45 #define MAX_AUDIO_FRAME_SIZE 192000
62 { 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff },
63 { 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff },
64 { 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff },
65 { 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff },
66 { 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff },
67 { 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff },
68 { 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff },
69 { 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff },
70 { 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff },
71 { 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff },
72 { 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff },
73 { 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff },
109 timecode |= 1<<23 | 1<<15 | 1<<7 | 1<<6;
113 if (
c->ast[
channel]->codecpar->sample_rate == 44100) {
115 }
else if (
c->ast[
channel]->codecpar->sample_rate == 32000)
120 c->sys->audio_min_samples[audio_type]);
125 (seq >=
c->sys->difseg_size/2);
147 c->sys->ltc_divisor * 4);
159 ((
tc.tm_mday / 10) << 4) |
162 ((
tc.tm_mon / 10) << 4) |
164 buf[4] = (((
tc.tm_year % 100) / 10) << 4) |
175 ((
tc.tm_sec / 10) << 4) |
178 ((
tc.tm_min / 10) << 4) |
181 ((
tc.tm_hour / 10) << 4) |
185 buf[1] = buf[2] = buf[3] = buf[4] = 0xff;
192 int i, j, d, of,
size;
194 frame_ptr +=
channel *
c->sys->difseg_size * 150 * 80;
195 for (
i = 0;
i <
c->sys->difseg_size;
i++) {
197 for (j = 0; j < 9; j++) {
199 for (d = 8; d < 80; d+=2) {
200 of =
c->sys->audio_shuffle[
i][j] + (d - 8)/2 *
c->sys->audio_stride;
207 frame_ptr += 16 * 80;
218 for (buf =
frame; buf <
frame +
c->sys->frame_size; buf += 150 * 80, seq++) {
220 for (j = 80; j < 80 * 3; j += 80) {
221 for (k = 6; k < 6 * 8; k += 8)
224 if (((
long)(buf-
frame)/(
c->sys->frame_size/(
c->sys->difseg_size*
c->sys->n_difchan))%
c->sys->difseg_size) > 5) {
233 for (j = 80*3 + 3; j < 80*6; j += 80) {
252 *
frame = &
c->frame_buf[0];
258 av_log(
s,
AV_LOG_ERROR,
"Can't process DV frame #%d. Insufficient audio data or severe sync problem.\n",
c->frames);
259 if (data_size !=
c->sys->frame_size) {
261 data_size,
c->sys->frame_size);
269 for (
i = 0;
i <
c->n_ast && st !=
c->ast[
i];
i++);
273 av_log(
s,
AV_LOG_ERROR,
"Can't process DV frame #%d. Insufficient video data or severe sync problem.\n",
c->frames);
287 if (
c->has_video == 1 &&
c->has_audio + 1 == 1 <<
c->n_ast) {
290 for (
i=0;
i <
c->n_ast;
i++) {
301 return c->sys->frame_size;
314 if (
s->nb_streams > 5)
318 for (
i=0;
i<
s->nb_streams;
i++) {
322 if (vst)
return NULL;
328 if (
c->n_ast > 1)
return NULL;
337 c->ast[
c->n_ast++] = st;
352 if ((
c->sys->time_base.den != 25 &&
c->sys->time_base.den != 50) ||
c->sys->time_base.num != 1) {
353 if (
c->ast[0] &&
c->ast[0]->codecpar->sample_rate != 48000)
355 if (
c->ast[1] &&
c->ast[1]->codecpar->sample_rate != 48000)
359 if (((
c->n_ast > 1) && (
c->sys->n_difchan < 2)) ||
360 ((
c->n_ast > 2) && (
c->sys->n_difchan < 4))) {
371 for (
i=0;
i <
c->n_ast;
i++) {
391 "Make sure that you supply exactly two streams:\n"
392 " video: 25fps or 29.97fps, audio: 2ch/48|44|32kHz/PCM\n"
393 " (50Mbps allows an optional second audio stream)\n");
400 for (
i = 0;
i <
s->nb_streams;
i++) {
435 for (
int i = 0;
i <
c->n_ast;
i++)
static int64_t fsize(FILE *f)
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert0(cond)
assert() equivalent, that is always enabled.
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
const AVDVProfile * av_dv_codec_profile2(int width, int height, enum AVPixelFormat pix_fmt, AVRational frame_rate)
Get a DV profile for the provided stream parameters.
channel
Use these values when setting the channel map with ebur128_set_channel().
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
static void write_header(FFV1Context *f)
a very simple circular buffer FIFO implementation
static uint8_t * av_fifo_peek2(const AVFifoBuffer *f, int offs)
Return a pointer to the data stored in a FIFO buffer at a certain offset.
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd)
Rescale a 64-bit integer with specified rounding.
@ AV_ROUND_DOWN
Round toward -infinity.
#define DV_MAX_FRAME_SIZE
largest possible DV frame, in bytes (1080i50)
#define DV_PROFILE_IS_HD(p)
void av_fifo_drain(AVFifoBuffer *f, int size)
Discard data from the FIFO.
void av_fifo_freep(AVFifoBuffer **f)
Free an AVFifoBuffer and reset pointer to NULL.
int av_fifo_size(const AVFifoBuffer *f)
Return the amount of data in bytes in the AVFifoBuffer, that is the amount of data you can read from ...
AVFifoBuffer * av_fifo_alloc_array(size_t nmemb, size_t size)
Initialize an AVFifoBuffer.
int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size, int(*func)(void *, void *, int))
Feed data from a user-supplied callback to an AVFifoBuffer.
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Describe the class of an AVClass context structure.
enum AVMediaType codec_type
General type of the encoded data.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int sample_rate
Audio only.
int audio_samples_dist[5]
This structure stores compressed data.
Rational number (pair of numerator and denominator).
AVCodecParameters * codecpar
Codec parameters associated with this stream.
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
AVFifoBuffer * audio_data[4]
uint8_t frame_buf[DV_MAX_FRAME_SIZE]
int av_timecode_init_from_string(AVTimecode *tc, AVRational rate, const char *str, void *log_ctx)
Parse timecode representation (hh:mm:ss[:;.
int av_timecode_init(AVTimecode *tc, AVRational rate, int flags, int frame_start, void *log_ctx)
Init a timecode struct with the passed parameters.
uint32_t av_timecode_get_smpte_from_framenum(const AVTimecode *tc, int framenum)
Convert frame number to SMPTE 12M binary representation.