mirror of
https://github.com/alsa-project/alsa-utils
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96110793b3
This commit adds support for raw data without any headers/chunks/blocks. A parser of container cannot recognize format of sample without supplemental information. Additionally, it includes no magic bytes. A parser of container should process first several bytes as a part of PCM frames, instead of magic bytes. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// container-raw.c - a parser/builder for a container with raw data frame.
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//
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// Copyright (c) 2018 Takashi Sakamoto <o-takashi@sakamocchi.jp>
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//
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// Licensed under the terms of the GNU General Public License, version 2.
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#include "container.h"
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#include "misc.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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static int raw_builder_pre_process(struct container_context *cntr,
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snd_pcm_format_t *sample_format,
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unsigned int *samples_per_frame,
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unsigned int *frames_per_second,
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uint64_t *byte_count)
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{
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*byte_count = UINT64_MAX;
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return 0;
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}
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static int raw_parser_pre_process(struct container_context *cntr,
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snd_pcm_format_t *sample_format,
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unsigned int *samples_per_frame,
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unsigned int *frames_per_second,
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uint64_t *byte_count)
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{
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struct stat buf = {0};
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int err;
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if (cntr->stdio) {
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*byte_count = UINT64_MAX;
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return 0;
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}
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err = fstat(cntr->fd, &buf);
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if (err < 0)
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return err;
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*byte_count = buf.st_size;
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if (*byte_count == 0)
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*byte_count = UINT64_MAX;
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return 0;
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}
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const struct container_parser container_parser_raw = {
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.format = CONTAINER_FORMAT_RAW,
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.max_size = UINT64_MAX,
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.ops = {
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.pre_process = raw_parser_pre_process,
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},
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};
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const struct container_builder container_builder_raw = {
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.format = CONTAINER_FORMAT_RAW,
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.max_size = UINT64_MAX,
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.ops = {
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.pre_process = raw_builder_pre_process,
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},
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};
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