C++ (Cpp) ffmmal_csp_to_av_csp示例

示例#1

文件： mmaldec.c 项目： gbeauchesne/FFmpeg

static int ffmal_update_format(AVCodecContext *avctx)
{
    MMALDecodeContext *ctx = avctx->priv_data;
    MMAL_STATUS_T status;
    int ret = 0;
    MMAL_COMPONENT_T *decoder = ctx->decoder;
    MMAL_ES_FORMAT_T *format_out = decoder->output[0]->format;

    ffmmal_poolref_unref(ctx->pool_out);
    if (!(ctx->pool_out = av_mallocz(sizeof(*ctx->pool_out)))) {
        ret = AVERROR(ENOMEM);
        goto fail;
    }
    ctx->pool_out->refcount = 1;

    if (!format_out)
        goto fail;

    if ((status = mmal_port_parameter_set_uint32(decoder->output[0], MMAL_PARAMETER_EXTRA_BUFFERS, ctx->extra_buffers)))
        goto fail;

    if ((status = mmal_port_parameter_set_boolean(decoder->output[0], MMAL_PARAMETER_VIDEO_INTERPOLATE_TIMESTAMPS, 0)))
        goto fail;

    if (avctx->pix_fmt == AV_PIX_FMT_MMAL) {
        format_out->encoding = MMAL_ENCODING_OPAQUE;
    } else {
        format_out->encoding_variant = format_out->encoding = MMAL_ENCODING_I420;
    }

    if ((status = mmal_port_format_commit(decoder->output[0])))
        goto fail;

    if ((ret = ff_set_dimensions(avctx, format_out->es->video.crop.x + format_out->es->video.crop.width,
                                        format_out->es->video.crop.y + format_out->es->video.crop.height)) < 0)
        goto fail;

    if (format_out->es->video.par.num && format_out->es->video.par.den) {
        avctx->sample_aspect_ratio.num = format_out->es->video.par.num;
        avctx->sample_aspect_ratio.den = format_out->es->video.par.den;
    }

    avctx->colorspace = ffmmal_csp_to_av_csp(format_out->es->video.color_space);

    decoder->output[0]->buffer_size =
        FFMAX(decoder->output[0]->buffer_size_min, decoder->output[0]->buffer_size_recommended);
    decoder->output[0]->buffer_num =
        FFMAX(decoder->output[0]->buffer_num_min, decoder->output[0]->buffer_num_recommended) + ctx->extra_buffers;
    ctx->pool_out->pool = mmal_pool_create(decoder->output[0]->buffer_num,
                                           decoder->output[0]->buffer_size);
    if (!ctx->pool_out->pool) {
        ret = AVERROR(ENOMEM);
        goto fail;
    }

    return 0;

fail:
    return ret < 0 ? ret : AVERROR_UNKNOWN;
}

示例#2

文件： mmaldec.c 项目： atomnuker/FFmpeg-Daala

static int ffmal_update_format(AVCodecContext *avctx)
{
    MMALDecodeContext *ctx = avctx->priv_data;
    MMAL_STATUS_T status;
    int ret = 0;
    MMAL_COMPONENT_T *decoder = ctx->decoder;
    MMAL_ES_FORMAT_T *format_out = decoder->output[0]->format;
    MMAL_PARAMETER_VIDEO_INTERLACE_TYPE_T interlace_type;

    ffmmal_poolref_unref(ctx->pool_out);
    if (!(ctx->pool_out = av_mallocz(sizeof(*ctx->pool_out)))) {
        ret = AVERROR(ENOMEM);
        goto fail;
    }
    ctx->pool_out->refcount = 1;

    if (!format_out)
        goto fail;

    if ((status = mmal_port_parameter_set_uint32(decoder->output[0], MMAL_PARAMETER_EXTRA_BUFFERS, ctx->extra_buffers)))
        goto fail;

    if ((status = mmal_port_parameter_set_boolean(decoder->output[0], MMAL_PARAMETER_VIDEO_INTERPOLATE_TIMESTAMPS, 0)))
        goto fail;

    if (avctx->pix_fmt == AV_PIX_FMT_MMAL) {
        format_out->encoding = MMAL_ENCODING_OPAQUE;
    } else {
        format_out->encoding_variant = format_out->encoding = MMAL_ENCODING_I420;
    }

    if ((status = mmal_port_format_commit(decoder->output[0])))
        goto fail;

    interlace_type.hdr.id = MMAL_PARAMETER_VIDEO_INTERLACE_TYPE;
    interlace_type.hdr.size = sizeof(MMAL_PARAMETER_VIDEO_INTERLACE_TYPE_T);
    status = mmal_port_parameter_get(decoder->output[0], &interlace_type.hdr);
    if (status != MMAL_SUCCESS) {
        av_log(avctx, AV_LOG_ERROR, "Cannot read MMAL interlace information!\n");
    } else {
        ctx->interlaced_frame = (interlace_type.eMode != MMAL_InterlaceProgressive);
        ctx->top_field_first = (interlace_type.eMode == MMAL_InterlaceFieldsInterleavedUpperFirst);
    }

    if ((ret = ff_set_dimensions(avctx, format_out->es->video.crop.x + format_out->es->video.crop.width,
                                        format_out->es->video.crop.y + format_out->es->video.crop.height)) < 0)
        goto fail;

    if (format_out->es->video.par.num && format_out->es->video.par.den) {
        avctx->sample_aspect_ratio.num = format_out->es->video.par.num;
        avctx->sample_aspect_ratio.den = format_out->es->video.par.den;
    }
    if (format_out->es->video.frame_rate.num && format_out->es->video.frame_rate.den) {
        avctx->framerate.num = format_out->es->video.frame_rate.num;
        avctx->framerate.den = format_out->es->video.frame_rate.den;
    }

    avctx->colorspace = ffmmal_csp_to_av_csp(format_out->es->video.color_space);

    decoder->output[0]->buffer_size =
        FFMAX(decoder->output[0]->buffer_size_min, decoder->output[0]->buffer_size_recommended);
    decoder->output[0]->buffer_num =
        FFMAX(decoder->output[0]->buffer_num_min, decoder->output[0]->buffer_num_recommended) + ctx->extra_buffers;
    ctx->pool_out->pool = mmal_pool_create(decoder->output[0]->buffer_num,
                                           decoder->output[0]->buffer_size);
    if (!ctx->pool_out->pool) {
        ret = AVERROR(ENOMEM);
        goto fail;
    }

    return 0;

fail:
    return ret < 0 ? ret : AVERROR_UNKNOWN;
}