Function encode_frame

libavcodec/exrenc.c:350–519

}

static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                        const AVFrame *frame, int *got_packet)
{
    EXRContext *s = avctx->priv_data;
    PutByteContext *pb = &s->pb;
    int64_t offset;
    int ret;
    int64_t out_size = 2048LL + avctx->height * 16LL +
                      av_image_get_buffer_size(avctx->pix_fmt,
                                               avctx->width,
                                               avctx->height, 64) * 3LL / 2;

    if ((ret = ff_get_encode_buffer(avctx, pkt, out_size, 0)) < 0)
        return ret;

    bytestream2_init_writer(pb, pkt->data, pkt->size);

    bytestream2_put_le32(pb, 20000630);
    bytestream2_put_byte(pb, 2);
    bytestream2_put_le24(pb, 0);
    bytestream2_put_buffer(pb, "channels\0chlist\0", 16);
    bytestream2_put_le32(pb, s->planes * 18 + 1);

    for (int p = 0; p < s->planes; p++) {
        bytestream2_put_byte(pb, s->ch_names[p]);
        bytestream2_put_byte(pb, 0);
        bytestream2_put_le32(pb, s->pixel_type);
        bytestream2_put_le32(pb, 0);
        bytestream2_put_le32(pb, 1);
        bytestream2_put_le32(pb, 1);
    }
    bytestream2_put_byte(pb, 0);

    bytestream2_put_buffer(pb, "compression\0compression\0", 24);
    bytestream2_put_le32(pb, 1);
    bytestream2_put_byte(pb, s->compression);

    bytestream2_put_buffer(pb, "dataWindow\0box2i\0", 17);
    bytestream2_put_le32(pb, 16);
    bytestream2_put_le32(pb, 0);
    bytestream2_put_le32(pb, 0);
    bytestream2_put_le32(pb, avctx->width - 1);
    bytestream2_put_le32(pb, avctx->height - 1);

    bytestream2_put_buffer(pb, "displayWindow\0box2i\0", 20);
    bytestream2_put_le32(pb, 16);
    bytestream2_put_le32(pb, 0);
    bytestream2_put_le32(pb, 0);
    bytestream2_put_le32(pb, avctx->width - 1);
    bytestream2_put_le32(pb, avctx->height - 1);

    bytestream2_put_buffer(pb, "lineOrder\0lineOrder\0", 20);
    bytestream2_put_le32(pb, 1);
    bytestream2_put_byte(pb, 0);

    bytestream2_put_buffer(pb, "screenWindowCenter\0v2f\0", 23);
    bytestream2_put_le32(pb, 8);
    bytestream2_put_le64(pb, 0);