diff options
Diffstat (limited to '3rdparty/minimp3')
-rw-r--r-- | 3rdparty/minimp3/minimp3.h | 24 | ||||
-rw-r--r-- | 3rdparty/minimp3/minimp3_ex.h | 1394 |
2 files changed, 17 insertions, 1401 deletions
diff --git a/3rdparty/minimp3/minimp3.h b/3rdparty/minimp3/minimp3.h index 796cbc1f8ed..3220ae1a85b 100644 --- a/3rdparty/minimp3/minimp3.h +++ b/3rdparty/minimp3/minimp3.h @@ -881,12 +881,22 @@ static void L3_midside_stereo(float *left, int n) int i = 0; float *right = left + 576; #if HAVE_SIMD - if (have_simd()) for (; i < n - 3; i += 4) + if (have_simd()) { - f4 vl = VLD(left + i); - f4 vr = VLD(right + i); - VSTORE(left + i, VADD(vl, vr)); - VSTORE(right + i, VSUB(vl, vr)); + for (; i < n - 3; i += 4) + { + f4 vl = VLD(left + i); + f4 vr = VLD(right + i); + VSTORE(left + i, VADD(vl, vr)); + VSTORE(right + i, VSUB(vl, vr)); + } +#ifdef __GNUC__ + /* Workaround for spurious -Waggressive-loop-optimizations warning from gcc. + * For more info see: https://github.com/lieff/minimp3/issues/88 + */ + if (__builtin_constant_p(n % 4 == 0) && n % 4 == 0) + return; +#endif } #endif /* HAVE_SIMD */ for (; i < n; i++) @@ -1353,7 +1363,7 @@ static void mp3d_DCT_II(float *grbuf, int n) } else #endif /* HAVE_SIMD */ #ifdef MINIMP3_ONLY_SIMD - {} + {} /* for HAVE_SIMD=1, MINIMP3_ONLY_SIMD=1 case we do not need non-intrinsic "else" branch */ #else /* MINIMP3_ONLY_SIMD */ for (; k < n; k++) { @@ -1583,7 +1593,7 @@ static void mp3d_synth(float *xl, mp3d_sample_t *dstl, int nch, float *lins) } else #endif /* HAVE_SIMD */ #ifdef MINIMP3_ONLY_SIMD - {} + {} /* for HAVE_SIMD=1, MINIMP3_ONLY_SIMD=1 case we do not need non-intrinsic "else" branch */ #else /* MINIMP3_ONLY_SIMD */ for (i = 14; i >= 0; i--) { diff --git a/3rdparty/minimp3/minimp3_ex.h b/3rdparty/minimp3/minimp3_ex.h deleted file mode 100644 index e29dd15b2ec..00000000000 --- a/3rdparty/minimp3/minimp3_ex.h +++ /dev/null @@ -1,1394 +0,0 @@ -#ifndef MINIMP3_EXT_H -#define MINIMP3_EXT_H -/* - https://github.com/lieff/minimp3 - To the extent possible under law, the author(s) have dedicated all copyright and related and neighboring rights to this software to the public domain worldwide. - This software is distributed without any warranty. - See <http://creativecommons.org/publicdomain/zero/1.0/>. -*/ -#include "minimp3.h" - -/* flags for mp3dec_ex_open_* functions */ -#define MP3D_SEEK_TO_BYTE 0 /* mp3dec_ex_seek seeks to byte in stream */ -#define MP3D_SEEK_TO_SAMPLE 1 /* mp3dec_ex_seek precisely seeks to sample using index (created during duration calculation scan or when mp3dec_ex_seek called) */ -#define MP3D_DO_NOT_SCAN 2 /* do not scan whole stream for duration if vbrtag not found, mp3dec_ex_t::samples will be filled only if mp3dec_ex_t::vbr_tag_found == 1 */ -#ifdef MINIMP3_ALLOW_MONO_STEREO_TRANSITION -#define MP3D_ALLOW_MONO_STEREO_TRANSITION 4 -#define MP3D_FLAGS_MASK 7 -#else -#define MP3D_FLAGS_MASK 3 -#endif - -/* compile-time config */ -#define MINIMP3_PREDECODE_FRAMES 2 /* frames to pre-decode and skip after seek (to fill internal structures) */ -/*#define MINIMP3_SEEK_IDX_LINEAR_SEARCH*/ /* define to use linear index search instead of binary search on seek */ -#define MINIMP3_IO_SIZE (128*1024) /* io buffer size for streaming functions, must be greater than MINIMP3_BUF_SIZE */ -#define MINIMP3_BUF_SIZE (16*1024) /* buffer which can hold minimum 10 consecutive mp3 frames (~16KB) worst case */ -/*#define MINIMP3_SCAN_LIMIT (256*1024)*/ /* how many bytes will be scanned to search first valid mp3 frame, to prevent stall on large non-mp3 files */ -#define MINIMP3_ENABLE_RING 0 /* WIP enable hardware magic ring buffer if available, to make less input buffer memmove(s) in callback IO mode */ - -/* return error codes */ -#define MP3D_E_PARAM -1 -#define MP3D_E_MEMORY -2 -#define MP3D_E_IOERROR -3 -#define MP3D_E_USER -4 /* can be used to stop processing from callbacks without indicating specific error */ -#define MP3D_E_DECODE -5 /* decode error which can't be safely skipped, such as sample rate, layer and channels change */ - -typedef struct -{ - mp3d_sample_t *buffer; - size_t samples; /* channels included, byte size = samples*sizeof(mp3d_sample_t) */ - int channels, hz, layer, avg_bitrate_kbps; -} mp3dec_file_info_t; - -typedef struct -{ - const uint8_t *buffer; - size_t size; -} mp3dec_map_info_t; - -typedef struct -{ - uint64_t sample; - uint64_t offset; -} mp3dec_frame_t; - -typedef struct -{ - mp3dec_frame_t *frames; - size_t num_frames, capacity; -} mp3dec_index_t; - -typedef size_t (*MP3D_READ_CB)(void *buf, size_t size, void *user_data); -typedef int (*MP3D_SEEK_CB)(uint64_t position, void *user_data); - -typedef struct -{ - MP3D_READ_CB read; - void *read_data; - MP3D_SEEK_CB seek; - void *seek_data; -} mp3dec_io_t; - -typedef struct -{ - mp3dec_t mp3d; - mp3dec_map_info_t file; - mp3dec_io_t *io; - mp3dec_index_t index; - uint64_t offset, samples, detected_samples, cur_sample, start_offset, end_offset; - mp3dec_frame_info_t info; - mp3d_sample_t buffer[MINIMP3_MAX_SAMPLES_PER_FRAME]; - size_t input_consumed, input_filled; - int is_file, flags, vbr_tag_found, indexes_built; - int free_format_bytes; - int buffer_samples, buffer_consumed, to_skip, start_delay; - int last_error; -} mp3dec_ex_t; - -typedef int (*MP3D_ITERATE_CB)(void *user_data, const uint8_t *frame, int frame_size, int free_format_bytes, size_t buf_size, uint64_t offset, mp3dec_frame_info_t *info); -typedef int (*MP3D_PROGRESS_CB)(void *user_data, size_t file_size, uint64_t offset, mp3dec_frame_info_t *info); - -#ifdef __cplusplus -extern "C" { -#endif - -/* detect mp3/mpa format */ -int mp3dec_detect_buf(const uint8_t *buf, size_t buf_size); -int mp3dec_detect_cb(mp3dec_io_t *io, uint8_t *buf, size_t buf_size); -/* decode whole buffer block */ -int mp3dec_load_buf(mp3dec_t *dec, const uint8_t *buf, size_t buf_size, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data); -int mp3dec_load_cb(mp3dec_t *dec, mp3dec_io_t *io, uint8_t *buf, size_t buf_size, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data); -/* iterate through frames */ -int mp3dec_iterate_buf(const uint8_t *buf, size_t buf_size, MP3D_ITERATE_CB callback, void *user_data); -int mp3dec_iterate_cb(mp3dec_io_t *io, uint8_t *buf, size_t buf_size, MP3D_ITERATE_CB callback, void *user_data); -/* streaming decoder with seeking capability */ -int mp3dec_ex_open_buf(mp3dec_ex_t *dec, const uint8_t *buf, size_t buf_size, int flags); -int mp3dec_ex_open_cb(mp3dec_ex_t *dec, mp3dec_io_t *io, int flags); -void mp3dec_ex_close(mp3dec_ex_t *dec); -int mp3dec_ex_seek(mp3dec_ex_t *dec, uint64_t position); -size_t mp3dec_ex_read_frame(mp3dec_ex_t *dec, mp3d_sample_t **buf, mp3dec_frame_info_t *frame_info, size_t max_samples); -size_t mp3dec_ex_read(mp3dec_ex_t *dec, mp3d_sample_t *buf, size_t samples); -#ifndef MINIMP3_NO_STDIO -/* stdio versions of file detect, load, iterate and stream */ -int mp3dec_detect(const char *file_name); -int mp3dec_load(mp3dec_t *dec, const char *file_name, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data); -int mp3dec_iterate(const char *file_name, MP3D_ITERATE_CB callback, void *user_data); -int mp3dec_ex_open(mp3dec_ex_t *dec, const char *file_name, int flags); -#ifdef _WIN32 -int mp3dec_detect_w(const wchar_t *file_name); -int mp3dec_load_w(mp3dec_t *dec, const wchar_t *file_name, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data); -int mp3dec_iterate_w(const wchar_t *file_name, MP3D_ITERATE_CB callback, void *user_data); -int mp3dec_ex_open_w(mp3dec_ex_t *dec, const wchar_t *file_name, int flags); -#endif -#endif - -#ifdef __cplusplus -} -#endif -#endif /*MINIMP3_EXT_H*/ - -#ifdef MINIMP3_IMPLEMENTATION -#include <limits.h> - -static void mp3dec_skip_id3v1(const uint8_t *buf, size_t *pbuf_size) -{ - size_t buf_size = *pbuf_size; -#ifndef MINIMP3_NOSKIP_ID3V1 - if (buf_size >= 128 && !memcmp(buf + buf_size - 128, "TAG", 3)) - { - buf_size -= 128; - if (buf_size >= 227 && !memcmp(buf + buf_size - 227, "TAG+", 4)) - buf_size -= 227; - } -#endif -#ifndef MINIMP3_NOSKIP_APEV2 - if (buf_size > 32 && !memcmp(buf + buf_size - 32, "APETAGEX", 8)) - { - buf_size -= 32; - const uint8_t *tag = buf + buf_size + 8 + 4; - uint32_t tag_size = (uint32_t)(tag[3] << 24) | (tag[2] << 16) | (tag[1] << 8) | tag[0]; - if (buf_size >= tag_size) - buf_size -= tag_size; - } -#endif - *pbuf_size = buf_size; -} - -static size_t mp3dec_skip_id3v2(const uint8_t *buf, size_t buf_size) -{ -#define MINIMP3_ID3_DETECT_SIZE 10 -#ifndef MINIMP3_NOSKIP_ID3V2 - if (buf_size >= MINIMP3_ID3_DETECT_SIZE && !memcmp(buf, "ID3", 3) && !((buf[5] & 15) || (buf[6] & 0x80) || (buf[7] & 0x80) || (buf[8] & 0x80) || (buf[9] & 0x80))) - { - size_t id3v2size = (((buf[6] & 0x7f) << 21) | ((buf[7] & 0x7f) << 14) | ((buf[8] & 0x7f) << 7) | (buf[9] & 0x7f)) + 10; - if ((buf[5] & 16)) - id3v2size += 10; /* footer */ - return id3v2size; - } -#endif - return 0; -} - -static void mp3dec_skip_id3(const uint8_t **pbuf, size_t *pbuf_size) -{ - uint8_t *buf = (uint8_t *)(*pbuf); - size_t buf_size = *pbuf_size; - size_t id3v2size = mp3dec_skip_id3v2(buf, buf_size); - if (id3v2size) - { - if (id3v2size >= buf_size) - id3v2size = buf_size; - buf += id3v2size; - buf_size -= id3v2size; - } - mp3dec_skip_id3v1(buf, &buf_size); - *pbuf = (const uint8_t *)buf; - *pbuf_size = buf_size; -} - -static int mp3dec_check_vbrtag(const uint8_t *frame, int frame_size, uint32_t *frames, int *delay, int *padding) -{ - static const char g_xing_tag[4] = { 'X', 'i', 'n', 'g' }; - static const char g_info_tag[4] = { 'I', 'n', 'f', 'o' }; -#define FRAMES_FLAG 1 -#define BYTES_FLAG 2 -#define TOC_FLAG 4 -#define VBR_SCALE_FLAG 8 - /* Side info offsets after header: - / Mono Stereo - / MPEG1 17 32 - / MPEG2 & 2.5 9 17*/ - bs_t bs[1]; - L3_gr_info_t gr_info[4]; - bs_init(bs, frame + HDR_SIZE, frame_size - HDR_SIZE); - if (HDR_IS_CRC(frame)) - get_bits(bs, 16); - if (L3_read_side_info(bs, gr_info, frame) < 0) - return 0; /* side info corrupted */ - - const uint8_t *tag = frame + HDR_SIZE + bs->pos/8; - if (memcmp(g_xing_tag, tag, 4) && memcmp(g_info_tag, tag, 4)) - return 0; - int flags = tag[7]; - if (!((flags & FRAMES_FLAG))) - return -1; - tag += 8; - *frames = (uint32_t)(tag[0] << 24) | (tag[1] << 16) | (tag[2] << 8) | tag[3]; - tag += 4; - if (flags & BYTES_FLAG) - tag += 4; - if (flags & TOC_FLAG) - tag += 100; - if (flags & VBR_SCALE_FLAG) - tag += 4; - *delay = *padding = 0; - if (*tag) - { /* extension, LAME, Lavc, etc. Should be the same structure. */ - tag += 21; - if (tag - frame + 14 >= frame_size) - return 0; - *delay = ((tag[0] << 4) | (tag[1] >> 4)) + (528 + 1); - *padding = (((tag[1] & 0xF) << 8) | tag[2]) - (528 + 1); - } - return 1; -} - -int mp3dec_detect_buf(const uint8_t *buf, size_t buf_size) -{ - return mp3dec_detect_cb(0, (uint8_t *)buf, buf_size); -} - -int mp3dec_detect_cb(mp3dec_io_t *io, uint8_t *buf, size_t buf_size) -{ - if (!buf || (size_t)-1 == buf_size || (io && buf_size < MINIMP3_BUF_SIZE)) - return MP3D_E_PARAM; - size_t filled = buf_size; - if (io) - { - if (io->seek(0, io->seek_data)) - return MP3D_E_IOERROR; - filled = io->read(buf, MINIMP3_ID3_DETECT_SIZE, io->read_data); - if (filled > MINIMP3_ID3_DETECT_SIZE) - return MP3D_E_IOERROR; - } - if (filled < MINIMP3_ID3_DETECT_SIZE) - return MP3D_E_USER; /* too small, can't be mp3/mpa */ - if (mp3dec_skip_id3v2(buf, filled)) - return 0; /* id3v2 tag is enough evidence */ - if (io) - { - size_t readed = io->read(buf + MINIMP3_ID3_DETECT_SIZE, buf_size - MINIMP3_ID3_DETECT_SIZE, io->read_data); - if (readed > (buf_size - MINIMP3_ID3_DETECT_SIZE)) - return MP3D_E_IOERROR; - filled += readed; - if (filled < MINIMP3_BUF_SIZE) - mp3dec_skip_id3v1(buf, &filled); - } else - { - mp3dec_skip_id3v1(buf, &filled); - if (filled > MINIMP3_BUF_SIZE) - filled = MINIMP3_BUF_SIZE; - } - int free_format_bytes, frame_size; - mp3d_find_frame(buf, filled, &free_format_bytes, &frame_size); - if (frame_size) - return 0; /* MAX_FRAME_SYNC_MATCHES consecutive frames found */ - return MP3D_E_USER; -} - -int mp3dec_load_buf(mp3dec_t *dec, const uint8_t *buf, size_t buf_size, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data) -{ - return mp3dec_load_cb(dec, 0, (uint8_t *)buf, buf_size, info, progress_cb, user_data); -} - -int mp3dec_load_cb(mp3dec_t *dec, mp3dec_io_t *io, uint8_t *buf, size_t buf_size, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data) -{ - if (!dec || !buf || !info || (size_t)-1 == buf_size || (io && buf_size < MINIMP3_BUF_SIZE)) - return MP3D_E_PARAM; - uint64_t detected_samples = 0; - size_t orig_buf_size = buf_size; - int to_skip = 0; - mp3dec_frame_info_t frame_info; - memset(info, 0, sizeof(*info)); - memset(&frame_info, 0, sizeof(frame_info)); - - /* skip id3 */ - size_t filled = 0, consumed = 0; - int eof = 0, ret = 0; - if (io) - { - if (io->seek(0, io->seek_data)) - return MP3D_E_IOERROR; - filled = io->read(buf, MINIMP3_ID3_DETECT_SIZE, io->read_data); - if (filled > MINIMP3_ID3_DETECT_SIZE) - return MP3D_E_IOERROR; - if (MINIMP3_ID3_DETECT_SIZE != filled) - return 0; - size_t id3v2size = mp3dec_skip_id3v2(buf, filled); - if (id3v2size) - { - if (io->seek(id3v2size, io->seek_data)) - return MP3D_E_IOERROR; - filled = io->read(buf, buf_size, io->read_data); - if (filled > buf_size) - return MP3D_E_IOERROR; - } else - { - size_t readed = io->read(buf + MINIMP3_ID3_DETECT_SIZE, buf_size - MINIMP3_ID3_DETECT_SIZE, io->read_data); - if (readed > (buf_size - MINIMP3_ID3_DETECT_SIZE)) - return MP3D_E_IOERROR; - filled += readed; - } - if (filled < MINIMP3_BUF_SIZE) - mp3dec_skip_id3v1(buf, &filled); - } else - { - mp3dec_skip_id3((const uint8_t **)&buf, &buf_size); - if (!buf_size) - return 0; - } - /* try to make allocation size assumption by first frame or vbr tag */ - mp3dec_init(dec); - int samples; - do - { - uint32_t frames; - int i, delay, padding, free_format_bytes = 0, frame_size = 0; - const uint8_t *hdr; - if (io) - { - if (!eof && filled - consumed < MINIMP3_BUF_SIZE) - { /* keep minimum 10 consecutive mp3 frames (~16KB) worst case */ - memmove(buf, buf + consumed, filled - consumed); - filled -= consumed; - consumed = 0; - size_t readed = io->read(buf + filled, buf_size - filled, io->read_data); - if (readed > (buf_size - filled)) - return MP3D_E_IOERROR; - if (readed != (buf_size - filled)) - eof = 1; - filled += readed; - if (eof) - mp3dec_skip_id3v1(buf, &filled); - } - i = mp3d_find_frame(buf + consumed, filled - consumed, &free_format_bytes, &frame_size); - consumed += i; - hdr = buf + consumed; - } else - { - i = mp3d_find_frame(buf, buf_size, &free_format_bytes, &frame_size); - buf += i; - buf_size -= i; - hdr = buf; - } - if (i && !frame_size) - continue; - if (!frame_size) - return 0; - frame_info.channels = HDR_IS_MONO(hdr) ? 1 : 2; - frame_info.hz = hdr_sample_rate_hz(hdr); - frame_info.layer = 4 - HDR_GET_LAYER(hdr); - frame_info.bitrate_kbps = hdr_bitrate_kbps(hdr); - frame_info.frame_bytes = frame_size; - samples = hdr_frame_samples(hdr)*frame_info.channels; - if (3 != frame_info.layer) - break; - int ret = mp3dec_check_vbrtag(hdr, frame_size, &frames, &delay, &padding); - if (ret > 0) - { - padding *= frame_info.channels; - to_skip = delay*frame_info.channels; - detected_samples = samples*(uint64_t)frames; - if (detected_samples >= (uint64_t)to_skip) - detected_samples -= to_skip; - if (padding > 0 && detected_samples >= (uint64_t)padding) - detected_samples -= padding; - if (!detected_samples) - return 0; - } - if (ret) - { - if (io) - { - consumed += frame_size; - } else - { - buf += frame_size; - buf_size -= frame_size; - } - } - break; - } while(1); - size_t allocated = MINIMP3_MAX_SAMPLES_PER_FRAME*sizeof(mp3d_sample_t); - if (detected_samples) - allocated += detected_samples*sizeof(mp3d_sample_t); - else - allocated += (buf_size/frame_info.frame_bytes)*samples*sizeof(mp3d_sample_t); - info->buffer = (mp3d_sample_t*)malloc(allocated); - if (!info->buffer) - return MP3D_E_MEMORY; - /* save info */ - info->channels = frame_info.channels; - info->hz = frame_info.hz; - info->layer = frame_info.layer; - /* decode all frames */ - size_t avg_bitrate_kbps = 0, frames = 0; - do - { - if ((allocated - info->samples*sizeof(mp3d_sample_t)) < MINIMP3_MAX_SAMPLES_PER_FRAME*sizeof(mp3d_sample_t)) - { - allocated *= 2; - mp3d_sample_t *alloc_buf = (mp3d_sample_t*)realloc(info->buffer, allocated); - if (!alloc_buf) - return MP3D_E_MEMORY; - info->buffer = alloc_buf; - } - if (io) - { - if (!eof && filled - consumed < MINIMP3_BUF_SIZE) - { /* keep minimum 10 consecutive mp3 frames (~16KB) worst case */ - memmove(buf, buf + consumed, filled - consumed); - filled -= consumed; - consumed = 0; - size_t readed = io->read(buf + filled, buf_size - filled, io->read_data); - if (readed != (buf_size - filled)) - eof = 1; - filled += readed; - if (eof) - mp3dec_skip_id3v1(buf, &filled); - } - samples = mp3dec_decode_frame(dec, buf + consumed, filled - consumed, info->buffer + info->samples, &frame_info); - consumed += frame_info.frame_bytes; - } else - { - samples = mp3dec_decode_frame(dec, buf, MINIMP3_MIN(buf_size, (size_t)INT_MAX), info->buffer + info->samples, &frame_info); - buf += frame_info.frame_bytes; - buf_size -= frame_info.frame_bytes; - } - if (samples) - { - if (info->hz != frame_info.hz || info->layer != frame_info.layer) - { - ret = MP3D_E_DECODE; - break; - } - if (info->channels && info->channels != frame_info.channels) - { -#ifdef MINIMP3_ALLOW_MONO_STEREO_TRANSITION - info->channels = 0; /* mark file with mono-stereo transition */ -#else - ret = MP3D_E_DECODE; - break; -#endif - } - samples *= frame_info.channels; - if (to_skip) - { - size_t skip = MINIMP3_MIN(samples, to_skip); - to_skip -= skip; - samples -= skip; - memmove(info->buffer, info->buffer + skip, samples*sizeof(mp3d_sample_t)); - } - info->samples += samples; - avg_bitrate_kbps += frame_info.bitrate_kbps; - frames++; - if (progress_cb) - { - ret = progress_cb(user_data, orig_buf_size, orig_buf_size - buf_size, &frame_info); - if (ret) - break; - } - } - } while (frame_info.frame_bytes); - if (detected_samples && info->samples > detected_samples) - info->samples = detected_samples; /* cut padding */ - /* reallocate to normal buffer size */ - if (allocated != info->samples*sizeof(mp3d_sample_t)) - { - mp3d_sample_t *alloc_buf = (mp3d_sample_t*)realloc(info->buffer, info->samples*sizeof(mp3d_sample_t)); - if (!alloc_buf && info->samples) - return MP3D_E_MEMORY; - info->buffer = alloc_buf; - } - if (frames) - info->avg_bitrate_kbps = avg_bitrate_kbps/frames; - return ret; -} - -int mp3dec_iterate_buf(const uint8_t *buf, size_t buf_size, MP3D_ITERATE_CB callback, void *user_data) -{ - const uint8_t *orig_buf = buf; - if (!buf || (size_t)-1 == buf_size || !callback) - return MP3D_E_PARAM; - /* skip id3 */ - mp3dec_skip_id3(&buf, &buf_size); - if (!buf_size) - return 0; - mp3dec_frame_info_t frame_info; - memset(&frame_info, 0, sizeof(frame_info)); - do - { - int free_format_bytes = 0, frame_size = 0, ret; - int i = mp3d_find_frame(buf, buf_size, &free_format_bytes, &frame_size); - buf += i; - buf_size -= i; - if (i && !frame_size) - continue; - if (!frame_size) - break; - const uint8_t *hdr = buf; - frame_info.channels = HDR_IS_MONO(hdr) ? 1 : 2; - frame_info.hz = hdr_sample_rate_hz(hdr); - frame_info.layer = 4 - HDR_GET_LAYER(hdr); - frame_info.bitrate_kbps = hdr_bitrate_kbps(hdr); - frame_info.frame_bytes = frame_size; - - if (callback) - { - if ((ret = callback(user_data, hdr, frame_size, free_format_bytes, buf_size, hdr - orig_buf, &frame_info))) - return ret; - } - buf += frame_size; - buf_size -= frame_size; - } while (1); - return 0; -} - -int mp3dec_iterate_cb(mp3dec_io_t *io, uint8_t *buf, size_t buf_size, MP3D_ITERATE_CB callback, void *user_data) -{ - if (!io || !buf || (size_t)-1 == buf_size || buf_size < MINIMP3_BUF_SIZE || !callback) - return MP3D_E_PARAM; - size_t filled = io->read(buf, MINIMP3_ID3_DETECT_SIZE, io->read_data), consumed = 0; - uint64_t readed = 0; - mp3dec_frame_info_t frame_info; - int eof = 0; - memset(&frame_info, 0, sizeof(frame_info)); - if (filled > MINIMP3_ID3_DETECT_SIZE) - return MP3D_E_IOERROR; - if (MINIMP3_ID3_DETECT_SIZE != filled) - return 0; - size_t id3v2size = mp3dec_skip_id3v2(buf, filled); - if (id3v2size) - { - if (io->seek(id3v2size, io->seek_data)) - return MP3D_E_IOERROR; - filled = io->read(buf, buf_size, io->read_data); - if (filled > buf_size) - return MP3D_E_IOERROR; - readed += id3v2size; - } else - { - size_t readed = io->read(buf + MINIMP3_ID3_DETECT_SIZE, buf_size - MINIMP3_ID3_DETECT_SIZE, io->read_data); - if (readed > (buf_size - MINIMP3_ID3_DETECT_SIZE)) - return MP3D_E_IOERROR; - filled += readed; - } - if (filled < MINIMP3_BUF_SIZE) - mp3dec_skip_id3v1(buf, &filled); - do - { - int free_format_bytes = 0, frame_size = 0, ret; - int i = mp3d_find_frame(buf + consumed, filled - consumed, &free_format_bytes, &frame_size); - if (i && !frame_size) - { - consumed += i; - continue; - } - if (!frame_size) - break; - const uint8_t *hdr = buf + consumed + i; - frame_info.channels = HDR_IS_MONO(hdr) ? 1 : 2; - frame_info.hz = hdr_sample_rate_hz(hdr); - frame_info.layer = 4 - HDR_GET_LAYER(hdr); - frame_info.bitrate_kbps = hdr_bitrate_kbps(hdr); - frame_info.frame_bytes = frame_size; - - readed += i; - if (callback) - { - if ((ret = callback(user_data, hdr, frame_size, free_format_bytes, filled - consumed, readed, &frame_info))) - return ret; - } - readed += frame_size; - consumed += i + frame_size; - if (!eof && filled - consumed < MINIMP3_BUF_SIZE) - { /* keep minimum 10 consecutive mp3 frames (~16KB) worst case */ - memmove(buf, buf + consumed, filled - consumed); - filled -= consumed; - consumed = 0; - size_t readed = io->read(buf + filled, buf_size - filled, io->read_data); - if (readed > (buf_size - filled)) - return MP3D_E_IOERROR; - if (readed != (buf_size - filled)) - eof = 1; - filled += readed; - if (eof) - mp3dec_skip_id3v1(buf, &filled); - } - } while (1); - return 0; -} - -static int mp3dec_load_index(void *user_data, const uint8_t *frame, int frame_size, int free_format_bytes, size_t buf_size, uint64_t offset, mp3dec_frame_info_t *info) -{ - mp3dec_frame_t *idx_frame; - mp3dec_ex_t *dec = (mp3dec_ex_t *)user_data; - if (!dec->index.frames && !dec->start_offset) - { /* detect VBR tag and try to avoid full scan */ - uint32_t frames; - int delay, padding; - dec->info = *info; - dec->start_offset = dec->offset = offset; - dec->end_offset = offset + buf_size; - dec->free_format_bytes = free_format_bytes; /* should not change */ - if (3 == dec->info.layer) - { - int ret = mp3dec_check_vbrtag(frame, frame_size, &frames, &delay, &padding); - if (ret) - dec->start_offset = dec->offset = offset + frame_size; - if (ret > 0) - { - padding *= info->channels; - dec->start_delay = dec->to_skip = delay*info->channels; - dec->samples = hdr_frame_samples(frame)*info->channels*(uint64_t)frames; - if (dec->samples >= (uint64_t)dec->start_delay) - dec->samples -= dec->start_delay; - if (padding > 0 && dec->samples >= (uint64_t)padding) - dec->samples -= padding; - dec->detected_samples = dec->samples; - dec->vbr_tag_found = 1; - return MP3D_E_USER; - } else if (ret < 0) - return 0; - } - } - if (dec->flags & MP3D_DO_NOT_SCAN) - return MP3D_E_USER; - if (dec->index.num_frames + 1 > dec->index.capacity) - { - if (!dec->index.capacity) - dec->index.capacity = 4096; - else - dec->index.capacity *= 2; - mp3dec_frame_t *alloc_buf = (mp3dec_frame_t *)realloc((void*)dec->index.frames, sizeof(mp3dec_frame_t)*dec->index.capacity); - if (!alloc_buf) - return MP3D_E_MEMORY; - dec->index.frames = alloc_buf; - } - idx_frame = &dec->index.frames[dec->index.num_frames++]; - idx_frame->offset = offset; - idx_frame->sample = dec->samples; - if (!dec->buffer_samples && dec->index.num_frames < 256) - { /* for some cutted mp3 frames, bit-reservoir not filled and decoding can't be started from first frames */ - /* try to decode up to 255 first frames till samples starts to decode */ - dec->buffer_samples = mp3dec_decode_frame(&dec->mp3d, frame, MINIMP3_MIN(buf_size, (size_t)INT_MAX), dec->buffer, info); - dec->samples += dec->buffer_samples*info->channels; - } else - dec->samples += hdr_frame_samples(frame)*info->channels; - return 0; -} - -int mp3dec_ex_open_buf(mp3dec_ex_t *dec, const uint8_t *buf, size_t buf_size, int flags) -{ - if (!dec || !buf || (size_t)-1 == buf_size || (flags & (~MP3D_FLAGS_MASK))) - return MP3D_E_PARAM; - memset(dec, 0, sizeof(*dec)); - dec->file.buffer = buf; - dec->file.size = buf_size; - dec->flags = flags; - mp3dec_init(&dec->mp3d); - int ret = mp3dec_iterate_buf(dec->file.buffer, dec->file.size, mp3dec_load_index, dec); - if (ret && MP3D_E_USER != ret) - return ret; - mp3dec_init(&dec->mp3d); - dec->buffer_samples = 0; - dec->indexes_built = !(dec->vbr_tag_found || (flags & MP3D_DO_NOT_SCAN)); - dec->flags &= (~MP3D_DO_NOT_SCAN); - return 0; -} - -#ifndef MINIMP3_SEEK_IDX_LINEAR_SEARCH -static size_t mp3dec_idx_binary_search(mp3dec_index_t *idx, uint64_t position) -{ - size_t end = idx->num_frames, start = 0, index = 0; - while (start <= end) - { - size_t mid = (start + end) / 2; - if (idx->frames[mid].sample >= position) - { /* move left side. */ - if (idx->frames[mid].sample == position) - return mid; - end = mid - 1; - } else - { /* move to right side */ - index = mid; - start = mid + 1; - if (start == idx->num_frames) - break; - } - } - return index; -} -#endif - -int mp3dec_ex_seek(mp3dec_ex_t *dec, uint64_t position) -{ - size_t i; - if (!dec) - return MP3D_E_PARAM; - if (!(dec->flags & MP3D_SEEK_TO_SAMPLE)) - { - if (dec->io) - { - dec->offset = position; - } else - { - dec->offset = MINIMP3_MIN(position, dec->file.size); - } - dec->cur_sample = 0; - goto do_exit; - } - dec->cur_sample = position; - position += dec->start_delay; - if (0 == position) - { /* optimize seek to zero, no index needed */ -seek_zero: - dec->offset = dec->start_offset; - dec->to_skip = 0; - goto do_exit; - } - if (!dec->indexes_built) - { /* no index created yet (vbr tag used to calculate track length or MP3D_DO_NOT_SCAN open flag used) */ - dec->indexes_built = 1; - dec->samples = 0; - dec->buffer_samples = 0; - if (dec->io) - { - if (dec->io->seek(dec->start_offset, dec->io->seek_data)) - return MP3D_E_IOERROR; - int ret = mp3dec_iterate_cb(dec->io, (uint8_t *)dec->file.buffer, dec->file.size, mp3dec_load_index, dec); - if (ret && MP3D_E_USER != ret) - return ret; - } else - { - int ret = mp3dec_iterate_buf(dec->file.buffer + dec->start_offset, dec->file.size - dec->start_offset, mp3dec_load_index, dec); - if (ret && MP3D_E_USER != ret) - return ret; - } - for (i = 0; i < dec->index.num_frames; i++) - dec->index.frames[i].offset += dec->start_offset; - dec->samples = dec->detected_samples; - } - if (!dec->index.frames) - goto seek_zero; /* no frames in file - seek to zero */ -#ifdef MINIMP3_SEEK_IDX_LINEAR_SEARCH - for (i = 0; i < dec->index.num_frames; i++) - { - if (dec->index.frames[i].sample >= position) - break; - } -#else - i = mp3dec_idx_binary_search(&dec->index, position); -#endif - if (i) - { - int to_fill_bytes = 511; - int skip_frames = MINIMP3_PREDECODE_FRAMES -#ifdef MINIMP3_SEEK_IDX_LINEAR_SEARCH - + ((dec->index.frames[i].sample == position) ? 0 : 1) -#endif - ; - i -= MINIMP3_MIN(i, (size_t)skip_frames); - if (3 == dec->info.layer) - { - while (i && to_fill_bytes) - { /* make sure bit-reservoir is filled when we start decoding */ - bs_t bs[1]; - L3_gr_info_t gr_info[4]; - int frame_bytes, frame_size; - const uint8_t *hdr; - if (dec->io) - { - hdr = dec->file.buffer; - if (dec->io->seek(dec->index.frames[i - 1].offset, dec->io->seek_data)) - return MP3D_E_IOERROR; - size_t readed = dec->io->read((uint8_t *)hdr, HDR_SIZE, dec->io->read_data); - if (readed != HDR_SIZE) - return MP3D_E_IOERROR; - frame_size = hdr_frame_bytes(hdr, dec->free_format_bytes) + hdr_padding(hdr); - readed = dec->io->read((uint8_t *)hdr + HDR_SIZE, frame_size - HDR_SIZE, dec->io->read_data); - if (readed != (size_t)(frame_size - HDR_SIZE)) - return MP3D_E_IOERROR; - bs_init(bs, hdr + HDR_SIZE, frame_size - HDR_SIZE); - } else - { - hdr = dec->file.buffer + dec->index.frames[i - 1].offset; - frame_size = hdr_frame_bytes(hdr, dec->free_format_bytes) + hdr_padding(hdr); - bs_init(bs, hdr + HDR_SIZE, frame_size - HDR_SIZE); - } - if (HDR_IS_CRC(hdr)) - get_bits(bs, 16); - i--; - if (L3_read_side_info(bs, gr_info, hdr) < 0) - break; /* frame not decodable, we can start from here */ - frame_bytes = (bs->limit - bs->pos)/8; - to_fill_bytes -= MINIMP3_MIN(to_fill_bytes, frame_bytes); - } - } - } - dec->offset = dec->index.frames[i].offset; - dec->to_skip = position - dec->index.frames[i].sample; - while ((i + 1) < dec->index.num_frames && !dec->index.frames[i].sample && !dec->index.frames[i + 1].sample) - { /* skip not decodable first frames */ - const uint8_t *hdr; - if (dec->io) - { - hdr = dec->file.buffer; - if (dec->io->seek(dec->index.frames[i].offset, dec->io->seek_data)) - return MP3D_E_IOERROR; - size_t readed = dec->io->read((uint8_t *)hdr, HDR_SIZE, dec->io->read_data); - if (readed != HDR_SIZE) - return MP3D_E_IOERROR; - } else - hdr = dec->file.buffer + dec->index.frames[i].offset; - dec->to_skip += hdr_frame_samples(hdr)*dec->info.channels; - i++; - } -do_exit: - if (dec->io) - { - if (dec->io->seek(dec->offset, dec->io->seek_data)) - return MP3D_E_IOERROR; - } - dec->buffer_samples = 0; - dec->buffer_consumed = 0; - dec->input_consumed = 0; - dec->input_filled = 0; - dec->last_error = 0; - mp3dec_init(&dec->mp3d); - return 0; -} - -size_t mp3dec_ex_read_frame(mp3dec_ex_t *dec, mp3d_sample_t **buf, mp3dec_frame_info_t *frame_info, size_t max_samples) -{ - if (!dec || !buf || !frame_info) - { - if (dec) - dec->last_error = MP3D_E_PARAM; - return 0; - } - if (dec->detected_samples && dec->cur_sample >= dec->detected_samples) - return 0; /* at end of stream */ - if (dec->last_error) - return 0; /* error eof state, seek can reset it */ - *buf = NULL; - uint64_t end_offset = dec->end_offset ? dec->end_offset : dec->file.size; - int eof = 0; - while (dec->buffer_consumed == dec->buffer_samples) - { - const uint8_t *dec_buf; - if (dec->io) - { - if (!eof && (dec->input_filled - dec->input_consumed) < MINIMP3_BUF_SIZE) - { /* keep minimum 10 consecutive mp3 frames (~16KB) worst case */ - memmove((uint8_t*)dec->file.buffer, (uint8_t*)dec->file.buffer + dec->input_consumed, dec->input_filled - dec->input_consumed); - dec->input_filled -= dec->input_consumed; - dec->input_consumed = 0; - size_t readed = dec->io->read((uint8_t*)dec->file.buffer + dec->input_filled, dec->file.size - dec->input_filled, dec->io->read_data); - if (readed > (dec->file.size - dec->input_filled)) - { - dec->last_error = MP3D_E_IOERROR; - readed = 0; - } - if (readed != (dec->file.size - dec->input_filled)) - eof = 1; - dec->input_filled += readed; - if (eof) - mp3dec_skip_id3v1((uint8_t*)dec->file.buffer, &dec->input_filled); - } - dec_buf = dec->file.buffer + dec->input_consumed; - if (!(dec->input_filled - dec->input_consumed)) - return 0; - dec->buffer_samples = mp3dec_decode_frame(&dec->mp3d, dec_buf, dec->input_filled - dec->input_consumed, dec->buffer, frame_info); - dec->input_consumed += frame_info->frame_bytes; - } else - { - dec_buf = dec->file.buffer + dec->offset; - uint64_t buf_size = end_offset - dec->offset; - if (!buf_size) - return 0; - dec->buffer_samples = mp3dec_decode_frame(&dec->mp3d, dec_buf, MINIMP3_MIN(buf_size, (uint64_t)INT_MAX), dec->buffer, frame_info); - } - dec->buffer_consumed = 0; - if (dec->info.hz != frame_info->hz || dec->info.layer != frame_info->layer) - { -return_e_decode: - dec->last_error = MP3D_E_DECODE; - return 0; - } - if (dec->buffer_samples) - { - dec->buffer_samples *= frame_info->channels; - if (dec->to_skip) - { - size_t skip = MINIMP3_MIN(dec->buffer_samples, dec->to_skip); - dec->buffer_consumed += skip; - dec->to_skip -= skip; - } - if ( -#ifdef MINIMP3_ALLOW_MONO_STEREO_TRANSITION - !(dec->flags & MP3D_ALLOW_MONO_STEREO_TRANSITION) && -#endif - dec->buffer_consumed != dec->buffer_samples && dec->info.channels != frame_info->channels) - { - goto return_e_decode; - } - } else if (dec->to_skip) - { /* In mp3 decoding not always can start decode from any frame because of bit reservoir, - count skip samples for such frames */ - int frame_samples = hdr_frame_samples(dec_buf)*frame_info->channels; - dec->to_skip -= MINIMP3_MIN(frame_samples, dec->to_skip); - } - dec->offset += frame_info->frame_bytes; - } - size_t out_samples = MINIMP3_MIN((size_t)(dec->buffer_samples - dec->buffer_consumed), max_samples); - if (dec->detected_samples) - { /* count decoded samples to properly cut padding */ - if (dec->cur_sample + out_samples >= dec->detected_samples) - out_samples = dec->detected_samples - dec->cur_sample; - } - dec->cur_sample += out_samples; - *buf = dec->buffer + dec->buffer_consumed; - dec->buffer_consumed += out_samples; - return out_samples; -} - -size_t mp3dec_ex_read(mp3dec_ex_t *dec, mp3d_sample_t *buf, size_t samples) -{ - if (!dec || !buf) - { - if (dec) - dec->last_error = MP3D_E_PARAM; - return 0; - } - mp3dec_frame_info_t frame_info; - memset(&frame_info, 0, sizeof(frame_info)); - size_t samples_requested = samples; - while (samples) - { - mp3d_sample_t *buf_frame = NULL; - size_t read_samples = mp3dec_ex_read_frame(dec, &buf_frame, &frame_info, samples); - if (!read_samples) - { - break; - } - memcpy(buf, buf_frame, read_samples * sizeof(mp3d_sample_t)); - buf += read_samples; - samples -= read_samples; - } - return samples_requested - samples; -} - -int mp3dec_ex_open_cb(mp3dec_ex_t *dec, mp3dec_io_t *io, int flags) -{ - if (!dec || !io || (flags & (~MP3D_FLAGS_MASK))) - return MP3D_E_PARAM; - memset(dec, 0, sizeof(*dec)); -#ifdef MINIMP3_HAVE_RING - int ret; - if (ret = mp3dec_open_ring(&dec->file, MINIMP3_IO_SIZE)) - return ret; -#else - dec->file.size = MINIMP3_IO_SIZE; - dec->file.buffer = (const uint8_t*)malloc(dec->file.size); - if (!dec->file.buffer) - return MP3D_E_MEMORY; -#endif - dec->flags = flags; - dec->io = io; - mp3dec_init(&dec->mp3d); - if (io->seek(0, io->seek_data)) - return MP3D_E_IOERROR; - int ret = mp3dec_iterate_cb(io, (uint8_t *)dec->file.buffer, dec->file.size, mp3dec_load_index, dec); - if (ret && MP3D_E_USER != ret) - return ret; - if (dec->io->seek(dec->start_offset, dec->io->seek_data)) - return MP3D_E_IOERROR; - mp3dec_init(&dec->mp3d); - dec->buffer_samples = 0; - dec->indexes_built = !(dec->vbr_tag_found || (flags & MP3D_DO_NOT_SCAN)); - dec->flags &= (~MP3D_DO_NOT_SCAN); - return 0; -} - - -#ifndef MINIMP3_NO_STDIO - -#if defined(__linux__) || defined(__FreeBSD__) -#include <errno.h> -#include <sys/mman.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <unistd.h> -#include <fcntl.h> -#if !defined(_GNU_SOURCE) -#include <sys/ipc.h> -#include <sys/shm.h> -#endif -#if !defined(MAP_POPULATE) && defined(__linux__) -#define MAP_POPULATE 0x08000 -#elif !defined(MAP_POPULATE) -#define MAP_POPULATE 0 -#endif - -static void mp3dec_close_file(mp3dec_map_info_t *map_info) -{ - if (map_info->buffer && MAP_FAILED != map_info->buffer) - munmap((void *)map_info->buffer, map_info->size); - map_info->buffer = 0; - map_info->size = 0; -} - -static int mp3dec_open_file(const char *file_name, mp3dec_map_info_t *map_info) -{ - if (!file_name) - return MP3D_E_PARAM; - int file; - struct stat st; - memset(map_info, 0, sizeof(*map_info)); -retry_open: - file = open(file_name, O_RDONLY); - if (file < 0 && (errno == EAGAIN || errno == EINTR)) - goto retry_open; - if (file < 0 || fstat(file, &st) < 0) - { - close(file); - return MP3D_E_IOERROR; - } - - map_info->size = st.st_size; -retry_mmap: - map_info->buffer = (const uint8_t *)mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE | MAP_POPULATE, file, 0); - if (MAP_FAILED == map_info->buffer && (errno == EAGAIN || errno == EINTR)) - goto retry_mmap; - close(file); - if (MAP_FAILED == map_info->buffer) - return MP3D_E_IOERROR; - return 0; -} - -#if MINIMP3_ENABLE_RING && defined(__linux__) && defined(_GNU_SOURCE) -#define MINIMP3_HAVE_RING -static void mp3dec_close_ring(mp3dec_map_info_t *map_info) -{ -#if defined(__linux__) && defined(_GNU_SOURCE) - if (map_info->buffer && MAP_FAILED != map_info->buffer) - munmap((void *)map_info->buffer, map_info->size*2); -#else - if (map_info->buffer) - { - shmdt(map_info->buffer); - shmdt(map_info->buffer + map_info->size); - } -#endif - map_info->buffer = 0; - map_info->size = 0; -} - -static int mp3dec_open_ring(mp3dec_map_info_t *map_info, size_t size) -{ - int memfd, page_size; -#if defined(__linux__) && defined(_GNU_SOURCE) - void *buffer; - int res; -#endif - memset(map_info, 0, sizeof(*map_info)); - -#ifdef _SC_PAGESIZE - page_size = sysconf(_SC_PAGESIZE); -#else - page_size = getpagesize(); -#endif - map_info->size = (size + page_size - 1)/page_size*page_size; - -#if defined(__linux__) && defined(_GNU_SOURCE) - memfd = memfd_create("mp3_ring", 0); - if (memfd < 0) - return MP3D_E_MEMORY; - -retry_ftruncate: - res = ftruncate(memfd, map_info->size); - if (res && (errno == EAGAIN || errno == EINTR)) - goto retry_ftruncate; - if (res) - goto error; - -retry_mmap: - map_info->buffer = (const uint8_t *)mmap(NULL, map_info->size*2, PROT_NONE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); - if (MAP_FAILED == map_info->buffer && (errno == EAGAIN || errno == EINTR)) - goto retry_mmap; - if (MAP_FAILED == map_info->buffer || !map_info->buffer) - goto error; -retry_mmap2: - buffer = mmap((void *)map_info->buffer, map_info->size, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_SHARED, memfd, 0); - if (MAP_FAILED == map_info->buffer && (errno == EAGAIN || errno == EINTR)) - goto retry_mmap2; - if (MAP_FAILED == map_info->buffer || buffer != (void *)map_info->buffer) - goto error; -retry_mmap3: - buffer = mmap((void *)map_info->buffer + map_info->size, map_info->size, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_SHARED, memfd, 0); - if (MAP_FAILED == map_info->buffer && (errno == EAGAIN || errno == EINTR)) - goto retry_mmap3; - if (MAP_FAILED == map_info->buffer || buffer != (void *)(map_info->buffer + map_info->size)) - goto error; - - close(memfd); - return 0; -error: - close(memfd); - mp3dec_close_ring(map_info); - return MP3D_E_MEMORY; -#else - memfd = shmget(IPC_PRIVATE, map_info->size, IPC_CREAT | 0700); - if (memfd < 0) - return MP3D_E_MEMORY; -retry_mmap: - map_info->buffer = (const uint8_t *)mmap(NULL, map_info->size*2, PROT_NONE, MAP_PRIVATE, -1, 0); - if (MAP_FAILED == map_info->buffer && (errno == EAGAIN || errno == EINTR)) - goto retry_mmap; - if (MAP_FAILED == map_info->buffer) - goto error; - if (map_info->buffer != shmat(memfd, map_info->buffer, 0)) - goto error; - if ((map_info->buffer + map_info->size) != shmat(memfd, map_info->buffer + map_info->size, 0)) - goto error; - if (shmctl(memfd, IPC_RMID, NULL) < 0) - return MP3D_E_MEMORY; - return 0; -error: - shmctl(memfd, IPC_RMID, NULL); - mp3dec_close_ring(map_info); - return MP3D_E_MEMORY; -#endif -} -#endif /*MINIMP3_ENABLE_RING*/ -#elif defined(_WIN32) -#include <windows.h> - -static void mp3dec_close_file(mp3dec_map_info_t *map_info) -{ - if (map_info->buffer) - UnmapViewOfFile(map_info->buffer); - map_info->buffer = 0; - map_info->size = 0; -} - -static int mp3dec_open_file_h(HANDLE file, mp3dec_map_info_t *map_info) -{ - memset(map_info, 0, sizeof(*map_info)); - - HANDLE mapping = NULL; - LARGE_INTEGER s; - s.LowPart = GetFileSize(file, (DWORD*)&s.HighPart); - if (s.LowPart == INVALID_FILE_SIZE && GetLastError() != NO_ERROR) - goto error; - map_info->size = s.QuadPart; - - mapping = CreateFileMapping(file, NULL, PAGE_READONLY, 0, 0, NULL); - if (!mapping) - goto error; - map_info->buffer = (const uint8_t*)MapViewOfFile(mapping, FILE_MAP_READ, 0, 0, s.QuadPart); - CloseHandle(mapping); - if (!map_info->buffer) - goto error; - - CloseHandle(file); - return 0; -error: - mp3dec_close_file(map_info); - CloseHandle(file); - return MP3D_E_IOERROR; -} - -static int mp3dec_open_file(const char *file_name, mp3dec_map_info_t *map_info) -{ - if (!file_name) - return MP3D_E_PARAM; - HANDLE file = CreateFileA(file_name, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0); - if (INVALID_HANDLE_VALUE == file) - return MP3D_E_IOERROR; - return mp3dec_open_file_h(file, map_info); -} - -static int mp3dec_open_file_w(const wchar_t *file_name, mp3dec_map_info_t *map_info) -{ - if (!file_name) - return MP3D_E_PARAM; - HANDLE file = CreateFileW(file_name, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0); - if (INVALID_HANDLE_VALUE == file) - return MP3D_E_IOERROR; - return mp3dec_open_file_h(file, map_info); -} -#else -#include <stdio.h> - -static void mp3dec_close_file(mp3dec_map_info_t *map_info) -{ - if (map_info->buffer) - free((void *)map_info->buffer); - map_info->buffer = 0; - map_info->size = 0; -} - -static int mp3dec_open_file(const char *file_name, mp3dec_map_info_t *map_info) -{ - if (!file_name) - return MP3D_E_PARAM; - memset(map_info, 0, sizeof(*map_info)); - FILE *file = fopen(file_name, "rb"); - if (!file) - return MP3D_E_IOERROR; - int res = MP3D_E_IOERROR; - long size = -1; - if (fseek(file, 0, SEEK_END)) - goto error; - size = ftell(file); - if (size < 0) - goto error; - map_info->size = (size_t)size; - if (fseek(file, 0, SEEK_SET)) - goto error; - map_info->buffer = (uint8_t *)malloc(map_info->size); - if (!map_info->buffer) - { - res = MP3D_E_MEMORY; - goto error; - } - if (fread((void *)map_info->buffer, 1, map_info->size, file) != map_info->size) - goto error; - fclose(file); - return 0; -error: - mp3dec_close_file(map_info); - fclose(file); - return res; -} -#endif - -static int mp3dec_detect_mapinfo(mp3dec_map_info_t *map_info) -{ - int ret = mp3dec_detect_buf(map_info->buffer, map_info->size); - mp3dec_close_file(map_info); - return ret; -} - -static int mp3dec_load_mapinfo(mp3dec_t *dec, mp3dec_map_info_t *map_info, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data) -{ - int ret = mp3dec_load_buf(dec, map_info->buffer, map_info->size, info, progress_cb, user_data); - mp3dec_close_file(map_info); - return ret; -} - -static int mp3dec_iterate_mapinfo(mp3dec_map_info_t *map_info, MP3D_ITERATE_CB callback, void *user_data) -{ - int ret = mp3dec_iterate_buf(map_info->buffer, map_info->size, callback, user_data); - mp3dec_close_file(map_info); - return ret; -} - -static int mp3dec_ex_open_mapinfo(mp3dec_ex_t *dec, int flags) -{ - int ret = mp3dec_ex_open_buf(dec, dec->file.buffer, dec->file.size, flags); - dec->is_file = 1; - if (ret) - mp3dec_ex_close(dec); - return ret; -} - -int mp3dec_detect(const char *file_name) -{ - int ret; - mp3dec_map_info_t map_info; - if ((ret = mp3dec_open_file(file_name, &map_info))) - return ret; - return mp3dec_detect_mapinfo(&map_info); -} - -int mp3dec_load(mp3dec_t *dec, const char *file_name, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data) -{ - int ret; - mp3dec_map_info_t map_info; - if ((ret = mp3dec_open_file(file_name, &map_info))) - return ret; - return mp3dec_load_mapinfo(dec, &map_info, info, progress_cb, user_data); -} - -int mp3dec_iterate(const char *file_name, MP3D_ITERATE_CB callback, void *user_data) -{ - int ret; - mp3dec_map_info_t map_info; - if ((ret = mp3dec_open_file(file_name, &map_info))) - return ret; - return mp3dec_iterate_mapinfo(&map_info, callback, user_data); -} - -int mp3dec_ex_open(mp3dec_ex_t *dec, const char *file_name, int flags) -{ - int ret; - if (!dec) - return MP3D_E_PARAM; - if ((ret = mp3dec_open_file(file_name, &dec->file))) - return ret; - return mp3dec_ex_open_mapinfo(dec, flags); -} - -void mp3dec_ex_close(mp3dec_ex_t *dec) -{ -#ifdef MINIMP3_HAVE_RING - if (dec->io) - mp3dec_close_ring(&dec->file); -#else - if (dec->io && dec->file.buffer) - free((void*)dec->file.buffer); -#endif - if (dec->is_file) - mp3dec_close_file(&dec->file); - if (dec->index.frames) - free(dec->index.frames); - memset(dec, 0, sizeof(*dec)); -} - -#ifdef _WIN32 -int mp3dec_detect_w(const wchar_t *file_name) -{ - int ret; - mp3dec_map_info_t map_info; - if ((ret = mp3dec_open_file_w(file_name, &map_info))) - return ret; - return mp3dec_detect_mapinfo(&map_info); -} - -int mp3dec_load_w(mp3dec_t *dec, const wchar_t *file_name, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data) -{ - int ret; - mp3dec_map_info_t map_info; - if ((ret = mp3dec_open_file_w(file_name, &map_info))) - return ret; - return mp3dec_load_mapinfo(dec, &map_info, info, progress_cb, user_data); -} - -int mp3dec_iterate_w(const wchar_t *file_name, MP3D_ITERATE_CB callback, void *user_data) -{ - int ret; - mp3dec_map_info_t map_info; - if ((ret = mp3dec_open_file_w(file_name, &map_info))) - return ret; - return mp3dec_iterate_mapinfo(&map_info, callback, user_data); -} - -int mp3dec_ex_open_w(mp3dec_ex_t *dec, const wchar_t *file_name, int flags) -{ - int ret; - if ((ret = mp3dec_open_file_w(file_name, &dec->file))) - return ret; - return mp3dec_ex_open_mapinfo(dec, flags); -} -#endif -#else /* MINIMP3_NO_STDIO */ -void mp3dec_ex_close(mp3dec_ex_t *dec) -{ -#ifdef MINIMP3_HAVE_RING - if (dec->io) - mp3dec_close_ring(&dec->file); -#else - if (dec->io && dec->file.buffer) - free((void*)dec->file.buffer); -#endif - if (dec->index.frames) - free(dec->index.frames); - memset(dec, 0, sizeof(*dec)); -} -#endif - -#endif /*MINIMP3_IMPLEMENTATION*/ |