ffmpeg/libavcodec/libdav1d.c

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/*
* Copyright (c) 2018 Ronald S. Bultje <rsbultje gmail com>
* Copyright (c) 2018 James Almer <jamrial gmail com>
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <dav1d/dav1d.h>
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "decode.h"
#include "internal.h"
typedef struct Libdav1dContext {
AVClass *class;
Dav1dContext *c;
Dav1dData data;
int tile_threads;
int apply_grain;
} Libdav1dContext;
static av_cold int libdav1d_init(AVCodecContext *c)
{
Libdav1dContext *dav1d = c->priv_data;
Dav1dSettings s;
int res;
av_log(c, AV_LOG_INFO, "libdav1d %s\n", dav1d_version());
dav1d_default_settings(&s);
s.n_tile_threads = dav1d->tile_threads;
s.apply_grain = dav1d->apply_grain;
s.n_frame_threads = FFMIN(c->thread_count ? c->thread_count : av_cpu_count(), DAV1D_MAX_FRAME_THREADS);
res = dav1d_open(&dav1d->c, &s);
if (res < 0)
return AVERROR(ENOMEM);
return 0;
}
static void libdav1d_flush(AVCodecContext *c)
{
Libdav1dContext *dav1d = c->priv_data;
dav1d_data_unref(&dav1d->data);
dav1d_flush(dav1d->c);
}
static void libdav1d_data_free(const uint8_t *data, void *opaque) {
AVBufferRef *buf = opaque;
av_buffer_unref(&buf);
}
static void libdav1d_frame_free(void *opaque, uint8_t *data) {
Dav1dPicture *p = opaque;
dav1d_picture_unref(p);
av_free(p);
}
static const enum AVPixelFormat pix_fmt[][3] = {
[DAV1D_PIXEL_LAYOUT_I400] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12 },
[DAV1D_PIXEL_LAYOUT_I420] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV420P12 },
[DAV1D_PIXEL_LAYOUT_I422] = { AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV422P12 },
[DAV1D_PIXEL_LAYOUT_I444] = { AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV444P12 },
};
static int libdav1d_receive_frame(AVCodecContext *c, AVFrame *frame)
{
Libdav1dContext *dav1d = c->priv_data;
Dav1dData *data = &dav1d->data;
Dav1dPicture *p;
int res;
if (!data->sz) {
AVPacket pkt = { 0 };
res = ff_decode_get_packet(c, &pkt);
if (res < 0 && res != AVERROR_EOF)
return res;
if (pkt.size) {
res = dav1d_data_wrap(data, pkt.data, pkt.size, libdav1d_data_free, pkt.buf);
if (res < 0) {
av_packet_unref(&pkt);
return res;
}
data->m.timestamp = pkt.pts;
pkt.buf = NULL;
av_packet_unref(&pkt);
}
}
res = dav1d_send_data(dav1d->c, data);
if (res < 0) {
if (res == -EINVAL)
res = AVERROR_INVALIDDATA;
if (res != -EAGAIN)
return res;
}
p = av_mallocz(sizeof(*p));
if (!p)
return AVERROR(ENOMEM);
res = dav1d_get_picture(dav1d->c, p);
if (res < 0) {
if (res == -EINVAL)
res = AVERROR_INVALIDDATA;
else if (res == -EAGAIN && c->internal->draining)
res = AVERROR_EOF;
av_free(p);
return res;
}
av_assert0(p->data[0] != NULL);
frame->buf[0] = av_buffer_create(NULL, 0, libdav1d_frame_free,
p, AV_BUFFER_FLAG_READONLY);
if (!frame->buf[0]) {
dav1d_picture_unref(p);
av_free(p);
return AVERROR(ENOMEM);
}
frame->data[0] = p->data[0];
frame->data[1] = p->data[1];
frame->data[2] = p->data[2];
frame->linesize[0] = p->stride[0];
frame->linesize[1] = p->stride[1];
frame->linesize[2] = p->stride[1];
c->profile = p->seq_hdr->profile;
frame->format = c->pix_fmt = pix_fmt[p->p.layout][p->seq_hdr->hbd];
frame->width = p->p.w;
frame->height = p->p.h;
if (c->width != p->p.w || c->height != p->p.h) {
res = ff_set_dimensions(c, p->p.w, p->p.h);
if (res < 0)
return res;
}
switch (p->seq_hdr->chr) {
case DAV1D_CHR_VERTICAL:
frame->chroma_location = c->chroma_sample_location = AVCHROMA_LOC_LEFT;
break;
case DAV1D_CHR_COLOCATED:
frame->chroma_location = c->chroma_sample_location = AVCHROMA_LOC_TOPLEFT;
break;
}
frame->colorspace = c->colorspace = (enum AVColorSpace) p->seq_hdr->mtrx;
frame->color_primaries = c->color_primaries = (enum AVColorPrimaries) p->seq_hdr->pri;
frame->color_trc = c->color_trc = (enum AVColorTransferCharacteristic) p->seq_hdr->trc;
frame->color_range = c->color_range = p->seq_hdr->color_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
// match timestamps and packet size
frame->pts = p->m.timestamp;
#if FF_API_PKT_PTS
FF_DISABLE_DEPRECATION_WARNINGS
frame->pkt_pts = p->m.timestamp;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
frame->pkt_dts = p->m.timestamp;
frame->key_frame = p->frame_hdr->frame_type == DAV1D_FRAME_TYPE_KEY;
switch (p->frame_hdr->frame_type) {
case DAV1D_FRAME_TYPE_KEY:
case DAV1D_FRAME_TYPE_INTRA:
frame->pict_type = AV_PICTURE_TYPE_I;
break;
case DAV1D_FRAME_TYPE_INTER:
frame->pict_type = AV_PICTURE_TYPE_P;
break;
case DAV1D_FRAME_TYPE_SWITCH:
frame->pict_type = AV_PICTURE_TYPE_SP;
break;
default:
return AVERROR_INVALIDDATA;
}
return 0;
}
static av_cold int libdav1d_close(AVCodecContext *c)
{
Libdav1dContext *dav1d = c->priv_data;
dav1d_data_unref(&dav1d->data);
dav1d_close(&dav1d->c);
return 0;
}
#define OFFSET(x) offsetof(Libdav1dContext, x)
#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
static const AVOption libdav1d_options[] = {
{ "tilethreads", "Tile threads", OFFSET(tile_threads), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, DAV1D_MAX_TILE_THREADS, VD },
{ "filmgrain", "Apply Film Grain", OFFSET(apply_grain), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VD },
{ NULL }
};
static const AVClass libdav1d_class = {
.class_name = "libdav1d decoder",
.item_name = av_default_item_name,
.option = libdav1d_options,
.version = LIBAVUTIL_VERSION_INT,
};
AVCodec ff_libdav1d_decoder = {
.name = "libdav1d",
.long_name = NULL_IF_CONFIG_SMALL("dav1d AV1 decoder by VideoLAN"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_AV1,
.priv_data_size = sizeof(Libdav1dContext),
.init = libdav1d_init,
.close = libdav1d_close,
.flush = libdav1d_flush,
.receive_frame = libdav1d_receive_frame,
.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_SETS_PKT_DTS,
.priv_class = &libdav1d_class,
.wrapper_name = "libdav1d",
};