vaapi_encode: Add VP8 support

Fixes ticket #6116.

(cherry picked from commit ca62236a89f47bd871eaf69d8d9e837c93c55a6c)

1 files changed, 268 insertions, 0 deletions

diff --git a/libavcodec/vaapi_encode_vp8.c b/libavcodec/vaapi_encode_vp8.c
new file mode 100644
index 0000000..4a1c85e
--- /dev/null
+++ b/libavcodec/vaapi_encode_vp8.c
@@ -0,0 +1,268 @@
+/*
+ * 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 <va/va.h>
+#include <va/va_enc_vp8.h>
+
+#include "libavutil/avassert.h"
+#include "libavutil/common.h"
+#include "libavutil/internal.h"
+#include "libavutil/opt.h"
+#include "libavutil/pixfmt.h"
+
+#include "avcodec.h"
+#include "internal.h"
+#include "vaapi_encode.h"
+
+
+typedef struct VAAPIEncodeVP8Context {
+    int q_index_i;
+    int q_index_p;
+} VAAPIEncodeVP8Context;
+
+typedef struct VAAPIEncodeVP8Options {
+    int loop_filter_level;
+    int loop_filter_sharpness;
+} VAAPIEncodeVP8Options;
+
+
+#define vseq_var(name)     vseq->name, name
+#define vseq_field(name)   vseq->seq_fields.bits.name, name
+#define vpic_var(name)     vpic->name, name
+#define vpic_field(name)   vpic->pic_fields.bits.name, name
+
+
+static int vaapi_encode_vp8_init_sequence_params(AVCodecContext *avctx)
+{
+    VAAPIEncodeContext               *ctx = avctx->priv_data;
+    VAEncSequenceParameterBufferVP8 *vseq = ctx->codec_sequence_params;
+
+    vseq->frame_width  = avctx->width;
+    vseq->frame_height = avctx->height;
+
+    vseq->frame_width_scale  = 0;
+    vseq->frame_height_scale = 0;
+
+    vseq->error_resilient = 0;
+    vseq->kf_auto = 0;
+
+    if (!(ctx->va_rc_mode & VA_RC_CQP)) {
+        vseq->bits_per_second = avctx->bit_rate;
+        vseq->intra_period    = avctx->gop_size;
+    }
+
+    return 0;
+}
+
+static int vaapi_encode_vp8_init_picture_params(AVCodecContext *avctx,
+                                                VAAPIEncodePicture *pic)
+{
+    VAAPIEncodeContext              *ctx = avctx->priv_data;
+    VAEncPictureParameterBufferVP8 *vpic = pic->codec_picture_params;
+    VAAPIEncodeVP8Options           *opt = ctx->codec_options;
+    int i;
+
+    vpic->reconstructed_frame = pic->recon_surface;
+
+    vpic->coded_buf = pic->output_buffer;
+
+    switch (pic->type) {
+    case PICTURE_TYPE_IDR:
+    case PICTURE_TYPE_I:
+        av_assert0(pic->nb_refs == 0);
+        vpic->ref_flags.bits.force_kf = 1;
+        vpic->ref_last_frame =
+        vpic->ref_gf_frame   =
+        vpic->ref_arf_frame  =
+            VA_INVALID_SURFACE;
+        break;
+    case PICTURE_TYPE_P:
+        av_assert0(pic->nb_refs == 1);
+        vpic->ref_flags.bits.no_ref_last = 0;
+        vpic->ref_flags.bits.no_ref_gf   = 1;
+        vpic->ref_flags.bits.no_ref_arf  = 1;
+        vpic->ref_last_frame =
+        vpic->ref_gf_frame   =
+        vpic->ref_arf_frame  =
+            pic->refs[0]->recon_surface;
+        break;
+    default:
+        av_assert0(0 && "invalid picture type");
+    }
+
+    vpic->pic_flags.bits.frame_type = (pic->type != PICTURE_TYPE_IDR);
+    vpic->pic_flags.bits.show_frame = 1;
+
+    vpic->pic_flags.bits.refresh_last            = 1;
+    vpic->pic_flags.bits.refresh_golden_frame    = 1;
+    vpic->pic_flags.bits.refresh_alternate_frame = 1;
+
+    vpic->pic_flags.bits.version = 0;
+    vpic->pic_flags.bits.loop_filter_type = 0;
+    for (i = 0; i < 4; i++)
+        vpic->loop_filter_level[i] = opt->loop_filter_level;
+    vpic->sharpness_level = opt->loop_filter_sharpness;
+
+    vpic->clamp_qindex_low  = 0;
+    vpic->clamp_qindex_high = 127;
+
+    return 0;
+}
+
+static int vaapi_encode_vp8_write_quant_table(AVCodecContext *avctx,
+                                              VAAPIEncodePicture *pic,
+                                              int index, int *type,
+                                              char *data, size_t *data_len)
+{
+    VAAPIEncodeContext     *ctx = avctx->priv_data;
+    VAAPIEncodeVP8Context *priv = ctx->priv_data;
+    VAQMatrixBufferVP8 quant;
+    int i, q;
+
+    if (index > 0)
+        return AVERROR_EOF;
+
+    if (*data_len < sizeof(quant))
+        return AVERROR(EINVAL);
+    *type     = VAQMatrixBufferType;
+    *data_len = sizeof(quant);
+
+    if (pic->type == PICTURE_TYPE_P)
+        q = priv->q_index_p;
+    else
+        q = priv->q_index_i;
+
+    for (i = 0; i < 4; i++)
+        quant.quantization_index[i] = q;
+    for (i = 0; i < 5; i++)
+        quant.quantization_index_delta[i] = 0;
+
+    memcpy(data, &quant, sizeof(quant));
+    return 0;
+}
+
+static av_cold int vaapi_encode_vp8_configure(AVCodecContext *avctx)
+{
+    VAAPIEncodeContext     *ctx = avctx->priv_data;
+    VAAPIEncodeVP8Context *priv = ctx->priv_data;
+
+    priv->q_index_p = av_clip(avctx->global_quality, 0, 127);
+    if (avctx->i_quant_factor > 0.0)
+        priv->q_index_i = av_clip((avctx->global_quality *
+                                   avctx->i_quant_factor +
+                                   avctx->i_quant_offset) + 0.5,
+                                  0, 127);
+    else
+        priv->q_index_i = priv->q_index_p;
+
+    return 0;
+}
+
+static const VAAPIEncodeType vaapi_encode_type_vp8 = {
+    .configure             = &vaapi_encode_vp8_configure,
+
+    .priv_data_size        = sizeof(VAAPIEncodeVP8Context),
+
+    .sequence_params_size  = sizeof(VAEncSequenceParameterBufferVP8),
+    .init_sequence_params  = &vaapi_encode_vp8_init_sequence_params,
+
+    .picture_params_size   = sizeof(VAEncPictureParameterBufferVP8),
+    .init_picture_params   = &vaapi_encode_vp8_init_picture_params,
+
+    .write_extra_buffer    = &vaapi_encode_vp8_write_quant_table,
+};
+
+static av_cold int vaapi_encode_vp8_init(AVCodecContext *avctx)
+{
+    VAAPIEncodeContext *ctx = avctx->priv_data;
+
+    if (avctx->max_b_frames > 0) {
+        av_log(avctx, AV_LOG_ERROR, "B-frames are not supported.\n");
+        return AVERROR_PATCHWELCOME;
+    }
+
+    ctx->codec = &vaapi_encode_type_vp8;
+
+    ctx->va_profile    = VAProfileVP8Version0_3;
+    ctx->va_entrypoint = VAEntrypointEncSlice;
+    ctx->va_rt_format  = VA_RT_FORMAT_YUV420;
+
+    if (avctx->flags & AV_CODEC_FLAG_QSCALE) {
+        ctx->va_rc_mode = VA_RC_CQP;
+    } else if (avctx->bit_rate > 0) {
+        if (avctx->rc_max_rate == avctx->bit_rate)
+            ctx->va_rc_mode = VA_RC_CBR;
+        else
+            ctx->va_rc_mode = VA_RC_VBR;
+    } else {
+        ctx->va_rc_mode = VA_RC_CQP;
+    }
+
+    // Packed headers are not currently supported.
+    ctx->va_packed_headers = 0;
+
+    ctx->surface_width  = FFALIGN(avctx->width,  16);
+    ctx->surface_height = FFALIGN(avctx->height, 16);
+
+    return ff_vaapi_encode_init(avctx);
+}
+
+#define OFFSET(x) (offsetof(VAAPIEncodeContext, codec_options_data) + \
+                   offsetof(VAAPIEncodeVP8Options, x))
+#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
+static const AVOption vaapi_encode_vp8_options[] = {
+    { "loop_filter_level", "Loop filter level",
+      OFFSET(loop_filter_level), AV_OPT_TYPE_INT, { .i64 = 16 }, 0, 63, FLAGS },
+    { "loop_filter_sharpness", "Loop filter sharpness",
+      OFFSET(loop_filter_sharpness), AV_OPT_TYPE_INT, { .i64 = 4 }, 0, 15, FLAGS },
+    { NULL },
+};
+
+static const AVCodecDefault vaapi_encode_vp8_defaults[] = {
+    { "b",              "0"   },
+    { "bf",             "0"   },
+    { "g",              "120" },
+    { "global_quality", "40"  },
+    { NULL },
+};
+
+static const AVClass vaapi_encode_vp8_class = {
+    .class_name = "vp8_vaapi",
+    .item_name  = av_default_item_name,
+    .option     = vaapi_encode_vp8_options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_vp8_vaapi_encoder = {
+    .name           = "vp8_vaapi",
+    .long_name      = NULL_IF_CONFIG_SMALL("VP8 (VAAPI)"),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_VP8,
+    .priv_data_size = (sizeof(VAAPIEncodeContext) +
+                       sizeof(VAAPIEncodeVP8Options)),
+    .init           = &vaapi_encode_vp8_init,
+    .encode2        = &ff_vaapi_encode2,
+    .close          = &ff_vaapi_encode_close,
+    .priv_class     = &vaapi_encode_vp8_class,
+    .capabilities   = AV_CODEC_CAP_DELAY,
+    .defaults       = vaapi_encode_vp8_defaults,
+    .pix_fmts = (const enum AVPixelFormat[]) {
+        AV_PIX_FMT_VAAPI,
+        AV_PIX_FMT_NONE,
+    },
+};