Moved reusable functions from dxva2_h264.c to dxva2.c

Originally committed as revision 21407 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 154 insertions, 0 deletions

diff --git a/libavcodec/dxva2.c b/libavcodec/dxva2.c
new file mode 100644
index 0000000000..3f14311c9a
--- /dev/null
+++ b/libavcodec/dxva2.c
@@ -0,0 +1,154 @@
+/*
+ * DXVA2 HW acceleration.
+ *
+ * copyright (c) 2010 Laurent Aimar
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "dxva2_internal.h"
+
+void *ff_dxva2_get_surface(const Picture *picture)
+{
+    return picture->data[3];
+}
+
+unsigned ff_dxva2_get_surface_index(const struct dxva_context *ctx,
+                                    const Picture *picture)
+{
+    void *surface = ff_dxva2_get_surface(picture);
+    unsigned i;
+
+    for (i = 0; i < ctx->surface_count; i++)
+        if (ctx->surface[i] == surface)
+            return i;
+
+    assert(0);
+    return 0;
+}
+
+int ff_dxva2_commit_buffer(AVCodecContext *avctx,
+                           struct dxva_context *ctx,
+                           DXVA2_DecodeBufferDesc *dsc,
+                           unsigned type, const void *data, unsigned size,
+                           unsigned mb_count)
+{
+    void     *dxva_data;
+    unsigned dxva_size;
+    int      result;
+
+    if (FAILED(IDirectXVideoDecoder_GetBuffer(ctx->decoder, type,
+                                              &dxva_data, &dxva_size))) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to get a buffer for %d\n", type);
+        return -1;
+    }
+    if (size <= dxva_size) {
+        memcpy(dxva_data, data, size);
+
+        memset(dsc, 0, sizeof(*dsc));
+        dsc->CompressedBufferType = type;
+        dsc->DataSize             = size;
+        dsc->NumMBsInBuffer       = mb_count;
+
+        result = 0;
+    } else {
+        av_log(avctx, AV_LOG_ERROR, "Buffer for type %d was too small\n", type);
+        result = -1;
+    }
+    if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(ctx->decoder, type))) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to release buffer type %d\n", type);
+        result = -1;
+    }
+    return result;
+}
+
+int ff_dxva2_common_end_frame(AVCodecContext *avctx, MpegEncContext *s,
+                              const void *pp, unsigned pp_size,
+                              const void *qm, unsigned qm_size,
+                              int (*commit_bs_si)(AVCodecContext *,
+                                                  DXVA2_DecodeBufferDesc *bs,
+                                                  DXVA2_DecodeBufferDesc *slice))
+{
+    struct dxva_context *ctx = avctx->hwaccel_context;
+    unsigned               buffer_count = 0;
+    DXVA2_DecodeBufferDesc buffer[4];
+    DXVA2_DecodeExecuteParams exec;
+    int      result;
+
+    if (FAILED(IDirectXVideoDecoder_BeginFrame(ctx->decoder,
+                                               ff_dxva2_get_surface(s->current_picture_ptr),
+                                               NULL))) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to begin frame\n");
+        return -1;
+    }
+
+    result = ff_dxva2_commit_buffer(avctx, ctx, &buffer[buffer_count],
+                                    DXVA2_PictureParametersBufferType,
+                                    pp, pp_size, 0);
+    if (result) {
+        av_log(avctx, AV_LOG_ERROR,
+               "Failed to add picture parameter buffer\n");
+        goto end;
+    }
+    buffer_count++;
+
+    if (qm_size > 0) {
+        result = ff_dxva2_commit_buffer(avctx, ctx, &buffer[buffer_count],
+                                        DXVA2_InverseQuantizationMatrixBufferType,
+                                        qm, qm_size, 0);
+        if (result) {
+            av_log(avctx, AV_LOG_ERROR,
+                   "Failed to add inverse quantization matrix buffer\n");
+            goto end;
+        }
+        buffer_count++;
+    }
+
+    result = commit_bs_si(avctx,
+                          &buffer[buffer_count + 0],
+                          &buffer[buffer_count + 1]);
+    if (result) {
+        av_log(avctx, AV_LOG_ERROR,
+               "Failed to add bitstream or slice control buffer\n");
+        goto end;
+    }
+    buffer_count += 2;
+
+    /* TODO Film Grain when possible */
+
+    assert(buffer_count == 1 + (qm_size > 0) + 2);
+
+    memset(&exec, 0, sizeof(exec));
+    exec.NumCompBuffers      = buffer_count;
+    exec.pCompressedBuffers  = buffer;
+    exec.pExtensionData      = NULL;
+    if (FAILED(IDirectXVideoDecoder_Execute(ctx->decoder, &exec))) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to execute\n");
+        result = -1;
+    }
+
+end:
+    if (FAILED(IDirectXVideoDecoder_EndFrame(ctx->decoder, NULL))) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to end frame\n");
+        result = -1;
+    }
+
+    if (!result)
+        ff_draw_horiz_band(s, 0, s->avctx->height);
+    return result;
+}
+