C++ DB_decoder_t::read方法代码示例

本文整理汇总了C++中DB_decoder_t::read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::read方法的具体用法？C++ DB_decoder_t::read怎么用？C++ DB_decoder_t::read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::read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


//.........这里部分代码省略.........
            }

            if (!temp_file) {
                temp_file = enc_pipe;
            }

            // write wave header
            char wavehdr_int[] = {
                0x52, 0x49, 0x46, 0x46, 0x24, 0x70, 0x0d, 0x00, 0x57, 0x41, 0x56, 0x45, 0x66, 0x6d, 0x74, 0x20, 0x10, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02, 0x00, 0x44, 0xac, 0x00, 0x00, 0x10, 0xb1, 0x02, 0x00, 0x04, 0x00, 0x10, 0x00, 0x64, 0x61, 0x74, 0x61
            };
            char wavehdr_float[] = {
                0x52, 0x49, 0x46, 0x46, 0x2a, 0xdf, 0x02, 0x00, 0x57, 0x41, 0x56, 0x45, 0x66, 0x6d, 0x74, 0x20, 0x28, 0x00, 0x00, 0x00, 0xfe, 0xff, 0x02, 0x00, 0x40, 0x1f, 0x00, 0x00, 0x00, 0xfa, 0x00, 0x00, 0x08, 0x00, 0x20, 0x00, 0x16, 0x00, 0x20, 0x00, 0x03, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71, 0x66, 0x61, 0x63, 0x74, 0x04, 0x00, 0x00, 0x00, 0xc5, 0x5b, 0x00, 0x00, 0x64, 0x61, 0x74, 0x61
            };
            char *wavehdr = output_is_float ? wavehdr_float : wavehdr_int;
            int wavehdr_size = output_is_float ? sizeof (wavehdr_float) : sizeof (wavehdr_int);
            int header_written = 0;
            uint32_t outsize = 0;
            uint32_t outsr = fileinfo->fmt.samplerate;
            uint16_t outch = fileinfo->fmt.channels;

            int samplesize = fileinfo->fmt.channels * fileinfo->fmt.bps / 8;
            int bs = 10250 * samplesize;
            char buffer[bs * 4];
            int dspsize = bs / samplesize * sizeof (float) * fileinfo->fmt.channels;
            char dspbuffer[dspsize * 4];
            int eof = 0;
            for (;;) {
                if (eof) {
                    break;
                }
                if (abort && *abort) {
                    break;
                }
                int sz = dec->read (fileinfo, buffer, bs);

                if (sz != bs) {
                    eof = 1;
                }
                if (dsp_preset) {
                    ddb_waveformat_t fmt;
                    ddb_waveformat_t outfmt;
                    memcpy (&fmt, &fileinfo->fmt, sizeof (fmt));
                    memcpy (&outfmt, &fileinfo->fmt, sizeof (fmt));
                    fmt.bps = 32;
                    fmt.is_float = 1;
                    deadbeef->pcm_convert (&fileinfo->fmt, buffer, &fmt, dspbuffer, sz);

                    ddb_dsp_context_t *dsp = dsp_preset->chain;
                    int frames = sz / samplesize;
                    while (dsp) {
                        frames = dsp->plugin->process (dsp, (float *)dspbuffer, frames, sizeof (dspbuffer) / (fmt.channels * 4), &fmt, NULL);
                        dsp = dsp->next;
                    }

                    outsr = fmt.samplerate;
                    outch = fmt.channels;

                    outfmt.bps = output_bps;
                    outfmt.is_float = output_is_float;
                    outfmt.channels = outch;
                    outfmt.samplerate = outsr;

                    int n = deadbeef->pcm_convert (&fmt, dspbuffer, &outfmt, buffer, frames * sizeof (float) * fmt.channels);
                    sz = n;
                }
                else if (fileinfo->fmt.bps != output_bps || fileinfo->fmt.is_float != output_is_float) {

开发者ID:Tydus，项目名称:deadbeef，代码行数:67，代码来源:converter.c

示例2: if


//.........这里部分代码省略.........
            }

            // write wave header
            char wavehdr_int[] = {
                0x52, 0x49, 0x46, 0x46, 0x00, 0x00, 0x00, 0x00, 0x57, 0x41, 0x56, 0x45, 0x66, 0x6d, 0x74, 0x20, 0x10, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02, 0x00, 0x44, 0xac, 0x00, 0x00, 0x10, 0xb1, 0x02, 0x00, 0x04, 0x00, 0x10, 0x00, 0x64, 0x61, 0x74, 0x61
            };
            char wavehdr_float[] = {
                0x52, 0x49, 0x46, 0x46, 0x00, 0x00, 0x00, 0x00, 0x57, 0x41, 0x56, 0x45, 0x66, 0x6d, 0x74, 0x20, 0x28, 0x00, 0x00, 0x00, 0xfe, 0xff, 0x02, 0x00, 0x40, 0x1f, 0x00, 0x00, 0x00, 0xfa, 0x00, 0x00, 0x08, 0x00, 0x20, 0x00, 0x16, 0x00, 0x20, 0x00, 0x03, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71, 0x66, 0x61, 0x63, 0x74, 0x04, 0x00, 0x00, 0x00, 0xc5, 0x5b, 0x00, 0x00, 0x64, 0x61, 0x74, 0x61
            };
            char *wavehdr = output_is_float ? wavehdr_float : wavehdr_int;
            int wavehdr_size = output_is_float ? sizeof (wavehdr_float) : sizeof (wavehdr_int);
            int header_written = 0;
            uint32_t outsize = 0;
            uint32_t outsr = fileinfo->fmt.samplerate;
            uint16_t outch = fileinfo->fmt.channels;

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

            // block size
            int bs = 2000 * samplesize;
            // expected buffer size after worst-case dsp
            int dspsize = bs/samplesize*sizeof(float)*8*48;
            buffer = malloc (dspsize);
            // account for up to float32 7.1 resampled to 48x ratio
            dspbuffer = malloc (dspsize);
            int eof = 0;
            for (;;) {
                if (eof) {
                    break;
                }
                if (abort && *abort) {
                    break;
                }
                int sz = dec->read (fileinfo, buffer, bs);

                if (sz != bs) {
                    eof = 1;
                }
                if (dsp_preset) {
                    ddb_waveformat_t fmt;
                    ddb_waveformat_t outfmt;
                    memcpy (&fmt, &fileinfo->fmt, sizeof (fmt));
                    memcpy (&outfmt, &fileinfo->fmt, sizeof (fmt));
                    fmt.bps = 32;
                    fmt.is_float = 1;
                    deadbeef->pcm_convert (&fileinfo->fmt, buffer, &fmt, dspbuffer, sz);

                    ddb_dsp_context_t *dsp = dsp_preset->chain;
                    int frames = sz / samplesize;
                    while (dsp) {
                        frames = dsp->plugin->process (dsp, (float *)dspbuffer, frames, dspsize / (fmt.channels * 4), &fmt, NULL);
                        if (frames <= 0) {
                            break;
                        }
                        dsp = dsp->next;
                    }
                    if (frames <= 0) {
                        fprintf (stderr, "converter: dsp error, please check you dsp preset\n");
                        goto error;
                    }

                    outsr = fmt.samplerate;
                    outch = fmt.channels;

                    outfmt.bps = output_bps;
                    outfmt.is_float = output_is_float;

开发者ID:Gardenya，项目名称:deadbeef，代码行数:67，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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