avcodec: add missing files missed in previous commits

Fixes compilation.

Signed-off-by: James Almer <jamrial@gmail.com>

2 files changed, 272 insertions, 0 deletions

diff --git a/libavcodec/avs2_parser.c b/libavcodec/avs2_parser.c
new file mode 100644
index 0000000000..520e98a9b4
--- /dev/null
+++ b/libavcodec/avs2_parser.c
@@ -0,0 +1,95 @@
+/*
+ * AVS2/IEEE 1857.4 video parser.
+ * Copyright (c) 2018  Huiwen Ren <hwrenx@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 "parser.h"
+
+#define SLICE_MAX_START_CODE    0x000001af
+
+#define ISPIC(x)  ((x) == 0xB3 || (x) == 0xB6)
+#define ISUNIT(x) ((x) == 0xB0 || (x) == 0xB1 || (x) == 0xB2 || ISPIC(x))
+
+static int avs2_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size)
+{
+    int pic_found  = pc->frame_start_found;
+    uint32_t state = pc->state;
+    int cur = 0;
+
+    if (!pic_found) {
+        for (; cur < buf_size; ++cur) {
+            state = (state<<8) | buf[cur];
+            if (ISUNIT(buf[cur])){
+                ++cur;
+                pic_found = 1;
+                break;
+            }
+        }
+    }
+
+    if (pic_found) {
+        if (!buf_size)
+            return END_NOT_FOUND;
+        for (; cur < buf_size; ++cur) {
+            state = (state << 8) | buf[cur];
+            if ((state & 0xFFFFFF00) == 0x100 && state > SLICE_MAX_START_CODE) {
+                pc->frame_start_found = 0;
+                pc->state = -1;
+                return cur - 3;
+            }
+        }
+    }
+
+    pc->frame_start_found = pic_found;
+    pc->state = state;
+
+    return END_NOT_FOUND;
+}
+
+static int avs2_parse(AVCodecParserContext *s, AVCodecContext *avctx,
+                      const uint8_t **poutbuf, int *poutbuf_size,
+                      const uint8_t *buf, int buf_size)
+{
+    ParseContext *pc = s->priv_data;
+    int next;
+
+    if (s->flags & PARSER_FLAG_COMPLETE_FRAMES)  {
+        next = buf_size;
+    } else {
+        next = avs2_find_frame_end(pc, buf, buf_size);
+        if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) {
+            *poutbuf = NULL;
+            *poutbuf_size = 0;
+            return buf_size;
+        }
+    }
+
+    *poutbuf = buf;
+    *poutbuf_size = buf_size;
+
+    return next;
+}
+
+AVCodecParser ff_avs2_parser = {
+    .codec_ids      = { AV_CODEC_ID_AVS2 },
+    .priv_data_size = sizeof(ParseContext),
+    .parser_parse   = avs2_parse,
+    .parser_close   = ff_parse_close,
+    .split          = ff_mpeg4video_split,
+};
diff --git a/libavcodec/libdavs2.c b/libavcodec/libdavs2.c
new file mode 100644
index 0000000000..12db1f9da7
--- /dev/null
+++ b/libavcodec/libdavs2.c
@@ -0,0 +1,177 @@
+/*
+ * AVS2 decoding using the davs2 library
+ *
+ * Copyright (C) 2018 Yiqun Xu, <yiqun.xu@vipl.ict.ac.cn>
+ *                    Falei Luo, <falei.luo@gmail.com>
+ *                    Huiwen Ren, <hwrenx@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 "libavutil/common.h"
+#include "libavutil/avutil.h"
+#include "avcodec.h"
+#include "libavutil/imgutils.h"
+#include "internal.h"
+
+#include "davs2.h"
+
+typedef struct DAVS2Context {
+    void *decoder;
+
+    AVFrame *frame;
+    davs2_param_t    param;      // decoding parameters
+    davs2_packet_t   packet;     // input bitstream
+
+    int decoded_frames;
+
+    davs2_picture_t  out_frame;  // output data, frame data
+    davs2_seq_info_t headerset;  // output data, sequence header
+
+}DAVS2Context;
+
+static av_cold int davs2_init(AVCodecContext *avctx)
+{
+    DAVS2Context *cad = avctx->priv_data;
+
+    /* init the decoder */
+    cad->param.threads      = avctx->thread_count;
+    cad->param.info_level   = 0;
+    cad->decoder            = davs2_decoder_open(&cad->param);
+
+    if (!cad->decoder) {
+        av_log(avctx, AV_LOG_ERROR, "decoder created error.");
+        return AVERROR(EINVAL);
+    }
+
+    av_log(avctx, AV_LOG_VERBOSE, "decoder created. %p\n", cad->decoder);
+    return 0;
+}
+
+static int davs2_dump_frames(AVCodecContext *avctx, davs2_picture_t *pic,
+                             davs2_seq_info_t *headerset, int ret_type, AVFrame *frame)
+{
+    DAVS2Context *cad    = avctx->priv_data;
+    int bytes_per_sample = pic->bytes_per_sample;
+    int plane = 0;
+    int line  = 0;
+
+    if (!headerset)
+        return 0;
+
+    if (!pic || ret_type == DAVS2_GOT_HEADER) {
+        avctx->width     = headerset->width;
+        avctx->height    = headerset->height;
+        avctx->pix_fmt   = headerset->output_bit_depth == 10 ?
+                           AV_PIX_FMT_YUV420P10 : AV_PIX_FMT_YUV420P;
+
+        avctx->framerate = av_d2q(headerset->frame_rate,4096);
+        return 0;
+    }
+
+    for (plane = 0; plane < 3; ++plane) {
+        int size_line = pic->widths[plane] * bytes_per_sample;
+        frame->buf[plane]  = av_buffer_alloc(size_line * pic->lines[plane]);
+
+        if (!frame->buf[plane]){
+            av_log(avctx, AV_LOG_ERROR, "dump error: alloc failed.\n");
+            return AVERROR(EINVAL);
+        }
+
+        frame->data[plane]     = frame->buf[plane]->data;
+        frame->linesize[plane] = pic->widths[plane];
+
+        for (line = 0; line < pic->lines[plane]; ++line)
+            memcpy(frame->data[plane] + line * size_line,
+                   pic->planes[plane] + line * pic->strides[plane],
+                   pic->widths[plane] * bytes_per_sample);
+    }
+
+    frame->width     = cad->headerset.width;
+    frame->height    = cad->headerset.height;
+    frame->pts       = cad->out_frame.pts;
+    frame->pict_type = pic->type;
+    frame->format    = avctx->pix_fmt;
+
+    cad->decoded_frames++;
+    return 1;
+}
+
+static av_cold int davs2_end(AVCodecContext *avctx)
+{
+    DAVS2Context *cad = avctx->priv_data;
+
+    /* close the decoder */
+    if (cad->decoder) {
+        davs2_decoder_close(cad->decoder);
+        cad->decoder = NULL;
+    }
+
+    return 0;
+}
+
+static int davs2_decode_frame(AVCodecContext *avctx, void *data,
+                              int *got_frame, AVPacket *avpkt)
+{
+    DAVS2Context *cad      = avctx->priv_data;
+    int           buf_size = avpkt->size;
+    uint8_t      *buf_ptr  = avpkt->data;
+    AVFrame      *frame    = data;
+    int           ret      = DAVS2_DEFAULT;
+
+    if (!buf_size) {
+        return 0;
+    }
+
+    cad->packet.data = buf_ptr;
+    cad->packet.len  = buf_size;
+    cad->packet.pts  = avpkt->pts;
+    cad->packet.dts  = avpkt->dts;
+
+    ret = davs2_decoder_send_packet(cad->decoder, &cad->packet);
+
+
+    if (ret == DAVS2_ERROR) {
+        av_log(avctx, AV_LOG_ERROR, "Decoder error: can't read packet\n");
+        return AVERROR(EINVAL);
+    }
+
+    ret = davs2_decoder_recv_frame(cad->decoder, &cad->headerset, &cad->out_frame);
+
+    if (ret != DAVS2_DEFAULT) {
+        *got_frame = davs2_dump_frames(avctx, &cad->out_frame, &cad->headerset, ret, frame);
+        davs2_decoder_frame_unref(cad->decoder, &cad->out_frame);
+    }
+
+    return buf_size;
+}
+
+AVCodec ff_libdavs2_decoder = {
+    .name           = "libdavs2",
+    .long_name      = NULL_IF_CONFIG_SMALL("Decoder for AVS2/IEEE 1857.4"),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_AVS2,
+    .priv_data_size = sizeof(DAVS2Context),
+    .init           = davs2_init,
+    .close          = davs2_end,
+    .decode         = davs2_decode_frame,
+    .capabilities   =  AV_CODEC_CAP_DELAY,//AV_CODEC_CAP_DR1 |
+    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P10,
+                                                     AV_PIX_FMT_NONE },
+    .wrapper_name   = "libdavs2",
+};