecContext *avctx);
+int ff_vaapi_decode_uninit(AVCodecContext *avctx);
+
+#endif /* AVCODEC_VAAPI_DECODE_H */
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