C++ (Cpp) write_codebooks Examples

Example #1

File: roqvideoenc.c Project: JSinglan/libav

static void roq_encode_video(RoqContext *enc)
{
    RoqTempdata *tempData = enc->tmpData;
    int i;

    memset(tempData, 0, sizeof(*tempData));

    create_cel_evals(enc, tempData);

    generate_new_codebooks(enc, tempData);

    if (enc->framesSinceKeyframe >= 1) {
        motion_search(enc, 8);
        motion_search(enc, 4);
    }

 retry_encode:
    for (i=0; i<enc->width*enc->height/64; i++)
        gather_data_for_cel(tempData->cel_evals + i, enc, tempData);

    /* Quake 3 can't handle chunks bigger than 65535 bytes */
    if (tempData->mainChunkSize/8 > 65535) {
        av_log(enc->avctx, AV_LOG_ERROR,
               "Warning, generated a frame too big (%d > 65535), "
               "try using a smaller qscale value.\n",
               tempData->mainChunkSize/8);
        enc->lambda *= 1.5;
        tempData->mainChunkSize = 0;
        memset(tempData->used_option, 0, sizeof(tempData->used_option));
        memset(tempData->codebooks.usedCB4, 0,
               sizeof(tempData->codebooks.usedCB4));
        memset(tempData->codebooks.usedCB2, 0,
               sizeof(tempData->codebooks.usedCB2));

        goto retry_encode;
    }

    remap_codebooks(enc, tempData);

    write_codebooks(enc, tempData);

    reconstruct_and_encode_image(enc, tempData, enc->width, enc->height,
                                 enc->width*enc->height/64);

    enc->avctx->coded_frame = enc->current_frame;

    /* Rotate frame history */
    FFSWAP(AVFrame *, enc->current_frame, enc->last_frame);
    FFSWAP(motion_vect *, enc->last_motion4, enc->this_motion4);
    FFSWAP(motion_vect *, enc->last_motion8, enc->this_motion8);

    av_free(tempData->cel_evals);
    av_free(tempData->closest_cb2);

    enc->framesSinceKeyframe++;
}

Example #2

File: roqvideoenc.c Project: 119/dropcam_for_iphone

static void roq_encode_video(RoqContext *enc)
{
    RoqTempdata *tempData = enc->tmpData;
    int i;

    memset(tempData, 0, sizeof(*tempData));

    create_cel_evals(enc, tempData);

    generate_new_codebooks(enc, tempData);

    if (enc->framesSinceKeyframe >= 1) {
        motion_search(enc, 8);
        motion_search(enc, 4);
    }

 retry_encode:
    for (i=0; i<enc->width*enc->height/64; i++)
        gather_data_for_cel(tempData->cel_evals + i, enc, tempData);

    /* Quake 3 can't handle chunks bigger than 65536 bytes */
    if (tempData->mainChunkSize/8 > 65536) {
        enc->lambda *= .8;
        goto retry_encode;
    }

    remap_codebooks(enc, tempData);

    write_codebooks(enc, tempData);

    reconstruct_and_encode_image(enc, tempData, enc->width, enc->height,
                                 enc->width*enc->height/64);

    enc->avctx->coded_frame = enc->current_frame;

    /* Rotate frame history */
    FFSWAP(AVFrame *, enc->current_frame, enc->last_frame);
    FFSWAP(motion_vect *, enc->last_motion4, enc->this_motion4);
    FFSWAP(motion_vect *, enc->last_motion8, enc->this_motion8);

    av_free(tempData->cel_evals);
    av_free(tempData->closest_cb2);

    enc->framesSinceKeyframe++;
}

Example #3

File: roqvideoenc.c Project: LinuxCao/ffmpeg-2.8.4-for-x86-linux

static int roq_encode_video(RoqContext *enc)
{
    RoqTempdata *tempData = enc->tmpData;
    int i, ret;

    memset(tempData, 0, sizeof(*tempData));

    ret = create_cel_evals(enc, tempData);
    if (ret < 0)
        return ret;

    ret = generate_new_codebooks(enc, tempData);
    if (ret < 0)
        return ret;

    if (enc->framesSinceKeyframe >= 1) {
        motion_search(enc, 8);
        motion_search(enc, 4);
    }

 retry_encode:
    for (i=0; i<enc->width*enc->height/64; i++)
        gather_data_for_cel(tempData->cel_evals + i, enc, tempData);

    /* Quake 3 can't handle chunks bigger than 65535 bytes */
    if (tempData->mainChunkSize/8 > 65535 && enc->quake3_compat) {
        if (enc->lambda > 100000) {
            av_log(enc->avctx, AV_LOG_ERROR, "Cannot encode video in Quake compatible form\n");
            return AVERROR(EINVAL);
        }
        av_log(enc->avctx, AV_LOG_ERROR,
               "Warning, generated a frame too big for Quake (%d > 65535), "
               "now switching to a bigger qscale value.\n",
               tempData->mainChunkSize/8);
        enc->lambda *= 1.5;
        tempData->mainChunkSize = 0;
        memset(tempData->used_option, 0, sizeof(tempData->used_option));
        memset(tempData->codebooks.usedCB4, 0,
               sizeof(tempData->codebooks.usedCB4));
        memset(tempData->codebooks.usedCB2, 0,
               sizeof(tempData->codebooks.usedCB2));

        goto retry_encode;
    }

    remap_codebooks(enc, tempData);

    write_codebooks(enc, tempData);

    reconstruct_and_encode_image(enc, tempData, enc->width, enc->height,
                                 enc->width*enc->height/64);

    /* Rotate frame history */
    FFSWAP(AVFrame *, enc->current_frame, enc->last_frame);
    FFSWAP(motion_vect *, enc->last_motion4, enc->this_motion4);
    FFSWAP(motion_vect *, enc->last_motion8, enc->this_motion8);

    av_freep(&tempData->cel_evals);
    av_freep(&tempData->closest_cb2);

    enc->framesSinceKeyframe++;

    return 0;
}