Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 216 insertions, 0 deletions

diff --git a/media/ffvpx/libavcodec/av1_parser.c b/media/ffvpx/libavcodec/av1_parser.c
new file mode 100644
index 0000000000..14dae92fe9
--- /dev/null
+++ b/media/ffvpx/libavcodec/av1_parser.c
@@ -0,0 +1,216 @@
+/*
+ * AV1 parser
+ *
+ * Copyright (C) 2018 James Almer <jamrial@gmail.com>
+ *
+ * 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 "libavutil/avassert.h"
+#include "cbs.h"
+#include "cbs_av1.h"
+#include "parser.h"
+
+typedef struct AV1ParseContext {
+    CodedBitstreamContext *cbc;
+    CodedBitstreamFragment temporal_unit;
+    int parsed_extradata;
+} AV1ParseContext;
+
+static const enum AVPixelFormat pix_fmts_8bit[2][2] = {
+    { AV_PIX_FMT_YUV444P, AV_PIX_FMT_NONE },
+    { AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P },
+};
+static const enum AVPixelFormat pix_fmts_10bit[2][2] = {
+    { AV_PIX_FMT_YUV444P10, AV_PIX_FMT_NONE },
+    { AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV420P10 },
+};
+static const enum AVPixelFormat pix_fmts_12bit[2][2] = {
+    { AV_PIX_FMT_YUV444P12, AV_PIX_FMT_NONE },
+    { AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12 },
+};
+
+static const enum AVPixelFormat pix_fmts_rgb[3] = {
+    AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12,
+};
+
+static int av1_parser_parse(AVCodecParserContext *ctx,
+                            AVCodecContext *avctx,
+                            const uint8_t **out_data, int *out_size,
+                            const uint8_t *data, int size)
+{
+    AV1ParseContext *s = ctx->priv_data;
+    CodedBitstreamFragment *td = &s->temporal_unit;
+    const CodedBitstreamAV1Context *av1 = s->cbc->priv_data;
+    const AV1RawSequenceHeader *seq;
+    const AV1RawColorConfig *color;
+    int ret;
+
+    *out_data = data;
+    *out_size = size;
+
+    ctx->key_frame         = -1;
+    ctx->pict_type         = AV_PICTURE_TYPE_NONE;
+    ctx->picture_structure = AV_PICTURE_STRUCTURE_UNKNOWN;
+
+    s->cbc->log_ctx = avctx;
+
+    if (avctx->extradata_size && !s->parsed_extradata) {
+        s->parsed_extradata = 1;
+
+        ret = ff_cbs_read_extradata_from_codec(s->cbc, td, avctx);
+        if (ret < 0) {
+            av_log(avctx, AV_LOG_WARNING, "Failed to parse extradata.\n");
+        }
+
+        ff_cbs_fragment_reset(td);
+    }
+
+    ret = ff_cbs_read(s->cbc, td, data, size);
+    if (ret < 0) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to parse temporal unit.\n");
+        goto end;
+    }
+
+    if (!av1->sequence_header) {
+        av_log(avctx, AV_LOG_ERROR, "No sequence header available\n");
+        goto end;
+    }
+
+    seq = av1->sequence_header;
+    color = &seq->color_config;
+
+    for (int i = 0; i < td->nb_units; i++) {
+        const CodedBitstreamUnit *unit = &td->units[i];
+        const AV1RawOBU *obu = unit->content;
+        const AV1RawFrameHeader *frame;
+
+        if (unit->type == AV1_OBU_FRAME)
+            frame = &obu->obu.frame.header;
+        else if (unit->type == AV1_OBU_FRAME_HEADER)
+            frame = &obu->obu.frame_header;
+        else
+            continue;
+
+        if (obu->header.spatial_id > 0)
+            continue;
+
+        if (!frame->show_frame && !frame->show_existing_frame)
+            continue;
+
+        ctx->width  = frame->frame_width_minus_1 + 1;
+        ctx->height = frame->frame_height_minus_1 + 1;
+
+        ctx->key_frame = frame->frame_type == AV1_FRAME_KEY && !frame->show_existing_frame;
+
+        switch (frame->frame_type) {
+        case AV1_FRAME_KEY:
+        case AV1_FRAME_INTRA_ONLY:
+            ctx->pict_type = AV_PICTURE_TYPE_I;
+            break;
+        case AV1_FRAME_INTER:
+            ctx->pict_type = AV_PICTURE_TYPE_P;
+            break;
+        case AV1_FRAME_SWITCH:
+            ctx->pict_type = AV_PICTURE_TYPE_SP;
+            break;
+        }
+        ctx->picture_structure = AV_PICTURE_STRUCTURE_FRAME;
+    }
+
+    switch (av1->bit_depth) {
+    case 8:
+        ctx->format = color->mono_chrome ? AV_PIX_FMT_GRAY8
+                                         : pix_fmts_8bit [color->subsampling_x][color->subsampling_y];
+        break;
+    case 10:
+        ctx->format = color->mono_chrome ? AV_PIX_FMT_GRAY10
+                                         : pix_fmts_10bit[color->subsampling_x][color->subsampling_y];
+        break;
+    case 12:
+        ctx->format = color->mono_chrome ? AV_PIX_FMT_GRAY12
+                                         : pix_fmts_12bit[color->subsampling_x][color->subsampling_y];
+        break;
+    }
+    av_assert2(ctx->format != AV_PIX_FMT_NONE);
+
+    if (!color->subsampling_x && !color->subsampling_y &&
+        color->matrix_coefficients       == AVCOL_SPC_RGB &&
+        color->color_primaries           == AVCOL_PRI_BT709 &&
+        color->transfer_characteristics  == AVCOL_TRC_IEC61966_2_1)
+        ctx->format = pix_fmts_rgb[color->high_bitdepth + color->twelve_bit];
+
+    avctx->profile = seq->seq_profile;
+    avctx->level   = seq->seq_level_idx[0];
+
+    avctx->colorspace = (enum AVColorSpace) color->matrix_coefficients;
+    avctx->color_primaries = (enum AVColorPrimaries) color->color_primaries;
+    avctx->color_trc = (enum AVColorTransferCharacteristic) color->transfer_characteristics;
+    avctx->color_range = color->color_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
+
+    if (seq->timing_info_present_flag) {
+        const AV1RawTimingInfo *timing = &seq->timing_info;
+        av_reduce(&avctx->framerate.den, &avctx->framerate.num,
+                  timing->num_units_in_display_tick, timing->time_scale, INT_MAX);
+    }
+
+end:
+    ff_cbs_fragment_reset(td);
+
+    s->cbc->log_ctx = NULL;
+
+    return size;
+}
+
+static const CodedBitstreamUnitType decompose_unit_types[] = {
+    AV1_OBU_TEMPORAL_DELIMITER,
+    AV1_OBU_SEQUENCE_HEADER,
+    AV1_OBU_FRAME_HEADER,
+    AV1_OBU_TILE_GROUP,
+    AV1_OBU_FRAME,
+};
+
+static av_cold int av1_parser_init(AVCodecParserContext *ctx)
+{
+    AV1ParseContext *s = ctx->priv_data;
+    int ret;
+
+    ret = ff_cbs_init(&s->cbc, AV_CODEC_ID_AV1, NULL);
+    if (ret < 0)
+        return ret;
+
+    s->cbc->decompose_unit_types    = decompose_unit_types;
+    s->cbc->nb_decompose_unit_types = FF_ARRAY_ELEMS(decompose_unit_types);
+
+    return 0;
+}
+
+static void av1_parser_close(AVCodecParserContext *ctx)
+{
+    AV1ParseContext *s = ctx->priv_data;
+
+    ff_cbs_fragment_free(&s->temporal_unit);
+    ff_cbs_close(&s->cbc);
+}
+
+const AVCodecParser ff_av1_parser = {
+    .codec_ids      = { AV_CODEC_ID_AV1 },
+    .priv_data_size = sizeof(AV1ParseContext),
+    .parser_init    = av1_parser_init,
+    .parser_close   = av1_parser_close,
+    .parser_parse   = av1_parser_parse,
+};