C++ DB_decoder_t::open方法代码示例

本文整理汇总了C++中DB_decoder_t::open方法的典型用法代码示例。如果您正苦于以下问题：C++ DB_decoder_t::open方法的具体用法？C++ DB_decoder_t::open怎么用？C++ DB_decoder_t::open使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DB_decoder_t的用法示例。

在下文中一共展示了DB_decoder_t::open方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: if

int
convert (DB_playItem_t *it, const char *outfolder, const char *outfile, int output_bps, int output_is_float, int preserve_folder_structure, const char *root_folder, ddb_encoder_preset_t *encoder_preset, ddb_dsp_preset_t *dsp_preset, int *abort) {
    if (deadbeef->pl_get_item_duration (it) <= 0) {
        deadbeef->pl_lock ();
        const char *fname = deadbeef->pl_find_meta (it, ":URI");
        fprintf (stderr, "converter: stream %s doesn't have finite length, skipped\n", fname);
        deadbeef->pl_unlock ();
        return -1;
    }

    char *path = outfolder[0] ? strdupa (outfolder) : strdupa (getenv("HOME"));
    if (!check_dir (path, 0755)) {
        fprintf (stderr, "converter: failed to create output folder: %s\n", outfolder);
        return -1;
    }

    int err = -1;
    FILE *enc_pipe = NULL;
    FILE *temp_file = NULL;
    DB_decoder_t *dec = NULL;
    DB_fileinfo_t *fileinfo = NULL;
    char out[PATH_MAX] = ""; // full path to output file
    char input_file_name[PATH_MAX] = "";
    dec = (DB_decoder_t *)deadbeef->plug_get_for_id (deadbeef->pl_find_meta (it, ":DECODER"));

    if (dec) {
        fileinfo = dec->open (0);
        if (fileinfo && dec->init (fileinfo, DB_PLAYITEM (it)) != 0) {
            deadbeef->pl_lock ();
            fprintf (stderr, "converter: failed to decode file %s\n", deadbeef->pl_find_meta (it, ":URI"));
            deadbeef->pl_unlock ();
            goto error;
        }
        if (fileinfo) {
            if (output_bps == -1) {
                output_bps = fileinfo->fmt.bps;
                output_is_float = fileinfo->fmt.is_float;
            }

            get_output_path (it, outfolder, outfile, encoder_preset, out, sizeof (out));
            if (encoder_preset->method == DDB_ENCODER_METHOD_FILE) {
                const char *tmp = getenv ("TMPDIR");
                if (!tmp) {
                    tmp = "/tmp";
                }
                snprintf (input_file_name, sizeof (input_file_name), "%s/ddbconvXXXXXX", tmp);
                mktemp (input_file_name);
                strcat (input_file_name, ".wav");
            }
            else {
                strcpy (input_file_name, "-");
            }

            char enc[2000];
            memset (enc, 0, sizeof (enc));

            // formatting: %o = outfile, %i = infile
            char *e = encoder_preset->encoder;
            char *o = enc;
            *o = 0;
            int len = sizeof (enc);
            while (e && *e) {
                if (len <= 0) {
                    fprintf (stderr, "converter: failed to assemble encoder command line - buffer is not big enough, try to shorten your parameters. max allowed length is %u characters\n", (unsigned)sizeof (enc));
                    goto error;
                }
                if (e[0] == '%' && e[1]) {
                    if (e[1] == 'o') {
                        int l = snprintf (o, len, "\"%s\"", out);
                        o += l;
                        len -= l;
                    }
                    else if (e[1] == 'i') {
                        int l = snprintf (o, len, "\"%s\"", input_file_name);
                        o += l;
                        len -= l;
                    }
                    else {
                        strncpy (o, e, 2);
                        o += 2;
                        len -= 2;
                    }
                    e += 2;
                }
                else {
                    *o++ = *e++;
                    *o = 0;
                    len--;
                }
            }

            fprintf (stderr, "converter: will encode using: %s\n", enc[0] ? enc : "internal RIFF WAVE writer");

            if (!encoder_preset->encoder[0]) {
                // write to wave file
                temp_file = fopen (out, "w+b");
                if (!temp_file) {
                    fprintf (stderr, "converter: failed to open output wave file %s\n", out);
                    goto error;
                }
//.........这里部分代码省略.........

开发者ID:Tydus，项目名称:deadbeef，代码行数:101，代码来源:converter.c

示例2: if

int
convert (DB_playItem_t *it, const char *out, int output_bps, int output_is_float, ddb_encoder_preset_t *encoder_preset, ddb_dsp_preset_t *dsp_preset, int *abort) {
    char *buffer = NULL;
    char *dspbuffer = NULL;
    if (deadbeef->pl_get_item_duration (it) <= 0) {
        deadbeef->pl_lock ();
        fprintf (stderr, "converter: stream %s doesn't have finite length, skipped\n", deadbeef->pl_find_meta (it, ":URI"));
        deadbeef->pl_unlock ();
        return -1;
    }

    int err = -1;
    FILE *enc_pipe = NULL;
    int temp_file = -1;
    DB_decoder_t *dec = NULL;
    DB_fileinfo_t *fileinfo = NULL;
    char input_file_name[PATH_MAX] = "";
    deadbeef->pl_lock ();
    dec = (DB_decoder_t *)deadbeef->plug_get_for_id (deadbeef->pl_find_meta (it, ":DECODER"));
    deadbeef->pl_unlock ();

    if (dec) {
        fileinfo = dec->open (0);
        if (fileinfo && dec->init (fileinfo, DB_PLAYITEM (it)) != 0) {
            deadbeef->pl_lock ();
            fprintf (stderr, "converter: failed to decode file %s\n", deadbeef->pl_find_meta (it, ":URI"));
            deadbeef->pl_unlock ();
            goto error;
        }
        if (fileinfo) {
            if (output_bps == -1) {
                output_bps = fileinfo->fmt.bps;
                output_is_float = fileinfo->fmt.is_float;
            }

            char *final_path = strdupa (out);
            char *sep = strrchr (final_path, '/');
            if (sep) {
                *sep = 0;
                if (!check_dir (final_path, 0755)) {
                    fprintf (stderr, "converter: failed to create output folder: %s\n", final_path);
                    goto error;
                }
            }

            if (encoder_preset->method == DDB_ENCODER_METHOD_FILE) {
                const char *tmp = getenv ("TMPDIR");
                if (!tmp) {
                    tmp = "/tmp";
                }
                snprintf (input_file_name, sizeof (input_file_name), "%s/ddbconvXXXXXX", tmp);
                char *res = mktemp (input_file_name);
                strcat (input_file_name, ".wav");
            }
            else {
                strcpy (input_file_name, "-");
            }

            char enc[2000];
            memset (enc, 0, sizeof (enc));

            char escaped_out[PATH_MAX];
            escape_filepath (out, escaped_out, sizeof (escaped_out));

            // formatting: %o = outfile, %i = infile
            char *e = encoder_preset->encoder;
            char *o = enc;
            *o = 0;
            int len = sizeof (enc);
            while (e && *e) {
                if (len <= 0) {
                    fprintf (stderr, "converter: failed to assemble encoder command line - buffer is not big enough, try to shorten your parameters. max allowed length is %u characters\n", (unsigned)sizeof (enc));
                    goto error;
                }
                if (e[0] == '%' && e[1]) {
                    if (e[1] == 'o') {
                        int l = snprintf (o, len, "\"%s\"", escaped_out);
                        o += l;
                        len -= l;
                    }
                    else if (e[1] == 'i') {
                        int l = snprintf (o, len, "\"%s\"", input_file_name);
                        o += l;
                        len -= l;
                    }
                    else {
                        strncpy (o, e, 2);
                        o += 2;
                        len -= 2;
                    }
                    e += 2;
                }
                else {
                    *o++ = *e++;
                    *o = 0;
                    len--;
                }
            }

            fprintf (stderr, "converter: will encode using: %s\n", enc[0] ? enc : "internal RIFF WAVE writer");
//.........这里部分代码省略.........

开发者ID:Gardenya，项目名称:deadbeef，代码行数:101，代码来源:converter.c

示例3: malloc

void
rg_calc_thread(void *ctx) {
    DB_decoder_t *dec = NULL;
    DB_fileinfo_t *fileinfo = NULL;

    char *buffer = NULL;
    char *bufferf = NULL;

    track_state_t *st = (track_state_t *)ctx;
    if (st->settings->pabort && *(st->settings->pabort)) {
        return;
    }
    if (deadbeef->pl_get_item_duration (st->settings->tracks[st->track_index]) <= 0) {
        st->settings->results[st->track_index].scan_result = DDB_RG_SCAN_RESULT_INVALID_FILE;
        return;
    }


    deadbeef->pl_lock ();
    dec = (DB_decoder_t *)deadbeef->plug_get_for_id (deadbeef->pl_find_meta (st->settings->tracks[st->track_index], ":DECODER"));
    deadbeef->pl_unlock ();

    if (dec) {
        fileinfo = dec->open (DDB_DECODER_HINT_RAW_SIGNAL);

        if (fileinfo && dec->init (fileinfo, DB_PLAYITEM (st->settings->tracks[st->track_index])) != 0) {
            st->settings->results[st->track_index].scan_result = DDB_RG_SCAN_RESULT_FILE_NOT_FOUND;
            goto error;
        }

        if (fileinfo) {
            st->gain_state[st->track_index] = ebur128_init(fileinfo->fmt.channels, fileinfo->fmt.samplerate, EBUR128_MODE_I);
            st->peak_state[st->track_index] = ebur128_init(fileinfo->fmt.channels, fileinfo->fmt.samplerate, EBUR128_MODE_SAMPLE_PEAK);

            // speaker mask mapping from WAV to EBUR128
            static const int chmap[18] = {
                EBUR128_LEFT,
                EBUR128_RIGHT,
                EBUR128_CENTER,
                EBUR128_UNUSED,
                EBUR128_LEFT_SURROUND,
                EBUR128_RIGHT_SURROUND,
                EBUR128_LEFT_SURROUND,
                EBUR128_RIGHT_SURROUND,
                EBUR128_CENTER,
                EBUR128_LEFT_SURROUND,
                EBUR128_RIGHT_SURROUND,
                EBUR128_CENTER,
                EBUR128_LEFT_SURROUND,
                EBUR128_CENTER,
                EBUR128_RIGHT_SURROUND,
                EBUR128_LEFT_SURROUND,
                EBUR128_CENTER,
                EBUR128_RIGHT_SURROUND,
            };

            uint32_t channelmask = fileinfo->fmt.channelmask;

            // first 18 speaker positions are known, the rest will be marked as UNUSED
            int ch = 0;
            for (int i = 0; i < 32 && ch < fileinfo->fmt.channels; i++) {
                if (i < 18) {
                    if (channelmask & (1<<i))
                    {
                        ebur128_set_channel (st->gain_state[st->track_index], ch, chmap[i]);
                        ebur128_set_channel (st->peak_state[st->track_index], ch, chmap[i]);
                        ch++;
                    }
                }
                else {
                    ebur128_set_channel (st->gain_state[st->track_index], ch, EBUR128_UNUSED);
                    ebur128_set_channel (st->peak_state[st->track_index], ch, EBUR128_UNUSED);
                    ch++;
                }
            }

            int samplesize = fileinfo->fmt.channels * fileinfo->fmt.bps / 8;

            int bs = 2000 * samplesize;
            ddb_waveformat_t fmt;

            buffer = malloc (bs);

            if (!fileinfo->fmt.is_float) {
                bufferf = malloc (2000 * sizeof (float) * fileinfo->fmt.channels);
                memcpy (&fmt, &fileinfo->fmt, sizeof (fmt));
                fmt.bps = 32;
                fmt.is_float = 1;
            }
            else {
                bufferf = buffer;
            }

            int eof = 0;
            for (;;) {
                if (eof) {
                    break;
                }
                if (st->settings->pabort && *(st->settings->pabort)) {
                    break;
//.........这里部分代码省略.........

开发者ID:cboxdoerfer，项目名称:deadbeef，代码行数:101，代码来源:rg_scanner.c

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