Function image_available

libavdevice/android_camera.c:377–487

}

static void image_available(void *context, AImageReader *reader)
{
    AVFormatContext *avctx = context;
    AndroidCameraCtx *ctx = avctx->priv_data;
    media_status_t media_status;
    int ret = 0;

    AImage *image;
    int64_t image_timestamp;
    int32_t image_linestrides[4];
    uint8_t *image_plane_data[4];
    int plane_data_length[4];

    AVPacket pkt;
    int pkt_buffer_size = 0;

    media_status = AImageReader_acquireLatestImage(reader, &image);
    if (media_status != AMEDIA_OK) {
        if (media_status == AMEDIA_IMGREADER_NO_BUFFER_AVAILABLE) {
            av_log(avctx, AV_LOG_WARNING,
                   "An image reader frame was discarded");
        } else {
            av_log(avctx, AV_LOG_ERROR,
                   "Failed to acquire latest image from image reader, error: %s.\n",
                   media_status_string(media_status));
            ret = AVERROR_EXTERNAL;
        }
        goto error;
    }

    // Silently drop frames when exit is set
    if (atomic_load(&ctx->exit)) {
        goto error;
    }

    // Determine actual image format
    if (!atomic_load(&ctx->got_image_format)) {
        ret = get_image_format(avctx, image);
        if (ret < 0) {
            av_log(avctx, AV_LOG_ERROR,
                   "Could not get image format of camera.\n");
            goto error;
        } else {
            atomic_store(&ctx->got_image_format, 1);
        }
    }

    pkt_buffer_size = av_image_get_buffer_size(ctx->image_format, ctx->width, ctx->height, 1);
    AImage_getTimestamp(image, &image_timestamp);

    AImage_getPlaneRowStride(image, 0, &image_linestrides[0]);
    AImage_getPlaneData(image, 0, &image_plane_data[0], &plane_data_length[0]);

    switch (ctx->image_format) {
        case AV_PIX_FMT_YUV420P:
            AImage_getPlaneRowStride(image, 1, &image_linestrides[1]);
            AImage_getPlaneData(image, 1, &image_plane_data[1], &plane_data_length[1]);
            AImage_getPlaneRowStride(image, 2, &image_linestrides[2]);