diff options
Diffstat (limited to '3rdparty/minimp3/minimp3_ex.h')
-rw-r--r-- | 3rdparty/minimp3/minimp3_ex.h | 392 |
1 files changed, 0 insertions, 392 deletions
diff --git a/3rdparty/minimp3/minimp3_ex.h b/3rdparty/minimp3/minimp3_ex.h deleted file mode 100644 index 9e370e2c0ed..00000000000 --- a/3rdparty/minimp3/minimp3_ex.h +++ /dev/null @@ -1,392 +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" - -#define MP3D_SEEK_TO_BYTE 0 -#define MP3D_SEEK_TO_SAMPLE 1 -#define MP3D_SEEK_TO_SAMPLE_INDEXED 2 - -typedef struct -{ - mp3d_sample_t *buffer; - size_t samples; /* channels included, byte size = samples*sizeof(int16_t) */ - int channels, hz, layer, avg_bitrate_kbps, frame_bytes; -} mp3dec_file_info_t; - -typedef struct -{ - const uint8_t *buffer; - size_t size; -} mp3dec_map_info_t; - -typedef struct -{ - mp3dec_t mp3d; - mp3dec_map_info_t file; - int seek_method; -#ifndef MINIMP3_NO_STDIO - int is_file; -#endif -} mp3dec_ex_t; - -typedef int (*MP3D_ITERATE_CB)(void *user_data, const uint8_t *frame, int frame_size, size_t offset, mp3dec_frame_info_t *info); -typedef int (*MP3D_PROGRESS_CB)(void *user_data, size_t file_size, size_t offset, mp3dec_frame_info_t *info); - -#ifdef __cplusplus -extern "C" { -#endif -size_t mp3dec_skip_id3v2(const uint8_t *buf, size_t buf_size); - -/* decode whole buffer block */ -void 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); -/* iterate through frames with optional decoding */ -void mp3dec_iterate_buf(const uint8_t *buf, size_t buf_size, MP3D_ITERATE_CB callback, void *user_data); -/* decoder with seeking capability */ -int mp3dec_ex_open_buf(mp3dec_ex_t *dec, const uint8_t *buf, size_t buf_size, int seek_method); -void mp3dec_ex_close(mp3dec_ex_t *dec); -void mp3dec_ex_seek(mp3dec_ex_t *dec, size_t position); -int mp3dec_ex_read(mp3dec_ex_t *dec, int16_t *buf, int samples); -#ifndef MINIMP3_NO_STDIO -/* stdio versions with file pre-load */ -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 seek_method); -#endif - -#ifdef __cplusplus -} -#endif -#endif /*MINIMP3_EXT_H*/ - -#ifdef MINIMP3_IMPLEMENTATION - -size_t mp3dec_skip_id3v2(const uint8_t *buf, size_t buf_size) -{ - if (buf_size > 10 && !strncmp((char *)buf, "ID3", 3)) - { - return (((buf[6] & 0x7f) << 21) | ((buf[7] & 0x7f) << 14) | - ((buf[8] & 0x7f) << 7) | (buf[9] & 0x7f)) + 10; - } - return 0; -} - -void 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) -{ - size_t orig_buf_size = buf_size; - mp3d_sample_t pcm[MINIMP3_MAX_SAMPLES_PER_FRAME]; - mp3dec_frame_info_t frame_info; - memset(info, 0, sizeof(*info)); - memset(&frame_info, 0, sizeof(frame_info)); - /* skip id3v2 */ - size_t id3v2size = mp3dec_skip_id3v2(buf, buf_size); - if (id3v2size > buf_size) - return; - buf += id3v2size; - buf_size -= id3v2size; - /* try to make allocation size assumption by first frame */ - mp3dec_init(dec); - int samples; - do - { - samples = mp3dec_decode_frame(dec, buf, buf_size, pcm, &frame_info); - buf += frame_info.frame_bytes; - buf_size -= frame_info.frame_bytes; - if (samples) { - info->frame_bytes += frame_info.frame_bytes + id3v2size; - break; - } - } while (frame_info.frame_bytes); - if (!samples) - return; - samples *= frame_info.channels; - size_t allocated = (buf_size/frame_info.frame_bytes)*samples*sizeof(mp3d_sample_t) + MINIMP3_MAX_SAMPLES_PER_FRAME*sizeof(mp3d_sample_t); - info->buffer = (mp3d_sample_t*)malloc(allocated); - if (!info->buffer) - return; - info->samples = samples; - memcpy(info->buffer, pcm, info->samples*sizeof(mp3d_sample_t)); - /* save info */ - info->channels = frame_info.channels; - info->hz = frame_info.hz; - info->layer = frame_info.layer; - size_t avg_bitrate_kbps = frame_info.bitrate_kbps; - size_t frames = 1; - /* decode rest frames */ - int frame_bytes; - do - { - if ((allocated - info->samples*sizeof(mp3d_sample_t)) < MINIMP3_MAX_SAMPLES_PER_FRAME*sizeof(mp3d_sample_t)) - { - allocated *= 2; - info->buffer = (mp3d_sample_t*)realloc(info->buffer, allocated); - } - samples = mp3dec_decode_frame(dec, buf, buf_size, info->buffer + info->samples, &frame_info); - frame_bytes = frame_info.frame_bytes; - buf += frame_bytes; - buf_size -= frame_bytes; - if (samples) - { - info->frame_bytes += frame_info.frame_bytes; - - if (info->hz != frame_info.hz || info->layer != frame_info.layer) - 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 - break; -#endif - - info->samples += samples*frame_info.channels; - avg_bitrate_kbps += frame_info.bitrate_kbps; - frames++; - if (progress_cb) - progress_cb(user_data, orig_buf_size, orig_buf_size - buf_size, &frame_info); - } - } while (frame_bytes); - /* reallocate to normal buffer size */ - if (allocated != info->samples*sizeof(mp3d_sample_t)) - info->buffer = (mp3d_sample_t*)realloc(info->buffer, info->samples*sizeof(mp3d_sample_t)); - info->avg_bitrate_kbps = avg_bitrate_kbps/frames; -} - -void mp3dec_iterate_buf(const uint8_t *buf, size_t buf_size, MP3D_ITERATE_CB callback, void *user_data) -{ - if (!callback) - return; - mp3dec_frame_info_t frame_info; - memset(&frame_info, 0, sizeof(frame_info)); - /* skip id3v2 */ - size_t id3v2size = mp3dec_skip_id3v2(buf, buf_size); - if (id3v2size > buf_size) - return; - const uint8_t *orig_buf = buf; - buf += id3v2size; - buf_size -= id3v2size; - do - { - int free_format_bytes = 0, frame_size = 0; - 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(user_data, hdr, frame_size, hdr - orig_buf, &frame_info)) - break; - buf += frame_size; - buf_size -= frame_size; - } while (1); -} - -int mp3dec_ex_open_buf(mp3dec_ex_t *dec, const uint8_t *buf, size_t buf_size, int seek_method) -{ - memset(dec, 0, sizeof(*dec)); - dec->file.buffer = buf; - dec->file.size = buf_size; - dec->seek_method = seek_method; - mp3dec_init(&dec->mp3d); - return 0; -} - -/*void mp3dec_ex_seek(mp3dec_ex_t *dec, size_t position) -{ -} - -int mp3dec_ex_read(mp3dec_ex_t *dec, int16_t *buf, int samples) -{ - 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(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) -{ - 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 -1; - } - - 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 -1; - return 0; -} -#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(const char *file_name, mp3dec_map_info_t *map_info) -{ - memset(map_info, 0, sizeof(*map_info)); - - HANDLE file = CreateFileA(file_name, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0); - if (INVALID_HANDLE_VALUE == file) - return -1; - 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; - - HANDLE mapping = CreateFileMapping(file, NULL, PAGE_READONLY, 0, 0, NULL); - if (!mapping) - goto error; - map_info->buffer = 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 -1; -} -#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) -{ - memset(map_info, 0, sizeof(*map_info)); - FILE *file = fopen(file_name, "rb"); - if (!file) - return -1; - 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) - 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 -1; -} -#endif - -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; - mp3dec_load_buf(dec, map_info.buffer, map_info.size, info, progress_cb, user_data); - mp3dec_close_file(&map_info); - return 0; -} - -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; - mp3dec_iterate_buf(map_info.buffer, map_info.size, callback, user_data); - mp3dec_close_file(&map_info); - return 0; -} - -void mp3dec_ex_close(mp3dec_ex_t *dec) -{ - if (dec->is_file) - mp3dec_close_file(&dec->file); - else - free((void *)dec->file.buffer); - memset(dec, 0, sizeof(*dec)); -} - -int mp3dec_ex_open(mp3dec_ex_t *dec, const char *file_name, int seek_method) -{ - int ret; - memset(dec, 0, sizeof(*dec)); - if ((ret = mp3dec_open_file(file_name, &dec->file))) - return ret; - dec->seek_method = seek_method; - dec->is_file = 1; - mp3dec_init(&dec->mp3d); - return 0; -} -#else -void mp3dec_ex_close(mp3dec_ex_t *dec) -{ - free((void*)dec->file.buffer); - memset(dec, 0, sizeof(*dec)); -} -#endif - -#endif /*MINIMP3_IMPLEMENTATION*/ |