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+/*
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+ * Copyright (c) 2018 Ronald S. Bultje <rsbultje gmail com>
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+ * Copyright (c) 2018 James Almer <jamrial gmail com>
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+ *
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+ * This file is part of FFmpeg.
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+ *
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+ * FFmpeg is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU Lesser General Public
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+ * License as published by the Free Software Foundation; either
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+ * version 2.1 of the License, or (at your option) any later version.
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+ *
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+ * FFmpeg is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * Lesser General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU Lesser General Public
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+ * License along with FFmpeg; if not, write to the Free Software
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+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+ */
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+
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+#include <dav1d/dav1d.h>
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+
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+#include "libavutil/avassert.h"
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+#include "libavutil/fifo.h"
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+#include "libavutil/opt.h"
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+
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+#include "avcodec.h"
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+#include "decode.h"
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+#include "internal.h"
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+
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+typedef struct Libdav1dContext {
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+ AVClass *class;
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+ Dav1dContext *c;
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+
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+ AVFifoBuffer *cache;
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+ Dav1dData data;
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+ int tile_threads;
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+} Libdav1dContext;
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+
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+static av_cold int libdav1d_init(AVCodecContext *c)
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+{
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+ Libdav1dContext *dav1d = c->priv_data;
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+ Dav1dSettings s;
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+ int res;
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+
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+ av_log(c, AV_LOG_INFO, "libdav1d %s\n", dav1d_version());
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+
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+ dav1d_default_settings(&s);
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+ s.n_tile_threads = dav1d->tile_threads;
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+ s.n_frame_threads = FFMIN(c->thread_count ? c->thread_count : av_cpu_count(), 256);
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+
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+ dav1d->cache = av_fifo_alloc(8 * sizeof(AVPacket));
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+ if (!dav1d->cache)
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+ return AVERROR(ENOMEM);
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+
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+ res = dav1d_open(&dav1d->c, &s);
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+ if (res < 0)
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+ return AVERROR(ENOMEM);
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+
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+ return 0;
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+}
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+
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+static void libdav1d_flush(AVCodecContext *c)
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+{
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+ Libdav1dContext *dav1d = c->priv_data;
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+
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+ av_fifo_reset(dav1d->cache);
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+ dav1d_data_unref(&dav1d->data);
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+ dav1d_flush(dav1d->c);
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+}
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+
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+static int libdav1d_fifo_write(void *src, void *dst, int dst_size) {
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+ AVPacket *pkt_dst = dst, *pkt_src = src;
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+
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+ av_assert2(dst_size >= sizeof(AVPacket));
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+
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+ pkt_src->buf = NULL;
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+ av_packet_free_side_data(pkt_src);
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+ *pkt_dst = *pkt_src;
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+
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+ return sizeof(AVPacket);
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+}
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+
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+static void libdav1d_data_free(const uint8_t *data, void *opaque) {
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+ AVBufferRef *buf = opaque;
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+
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+ av_buffer_unref(&buf);
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+}
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+
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+static void libdav1d_frame_free(void *opaque, uint8_t *data) {
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+ Dav1dPicture p = { 0 };
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+
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+ p.ref = opaque;
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+ p.data[0] = (void *) 0x1; // this has to be non-NULL
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+ dav1d_picture_unref(&p);
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+}
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+
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+static const enum AVPixelFormat pix_fmt[][2] = {
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+ [DAV1D_PIXEL_LAYOUT_I400] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY10 },
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+ [DAV1D_PIXEL_LAYOUT_I420] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P10 },
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+ [DAV1D_PIXEL_LAYOUT_I422] = { AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV422P10 },
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+ [DAV1D_PIXEL_LAYOUT_I444] = { AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV444P10 },
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+};
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+
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+// TODO: Update once 12bit support is added.
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+static const int profile[] = {
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+ [DAV1D_PIXEL_LAYOUT_I400] = FF_PROFILE_AV1_MAIN,
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+ [DAV1D_PIXEL_LAYOUT_I420] = FF_PROFILE_AV1_MAIN,
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+ [DAV1D_PIXEL_LAYOUT_I422] = FF_PROFILE_AV1_PROFESSIONAL,
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+ [DAV1D_PIXEL_LAYOUT_I444] = FF_PROFILE_AV1_HIGH,
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+};
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+
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+static int libdav1d_receive_frame(AVCodecContext *c, AVFrame *frame)
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+{
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+ Libdav1dContext *dav1d = c->priv_data;
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+ Dav1dData *data = &dav1d->data;
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+ AVPacket pkt = { 0 };
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+ Dav1dPicture p = { 0 };
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+ int res;
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+
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+ if (!data->sz) {
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+ res = ff_decode_get_packet(c, &pkt);
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+ if (res < 0 && res != AVERROR_EOF)
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+ return res;
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+
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+ if (pkt.size) {
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+ if (!av_fifo_space(dav1d->cache)) {
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+ res = av_fifo_grow(dav1d->cache, 8 * sizeof(pkt));
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+ if (res < 0) {
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+ av_packet_unref(&pkt);
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+ return res;
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+ }
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+ }
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+
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+ res = dav1d_data_wrap(data, pkt.data, pkt.size, libdav1d_data_free, pkt.buf);
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+ if (res < 0) {
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+ av_packet_unref(&pkt);
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+ return res;
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+ }
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+
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+ av_fifo_generic_write(dav1d->cache, &pkt, sizeof(pkt), libdav1d_fifo_write);
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+ } else {
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+ data = NULL;
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+ }
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+ }
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+
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+ res = dav1d_decode(dav1d->c, data, &p);
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+ if (res < 0) {
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+ if (res == -EINVAL)
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+ res = AVERROR_INVALIDDATA;
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+ else if (res == -EAGAIN && c->internal->draining)
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+ res = AVERROR_EOF;
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+
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+ return res;
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+ }
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+
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+ av_assert0(p.data[0] != NULL);
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+
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+ av_fifo_generic_read(dav1d->cache, &pkt, sizeof(pkt), NULL);
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+
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+ frame->buf[0] = av_buffer_create(NULL, 0, libdav1d_frame_free,
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+ p.ref, AV_BUFFER_FLAG_READONLY);
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+ if (!frame->buf[0]) {
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+ dav1d_picture_unref(&p);
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+ return AVERROR(ENOMEM);
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+ }
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+
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+ frame->data[0] = p.data[0];
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+ frame->data[1] = p.data[1];
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+ frame->data[2] = p.data[2];
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+ frame->linesize[0] = p.stride[0];
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+ frame->linesize[1] = p.stride[1];
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+ frame->linesize[2] = p.stride[1];
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+
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+ c->profile = profile[p.p.layout];
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+ frame->format = c->pix_fmt = pix_fmt[p.p.layout][p.p.bpc == 10];
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+ frame->width = p.p.w;
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+ frame->height = p.p.h;
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+ if (c->width != p.p.w || c->height != p.p.h) {
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+ res = ff_set_dimensions(c, p.p.w, p.p.h);
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+ if (res < 0)
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+ return res;
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+ }
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+
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+ switch (p.p.chr) {
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+ case DAV1D_CHR_VERTICAL:
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+ frame->chroma_location = c->chroma_sample_location = AVCHROMA_LOC_LEFT;
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+ break;
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+ case DAV1D_CHR_COLOCATED:
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+ frame->chroma_location = c->chroma_sample_location = AVCHROMA_LOC_TOPLEFT;
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+ break;
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+ }
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+ frame->colorspace = c->colorspace = (enum AVColorSpace) p.p.mtrx;
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+ frame->color_primaries = c->color_primaries = (enum AVColorPrimaries) p.p.pri;
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+ frame->color_trc = c->color_trc = (enum AVColorTransferCharacteristic) p.p.trc;
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+ frame->color_range = c->color_range = p.p.fullrange ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
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+
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+ // match timestamps and packet size
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+ frame->pts = frame->best_effort_timestamp = pkt.pts;
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+#if FF_API_PKT_PTS
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+FF_DISABLE_DEPRECATION_WARNINGS
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+ frame->pkt_pts = pkt.pts;
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+FF_ENABLE_DEPRECATION_WARNINGS
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+#endif
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+ frame->pkt_dts = pkt.dts;
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+ frame->pkt_pos = pkt.pos;
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+ frame->pkt_size = pkt.size;
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+ frame->pkt_duration = pkt.duration;
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+ frame->key_frame = p.p.type == DAV1D_FRAME_TYPE_KEY;
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+
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+ switch (p.p.type) {
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+ case DAV1D_FRAME_TYPE_KEY:
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+ case DAV1D_FRAME_TYPE_INTRA:
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+ frame->pict_type = AV_PICTURE_TYPE_I;
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+ break;
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+ case DAV1D_FRAME_TYPE_INTER:
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+ frame->pict_type = AV_PICTURE_TYPE_P;
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+ break;
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+ case DAV1D_FRAME_TYPE_SWITCH:
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+ frame->pict_type = AV_PICTURE_TYPE_SP;
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+ break;
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+ default:
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+ return AVERROR_INVALIDDATA;
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+ }
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+
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+ return 0;
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+}
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+
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+static av_cold int libdav1d_close(AVCodecContext *c)
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+{
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+ Libdav1dContext *dav1d = c->priv_data;
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+
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+ av_fifo_freep(&dav1d->cache);
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+ dav1d_data_unref(&dav1d->data);
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+ dav1d_close(&dav1d->c);
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+
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+ return 0;
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+}
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+
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+#define OFFSET(x) offsetof(Libdav1dContext, x)
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+#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
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+static const AVOption libdav1d_options[] = {
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+ { "tilethreads", "Tile threads", OFFSET(tile_threads), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, 64, VD, NULL },
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+ { NULL }
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+};
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+
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+static const AVClass libdav1d_class = {
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+ .class_name = "libdav1d decoder",
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+ .item_name = av_default_item_name,
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+ .option = libdav1d_options,
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+ .version = LIBAVUTIL_VERSION_INT,
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+};
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+
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+AVCodec ff_libdav1d_decoder = {
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+ .name = "libdav1d",
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+ .long_name = NULL_IF_CONFIG_SMALL("dav1d AV1 decoder by VideoLAN"),
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+ .type = AVMEDIA_TYPE_VIDEO,
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+ .id = AV_CODEC_ID_AV1,
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+ .priv_data_size = sizeof(Libdav1dContext),
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+ .init = libdav1d_init,
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+ .close = libdav1d_close,
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+ .flush = libdav1d_flush,
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+ .receive_frame = libdav1d_receive_frame,
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+ .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,
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+ .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP |
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+ FF_CODEC_CAP_SETS_PKT_DTS,
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+ .priv_class = &libdav1d_class,
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+ .wrapper_name = "libdav1d",
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+};
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James Almer