--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+//
+// container-voc.c - a parser/builder for a container of Creative Voice File.
+//
+// Copyright (c) 2018 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+//
+// Licensed under the terms of the GNU General Public License, version 2.
+
+#include "container.h"
+#include "misc.h"
+
+// Not portable to all of UNIX platforms.
+#include <endian.h>
+
+// References:
+// - http://sox.sourceforge.net/
+
+#define VOC_MAGIC "Creative Voice File\x1a"
+#define VOC_VERSION_1_10 0x010a
+#define VOC_VERSION_1_20 0x0114
+
+enum block_type {
+ BLOCK_TYPE_TERMINATOR = 0x00,
+ BLOCK_TYPE_V110_DATA = 0x01,
+ BLOCK_TYPE_CONTINUOUS_DATA = 0x02,
+ BLOCK_TYPE_SILENCE = 0x03,
+ BLOCK_TYPE_MARKER = 0x04,
+ BLOCK_TYPE_STRING = 0x05,
+ BLOCK_TYPE_REPEAT_START = 0x06,
+ BLOCK_TYPE_REPEAT_END = 0x07,
+ BLOCK_TYPE_EXTENDED_V110_FORMAT = 0x08,
+ BLOCK_TYPE_V120_DATA = 0x09,
+};
+
+enum code_id {
+ // Version 1.10.
+ CODE_ID_GENERIC_MBLA_U8 = 0x00,
+ CODE_ID_CREATIVE_ADPCM_8BIT_TO_4BIT_LE = 0x01,
+ CODE_ID_CREATIVE_ADPCM_8BIT_TO_3BIT_LE = 0x02,
+ CODE_ID_CREATIVE_ADPCM_8BIT_TO_2BIT_LE = 0x03,
+ // Version 1.20.
+ CODE_ID_GENERIC_MBLA_S16_LE = 0x04,
+ CODE_ID_CCIT_A_LAW_LE = 0x06,
+ CODE_ID_CCIT_MU_LAW_LE = 0x07,
+ CODE_ID_CREATIVE_ADPCM_16BIT_TO_4BIT_LE = 0x2000,
+};
+
+struct format_map {
+ unsigned int minimal_version;
+ enum code_id code_id;
+ snd_pcm_format_t format;
+};
+
+static const struct format_map format_maps[] = {
+ {VOC_VERSION_1_10, CODE_ID_GENERIC_MBLA_U8, SND_PCM_FORMAT_U8},
+ {VOC_VERSION_1_20, CODE_ID_GENERIC_MBLA_S16_LE, SND_PCM_FORMAT_S16_LE},
+ {VOC_VERSION_1_20, CODE_ID_CCIT_A_LAW_LE, SND_PCM_FORMAT_A_LAW},
+ {VOC_VERSION_1_20, CODE_ID_CCIT_MU_LAW_LE, SND_PCM_FORMAT_MU_LAW},
+ // The other formats are not supported by ALSA.
+};
+
+struct container_header {
+ uint8_t magic[20];
+ uint16_t hdr_size;
+ uint16_t version;
+ uint16_t version_compr;
+};
+
+// A format for data blocks except for terminator type.
+struct block_header {
+ uint8_t type;
+ uint8_t size[3];
+
+ uint8_t data[0];
+};
+
+// Data block for terminator type has an exceptional format.
+struct block_terminator {
+ uint8_t type;
+};
+
+struct time_const {
+ unsigned int frames_per_second;
+ uint16_t code;
+};
+
+static const struct time_const v110_time_consts[] = {
+ {5512, 74},
+ {8000, 130},
+ {11025, 165},
+ {16000, 193},
+ {22050, 210},
+ {32000, 224},
+ {44100, 233},
+ {48000, 235},
+ {64000, 240},
+ // Time constant for the upper sampling rate is not identical.
+};
+
+static const struct time_const ex_v110_time_consts[] = {
+ {5512, 19092},
+ {8000, 33536},
+ {11025, 42317},
+ {16000, 49536},
+ {22050, 53927},
+ {32000, 57536},
+ {44100, 59732},
+ {48000, 60203},
+ {64000, 61536},
+ {88200, 62634},
+ {96000, 62870},
+ {176400, 64085},
+ {192000, 64203},
+ // This support up to 192.0 kHz. The rest is for cases with 2ch.
+ {352800, 64811},
+ {384000, 64870},
+};
+
+// v1.10 format:
+// - monaural.
+// - frames_per_second = 1,000,000 / (256 - time_const)
+struct block_v110_data {
+ uint8_t type;
+ uint8_t size[3]; // Equals to (2 + the size of frames).
+
+ uint8_t time_const;
+ uint8_t code_id;
+ uint8_t frames[0]; // Aligned to little-endian.
+};
+
+struct block_continuous_data {
+ uint8_t type;
+ uint8_t size[3]; // Equals to the size of frames.
+
+ uint8_t frames[0]; // Aligned to little-endian.
+};
+
+// v1.10 format:
+// - monaural.
+// - frames_per_second = 1,000,000 / (256 - time_const).
+struct block_silence {
+ uint8_t type;
+ uint8_t size[3]; // Equals to 3.
+
+ uint16_t frame_count;
+ uint8_t time_const;
+};
+
+struct block_marker {
+ uint8_t type;
+ uint8_t size[3]; // Equals to 2.
+
+ uint16_t mark;
+};
+
+struct block_string {
+ uint8_t type;
+ uint8_t size[3]; // Equals to the length of string with 0x00.
+
+ uint8_t chars[0];
+};
+
+struct block_repeat_start {
+ uint8_t type;
+ uint8_t size[3]; // Equals to 2.
+
+ uint16_t count;
+};
+
+struct block_repeat_end {
+ uint8_t type;
+ uint8_t size[3]; // Equals to 0.
+};
+
+// Extended v1.10 format:
+// - manaural/stereo.
+// - frames_per_second =
+// 256,000,000 / (samples_per_frame * (65536 - time_const)).
+// - Appear just before v110_data block.
+struct block_extended_v110_format {
+ uint8_t type;
+ uint8_t size[3]; // Equals to 4.
+
+ uint16_t time_const;
+ uint8_t code_id;
+ uint8_t ch_mode; // 0 is monaural, 1 is stereo.
+};
+
+// v1.20 format:
+// - monaural/stereo.
+// - 8/16 bits_per_sample.
+// - time_const is not used.
+// - code_id is extended.
+struct block_v120_format {
+ uint8_t type;
+ uint8_t size[3]; // Equals to (12 + ).
+
+ uint32_t frames_per_second;
+ uint8_t bits_per_sample;
+ uint8_t samples_per_frame;
+ uint16_t code_id;
+ uint8_t reserved[4];
+
+ uint8_t frames[0]; // Aligned to little-endian.
+};
+
+// Aligned to little endian order but 24 bits field.
+static uint32_t parse_block_data_size(uint8_t fields[3])
+{
+ return (fields[2] << 16) | (fields[1] << 8) | fields[0];
+}
+
+static void build_block_data_size(uint8_t fields[3], unsigned int size)
+{
+ fields[0] = (size & 0x0000ff);
+ fields[1] = (size & 0x00ff00) >> 8;
+ fields[2] = (size & 0xff0000) >> 16;
+}
+
+static int build_time_constant(unsigned int frames_per_second,
+ unsigned int samples_per_frame, uint16_t *code,
+ bool extended)
+{
+ int i;
+
+ // 16 bits are available for this purpose.
+ if (extended) {
+ if (samples_per_frame > 2)
+ return -EINVAL;
+ frames_per_second *= samples_per_frame;
+
+ for (i = 0; i < ARRAY_SIZE(ex_v110_time_consts); ++i) {
+ if (ex_v110_time_consts[i].frames_per_second ==
+ frames_per_second)
+ break;
+ }
+ if (i < ARRAY_SIZE(ex_v110_time_consts) ||
+ frames_per_second <= 192000) {
+ *code = ex_v110_time_consts[i].code;
+ } else {
+ *code = 65536 - 256000000 / frames_per_second;
+ }
+ } else {
+ if (samples_per_frame != 1)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(v110_time_consts); ++i) {
+ if (v110_time_consts[i].frames_per_second ==
+ frames_per_second)
+ break;
+ }
+ // Should be within 8 bit.
+ if (i < ARRAY_SIZE(v110_time_consts))
+ *code = (uint8_t)v110_time_consts[i].code;
+ else
+ *code = 256 - 1000000 / frames_per_second;
+ }
+
+ return 0;
+}
+
+static unsigned int parse_time_constant(uint16_t code,
+ unsigned int samples_per_frame,
+ unsigned int *frames_per_second,
+ bool extended)
+{
+ int i;
+
+ if (extended) {
+ if (samples_per_frame > 2)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(ex_v110_time_consts); ++i) {
+ if (ex_v110_time_consts[i].code == code ||
+ ex_v110_time_consts[i].code - 1 == code)
+ break;
+ }
+ if (i < ARRAY_SIZE(ex_v110_time_consts)) {
+ *frames_per_second =
+ ex_v110_time_consts[i].frames_per_second /
+ samples_per_frame;
+ } else {
+ *frames_per_second = 256000000 / samples_per_frame /
+ (65536 - code);
+ }
+ } else {
+ if (samples_per_frame != 1)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(v110_time_consts); ++i) {
+ if (v110_time_consts[i].code == code ||
+ v110_time_consts[i].code - 1 == code)
+ break;
+ }
+ if (i < ARRAY_SIZE(v110_time_consts)) {
+ *frames_per_second =
+ v110_time_consts[i].frames_per_second;
+ } else {
+ *frames_per_second = 1000000 / (256 - code);
+ }
+ }
+
+ return 0;
+}
+
+struct parser_state {
+ unsigned int version;
+ bool extended;
+
+ unsigned int frames_per_second;
+ unsigned int samples_per_frame;
+ unsigned int bytes_per_sample;
+ enum code_id code_id;
+ uint32_t byte_count;
+};
+
+static int parse_container_header(struct parser_state *state,
+ struct container_header *header)
+{
+ uint16_t hdr_size;
+ uint16_t version;
+ uint16_t version_compr;
+
+ hdr_size = le16toh(header->hdr_size);
+ version = le16toh(header->version);
+ version_compr = le16toh(header->version_compr);
+
+ if (memcmp(header->magic, VOC_MAGIC, sizeof(header->magic)))
+ return -EIO;
+
+ if (hdr_size != sizeof(*header))
+ return -EIO;
+
+ if (version_compr != 0x1234 + ~version)
+ return -EIO;
+
+ if (version != VOC_VERSION_1_10 && version != VOC_VERSION_1_20)
+ return -EIO;
+
+ state->version = version;
+
+ return 0;
+}
+
+static bool check_code_id(uint8_t code_id, unsigned int version)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(format_maps); ++i) {
+ if (code_id != format_maps[i].code_id)
+ continue;
+ if (version >= format_maps[i].minimal_version)
+ return true;
+ }
+
+ return false;
+}
+
+static int parse_v120_format_block(struct parser_state *state,
+ struct block_v120_format *block)
+{
+ state->frames_per_second = le32toh(block->frames_per_second);
+ state->bytes_per_sample = block->bits_per_sample / 8;
+ state->samples_per_frame = block->samples_per_frame;
+ state->code_id = le16toh(block->code_id);
+ state->byte_count = parse_block_data_size(block->size) - 12;
+
+ if (!check_code_id(state->code_id, VOC_VERSION_1_20))
+ return -EIO;
+
+ return 0;
+}
+
+static int parse_extended_v110_format(struct parser_state *state,
+ struct block_extended_v110_format *block)
+{
+ unsigned int time_const;
+ unsigned int frames_per_second;
+ int err;
+
+ state->code_id = block->code_id;
+ if (!check_code_id(state->code_id, VOC_VERSION_1_10))
+ return -EIO;
+
+ if (block->ch_mode == 0)
+ state->samples_per_frame = 1;
+ else if (block->ch_mode == 1)
+ state->samples_per_frame = 2;
+ else
+ return -EIO;
+
+ time_const = le16toh(block->time_const);
+ err = parse_time_constant(time_const, state->samples_per_frame,
+ &frames_per_second, true);
+ if (err < 0)
+ return err;
+ state->frames_per_second = frames_per_second;
+
+ state->extended = true;
+
+ return 0;
+}
+
+static int parse_v110_data(struct parser_state *state,
+ struct block_v110_data *block)
+{
+ unsigned int time_const;
+ unsigned int frames_per_second;
+ int err;
+
+ if (!state->extended) {
+ state->code_id = block->code_id;
+ if (!check_code_id(state->code_id, VOC_VERSION_1_10))
+ return -EIO;
+
+ time_const = block->time_const;
+ err = parse_time_constant(time_const, 1, &frames_per_second,
+ false);
+ if (err < 0)
+ return err;
+ state->frames_per_second = frames_per_second;
+ state->samples_per_frame = 1;
+ }
+
+ state->bytes_per_sample = 1;
+ state->byte_count = parse_block_data_size(block->size) - 2;
+
+ return 0;
+}
+
+static int detect_container_version(struct container_context *cntr)
+{
+ struct parser_state *state = cntr->private_data;
+ struct container_header header = {0};
+ int err;
+
+ // 4 bytes were alread read to detect container type.
+ memcpy(&header.magic, cntr->magic, sizeof(cntr->magic));
+ err = container_recursive_read(cntr,
+ (char *)&header + sizeof(cntr->magic),
+ sizeof(header) - sizeof(cntr->magic));
+ if (err < 0)
+ return err;
+ if (cntr->eof)
+ return 0;
+
+ return parse_container_header(state, &header);
+}
+
+static int allocate_for_block_cache(struct container_context *cntr,
+ struct block_header *header, void **buf)
+{
+ uint32_t block_size;
+ char *cache;
+ int err;
+
+ if (header->type == BLOCK_TYPE_V110_DATA)
+ block_size = sizeof(struct block_v110_data);
+ else if (header->type == BLOCK_TYPE_CONTINUOUS_DATA)
+ block_size = sizeof(struct block_continuous_data);
+ else if (header->type == BLOCK_TYPE_EXTENDED_V110_FORMAT)
+ block_size = sizeof(struct block_extended_v110_format);
+ else if (header->type == BLOCK_TYPE_V120_DATA)
+ block_size = sizeof(struct block_v120_format);
+ else
+ block_size = parse_block_data_size(header->size);
+
+ cache = malloc(block_size);
+ if (cache == NULL)
+ return -ENOMEM;
+ memset(cache, 0, block_size);
+
+ memcpy(cache, header, sizeof(*header));
+ err = container_recursive_read(cntr, cache + sizeof(*header),
+ block_size - sizeof(*header));
+ if (err < 0) {
+ free(cache);
+ return err;
+ }
+ if (cntr->eof) {
+ free(cache);
+ return 0;
+ }
+
+ *buf = cache;
+
+ return 0;
+}
+
+static int cache_data_block(struct container_context *cntr,
+ struct block_header *header, void **buf)
+{
+ int err;
+
+ // Check type of this block.
+ err = container_recursive_read(cntr, &header->type,
+ sizeof(header->type));
+ if (err < 0)
+ return err;
+ if (cntr->eof)
+ return 0;
+
+ if (header->type > BLOCK_TYPE_V120_DATA)
+ return -EIO;
+ if (header->type == BLOCK_TYPE_TERMINATOR)
+ return 0;
+
+ // Check size of this block. If the block includes a batch of data,
+ err = container_recursive_read(cntr, &header->size,
+ sizeof(header->size));
+ if (err < 0)
+ return err;
+ if (cntr->eof)
+ return 0;
+
+ return allocate_for_block_cache(cntr, header, buf);
+}
+
+static int detect_format_block(struct container_context *cntr)
+{
+ struct parser_state *state = cntr->private_data;
+ struct block_header header;
+ void *buf = NULL;
+ int err;
+
+again:
+ err = cache_data_block(cntr, &header, &buf);
+ if (err < 0)
+ return err;
+
+ if (header.type == BLOCK_TYPE_EXTENDED_V110_FORMAT) {
+ err = parse_extended_v110_format(state, buf);
+ } else if (header.type == BLOCK_TYPE_V120_DATA) {
+ err = parse_v120_format_block(state, buf);
+ } else if (header.type == BLOCK_TYPE_V110_DATA) {
+ err = parse_v110_data(state, buf);
+ } else {
+ free(buf);
+ goto again;
+ }
+
+ free(buf);
+
+ if (err < 0)
+ return err;
+
+ // Expect to detect block_v110_data.
+ if (header.type == BLOCK_TYPE_EXTENDED_V110_FORMAT)
+ goto again;
+
+ return 0;
+}
+
+static int voc_parser_pre_process(struct container_context *cntr,
+ snd_pcm_format_t *format,
+ unsigned int *samples_per_frame,
+ unsigned int *frames_per_second,
+ uint64_t *byte_count)
+{
+ struct parser_state *state = cntr->private_data;
+ int i;
+ int err;
+
+ err = detect_container_version(cntr);
+ if (err < 0)
+ return err;
+
+ err = detect_format_block(cntr);
+ if (err < 0)
+ return err;
+
+ for (i = 0; i < ARRAY_SIZE(format_maps); ++i) {
+ if (format_maps[i].code_id == state->code_id)
+ break;
+ }
+ if (i == ARRAY_SIZE(format_maps))
+ return -EINVAL;
+
+ *format = format_maps[i].format;
+ *samples_per_frame = state->samples_per_frame;
+ *frames_per_second = state->frames_per_second;
+
+ // This program handles PCM frames in this data block only.
+ *byte_count = state->byte_count;
+
+ return 0;
+}
+
+struct builder_state {
+ unsigned int version;
+ bool extended;
+ enum code_id code_id;
+
+ unsigned int samples_per_frame;
+ unsigned int bytes_per_sample;
+};
+
+static int write_container_header(struct container_context *cntr,
+ struct container_header *header)
+{
+ struct builder_state *state = cntr->private_data;
+
+ // Process container header.
+ memcpy(header->magic, VOC_MAGIC, sizeof(header->magic));
+ header->hdr_size = htole16(sizeof(*header));
+ header->version = htole16(state->version);
+ header->version_compr = htole16(0x1234 + ~state->version);
+
+ return container_recursive_write(cntr, header, sizeof(*header));
+}
+
+static int write_v120_format_block(struct container_context *cntr,
+ struct block_v120_format *block,
+ unsigned int frames_per_second,
+ uint64_t byte_count)
+{
+ struct builder_state *state = cntr->private_data;
+
+ block->type = BLOCK_TYPE_V120_DATA;
+ build_block_data_size(block->size, 12 + byte_count);
+
+ block->frames_per_second = htole32(frames_per_second);
+ block->bits_per_sample = htole16(state->bytes_per_sample * 8);
+ block->samples_per_frame = htole16(state->samples_per_frame);
+ block->code_id = htole16(state->code_id);
+
+ return container_recursive_write(cntr, block, sizeof(*block));
+}
+
+static int write_extended_v110_format_block(struct container_context *cntr,
+ unsigned int frames_per_second,
+ struct block_extended_v110_format *block)
+{
+ struct builder_state *state = cntr->private_data;
+ uint16_t time_const;
+ int err;
+
+ block->type = BLOCK_TYPE_EXTENDED_V110_FORMAT;
+ build_block_data_size(block->size, 4);
+
+ // 16 bits are available for this purpose.
+ err = build_time_constant(frames_per_second, state->samples_per_frame,
+ &time_const, true);
+ if (err < 0)
+ return err;
+ block->time_const = htole16(time_const);
+ block->code_id = htole16(state->code_id);
+
+ if (state->samples_per_frame == 1)
+ block->ch_mode = 0;
+ else
+ block->ch_mode = 1;
+
+ return container_recursive_write(cntr, block, sizeof(*block));
+}
+
+static int write_v110_format_block(struct container_context *cntr,
+ struct block_v110_data *block,
+ unsigned int frames_per_second,
+ uint64_t byte_count)
+{
+ struct builder_state *state = cntr->private_data;
+ uint16_t time_const;
+ int err;
+
+ block->type = BLOCK_TYPE_V110_DATA;
+ build_block_data_size(block->size, 2 + byte_count);
+
+ // These fields were obsoleted by extension.
+ err = build_time_constant(frames_per_second, 1, &time_const, false);
+ if (err < 0)
+ return err;
+ block->time_const = (uint8_t)time_const;
+ block->code_id = state->code_id;
+ return container_recursive_write(cntr, block, sizeof(*block));
+}
+
+static int write_data_blocks(struct container_context *cntr,
+ unsigned int frames_per_second,
+ uint64_t byte_count)
+{
+ union {
+ struct container_header header;
+ struct block_v110_data v110_data;
+ struct block_extended_v110_format extended_v110_format;
+ struct block_v120_format v120_format;
+ } buf = {0};
+ struct builder_state *state = cntr->private_data;
+ int err;
+
+ err = write_container_header(cntr, &buf.header);
+ if (err < 0)
+ return err;
+
+ if (state->version == VOC_VERSION_1_20) {
+ err = write_v120_format_block(cntr, &buf.v120_format,
+ frames_per_second, byte_count);
+ } else {
+ if (state->extended) {
+ err = write_extended_v110_format_block(cntr,
+ frames_per_second,
+ &buf.extended_v110_format);
+ if (err < 0)
+ return err;
+ }
+ err = write_v110_format_block(cntr, &buf.v110_data,
+ frames_per_second, byte_count);
+ }
+
+ return err;
+}
+
+static int voc_builder_pre_process(struct container_context *cntr,
+ snd_pcm_format_t *format,
+ unsigned int *samples_per_frame,
+ unsigned int *frames_per_second,
+ uint64_t *byte_count)
+{
+ struct builder_state *state = cntr->private_data;
+ int i;
+
+ // Validate parameters.
+ for (i = 0; i < ARRAY_SIZE(format_maps); ++i) {
+ if (format_maps[i].format == *format)
+ break;
+ }
+ if (i == ARRAY_SIZE(format_maps))
+ return -EINVAL;
+ state->code_id = format_maps[i].code_id;
+
+ // Decide container version.
+ if (*samples_per_frame > 2)
+ state->version = VOC_VERSION_1_20;
+ else
+ state->version = format_maps[i].minimal_version;
+ if (state->version == VOC_VERSION_1_10) {
+ if (*samples_per_frame == 2) {
+ for (i = 0;
+ i < ARRAY_SIZE(ex_v110_time_consts); ++i) {
+ if (ex_v110_time_consts[i].frames_per_second ==
+ *frames_per_second)
+ break;
+ }
+ if (i == ARRAY_SIZE(ex_v110_time_consts))
+ state->version = VOC_VERSION_1_20;
+ else
+ state->extended = true;
+ } else {
+ for (i = 0; i < ARRAY_SIZE(v110_time_consts); ++i) {
+ if (v110_time_consts[i].frames_per_second ==
+ *frames_per_second)
+ break;
+ }
+ if (i == ARRAY_SIZE(v110_time_consts))
+ state->version = VOC_VERSION_1_20;
+ }
+ }
+
+ state->bytes_per_sample = snd_pcm_format_physical_width(*format) / 8;
+ state->samples_per_frame = *samples_per_frame;
+
+ return write_data_blocks(cntr, *frames_per_second, *byte_count);
+}
+
+static int write_block_terminator(struct container_context *cntr)
+{
+ struct block_terminator block = {0};
+
+ block.type = BLOCK_TYPE_TERMINATOR;
+ return container_recursive_write(cntr, &block, sizeof(block));
+}
+
+static int write_data_size(struct container_context *cntr, uint64_t byte_count)
+{
+ struct builder_state *state = cntr->private_data;
+ off64_t offset;
+ uint8_t size_field[3];
+ int err;
+
+ offset = sizeof(struct container_header) + sizeof(uint8_t);
+ if (state->version == VOC_VERSION_1_10 && state->extended)
+ offset += sizeof(struct block_extended_v110_format);
+ err = container_seek_offset(cntr, offset);
+ if (err < 0)
+ return err;
+
+ if (state->version == VOC_VERSION_1_10)
+ offset = 2;
+ else
+ offset = 12;
+
+ if (byte_count > cntr->max_size - offset)
+ byte_count = cntr->max_size;
+ else
+ byte_count += offset;
+ build_block_data_size(size_field, byte_count);
+
+ return container_recursive_write(cntr, &size_field, sizeof(size_field));
+}
+
+static int voc_builder_post_process(struct container_context *cntr,
+ uint64_t handled_byte_count)
+{
+ int err;
+
+ err = write_block_terminator(cntr);
+ if (err < 0)
+ return err;
+
+ return write_data_size(cntr, handled_byte_count);
+}
+
+const struct container_parser container_parser_voc = {
+ .format = CONTAINER_FORMAT_VOC,
+ .magic = VOC_MAGIC,
+ .max_size = 0xffffff - // = UINT24_MAX.
+ sizeof(struct block_terminator),
+ .ops = {
+ .pre_process = voc_parser_pre_process,
+ },
+ .private_size = sizeof(struct parser_state),
+};
+
+const struct container_builder container_builder_voc = {
+ .format = CONTAINER_FORMAT_VOC,
+ .max_size = 0xffffff - // = UINT24_MAX.
+ sizeof(struct block_terminator),
+ .ops = {
+ .pre_process = voc_builder_pre_process,
+ .post_process = voc_builder_post_process,
+ },
+ .private_size = sizeof(struct builder_state),
+};
git://git.alsa-project.org / alsa-utils.git / commitdiff