Add common VA API data structures and helpers.

Originally committed as revision 18136 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/vaapi.c

+/*
+ * Video Acceleration API (video decoding)
+ * HW decode acceleration for MPEG-2, MPEG-4, H.264 and VC-1
+ *
+ * Copyright (C) 2008-2009 Splitted-Desktop Systems
+ *
+ * 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 "vaapi_internal.h"
+
+/**
+ * \addtogroup VAAPI_Decoding
+ *
+ * @{
+ */
+
+static void destroy_buffers(VADisplay display, VABufferID *buffers, unsigned int n_buffers)
+{
+    unsigned int i;
+    for (i = 0; i < n_buffers; i++) {
+        if (buffers[i]) {
+            vaDestroyBuffer(display, buffers[i]);
+            buffers[i] = 0;
+        }
+    }
+}
+
+static int render_picture(struct vaapi_context *vactx, VASurfaceID surface)
+{
+    VABufferID va_buffers[3];
+    unsigned int n_va_buffers = 0;
+
+    if (vaCreateBuffer(vactx->display, vactx->context_id,
+                       VAPictureParameterBufferType,
+                       vactx->pic_param_size,
+                       1, &vactx->pic_param,
+                       &vactx->pic_param_buf_id) != VA_STATUS_SUCCESS)
+        return -1;
+    va_buffers[n_va_buffers++] = vactx->pic_param_buf_id;
+
+    if (vactx->iq_matrix_present) {
+        if (vaCreateBuffer(vactx->display, vactx->context_id,
+                           VAIQMatrixBufferType,
+                           vactx->iq_matrix_size,
+                           1, &vactx->iq_matrix,
+                           &vactx->iq_matrix_buf_id) != VA_STATUS_SUCCESS)
+            return -1;
+        va_buffers[n_va_buffers++] = vactx->iq_matrix_buf_id;
+    }
+
+    if (vactx->bitplane_buffer) {
+        if (vaCreateBuffer(vactx->display, vactx->context_id,
+                           VABitPlaneBufferType,
+                           vactx->bitplane_buffer_size,
+                           1, vactx->bitplane_buffer,
+                           &vactx->bitplane_buf_id) != VA_STATUS_SUCCESS)
+            return -1;
+        va_buffers[n_va_buffers++] = vactx->bitplane_buf_id;
+    }
+
+    if (vaBeginPicture(vactx->display, vactx->context_id,
+                       surface) != VA_STATUS_SUCCESS)
+        return -1;
+
+    if (vaRenderPicture(vactx->display, vactx->context_id,
+                        va_buffers, n_va_buffers) != VA_STATUS_SUCCESS)
+        return -1;
+
+    if (vaRenderPicture(vactx->display, vactx->context_id,
+                        vactx->slice_buf_ids,
+                        vactx->n_slice_buf_ids) != VA_STATUS_SUCCESS)
+        return -1;
+
+    if (vaEndPicture(vactx->display, vactx->context_id) != VA_STATUS_SUCCESS)
+        return -1;
+
+    return 0;
+}
+
+static int commit_slices(struct vaapi_context *vactx)
+{
+    VABufferID *slice_buf_ids;
+    VABufferID slice_param_buf_id, slice_data_buf_id;
+
+    if (vactx->slice_count == 0)
+        return 0;
+
+    slice_buf_ids =
+        av_fast_realloc(vactx->slice_buf_ids,
+                        &vactx->slice_buf_ids_alloc,
+                        (vactx->n_slice_buf_ids + 2) * sizeof(slice_buf_ids[0]));
+    if (!slice_buf_ids)
+        return -1;
+    vactx->slice_buf_ids = slice_buf_ids;
+
+    slice_param_buf_id = 0;
+    if (vaCreateBuffer(vactx->display, vactx->context_id,
+                       VASliceParameterBufferType,
+                       vactx->slice_param_size,
+                       vactx->slice_count, vactx->slice_params,
+                       &slice_param_buf_id) != VA_STATUS_SUCCESS)
+        return -1;
+    vactx->slice_count = 0;
+
+    slice_data_buf_id = 0;
+    if (vaCreateBuffer(vactx->display, vactx->context_id,
+                       VASliceDataBufferType,
+                       vactx->slice_data_size,
+                       1, (void *)vactx->slice_data,
+                       &slice_data_buf_id) != VA_STATUS_SUCCESS)
+        return -1;
+    vactx->slice_data = NULL;
+    vactx->slice_data_size = 0;
+
+    slice_buf_ids[vactx->n_slice_buf_ids++] = slice_param_buf_id;
+    slice_buf_ids[vactx->n_slice_buf_ids++] = slice_data_buf_id;
+    return 0;
+}
+
+VASliceParameterBufferBase *ff_vaapi_alloc_slice(struct vaapi_context *vactx, const uint8_t *buffer, uint32_t size)
+{
+    uint8_t *slice_params;
+    VASliceParameterBufferBase *slice_param;
+
+    if (!vactx->slice_data)
+        vactx->slice_data = buffer;
+    if (vactx->slice_data + vactx->slice_data_size != buffer) {
+        if (commit_slices(vactx) < 0)
+            return NULL;
+        vactx->slice_data = buffer;
+    }
+
+    slice_params =
+        av_fast_realloc(vactx->slice_params,
+                        &vactx->slice_params_alloc,
+                        (vactx->slice_count + 1) * vactx->slice_param_size);
+    if (!slice_params)
+        return NULL;
+    vactx->slice_params = slice_params;
+
+    slice_param = (VASliceParameterBufferBase *)(slice_params + vactx->slice_count * vactx->slice_param_size);
+    slice_param->slice_data_size   = size;
+    slice_param->slice_data_offset = vactx->slice_data_size;
+    slice_param->slice_data_flag   = VA_SLICE_DATA_FLAG_ALL;
+
+    vactx->slice_count++;
+    vactx->slice_data_size += size;
+    return slice_param;
+}
+
+int ff_vaapi_common_end_frame(MpegEncContext *s)
+{
+    struct vaapi_context * const vactx = s->avctx->hwaccel_context;
+    int ret = -1;
+
+    dprintf(s->avctx, "ff_vaapi_common_end_frame()\n");
+
+    if (commit_slices(vactx) < 0)
+        goto done;
+    if (vactx->n_slice_buf_ids > 0) {
+        if (render_picture(vactx, ff_vaapi_get_surface(s->current_picture_ptr)) < 0)
+            goto done;
+        ff_draw_horiz_band(s, 0, s->avctx->height);
+    }
+    ret = 0;
+
+done:
+    destroy_buffers(vactx->display, &vactx->pic_param_buf_id, 1);
+    destroy_buffers(vactx->display, &vactx->iq_matrix_buf_id, 1);
+    destroy_buffers(vactx->display, &vactx->bitplane_buf_id, 1);
+    destroy_buffers(vactx->display, vactx->slice_buf_ids, vactx->n_slice_buf_ids);
+    av_freep(&vactx->bitplane_buffer);
+    av_freep(&vactx->slice_buf_ids);
+    av_freep(&vactx->slice_params);
+    vactx->n_slice_buf_ids     = 0;
+    vactx->slice_buf_ids_alloc = 0;
+    vactx->slice_count         = 0;
+    vactx->slice_params_alloc  = 0;
+    return ret;
+}
+
+/* @} */

libavcodec/vaapi.h

+/*
+ * Video Acceleration API (shared data between FFmpeg and the video player)
+ * HW decode acceleration for MPEG-2, MPEG-4, H.264 and VC-1
+ *
+ * Copyright (C) 2008-2009 Splitted-Desktop Systems
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_VAAPI_H
+#define AVCODEC_VAAPI_H
+
+#include <stdint.h>
+
+/**
+ * \defgroup VAAPI_Decoding VA API Decoding
+ * \ingroup Decoder
+ * @{
+ */
+
+/**
+ * This structure is used to share data between the FFmpeg library and
+ * the client video application.
+ * This shall be zero-allocated and available as
+ * AVCodecContext.hwaccel_context. All user members can be set once
+ * during initialization or through each AVCodecContext.get_buffer()
+ * function call. In any case, they must be valid prior to calling
+ * decoding functions.
+ */
+struct vaapi_context {
+    /**
+     * Window system dependent data
+     *
+     * - encoding: unused
+     * - decoding: Set by user
+     */
+    void *display;
+
+    /**
+     * Configuration ID
+     *
+     * - encoding: unused
+     * - decoding: Set by user
+     */
+    uint32_t config_id;
+
+    /**
+     * Context ID (video decode pipeline)
+     *
+     * - encoding: unused
+     * - decoding: Set by user
+     */
+    uint32_t context_id;
+
+    /**
+     * VAPictureParameterBuffer ID
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    VABufferID pic_param_buf_id;
+
+    /**
+     * VAIQMatrixBuffer ID
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    VABufferID iq_matrix_buf_id;
+
+    /**
+     * VABitPlaneBuffer ID (for VC-1 decoding)
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    VABufferID bitplane_buf_id;
+
+    /**
+     * Slice parameter/data buffer IDs
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    VABufferID *slice_buf_ids;
+
+    /**
+     * Number of effective slice buffer IDs to send to the HW
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    unsigned int n_slice_buf_ids;
+
+    /**
+     * Size of pre-allocated slice_buf_ids
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    unsigned int slice_buf_ids_alloc;
+
+    /**
+     * Picture parameter buffer
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    union {
+        VAPictureParameterBufferMPEG2 mpeg2;
+        VAPictureParameterBufferMPEG4 mpeg4;
+        VAPictureParameterBufferH264  h264;
+        VAPictureParameterBufferVC1   vc1;
+    } pic_param;
+
+    /**
+     * Size of a VAPictureParameterBuffer element
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    unsigned int pic_param_size;
+
+    /**
+     * Inverse quantization matrix buffer
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    union {
+        VAIQMatrixBufferMPEG2         mpeg2;
+        VAIQMatrixBufferMPEG4         mpeg4;
+        VAIQMatrixBufferH264          h264;
+    } iq_matrix;
+
+    /**
+     * Size of a VAIQMatrixBuffer element
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    unsigned int iq_matrix_size;
+
+    /**
+     * Flag: is quantization matrix present?
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    uint8_t iq_matrix_present;
+
+    /**
+     * VC-1 bitplane buffer
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    uint8_t *bitplane_buffer;
+
+    /**
+     * Size of VC-1 bitplane buffer
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    unsigned int bitplane_buffer_size;
+
+    /**
+     * Pointer to VASliceParameterBuffers
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    void *slice_params;
+
+    /**
+     * Size of a VASliceParameterBuffer element
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    unsigned int slice_param_size;
+
+    /**
+     * Size of pre-allocated slice_params
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    unsigned int slice_params_alloc;
+
+    /**
+     * Number of slices currently filled in
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    unsigned int slice_count;
+
+    /**
+     * Pointer to slice data buffer base
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    const uint8_t *slice_data;
+
+    /**
+     * Current size of slice data
+     *
+     * - encoding: unused
+     * - decoding: Set by libavcodec
+     */
+    uint32_t slice_data_size;
+};
+
+/* @} */
+
+#endif /* AVCODEC_VAAPI_H */

libavcodec/vaapi_internal.h

+/*
+ * Video Acceleration API (video decoding)
+ * HW decode acceleration for MPEG-2, MPEG-4, H.264 and VC-1
+ *
+ * Copyright (C) 2008-2009 Splitted-Desktop Systems
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_VAAPI_INTERNAL_H
+#define AVCODEC_VAAPI_INTERNAL_H
+
+#include <va/va.h>
+#include "vaapi.h"
+#include "avcodec.h"
+#include "mpegvideo.h"
+
+/**
+ * \addtogroup VAAPI_Decoding
+ *
+ * @{
+ */
+
+/** Extract VASurfaceID from a Picture */
+static inline VASurfaceID ff_vaapi_get_surface(Picture *pic)
+{
+    return (uintptr_t)pic->data[3];
+}
+
+/** Common AVHWAccel.end_frame() implementation */
+int ff_vaapi_common_end_frame(MpegEncContext *s);
+
+/**
+ * Allocate a new slice descriptor for the input slice.
+ *
+ * @param vactx the VA API context
+ * @param buffer the slice data buffer base
+ * @param size the size of the slice in bytes
+ * @return the newly allocated slice parameter
+ */
+VASliceParameterBufferBase *ff_vaapi_alloc_slice(struct vaapi_context *vactx, const uint8_t *buffer, uint32_t size);
+
+/* @} */
+
+#endif /* AVCODEC_VAAPI_INTERNAL_H */