49 #define RF64_AUTO (-1) 53 #define PEAK_BUFFER_SIZE 1024 96 len = strlen(tag->
value);
97 len =
FFMIN(len, maxlen);
107 uint64_t time_reference = 0;
110 bwf_write_bext_string(s,
"description", 256);
111 bwf_write_bext_string(s,
"originator", 32);
112 bwf_write_bext_string(s,
"originator_reference", 32);
113 bwf_write_bext_string(s,
"origination_date", 10);
114 bwf_write_bext_string(s,
"origination_time", 8);
117 time_reference = strtoll(tmp_tag->
value,
NULL, 10);
122 unsigned char umidpart_str[17] = {0};
125 size_t len = strlen(tmp_tag->
value+2);
127 for (i = 0; i < len/16; i++) {
128 memcpy(umidpart_str, tmp_tag->
value + 2 + (i*16), 16);
129 umidpart = strtoll(umidpart_str,
NULL, 16);
164 codec ? codec->
name :
"NONE");
172 "Writing 16 bit peak for 8 bit audio does not make sense\n");
188 peak_free_buffers(s);
201 for (c = 0; c < par->
channels; c++) {
261 memset(timestamp, 0,
sizeof(timestamp));
266 now_secs = now0 / 1000000;
267 if (strftime(timestamp,
sizeof(timestamp),
"%Y:%m:%d:%H:%M:%S:",
localtime_r(&now_secs, &tmpbuf))) {
268 av_strlcatf(timestamp,
sizeof(timestamp),
"%03d", (
int)((now0 / 1000) % 1000));
331 desc ? desc->
name :
"unknown");
345 bwf_write_bext_chunk(s);
349 if ((ret = peak_init_writer(s)) < 0)
412 int64_t file_size, data_size;
413 int64_t number_of_samples = 0;
426 ret = peak_write_chunk(s);
432 data_size = file_size - wav->
data;
435 }
else if (file_size - 8 <= UINT32_MAX) {
437 avio_wl32(pb, (uint32_t)(file_size - 8));
443 "Filesize %"PRId64
" invalid for wav, output file will be broken\n",
454 if (rf64 || (wav->
rf64 ==
RF64_AUTO && number_of_samples > UINT32_MAX)) {
489 peak_free_buffers(s);
494 #define OFFSET(x) offsetof(WAVMuxContext, x) 495 #define ENC AV_OPT_FLAG_ENCODING_PARAM 501 {
"only",
"Write only peak chunk, omit wav data.", 0,
AV_OPT_TYPE_CONST, { .i64 =
PEAK_ONLY }, 0, 0,
ENC,
"peak" },
512 static const AVClass wav_muxer_class = {
522 .mime_type =
"audio/x-wav",
532 .priv_class = &wav_muxer_class,
572 codec ? codec->
name :
"NONE");
596 end_guid(pb, wav->
data);
603 int64_t number_of_samples;
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
void avio_wb64(AVIOContext *s, uint64_t val)
void avio_wl16(AVIOContext *s, unsigned int val)
const uint8_t ff_w64_guid_wave[16]
void ff_end_tag(AVIOContext *pb, int64_t start)
int64_t ff_start_tag(AVIOContext *pb, const char *tag)
void * av_realloc(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory.
int ff_put_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int flags)
Write WAVEFORMAT header structure.
const uint8_t ff_w64_guid_fact[16]
#define LIBAVUTIL_VERSION_INT
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
const char * av_default_item_name(void *ptr)
Return the context name.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
This struct describes the properties of an encoded stream.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
void avio_wl32(AVIOContext *s, unsigned int val)
static av_cold int end(AVCodecContext *avctx)
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
AVStream ** streams
A list of all streams in the file.
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
int flags
Flags modifying the (de)muxer behaviour.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
void avio_wl64(AVIOContext *s, uint64_t val)
#define i(width, name, range_min, range_max)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
AVDictionary * metadata
Metadata that applies to the whole file.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option keep it simple and lowercase description are in without and describe what they for example set the foo of the bar offset is the offset of the field in your local see the OFFSET() macro
const char * name
Name of the codec implementation.
const AVCodecTag ff_codec_wav_tags[]
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
void ffio_fill(AVIOContext *s, int b, int count)
static int write_trailer(AVFormatContext *s1)
const uint8_t ff_w64_guid_data[16]
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
const uint8_t ff_w64_guid_riff[16]
int avio_put_str(AVIOContext *s, const char *str)
Write a NULL-terminated string.
int64_t av_gettime(void)
Get the current time in microseconds.
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
#define AV_LOG_INFO
Standard information.
AVIOContext * pb
I/O context.
AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
void ff_riff_write_info(AVFormatContext *s)
Write all recognized RIFF tags from s->metadata.
Describe the class of an AVClass context structure.
void avio_flush(AVIOContext *s)
Force flushing of buffered data.
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
const char * name
Name of the codec described by this descriptor.
This struct describes the properties of a single codec described by an AVCodecID. ...
#define flags(name, subs,...)
const uint8_t ff_w64_guid_fmt[16]
int sample_rate
Audio only.
const OptionDef options[]
common internal and external API header
uint32_t peak_outbuf_size
uint32_t peak_outbuf_bytes
void * priv_data
Format private data.
static void write_header(FFV1Context *f)
AVCodecParameters * codecpar
Codec parameters associated with this stream.
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
This structure stores compressed data.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
#define AV_NOPTS_VALUE
Undefined timestamp value.
void * av_mallocz_array(size_t nmemb, size_t size)