Esempio n. 1
0
static int libschroedinger_encode_init(AVCodecContext *avccontext)
{
    FfmpegSchroEncoderParams* p_schro_params = avccontext->priv_data;
    SchroVideoFormatEnum preset;

    /* Initialize the libraries that libschroedinger depends on. */
    schro_init();

    /* Create an encoder object. */
    p_schro_params->encoder = schro_encoder_new();

    if (!p_schro_params->encoder) {
        av_log(avccontext, AV_LOG_ERROR,
               "Unrecoverable Error: schro_encoder_new failed. ");
        return -1;
    }

    /* Initialize the format. */
    preset = ff_get_schro_video_format_preset(avccontext);
    p_schro_params->format =
                    schro_encoder_get_video_format(p_schro_params->encoder);
    schro_video_format_set_std_video_format(p_schro_params->format, preset);
    p_schro_params->format->width  = avccontext->width;
    p_schro_params->format->height = avccontext->height;

    if (SetSchroChromaFormat(avccontext) == -1)
        return -1;

    if (avccontext->color_primaries == AVCOL_PRI_BT709) {
        p_schro_params->format->colour_primaries = SCHRO_COLOUR_PRIMARY_HDTV;
    } else if (avccontext->color_primaries == AVCOL_PRI_BT470BG) {
        p_schro_params->format->colour_primaries = SCHRO_COLOUR_PRIMARY_SDTV_625;
    } else if (avccontext->color_primaries == AVCOL_PRI_SMPTE170M) {
        p_schro_params->format->colour_primaries = SCHRO_COLOUR_PRIMARY_SDTV_525;
    }

    if (avccontext->colorspace == AVCOL_SPC_BT709) {
        p_schro_params->format->colour_matrix = SCHRO_COLOUR_MATRIX_HDTV;
    } else if (avccontext->colorspace == AVCOL_SPC_BT470BG) {
        p_schro_params->format->colour_matrix = SCHRO_COLOUR_MATRIX_SDTV;
    }

    if (avccontext->color_trc == AVCOL_TRC_BT709) {
        p_schro_params->format->transfer_function = SCHRO_TRANSFER_CHAR_TV_GAMMA;
    }

    if (ff_get_schro_frame_format(p_schro_params->format->chroma_format,
                                  &p_schro_params->frame_format) == -1) {
        av_log(avccontext, AV_LOG_ERROR,
               "This codec currently supports only planar YUV 4:2:0, 4:2:2"
               " and 4:4:4 formats.\n");
        return -1;
    }

    p_schro_params->format->frame_rate_numerator   = avccontext->time_base.den;
    p_schro_params->format->frame_rate_denominator = avccontext->time_base.num;

    p_schro_params->frame_size = avpicture_get_size(avccontext->pix_fmt,
                                                    avccontext->width,
                                                    avccontext->height);

    avccontext->coded_frame = &p_schro_params->picture;

    if (!avccontext->gop_size) {
        schro_encoder_setting_set_double(p_schro_params->encoder,
                                         "gop_structure",
                                         SCHRO_ENCODER_GOP_INTRA_ONLY);

        if (avccontext->coder_type == FF_CODER_TYPE_VLC)
            schro_encoder_setting_set_double(p_schro_params->encoder,
                                             "enable_noarith", 1);
    } else {
        schro_encoder_setting_set_double(p_schro_params->encoder,
                                         "au_distance", avccontext->gop_size);
        avccontext->has_b_frames = 1;
    }

    /* FIXME - Need to handle SCHRO_ENCODER_RATE_CONTROL_LOW_DELAY. */
    if (avccontext->flags & CODEC_FLAG_QSCALE) {
        if (!avccontext->global_quality) {
            /* lossless coding */
            schro_encoder_setting_set_double(p_schro_params->encoder,
                                             "rate_control",
                                             SCHRO_ENCODER_RATE_CONTROL_LOSSLESS);
        } else {
            int quality;
            schro_encoder_setting_set_double(p_schro_params->encoder,
                                             "rate_control",
                                             SCHRO_ENCODER_RATE_CONTROL_CONSTANT_QUALITY);

            quality = avccontext->global_quality / FF_QP2LAMBDA;
            if (quality > 10)
                quality = 10;
            schro_encoder_setting_set_double(p_schro_params->encoder,
                                             "quality", quality);
        }
    } else {
        schro_encoder_setting_set_double(p_schro_params->encoder,
                                         "rate_control",
                                         SCHRO_ENCODER_RATE_CONTROL_CONSTANT_BITRATE);

        schro_encoder_setting_set_double(p_schro_params->encoder,
                                         "bitrate",
                                         avccontext->bit_rate);

    }

    if (avccontext->flags & CODEC_FLAG_INTERLACED_ME)
        /* All material can be coded as interlaced or progressive
           irrespective of the type of source material. */
        schro_encoder_setting_set_double(p_schro_params->encoder,
                                         "interlaced_coding", 1);

    schro_encoder_setting_set_double(p_schro_params->encoder, "open_gop",
                                     !(avccontext->flags & CODEC_FLAG_CLOSED_GOP));

    /* FIXME: Signal range hardcoded to 8-bit data until both libschroedinger
     * and libdirac support other bit-depth data. */
    schro_video_format_set_std_signal_range(p_schro_params->format,
                                            SCHRO_SIGNAL_RANGE_8BIT_VIDEO);

    /* Set the encoder format. */
    schro_encoder_set_video_format(p_schro_params->encoder,
                                   p_schro_params->format);

    /* Set the debug level. */
    schro_debug_set_level(avccontext->debug);

    schro_encoder_start(p_schro_params->encoder);

    /* Initialize the encoded frame queue. */
    ff_dirac_schro_queue_init(&p_schro_params->enc_frame_queue);
    return 0;
}
Esempio n. 2
0
static int libschroedinger_encode_init(AVCodecContext *avccontext)
{
    FfmpegSchroEncoderParams* p_schro_params = avccontext->priv_data;
    SchroVideoFormatEnum preset;

    /* Initialize the libraries that libschroedinger depends on. */
    schro_init();

    /* Create an encoder object. */
    p_schro_params->encoder = schro_encoder_new();

    if (!p_schro_params->encoder) {
        av_log(avccontext, AV_LOG_ERROR,
               "Unrecoverable Error: schro_encoder_new failed. ");
        return -1;
    }

    /* Initialize the format. */
    preset = ff_get_schro_video_format_preset(avccontext);
    p_schro_params->format =
                    schro_encoder_get_video_format(p_schro_params->encoder);
    schro_video_format_set_std_video_format(p_schro_params->format, preset);
    p_schro_params->format->width  = avccontext->width;
    p_schro_params->format->height = avccontext->height;

    if (SetSchroChromaFormat(avccontext) == -1)
        return -1;

    if (ff_get_schro_frame_format(p_schro_params->format->chroma_format,
                                  &p_schro_params->frame_format) == -1) {
        av_log(avccontext, AV_LOG_ERROR,
               "This codec currently supports only planar YUV 4:2:0, 4:2:2"
               " and 4:4:4 formats.\n");
        return -1;
    }

    p_schro_params->format->frame_rate_numerator   = avccontext->time_base.den;
    p_schro_params->format->frame_rate_denominator = avccontext->time_base.num;

    p_schro_params->frame_size = avpicture_get_size(avccontext->pix_fmt,
                                                    avccontext->width,
                                                    avccontext->height);

    avccontext->coded_frame = &p_schro_params->picture;

    if (!avccontext->gop_size) {
        schro_encoder_setting_set_double(p_schro_params->encoder,
                                         "gop_structure",
                                         SCHRO_ENCODER_GOP_INTRA_ONLY);

        if (avccontext->coder_type == FF_CODER_TYPE_VLC)
            schro_encoder_setting_set_double(p_schro_params->encoder,
                                             "enable_noarith", 1);
    } else {
        schro_encoder_setting_set_double(p_schro_params->encoder,
                                         "gop_structure",
                                         SCHRO_ENCODER_GOP_BIREF);
        avccontext->has_b_frames = 1;
    }

    /* FIXME - Need to handle SCHRO_ENCODER_RATE_CONTROL_LOW_DELAY. */
    if (avccontext->flags & CODEC_FLAG_QSCALE) {
        if (!avccontext->global_quality) {
            /* lossless coding */
            schro_encoder_setting_set_double(p_schro_params->encoder,
                                             "rate_control",
                                             SCHRO_ENCODER_RATE_CONTROL_LOSSLESS);
        } else {
            int noise_threshold;
            schro_encoder_setting_set_double(p_schro_params->encoder,
                                             "rate_control",
                                             SCHRO_ENCODER_RATE_CONTROL_CONSTANT_NOISE_THRESHOLD);

            noise_threshold = avccontext->global_quality / FF_QP2LAMBDA;
            if (noise_threshold > 100)
                noise_threshold = 100;
            schro_encoder_setting_set_double(p_schro_params->encoder,
                                             "noise_threshold",
                                             noise_threshold);
        }
    } else {
        schro_encoder_setting_set_double(p_schro_params->encoder,
                                         "rate_control",
                                         SCHRO_ENCODER_RATE_CONTROL_CONSTANT_BITRATE);

        schro_encoder_setting_set_double(p_schro_params->encoder,
                                         "bitrate",
                                         avccontext->bit_rate);

    }

    if (avccontext->flags & CODEC_FLAG_INTERLACED_ME)
        /* All material can be coded as interlaced or progressive
           irrespective of the type of source material. */
        schro_encoder_setting_set_double(p_schro_params->encoder,
                                         "interlaced_coding", 1);

    /* FIXME: Signal range hardcoded to 8-bit data until both libschroedinger
     * and libdirac support other bit-depth data. */
    schro_video_format_set_std_signal_range(p_schro_params->format,
                                            SCHRO_SIGNAL_RANGE_8BIT_VIDEO);

    /* Set the encoder format. */
    schro_encoder_set_video_format(p_schro_params->encoder,
                                   p_schro_params->format);

    /* Set the debug level. */
    schro_debug_set_level(avccontext->debug);

    schro_encoder_start(p_schro_params->encoder);

    /* Initialize the encoded frame queue. */
    ff_dirac_schro_queue_init(&p_schro_params->enc_frame_queue);
    return 0;
}