diff options
Diffstat (limited to 'src/read-wav.c')
| -rw-r--r-- | src/read-wav.c | 426 |
1 files changed, 214 insertions, 212 deletions
diff --git a/src/read-wav.c b/src/read-wav.c index 95c46c8..0d3a62d 100644 --- a/src/read-wav.c +++ b/src/read-wav.c @@ -1,3 +1,5 @@ +/*-*- Mode: C; c-basic-offset: 8 -*-*/ + /*** This file is part of libcanberra. @@ -31,334 +33,334 @@ /* Stores the bit indexes in dwChannelMask */ enum { - BIT_FRONT_LEFT, - BIT_FRONT_RIGHT, - BIT_FRONT_CENTER, - BIT_LOW_FREQUENCY, - BIT_BACK_LEFT, - BIT_BACK_RIGHT, - BIT_FRONT_LEFT_OF_CENTER, - BIT_FRONT_RIGHT_OF_CENTER, - BIT_BACK_CENTER, - BIT_SIDE_LEFT, - BIT_SIDE_RIGHT, - BIT_TOP_CENTER, - BIT_TOP_FRONT_LEFT, - BIT_TOP_FRONT_CENTER, - BIT_TOP_FRONT_RIGHT, - BIT_TOP_BACK_LEFT, - BIT_TOP_BACK_CENTER, - BIT_TOP_BACK_RIGHT, - _BIT_MAX + BIT_FRONT_LEFT, + BIT_FRONT_RIGHT, + BIT_FRONT_CENTER, + BIT_LOW_FREQUENCY, + BIT_BACK_LEFT, + BIT_BACK_RIGHT, + BIT_FRONT_LEFT_OF_CENTER, + BIT_FRONT_RIGHT_OF_CENTER, + BIT_BACK_CENTER, + BIT_SIDE_LEFT, + BIT_SIDE_RIGHT, + BIT_TOP_CENTER, + BIT_TOP_FRONT_LEFT, + BIT_TOP_FRONT_CENTER, + BIT_TOP_FRONT_RIGHT, + BIT_TOP_BACK_LEFT, + BIT_TOP_BACK_CENTER, + BIT_TOP_BACK_RIGHT, + _BIT_MAX }; static const ca_channel_position_t channel_table[_BIT_MAX] = { - [BIT_FRONT_LEFT] = CA_CHANNEL_FRONT_LEFT, - [BIT_FRONT_RIGHT] = CA_CHANNEL_FRONT_RIGHT, - [BIT_FRONT_CENTER] = CA_CHANNEL_FRONT_CENTER, - [BIT_LOW_FREQUENCY] = CA_CHANNEL_LFE, - [BIT_BACK_LEFT] = CA_CHANNEL_REAR_LEFT, - [BIT_BACK_RIGHT] = CA_CHANNEL_REAR_RIGHT, - [BIT_FRONT_LEFT_OF_CENTER] = CA_CHANNEL_FRONT_LEFT_OF_CENTER, - [BIT_FRONT_RIGHT_OF_CENTER] = CA_CHANNEL_FRONT_RIGHT_OF_CENTER, - [BIT_BACK_CENTER] = CA_CHANNEL_REAR_CENTER, - [BIT_SIDE_LEFT] = CA_CHANNEL_SIDE_LEFT, - [BIT_SIDE_RIGHT] = CA_CHANNEL_SIDE_RIGHT, - [BIT_TOP_CENTER] = CA_CHANNEL_TOP_CENTER, - [BIT_TOP_FRONT_LEFT] = CA_CHANNEL_TOP_FRONT_LEFT, - [BIT_TOP_FRONT_CENTER] = CA_CHANNEL_TOP_FRONT_CENTER, - [BIT_TOP_FRONT_RIGHT] = CA_CHANNEL_TOP_FRONT_RIGHT, - [BIT_TOP_BACK_LEFT] = CA_CHANNEL_TOP_REAR_LEFT, - [BIT_TOP_BACK_CENTER] = CA_CHANNEL_TOP_REAR_CENTER, - [BIT_TOP_BACK_RIGHT] = CA_CHANNEL_TOP_REAR_RIGHT + [BIT_FRONT_LEFT] = CA_CHANNEL_FRONT_LEFT, + [BIT_FRONT_RIGHT] = CA_CHANNEL_FRONT_RIGHT, + [BIT_FRONT_CENTER] = CA_CHANNEL_FRONT_CENTER, + [BIT_LOW_FREQUENCY] = CA_CHANNEL_LFE, + [BIT_BACK_LEFT] = CA_CHANNEL_REAR_LEFT, + [BIT_BACK_RIGHT] = CA_CHANNEL_REAR_RIGHT, + [BIT_FRONT_LEFT_OF_CENTER] = CA_CHANNEL_FRONT_LEFT_OF_CENTER, + [BIT_FRONT_RIGHT_OF_CENTER] = CA_CHANNEL_FRONT_RIGHT_OF_CENTER, + [BIT_BACK_CENTER] = CA_CHANNEL_REAR_CENTER, + [BIT_SIDE_LEFT] = CA_CHANNEL_SIDE_LEFT, + [BIT_SIDE_RIGHT] = CA_CHANNEL_SIDE_RIGHT, + [BIT_TOP_CENTER] = CA_CHANNEL_TOP_CENTER, + [BIT_TOP_FRONT_LEFT] = CA_CHANNEL_TOP_FRONT_LEFT, + [BIT_TOP_FRONT_CENTER] = CA_CHANNEL_TOP_FRONT_CENTER, + [BIT_TOP_FRONT_RIGHT] = CA_CHANNEL_TOP_FRONT_RIGHT, + [BIT_TOP_BACK_LEFT] = CA_CHANNEL_TOP_REAR_LEFT, + [BIT_TOP_BACK_CENTER] = CA_CHANNEL_TOP_REAR_CENTER, + [BIT_TOP_BACK_RIGHT] = CA_CHANNEL_TOP_REAR_RIGHT }; struct ca_wav { - FILE *file; + FILE *file; - off_t data_size; - unsigned nchannels; - unsigned rate; - unsigned depth; - uint32_t channel_mask; + off_t data_size; + unsigned nchannels; + unsigned rate; + unsigned depth; + uint32_t channel_mask; - ca_channel_position_t channel_map[_BIT_MAX]; + ca_channel_position_t channel_map[_BIT_MAX]; }; #define CHUNK_ID_DATA 0x61746164U #define CHUNK_ID_FMT 0x20746d66U static const uint8_t pcm_guid[16] = { - 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 + 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }; static int skip_to_chunk(ca_wav *w, uint32_t id, uint32_t *size) { - ca_return_val_if_fail(w, CA_ERROR_INVALID); - ca_return_val_if_fail(size, CA_ERROR_INVALID); + ca_return_val_if_fail(w, CA_ERROR_INVALID); + ca_return_val_if_fail(size, CA_ERROR_INVALID); - for (;;) { - uint32_t chunk[2]; - uint32_t s; + for (;;) { + uint32_t chunk[2]; + uint32_t s; - if (fread(chunk, sizeof(uint32_t), CA_ELEMENTSOF(chunk), w->file) != CA_ELEMENTSOF(chunk)) - goto fail_io; + if (fread(chunk, sizeof(uint32_t), CA_ELEMENTSOF(chunk), w->file) != CA_ELEMENTSOF(chunk)) + goto fail_io; - s = CA_UINT32_FROM_LE(chunk[1]); + s = CA_UINT32_FROM_LE(chunk[1]); - if (s <= 0 || s >= FILE_SIZE_MAX) - return CA_ERROR_TOOBIG; + if (s <= 0 || s >= FILE_SIZE_MAX) + return CA_ERROR_TOOBIG; - if (CA_UINT32_FROM_LE(chunk[0]) == id) { - *size = s; - break; - } + if (CA_UINT32_FROM_LE(chunk[0]) == id) { + *size = s; + break; + } - if (fseek(w->file, (long) s, SEEK_CUR) < 0) - return CA_ERROR_SYSTEM; - } + if (fseek(w->file, (long) s, SEEK_CUR) < 0) + return CA_ERROR_SYSTEM; + } - return CA_SUCCESS; + return CA_SUCCESS; fail_io: - if (feof(w->file)) - return CA_ERROR_CORRUPT; - else if (ferror(w->file)) - return CA_ERROR_SYSTEM; + if (feof(w->file)) + return CA_ERROR_CORRUPT; + else if (ferror(w->file)) + return CA_ERROR_SYSTEM; - ca_assert_not_reached(); + ca_assert_not_reached(); } int ca_wav_open(ca_wav **_w, FILE *f) { - uint32_t header[3], fmt_chunk[10]; - int ret; - ca_wav *w; - uint32_t file_size, fmt_size, data_size; - ca_bool_t extensible; - uint32_t format; + uint32_t header[3], fmt_chunk[10]; + int ret; + ca_wav *w; + uint32_t file_size, fmt_size, data_size; + ca_bool_t extensible; + uint32_t format; - ca_return_val_if_fail(_w, CA_ERROR_INVALID); - ca_return_val_if_fail(f, CA_ERROR_INVALID); + ca_return_val_if_fail(_w, CA_ERROR_INVALID); + ca_return_val_if_fail(f, CA_ERROR_INVALID); - if (!(w = ca_new(ca_wav, 1))) - return CA_ERROR_OOM; + if (!(w = ca_new(ca_wav, 1))) + return CA_ERROR_OOM; - w->file = f; + w->file = f; - if (fread(header, sizeof(uint32_t), CA_ELEMENTSOF(header), f) != CA_ELEMENTSOF(header)) - goto fail_io; + if (fread(header, sizeof(uint32_t), CA_ELEMENTSOF(header), f) != CA_ELEMENTSOF(header)) + goto fail_io; - if (CA_UINT32_FROM_LE(header[0]) != 0x46464952U || - CA_UINT32_FROM_LE(header[2]) != 0x45564157U) { - ret = CA_ERROR_CORRUPT; - goto fail; - } + if (CA_UINT32_FROM_LE(header[0]) != 0x46464952U || + CA_UINT32_FROM_LE(header[2]) != 0x45564157U) { + ret = CA_ERROR_CORRUPT; + goto fail; + } - file_size = CA_UINT32_FROM_LE(header[1]); + file_size = CA_UINT32_FROM_LE(header[1]); - if (file_size <= 0 || file_size >= FILE_SIZE_MAX) { - ret = CA_ERROR_TOOBIG; - goto fail; - } + if (file_size <= 0 || file_size >= FILE_SIZE_MAX) { + ret = CA_ERROR_TOOBIG; + goto fail; + } - /* Skip to the fmt chunk */ - if ((ret = skip_to_chunk(w, CHUNK_ID_FMT, &fmt_size)) < 0) - goto fail; + /* Skip to the fmt chunk */ + if ((ret = skip_to_chunk(w, CHUNK_ID_FMT, &fmt_size)) < 0) + goto fail; - switch (fmt_size) { + switch (fmt_size) { case 14: /* WAVEFORMAT */ case 16: case 18: /* WAVEFORMATEX */ - extensible = FALSE; - break; + extensible = FALSE; + break; case 40: /* WAVEFORMATEXTENSIBLE */ - extensible = TRUE; - break; + extensible = TRUE; + break; default: - ret = CA_ERROR_NOTSUPPORTED; - goto fail; - } - - if (fread(fmt_chunk, 1, fmt_size, f) != fmt_size) - goto fail_io; - - /* PCM? or WAVEX? */ - format = (CA_UINT32_FROM_LE(fmt_chunk[0]) & 0xFFFF); - if ((!extensible && format != 0x0001) || - (extensible && format != 0xFFFE)) { - ret = CA_ERROR_NOTSUPPORTED; - goto fail; - } - - if (extensible) { - if (memcmp(fmt_chunk + 6, pcm_guid, 16) != 0) { - ret = CA_ERROR_NOTSUPPORTED; - goto fail; + ret = CA_ERROR_NOTSUPPORTED; + goto fail; + } + + if (fread(fmt_chunk, 1, fmt_size, f) != fmt_size) + goto fail_io; + + /* PCM? or WAVEX? */ + format = (CA_UINT32_FROM_LE(fmt_chunk[0]) & 0xFFFF); + if ((!extensible && format != 0x0001) || + (extensible && format != 0xFFFE)) { + ret = CA_ERROR_NOTSUPPORTED; + goto fail; } - w->channel_mask = CA_UINT32_FROM_LE(fmt_chunk[5]); - } else - w->channel_mask = 0; + if (extensible) { + if (memcmp(fmt_chunk + 6, pcm_guid, 16) != 0) { + ret = CA_ERROR_NOTSUPPORTED; + goto fail; + } + + w->channel_mask = CA_UINT32_FROM_LE(fmt_chunk[5]); + } else + w->channel_mask = 0; - w->nchannels = CA_UINT32_FROM_LE(fmt_chunk[0]) >> 16; - w->rate = CA_UINT32_FROM_LE(fmt_chunk[1]); - w->depth = CA_UINT32_FROM_LE(fmt_chunk[3]) >> 16; + w->nchannels = CA_UINT32_FROM_LE(fmt_chunk[0]) >> 16; + w->rate = CA_UINT32_FROM_LE(fmt_chunk[1]); + w->depth = CA_UINT32_FROM_LE(fmt_chunk[3]) >> 16; - if (w->nchannels <= 0 || w->rate <= 0) { - ret = CA_ERROR_CORRUPT; - goto fail; - } + if (w->nchannels <= 0 || w->rate <= 0) { + ret = CA_ERROR_CORRUPT; + goto fail; + } - if (w->depth != 16 && w->depth != 8) { - ret = CA_ERROR_NOTSUPPORTED; - goto fail; - } + if (w->depth != 16 && w->depth != 8) { + ret = CA_ERROR_NOTSUPPORTED; + goto fail; + } - /* Skip to the data chunk */ - if ((ret = skip_to_chunk(w, CHUNK_ID_DATA, &data_size)) < 0) - goto fail; - w->data_size = (off_t) data_size; + /* Skip to the data chunk */ + if ((ret = skip_to_chunk(w, CHUNK_ID_DATA, &data_size)) < 0) + goto fail; + w->data_size = (off_t) data_size; - if ((w->data_size % (w->depth/8)) != 0) { - ret = CA_ERROR_CORRUPT; - goto fail; - } + if ((w->data_size % (w->depth/8)) != 0) { + ret = CA_ERROR_CORRUPT; + goto fail; + } - *_w = w; + *_w = w; - return CA_SUCCESS; + return CA_SUCCESS; fail_io: - if (feof(f)) - ret = CA_ERROR_CORRUPT; - else if (ferror(f)) - ret = CA_ERROR_SYSTEM; - else - ca_assert_not_reached(); + if (feof(f)) + ret = CA_ERROR_CORRUPT; + else if (ferror(f)) + ret = CA_ERROR_SYSTEM; + else + ca_assert_not_reached(); fail: - ca_free(w); + ca_free(w); - return ret; + return ret; } void ca_wav_close(ca_wav *w) { - ca_assert(w); + ca_assert(w); - fclose(w->file); - ca_free(w); + fclose(w->file); + ca_free(w); } unsigned ca_wav_get_nchannels(ca_wav *w) { - ca_assert(w); + ca_assert(w); - return w->nchannels; + return w->nchannels; } unsigned ca_wav_get_rate(ca_wav *w) { - ca_assert(w); + ca_assert(w); - return w->rate; + return w->rate; } const ca_channel_position_t* ca_wav_get_channel_map(ca_wav *w) { - unsigned c; - ca_channel_position_t *p; + unsigned c; + ca_channel_position_t *p; - ca_assert(w); + ca_assert(w); - if (!w->channel_mask) - return NULL; + if (!w->channel_mask) + return NULL; - p = w->channel_map; + p = w->channel_map; - for (c = 0; c < _BIT_MAX; c++) - if ((w->channel_mask & (1 << c))) - *(p++) = channel_table[c]; + for (c = 0; c < _BIT_MAX; c++) + if ((w->channel_mask & (1 << c))) + *(p++) = channel_table[c]; - ca_assert(p <= w->channel_map + _BIT_MAX); + ca_assert(p <= w->channel_map + _BIT_MAX); - if (p != w->channel_map + w->nchannels) - return NULL; + if (p != w->channel_map + w->nchannels) + return NULL; - return w->channel_map; + return w->channel_map; } ca_sample_type_t ca_wav_get_sample_type(ca_wav *w) { - ca_assert(w); + ca_assert(w); - return w->depth == 16 ? + return w->depth == 16 ? #ifdef WORDS_BIGENDIAN - CA_SAMPLE_S16RE + CA_SAMPLE_S16RE #else - CA_SAMPLE_S16NE + CA_SAMPLE_S16NE #endif - : CA_SAMPLE_U8; + : CA_SAMPLE_U8; } int ca_wav_read_s16le(ca_wav *w, int16_t *d, size_t *n) { - off_t remaining; + off_t remaining; - ca_return_val_if_fail(w, CA_ERROR_INVALID); - ca_return_val_if_fail(w->depth == 16, CA_ERROR_INVALID); - ca_return_val_if_fail(d, CA_ERROR_INVALID); - ca_return_val_if_fail(n, CA_ERROR_INVALID); - ca_return_val_if_fail(*n > 0, CA_ERROR_INVALID); + ca_return_val_if_fail(w, CA_ERROR_INVALID); + ca_return_val_if_fail(w->depth == 16, CA_ERROR_INVALID); + ca_return_val_if_fail(d, CA_ERROR_INVALID); + ca_return_val_if_fail(n, CA_ERROR_INVALID); + ca_return_val_if_fail(*n > 0, CA_ERROR_INVALID); - remaining = w->data_size / (off_t) sizeof(int16_t); + remaining = w->data_size / (off_t) sizeof(int16_t); - if ((off_t) *n > remaining) - *n = (size_t) remaining; + if ((off_t) *n > remaining) + *n = (size_t) remaining; - if (*n > 0) { - *n = fread(d, sizeof(int16_t), *n, w->file); + if (*n > 0) { + *n = fread(d, sizeof(int16_t), *n, w->file); - if (*n <= 0 && ferror(w->file)) - return CA_ERROR_SYSTEM; + if (*n <= 0 && ferror(w->file)) + return CA_ERROR_SYSTEM; - ca_assert(w->data_size >= (off_t) *n * (off_t) sizeof(int16_t)); - w->data_size -= (off_t) *n * (off_t) sizeof(int16_t); - } + ca_assert(w->data_size >= (off_t) *n * (off_t) sizeof(int16_t)); + w->data_size -= (off_t) *n * (off_t) sizeof(int16_t); + } - return CA_SUCCESS; + return CA_SUCCESS; } int ca_wav_read_u8(ca_wav *w, uint8_t *d, size_t *n) { - off_t remaining; + off_t remaining; - ca_return_val_if_fail(w, CA_ERROR_INVALID); - ca_return_val_if_fail(w->depth == 8, CA_ERROR_INVALID); - ca_return_val_if_fail(d, CA_ERROR_INVALID); - ca_return_val_if_fail(n, CA_ERROR_INVALID); - ca_return_val_if_fail(*n > 0, CA_ERROR_INVALID); + ca_return_val_if_fail(w, CA_ERROR_INVALID); + ca_return_val_if_fail(w->depth == 8, CA_ERROR_INVALID); + ca_return_val_if_fail(d, CA_ERROR_INVALID); + ca_return_val_if_fail(n, CA_ERROR_INVALID); + ca_return_val_if_fail(*n > 0, CA_ERROR_INVALID); - remaining = w->data_size / (off_t) sizeof(uint8_t); + remaining = w->data_size / (off_t) sizeof(uint8_t); - if ((off_t) *n > remaining) - *n = (size_t) remaining; + if ((off_t) *n > remaining) + *n = (size_t) remaining; - if (*n > 0) { - *n = fread(d, sizeof(uint8_t), *n, w->file); + if (*n > 0) { + *n = fread(d, sizeof(uint8_t), *n, w->file); - if (*n <= 0 && ferror(w->file)) - return CA_ERROR_SYSTEM; + if (*n <= 0 && ferror(w->file)) + return CA_ERROR_SYSTEM; - ca_assert(w->data_size >= (off_t) *n * (off_t) sizeof(uint8_t)); - w->data_size -= (off_t) *n * (off_t) sizeof(uint8_t); - } + ca_assert(w->data_size >= (off_t) *n * (off_t) sizeof(uint8_t)); + w->data_size -= (off_t) *n * (off_t) sizeof(uint8_t); + } - return CA_SUCCESS; + return CA_SUCCESS; } off_t ca_wav_get_size(ca_wav *v) { - ca_return_val_if_fail(v, (off_t) -1); + ca_return_val_if_fail(v, (off_t) -1); - return v->data_size; + return v->data_size; } |