[FFmpeg-devel] [PATCH 2/6] ffmpeg: dxva2: factorize some code that can be common with d3d11va
Steve Lhomme
robux4 at gmail.com
Wed Jan 4 15:52:39 EET 2017
ffmpeg_dxva_template.c has to be included and misc. typedefs have to be set
to use the proper DXVA2 structures.
initguid.h is included in ffmpeg_dxva.h so any includes after that will also
define GUIDs locally.
---
ffmpeg_dxva2.c | 282 ++++++++--------------------------------------
ffmpeg_dxva_template.c | 295 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 341 insertions(+), 236 deletions(-)
create mode 100644 ffmpeg_dxva_template.c
diff --git a/ffmpeg_dxva2.c b/ffmpeg_dxva2.c
index 1a391f8..e07f2b8 100644
--- a/ffmpeg_dxva2.c
+++ b/ffmpeg_dxva2.c
@@ -43,56 +43,6 @@
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_dxva2.h"
-/* define all the GUIDs used directly here,
- to avoid problems with inconsistent dxva2api.h versions in mingw-w64 and different MSVC version */
-#include <initguid.h>
-DEFINE_GUID(IID_IDirectXVideoDecoderService, 0xfc51a551,0xd5e7,0x11d9,0xaf,0x55,0x00,0x05,0x4e,0x43,0xff,0x02);
-
-DEFINE_GUID(DXVA2_ModeMPEG2_VLD, 0xee27417f, 0x5e28,0x4e65,0xbe,0xea,0x1d,0x26,0xb5,0x08,0xad,0xc9);
-DEFINE_GUID(DXVA2_ModeMPEG2and1_VLD, 0x86695f12, 0x340e,0x4f04,0x9f,0xd3,0x92,0x53,0xdd,0x32,0x74,0x60);
-DEFINE_GUID(DXVA2_ModeH264_E, 0x1b81be68, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
-DEFINE_GUID(DXVA2_ModeH264_F, 0x1b81be69, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
-DEFINE_GUID(DXVADDI_Intel_ModeH264_E, 0x604F8E68, 0x4951,0x4C54,0x88,0xFE,0xAB,0xD2,0x5C,0x15,0xB3,0xD6);
-DEFINE_GUID(DXVA2_ModeVC1_D, 0x1b81beA3, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
-DEFINE_GUID(DXVA2_ModeVC1_D2010, 0x1b81beA4, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
-DEFINE_GUID(DXVA2_ModeHEVC_VLD_Main, 0x5b11d51b, 0x2f4c,0x4452,0xbc,0xc3,0x09,0xf2,0xa1,0x16,0x0c,0xc0);
-DEFINE_GUID(DXVA2_ModeHEVC_VLD_Main10,0x107af0e0, 0xef1a,0x4d19,0xab,0xa8,0x67,0xa1,0x63,0x07,0x3d,0x13);
-DEFINE_GUID(DXVA2_ModeVP9_VLD_Profile0, 0x463707f8, 0xa1d0,0x4585,0x87,0x6d,0x83,0xaa,0x6d,0x60,0xb8,0x9e);
-DEFINE_GUID(DXVA2_NoEncrypt, 0x1b81beD0, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
-DEFINE_GUID(GUID_NULL, 0x00000000, 0x0000,0x0000,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00);
-
-typedef struct dxva2_mode {
- const GUID *guid;
- enum AVCodecID codec;
-} dxva2_mode;
-
-static const dxva2_mode dxva2_modes[] = {
- /* MPEG-2 */
- { &DXVA2_ModeMPEG2_VLD, AV_CODEC_ID_MPEG2VIDEO },
- { &DXVA2_ModeMPEG2and1_VLD, AV_CODEC_ID_MPEG2VIDEO },
-
- /* H.264 */
- { &DXVA2_ModeH264_F, AV_CODEC_ID_H264 },
- { &DXVA2_ModeH264_E, AV_CODEC_ID_H264 },
- /* Intel specific H.264 mode */
- { &DXVADDI_Intel_ModeH264_E, AV_CODEC_ID_H264 },
-
- /* VC-1 / WMV3 */
- { &DXVA2_ModeVC1_D2010, AV_CODEC_ID_VC1 },
- { &DXVA2_ModeVC1_D2010, AV_CODEC_ID_WMV3 },
- { &DXVA2_ModeVC1_D, AV_CODEC_ID_VC1 },
- { &DXVA2_ModeVC1_D, AV_CODEC_ID_WMV3 },
-
- /* HEVC/H.265 */
- { &DXVA2_ModeHEVC_VLD_Main, AV_CODEC_ID_HEVC },
- { &DXVA2_ModeHEVC_VLD_Main10,AV_CODEC_ID_HEVC },
-
- /* VP8/9 */
- { &DXVA2_ModeVP9_VLD_Profile0, AV_CODEC_ID_VP9 },
-
- { NULL, 0 },
-};
-
typedef struct DXVA2Context {
IDirectXVideoDecoder *decoder;
@@ -106,55 +56,24 @@ typedef struct DXVA2Context {
AVBufferRef *hw_frames_ctx;
} DXVA2Context;
+typedef DXVA2_ConfigPictureDecode DXVA_DECODER_CONFIG;
+typedef D3DFORMAT DXVA_SURFACE_FORMAT;
+typedef DXVA2Context DXVA_CONTEXT;
+typedef struct dxva_context DXVA_AV_CONTEXT;
+typedef IDirectXVideoDecoderService *DXVA_DECODER_SERVICE;
+#include "ffmpeg_dxva_template.c"
+
+DEFINE_GUID(IID_IDirectXVideoDecoderService, 0xfc51a551,0xd5e7,0x11d9,0xaf,0x55,0x00,0x05,0x4e,0x43,0xff,0x02);
+
static void dxva2_uninit(AVCodecContext *s)
{
InputStream *ist = s->opaque;
DXVA2Context *ctx = ist->hwaccel_ctx;
- ist->hwaccel_uninit = NULL;
- ist->hwaccel_get_buffer = NULL;
- ist->hwaccel_retrieve_data = NULL;
-
if (ctx->decoder_service)
IDirectXVideoDecoderService_Release(ctx->decoder_service);
- av_buffer_unref(&ctx->hw_frames_ctx);
- av_buffer_unref(&ctx->hw_device_ctx);
-
- av_frame_free(&ctx->tmp_frame);
-
- av_freep(&ist->hwaccel_ctx);
- av_freep(&s->hwaccel_context);
-}
-
-static int dxva2_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
-{
- InputStream *ist = s->opaque;
- DXVA2Context *ctx = ist->hwaccel_ctx;
-
- return av_hwframe_get_buffer(ctx->hw_frames_ctx, frame, 0);
-}
-
-static int dxva2_retrieve_data(AVCodecContext *s, AVFrame *frame)
-{
- InputStream *ist = s->opaque;
- DXVA2Context *ctx = ist->hwaccel_ctx;
- int ret;
-
- ret = av_hwframe_transfer_data(ctx->tmp_frame, frame, 0);
- if (ret < 0)
- return ret;
-
- ret = av_frame_copy_props(ctx->tmp_frame, frame);
- if (ret < 0) {
- av_frame_unref(ctx->tmp_frame);
- return ret;
- }
-
- av_frame_unref(frame);
- av_frame_move_ref(frame, ctx->tmp_frame);
-
- return 0;
+ dxva_uninit(s);
}
static int dxva2_alloc(AVCodecContext *s)
@@ -167,21 +86,11 @@ static int dxva2_alloc(AVCodecContext *s)
AVHWDeviceContext *device_ctx;
AVDXVA2DeviceContext *device_hwctx;
- int ret;
-
- ctx = av_mallocz(sizeof(*ctx));
- if (!ctx)
- return AVERROR(ENOMEM);
-
- ist->hwaccel_ctx = ctx;
- ist->hwaccel_uninit = dxva2_uninit;
- ist->hwaccel_get_buffer = dxva2_get_buffer;
- ist->hwaccel_retrieve_data = dxva2_retrieve_data;
-
- ret = av_hwdevice_ctx_create(&ctx->hw_device_ctx, AV_HWDEVICE_TYPE_DXVA2,
- ist->hwaccel_device, NULL, 0);
+ int ret = dxva_alloc(s, AV_HWDEVICE_TYPE_DXVA2);
if (ret < 0)
- goto fail;
+ return ret;
+
+ ctx = ist->hwaccel_ctx;
device_ctx = (AVHWDeviceContext*)ctx->hw_device_ctx->data;
device_hwctx = device_ctx->hwctx;
@@ -200,18 +109,11 @@ static int dxva2_alloc(AVCodecContext *s)
av_log(NULL, loglevel, "Failed to create IDirectXVideoDecoderService\n");
goto fail;
}
-
- ctx->tmp_frame = av_frame_alloc();
- if (!ctx->tmp_frame)
- goto fail;
-
- s->hwaccel_context = av_mallocz(sizeof(struct dxva_context));
- if (!s->hwaccel_context)
- goto fail;
+ ist->hwaccel_uninit = dxva2_uninit;
return 0;
fail:
- dxva2_uninit(s);
+ dxva_uninit(s);
return AVERROR(EINVAL);
}
@@ -222,11 +124,10 @@ static int dxva2_get_decoder_configuration(AVCodecContext *s, const GUID *device
InputStream *ist = s->opaque;
int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
DXVA2Context *ctx = ist->hwaccel_ctx;
- unsigned cfg_count = 0, best_score = 0;
+ unsigned cfg_count = 0;
DXVA2_ConfigPictureDecode *cfg_list = NULL;
- DXVA2_ConfigPictureDecode best_cfg = {{0}};
HRESULT hr;
- int i;
+ int ret;
hr = IDirectXVideoDecoderService_GetDecoderConfigurations(ctx->decoder_service, device_guid, desc, NULL, &cfg_count, &cfg_list);
if (FAILED(hr)) {
@@ -234,32 +135,29 @@ static int dxva2_get_decoder_configuration(AVCodecContext *s, const GUID *device
return AVERROR(EINVAL);
}
- for (i = 0; i < cfg_count; i++) {
- DXVA2_ConfigPictureDecode *cfg = &cfg_list[i];
-
- unsigned score;
- if (cfg->ConfigBitstreamRaw == 1)
- score = 1;
- else if (s->codec_id == AV_CODEC_ID_H264 && cfg->ConfigBitstreamRaw == 2)
- score = 2;
- else
- continue;
- if (IsEqualGUID(&cfg->guidConfigBitstreamEncryption, &DXVA2_NoEncrypt))
- score += 16;
- if (score > best_score) {
- best_score = score;
- best_cfg = *cfg;
- }
- }
+ ret = dxva_get_decoder_configuration(s, cfg_list, cfg_count, config);
CoTaskMemFree(cfg_list);
+ return ret;
+}
- if (!best_score) {
- av_log(NULL, loglevel, "No valid decoder configuration available\n");
- return AVERROR(EINVAL);
+static int dxva2_validate_output(DXVA_DECODER_SERVICE decoder_service, GUID guid, DXVA_SURFACE_FORMAT surface_format)
+{
+ HRESULT hr;
+ int ret = 0;
+ unsigned j, target_count = 0;
+ D3DFORMAT *target_list;
+ hr = IDirectXVideoDecoderService_GetDecoderRenderTargets(decoder_service, &guid, &target_count, &target_list);
+ if (SUCCEEDED(hr)) {
+ for (j = 0; j < target_count; j++) {
+ const D3DFORMAT format = target_list[j];
+ if (format == surface_format) {
+ ret = 1;
+ break;
+ }
+ }
+ CoTaskMemFree(target_list);
}
-
- *config = best_cfg;
- return 0;
+ return ret;
}
static int dxva2_create_decoder(AVCodecContext *s)
@@ -269,14 +167,12 @@ static int dxva2_create_decoder(AVCodecContext *s)
DXVA2Context *ctx = ist->hwaccel_ctx;
struct dxva_context *dxva_ctx = s->hwaccel_context;
GUID *guid_list = NULL;
- unsigned guid_count = 0, i, j;
+ unsigned guid_count = 0;
GUID device_guid = GUID_NULL;
const D3DFORMAT surface_format = (s->sw_pix_fmt == AV_PIX_FMT_YUV420P10) ? MKTAG('P','0','1','0') : MKTAG('N','V','1','2');
- D3DFORMAT target_format = 0;
DXVA2_VideoDesc desc = { 0 };
DXVA2_ConfigPictureDecode config;
HRESULT hr;
- int surface_alignment, num_surfaces;
int ret;
AVDXVA2FramesContext *frames_hwctx;
@@ -288,79 +184,22 @@ static int dxva2_create_decoder(AVCodecContext *s)
goto fail;
}
- for (i = 0; dxva2_modes[i].guid; i++) {
- D3DFORMAT *target_list = NULL;
- unsigned target_count = 0;
- const dxva2_mode *mode = &dxva2_modes[i];
- if (mode->codec != s->codec_id)
- continue;
-
- for (j = 0; j < guid_count; j++) {
- if (IsEqualGUID(mode->guid, &guid_list[j]))
- break;
- }
- if (j == guid_count)
- continue;
-
- hr = IDirectXVideoDecoderService_GetDecoderRenderTargets(ctx->decoder_service, mode->guid, &target_count, &target_list);
- if (FAILED(hr)) {
- continue;
- }
- for (j = 0; j < target_count; j++) {
- const D3DFORMAT format = target_list[j];
- if (format == surface_format) {
- target_format = format;
- break;
- }
- }
- CoTaskMemFree(target_list);
- if (target_format) {
- device_guid = *mode->guid;
- break;
- }
- }
+ ret = dxva_get_decoder_guid(s, ctx->decoder_service, surface_format, dxva2_validate_output,
+ guid_count, guid_list, &device_guid);
CoTaskMemFree(guid_list);
-
- if (IsEqualGUID(&device_guid, &GUID_NULL)) {
- av_log(NULL, loglevel, "No decoder device for codec found\n");
+ if (ret < 0) {
goto fail;
}
desc.SampleWidth = s->coded_width;
desc.SampleHeight = s->coded_height;
- desc.Format = target_format;
+ desc.Format = surface_format;
ret = dxva2_get_decoder_configuration(s, &device_guid, &desc, &config);
if (ret < 0) {
goto fail;
}
- /* decoding MPEG-2 requires additional alignment on some Intel GPUs,
- but it causes issues for H.264 on certain AMD GPUs..... */
- if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO)
- surface_alignment = 32;
- /* the HEVC DXVA2 spec asks for 128 pixel aligned surfaces to ensure
- all coding features have enough room to work with */
- else if (s->codec_id == AV_CODEC_ID_HEVC)
- surface_alignment = 128;
- else
- surface_alignment = 16;
-
- /* 4 base work surfaces */
- num_surfaces = 4;
-
- /* add surfaces based on number of possible refs */
- if (s->codec_id == AV_CODEC_ID_H264 || s->codec_id == AV_CODEC_ID_HEVC)
- num_surfaces += 16;
- else if (s->codec_id == AV_CODEC_ID_VP9)
- num_surfaces += 8;
- else
- num_surfaces += 2;
-
- /* add extra surfaces for frame threading */
- if (s->active_thread_type & FF_THREAD_FRAME)
- num_surfaces += s->thread_count;
-
ctx->hw_frames_ctx = av_hwframe_ctx_alloc(ctx->hw_device_ctx);
if (!ctx->hw_frames_ctx)
goto fail;
@@ -368,13 +207,10 @@ static int dxva2_create_decoder(AVCodecContext *s)
frames_hwctx = frames_ctx->hwctx;
frames_ctx->format = AV_PIX_FMT_DXVA2_VLD;
- frames_ctx->sw_format = (target_format == MKTAG('P','0','1','0') ? AV_PIX_FMT_P010 : AV_PIX_FMT_NV12);
- frames_ctx->width = FFALIGN(s->coded_width, surface_alignment);
- frames_ctx->height = FFALIGN(s->coded_height, surface_alignment);
- frames_ctx->initial_pool_size = num_surfaces;
-
frames_hwctx->surface_type = DXVA2_VideoDecoderRenderTarget;
+ dxva_adjust_decoder(s);
+
ret = av_hwframe_ctx_init(ctx->hw_frames_ctx);
if (ret < 0) {
av_log(NULL, loglevel, "Failed to initialize the HW frames context\n");
@@ -397,9 +233,6 @@ static int dxva2_create_decoder(AVCodecContext *s)
dxva_ctx->surface = frames_hwctx->surfaces;
dxva_ctx->surface_count = frames_hwctx->nb_surfaces;
- if (IsEqualGUID(&ctx->decoder_guid, &DXVADDI_Intel_ModeH264_E))
- dxva_ctx->workaround |= FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO;
-
return 0;
fail:
av_buffer_unref(&ctx->hw_frames_ctx);
@@ -409,8 +242,6 @@ fail:
int dxva2_init(AVCodecContext *s)
{
InputStream *ist = s->opaque;
- int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
- DXVA2Context *ctx;
int ret;
if (!ist->hwaccel_ctx) {
@@ -418,27 +249,6 @@ int dxva2_init(AVCodecContext *s)
if (ret < 0)
return ret;
}
- ctx = ist->hwaccel_ctx;
-
- if (s->codec_id == AV_CODEC_ID_H264 &&
- (s->profile & ~FF_PROFILE_H264_CONSTRAINED) > FF_PROFILE_H264_HIGH) {
- av_log(NULL, loglevel, "Unsupported H.264 profile for DXVA2 HWAccel: %d\n", s->profile);
- return AVERROR(EINVAL);
- }
-
- if (s->codec_id == AV_CODEC_ID_HEVC &&
- s->profile != FF_PROFILE_HEVC_MAIN && s->profile != FF_PROFILE_HEVC_MAIN_10) {
- av_log(NULL, loglevel, "Unsupported HEVC profile for DXVA2 HWAccel: %d\n", s->profile);
- return AVERROR(EINVAL);
- }
-
- av_buffer_unref(&ctx->hw_frames_ctx);
- ret = dxva2_create_decoder(s);
- if (ret < 0) {
- av_log(NULL, loglevel, "Error creating the DXVA2 decoder\n");
- return ret;
- }
-
- return 0;
+ return dxva_init(s, dxva2_create_decoder);
}
diff --git a/ffmpeg_dxva_template.c b/ffmpeg_dxva_template.c
new file mode 100644
index 0000000..87d33f2
--- /dev/null
+++ b/ffmpeg_dxva_template.c
@@ -0,0 +1,295 @@
+/*
+ * 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
+ */
+
+/* define all the GUIDs used directly here,
+ to avoid problems with inconsistent dxva2api.h versions in mingw-w64 and different MSVC version */
+#include <initguid.h>
+DEFINE_GUID(DXVA2_ModeMPEG2_VLD, 0xee27417f, 0x5e28,0x4e65,0xbe,0xea,0x1d,0x26,0xb5,0x08,0xad,0xc9);
+DEFINE_GUID(DXVA2_ModeMPEG2and1_VLD, 0x86695f12, 0x340e,0x4f04,0x9f,0xd3,0x92,0x53,0xdd,0x32,0x74,0x60);
+DEFINE_GUID(DXVA2_ModeH264_E, 0x1b81be68, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
+DEFINE_GUID(DXVA2_ModeH264_F, 0x1b81be69, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
+DEFINE_GUID(DXVADDI_Intel_ModeH264_E, 0x604F8E68, 0x4951,0x4C54,0x88,0xFE,0xAB,0xD2,0x5C,0x15,0xB3,0xD6);
+DEFINE_GUID(DXVA2_ModeVC1_D, 0x1b81beA3, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
+DEFINE_GUID(DXVA2_ModeVC1_D2010, 0x1b81beA4, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
+DEFINE_GUID(DXVA2_ModeHEVC_VLD_Main, 0x5b11d51b, 0x2f4c,0x4452,0xbc,0xc3,0x09,0xf2,0xa1,0x16,0x0c,0xc0);
+DEFINE_GUID(DXVA2_ModeHEVC_VLD_Main10,0x107af0e0, 0xef1a,0x4d19,0xab,0xa8,0x67,0xa1,0x63,0x07,0x3d,0x13);
+DEFINE_GUID(DXVA2_NoEncrypt, 0x1b81beD0, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
+DEFINE_GUID(DXVA2_ModeVP9_VLD_Profile0, 0x463707f8, 0xa1d0,0x4585,0x87,0x6d,0x83,0xaa,0x6d,0x60,0xb8,0x9e);
+DEFINE_GUID(GUID_NULL, 0x00000000, 0x0000,0x0000,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00);
+
+typedef struct dxva_mode {
+ const GUID *guid;
+ enum AVCodecID codec;
+} dxva_mode;
+
+static const dxva_mode dxva_modes[] = {
+ /* MPEG-2 */
+ { &DXVA2_ModeMPEG2_VLD, AV_CODEC_ID_MPEG2VIDEO },
+ { &DXVA2_ModeMPEG2and1_VLD, AV_CODEC_ID_MPEG2VIDEO },
+
+ /* H.264 */
+ { &DXVA2_ModeH264_F, AV_CODEC_ID_H264 },
+ { &DXVA2_ModeH264_E, AV_CODEC_ID_H264 },
+ /* Intel specific H.264 mode */
+ { &DXVADDI_Intel_ModeH264_E, AV_CODEC_ID_H264 },
+
+ /* VC-1 / WMV3 */
+ { &DXVA2_ModeVC1_D2010, AV_CODEC_ID_VC1 },
+ { &DXVA2_ModeVC1_D2010, AV_CODEC_ID_WMV3 },
+ { &DXVA2_ModeVC1_D, AV_CODEC_ID_VC1 },
+ { &DXVA2_ModeVC1_D, AV_CODEC_ID_WMV3 },
+
+ /* HEVC/H.265 */
+ { &DXVA2_ModeHEVC_VLD_Main, AV_CODEC_ID_HEVC },
+ { &DXVA2_ModeHEVC_VLD_Main10, AV_CODEC_ID_HEVC },
+
+ /* VP8/9 */
+ { &DXVA2_ModeVP9_VLD_Profile0, AV_CODEC_ID_VP9 },
+
+ { NULL, 0 },
+};
+
+static int dxva_get_decoder_configuration(AVCodecContext *s,
+ const DXVA_DECODER_CONFIG *cfg_list,
+ unsigned cfg_count,
+ DXVA_DECODER_CONFIG *config)
+{
+ InputStream *ist = s->opaque;
+ int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
+ unsigned i, best_score = 0;
+ DXVA_DECODER_CONFIG best_cfg = { { 0 } };
+
+ for (i = 0; i < cfg_count; i++) {
+ const DXVA_DECODER_CONFIG *cfg = &cfg_list[i];
+
+ unsigned score;
+ if (cfg->ConfigBitstreamRaw == 1)
+ score = 1;
+ else if (s->codec_id == AV_CODEC_ID_H264 && cfg->ConfigBitstreamRaw == 2)
+ score = 2;
+ else
+ continue;
+ if (IsEqualGUID(&cfg->guidConfigBitstreamEncryption, &DXVA2_NoEncrypt))
+ score += 16;
+ if (score > best_score) {
+ best_score = score;
+ best_cfg = *cfg;
+ }
+ }
+
+ if (!best_score) {
+ av_log(NULL, loglevel, "No valid decoder configuration available\n");
+ return AVERROR(EINVAL);
+ }
+
+ *config = best_cfg;
+ return 0;
+}
+
+
+static int dxva_get_decoder_guid(AVCodecContext *s, DXVA_DECODER_SERVICE service, DXVA_SURFACE_FORMAT surface_format,
+ int (*validate)(DXVA_DECODER_SERVICE service, GUID guid, DXVA_SURFACE_FORMAT surface_format),
+ unsigned guid_count, const GUID *guid_list, GUID *decoder_guid)
+{
+ InputStream *ist = s->opaque;
+ DXVA_AV_CONTEXT *dxva_ctx = ist->hwaccel_ctx;
+ int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
+ unsigned i, j;
+
+ *decoder_guid = GUID_NULL;
+ for (i = 0; dxva_modes[i].guid; i++) {
+ const dxva_mode *mode = &dxva_modes[i];
+ if (mode->codec != s->codec_id)
+ continue;
+
+ for (j = 0; j < guid_count; j++) {
+ if (IsEqualGUID(mode->guid, &guid_list[j]))
+ break;
+ }
+ if (j == guid_count)
+ continue;
+
+ if (validate(service, *mode->guid, surface_format)) {
+ *decoder_guid = *mode->guid;
+ break;
+ }
+ }
+
+ if (IsEqualGUID(decoder_guid, &GUID_NULL)) {
+ av_log(NULL, loglevel, "No decoder device for codec found\n");
+ return AVERROR(EINVAL);
+ }
+
+ if (IsEqualGUID(decoder_guid, &DXVADDI_Intel_ModeH264_E))
+ dxva_ctx->workaround |= FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO;
+
+ return 0;
+}
+
+static void dxva_adjust_decoder(AVCodecContext *s)
+{
+ InputStream *ist = s->opaque;
+ AVHWFramesContext *frames_ctx;
+ DXVA_CONTEXT *ctx = ist->hwaccel_ctx;
+ int surface_alignment, num_surfaces;
+
+ /* decoding MPEG-2 requires additional alignment on some Intel GPUs,
+ but it causes issues for H.264 on certain AMD GPUs..... */
+ if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO)
+ surface_alignment = 32;
+ /* the HEVC DXVA2 spec asks for 128 pixel aligned surfaces to ensure
+ all coding features have enough room to work with */
+ else if (s->codec_id == AV_CODEC_ID_HEVC)
+ surface_alignment = 128;
+ else
+ surface_alignment = 16;
+
+ /* 4 base work surfaces */
+ num_surfaces = 4;
+
+ /* add surfaces based on number of possible refs */
+ if (s->codec_id == AV_CODEC_ID_H264 || s->codec_id == AV_CODEC_ID_HEVC)
+ num_surfaces += 16;
+ else if (s->codec_id == AV_CODEC_ID_VP9)
+ num_surfaces += 8;
+ else
+ num_surfaces += 2;
+
+ /* add extra surfaces for frame threading */
+ if (s->active_thread_type & FF_THREAD_FRAME)
+ num_surfaces += s->thread_count;
+
+ frames_ctx = (AVHWFramesContext*)ctx->hw_frames_ctx->data;
+
+ frames_ctx->sw_format = s->sw_pix_fmt == AV_PIX_FMT_YUV420P10 ?
+ AV_PIX_FMT_P010 : AV_PIX_FMT_NV12;
+ frames_ctx->width = FFALIGN(s->coded_width, surface_alignment);
+ frames_ctx->height = FFALIGN(s->coded_height, surface_alignment);
+ frames_ctx->initial_pool_size = num_surfaces;
+}
+
+static int dxva_init(AVCodecContext *s, int (*create_decoder)(AVCodecContext *s))
+{
+ InputStream *ist = s->opaque;
+ int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
+ DXVA_CONTEXT *ctx = ist->hwaccel_ctx;
+ int ret;
+
+ if (s->codec_id == AV_CODEC_ID_H264 &&
+ (s->profile & ~FF_PROFILE_H264_CONSTRAINED) > FF_PROFILE_H264_HIGH) {
+ av_log(NULL, loglevel, "Unsupported H.264 profile for DXVA HWAccel: %d\n", s->profile);
+ return AVERROR(EINVAL);
+ }
+
+ if (s->codec_id == AV_CODEC_ID_HEVC &&
+ s->profile != FF_PROFILE_HEVC_MAIN && s->profile != FF_PROFILE_HEVC_MAIN_10) {
+ av_log(NULL, loglevel, "Unsupported HEVC profile for DXVA HWAccel: %d\n", s->profile);
+ return AVERROR(EINVAL);
+ }
+
+ av_buffer_unref(&ctx->hw_frames_ctx);
+
+ ret = create_decoder(s);
+ if (ret < 0)
+ av_log(NULL, loglevel, "Error creating the DXVA decoder\n");
+
+ return ret;
+}
+
+static int dxva_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
+{
+ InputStream *ist = s->opaque;
+ DXVA_CONTEXT *ctx = ist->hwaccel_ctx;
+
+ return av_hwframe_get_buffer(ctx->hw_frames_ctx, frame, 0);
+}
+
+static int dxva_retrieve_data(AVCodecContext *s, AVFrame *frame)
+{
+ InputStream *ist = s->opaque;
+ DXVA_CONTEXT *ctx = ist->hwaccel_ctx;
+ int ret;
+
+ ret = av_hwframe_transfer_data(ctx->tmp_frame, frame, 0);
+ if (ret < 0)
+ return ret;
+
+ ret = av_frame_copy_props(ctx->tmp_frame, frame);
+ if (ret < 0) {
+ av_frame_unref(ctx->tmp_frame);
+ return ret;
+ }
+
+ av_frame_unref(frame);
+ av_frame_move_ref(frame, ctx->tmp_frame);
+
+ return 0;
+}
+
+static void dxva_uninit(AVCodecContext *s)
+{
+ InputStream *ist = s->opaque;
+ DXVA_CONTEXT *ctx = ist->hwaccel_ctx;
+
+ ist->hwaccel_uninit = NULL;
+ ist->hwaccel_get_buffer = NULL;
+ ist->hwaccel_retrieve_data = NULL;
+
+ av_buffer_unref(&ctx->hw_frames_ctx);
+ av_buffer_unref(&ctx->hw_device_ctx);
+
+ av_frame_free(&ctx->tmp_frame);
+
+ av_freep(&ist->hwaccel_ctx);
+ av_freep(&s->hwaccel_context);
+}
+
+static int dxva_alloc(AVCodecContext *s, enum AVHWDeviceType type)
+{
+ InputStream *ist = s->opaque;
+ DXVA_CONTEXT *ctx;
+
+ int ret;
+
+ ctx = av_mallocz(sizeof(*ctx));
+ if (!ctx)
+ return AVERROR(ENOMEM);
+
+ ist->hwaccel_ctx = ctx;
+ ist->hwaccel_uninit = dxva_uninit;
+ ist->hwaccel_get_buffer = dxva_get_buffer;
+ ist->hwaccel_retrieve_data = dxva_retrieve_data;
+
+ ret = av_hwdevice_ctx_create(&ctx->hw_device_ctx, type,
+ ist->hwaccel_device, NULL, 0);
+ if (ret < 0)
+ goto fail;
+
+ ctx->tmp_frame = av_frame_alloc();
+ if (!ctx->tmp_frame)
+ goto fail;
+
+ s->hwaccel_context = av_mallocz(sizeof(DXVA_AV_CONTEXT));
+ if (!s->hwaccel_context)
+ goto fail;
+
+ return 0;
+fail:
+ dxva_uninit(s);
+ return AVERROR(EINVAL);
+}
--
2.10.1.windows.1
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