Go to the documentation of this file.
36 #define NUT_MAX_STREAMS 256
39 int64_t *pos_arg, int64_t pos_limit);
47 while (
len > maxlen) {
90 int calculate_checksum, uint64_t startcode)
119 if ((
state >> 56) !=
'N')
144 if (startcode ==
code)
146 else if (startcode == 0)
165 #define GET_V(dst, check) \
167 tmp = ffio_read_varlen(bc); \
169 av_log(s, AV_LOG_ERROR, "Error " #dst " is (%"PRId64")\n", tmp); \
170 ret = AVERROR_INVALIDDATA; \
197 unsigned int stream_count;
198 int i, j, count,
ret;
199 int tmp_stream, tmp_mul, tmp_pts, tmp_size, tmp_res, tmp_head_idx;
242 for (
i = 0;
i < 256;) {
263 count = tmp_mul - tmp_size;
269 while (tmp_fields-- > 8) {
278 if (count <= 0 || count > 256 - (
i <=
'N') -
i) {
283 if (tmp_stream >= stream_count) {
285 tmp_stream, stream_count);
290 for (j = 0; j < count; j++,
i++) {
314 if (rem < nut->header_len[
i]) {
316 "invalid elision header %d : %d > %d\n",
349 for (
i = 0;
i < stream_count;
i++)
367 int class, stream_id,
ret;
375 stc = &nut->
stream[stream_id];
376 st =
s->streams[stream_id];
380 class = ffio_read_varlen(bc);
418 "Unknown codec tag '0x%04x' for stream number %d\n",
419 (
unsigned int)
tmp, stream_id);
455 "stream header %d checksum mismatch\n", stream_id);
482 if (stream_id ==
i || stream_id == -1)
490 uint64_t
tmp, chapter_start, chapter_len;
491 unsigned int stream_id_plus1, count;
492 int chapter_id,
i,
ret = 0;
494 char name[256], str_value[1024], type_str[256];
496 int *event_flags =
NULL;
500 int metadata_flag = 0;
506 chapter_id =
get_s(bc);
511 if (chapter_id && !stream_id_plus1) {
516 start, start + chapter_len,
NULL);
522 }
else if (stream_id_plus1) {
523 st =
s->streams[stream_id_plus1 - 1];
528 metadata = &
s->metadata;
529 event_flags = &
s->event_flags;
533 for (
i = 0;
i < count;
i++) {
544 ret =
get_str(bc, str_value,
sizeof(str_value));
545 }
else if (
value == -2) {
546 ret =
get_str(bc, type_str,
sizeof(type_str));
552 ret =
get_str(bc, str_value,
sizeof(str_value));
553 }
else if (
value == -3) {
556 }
else if (
value == -4) {
559 }
else if (
value < -4) {
571 if (stream_id_plus1 >
s->nb_streams) {
573 "invalid stream id %d for info packet\n",
578 if (!strcmp(
type,
"UTF-8")) {
579 if (chapter_id == 0 && !strcmp(
name,
"Disposition")) {
584 if (stream_id_plus1 && !strcmp(
name,
"r_frame_rate")) {
595 *event_flags |= metadata_flag;
670 int i, j, syncpoint_count;
672 int64_t *syncpoints =
NULL;
674 int8_t *has_keyframe =
NULL;
699 GET_V(syncpoint_count, tmp < INT_MAX / 8 && tmp > 0);
702 if (!syncpoints || !has_keyframe) {
706 for (
i = 0;
i < syncpoint_count;
i++) {
708 if (syncpoints[
i] <= 0)
711 syncpoints[
i] += syncpoints[
i - 1];
714 for (
i = 0;
i <
s->nb_streams;
i++) {
716 for (j = 0; j < syncpoint_count;) {
724 if (n +
x >= syncpoint_count + 1) {
729 has_keyframe[n++] =
flag;
730 has_keyframe[n++] = !
flag;
737 if (n >= syncpoint_count + 1) {
741 has_keyframe[n++] =
x & 1;
745 if (has_keyframe[0]) {
750 for (; j < n && j < syncpoint_count; j++) {
751 if (has_keyframe[j]) {
798 int initialized_stream_count;
814 for (initialized_stream_count = 0; initialized_stream_count <
s->nb_streams;) {
821 initialized_stream_count++;
830 if (startcode == 0) {
843 s->internal->data_offset =
pos - 8;
868 int64_t channel_layout = 0;
874 for (
i=0;
i<count;
i++) {
887 ret =
get_str(bc, str_value,
sizeof(str_value));
893 }
else if (
value == -2) {
895 int64_t v64, value_len;
897 ret =
get_str(bc, type_str,
sizeof(type_str));
903 if (value_len < 0 || value_len >= maxpos -
avio_tell(bc))
905 if (!strcmp(
name,
"Palette")) {
907 }
else if (!strcmp(
name,
"Extradata")) {
909 }
else if (sscanf(
name,
"CodecSpecificSide%"SCNd64
"", &v64) == 1) {
915 }
else if (!strcmp(
name,
"ChannelLayout") && value_len == 8) {
926 }
else if (
value == -3) {
928 }
else if (
value == -4) {
930 }
else if (
value < -4) {
933 if (!strcmp(
name,
"SkipStart")) {
935 }
else if (!strcmp(
name,
"SkipEnd")) {
937 }
else if (!strcmp(
name,
"Channels")) {
939 }
else if (!strcmp(
name,
"SampleRate")) {
941 }
else if (!strcmp(
name,
"Width")) {
943 }
else if (!strcmp(
name,
"Height")) {
955 bytestream_put_le32(&dst,
962 bytestream_put_le32(&dst,
channels);
964 bytestream_put_le64(&dst, channel_layout);
968 bytestream_put_le32(&dst,
width);
969 bytestream_put_le32(&dst,
height);
973 if (skip_start || skip_end) {
988 uint8_t *header_idx,
int frame_code)
993 int size,
flags, size_mul, pts_delta,
i, reserved_count,
ret;
999 "Last frame must have been damaged %"PRId64
" > %"PRId64
" + %d\n",
1019 stc = &nut->
stream[*stream_id];
1037 for (
i = 0;
i < reserved_count;
i++) {
1074 int size, stream_id, discard,
ret;
1075 int64_t
pts, last_IP_pts;
1083 stc = &nut->
stream[stream_id];
1088 discard =
s->streams[stream_id]->discard;
1089 last_IP_pts =
s->streams[stream_id]->last_IP_pts;
1092 last_IP_pts >
pts) ||
1102 if (nut->
header[header_idx])
1142 int i, frame_code = 0,
ret, skip;
1143 int64_t ts, back_ptr;
1156 if (frame_code ==
'N') {
1158 for (
i = 1;
i < 8;
i++)
1197 int64_t *pos_arg, int64_t pos_limit)
1201 int64_t
pos,
pts, back_ptr;
1203 stream_index, *pos_arg, pos_limit);
1217 if (stream_index == -2)
1227 AVStream *st =
s->streams[stream_index];
1230 Syncpoint *
sp, *next_node[2] = { &nopts_sp, &nopts_sp };
1231 int64_t
pos, pos2, ts;
1249 (
void **) next_node);
1251 next_node[0]->
pos, next_node[1]->
pos, next_node[0]->ts,
1254 next_node[1]->pos, next_node[1]->pos,
1255 next_node[0]->ts, next_node[1]->ts,
1262 next_node[1] = &nopts_sp;
1264 (
void **) next_node);
1266 next_node[1]->pos, next_node[1]->pos,
1267 next_node[0]->back_ptr, next_node[1]->back_ptr,
1278 pos2 =
sp->back_ptr - 15;
1285 if (pos2 >
pos || pos2 + 15 <
pos)
1287 for (
i = 0;
i <
s->nb_streams;
i++)
1305 .extensions =
"nut",
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
static int nut_read_close(AVFormatContext *s)
enum AVCodecID av_codec_get_id(const struct AVCodecTag *const *tags, unsigned int tag)
Get the AVCodecID for the given codec tag tag.
#define AV_LOG_WARNING
Something somehow does not look correct.
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
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 name
const AVCodecTag ff_nut_audio_extra_tags[]
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
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
static int decode_frame(NUTContext *nut, AVPacket *pkt, int frame_code)
enum AVMediaType codec_type
General type of the encoded data.
unsigned int time_base_count
@ AV_PKT_DATA_PARAM_CHANGE
An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
unsigned int max_distance
#define AVERROR_EOF
End of file.
static int nut_read_packet(AVFormatContext *s, AVPacket *pkt)
const AVCodecTag ff_nut_data_tags[]
#define SYNCPOINT_STARTCODE
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
static av_cold int end(AVCodecContext *avctx)
AVStream ** streams
A list of all streams in the file.
const Dispositions ff_nut_dispositions[]
int64_t last_syncpoint_pos
@ AV_PKT_DATA_PALETTE
An AV_PKT_DATA_PALETTE side data packet contains exactly AVPALETTE_SIZE bytes worth of palette.
@ AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE
#define AV_LOG_VERBOSE
Detailed information.
const AVCodecTag ff_codec_wav_tags[]
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
static uint64_t find_any_startcode(AVIOContext *bc, int64_t pos)
void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val)
int buf_size
Size of buf except extra allocated bytes.
static int nut_probe(const AVProbeData *p)
static int read_sm_data(AVFormatContext *s, AVIOContext *bc, AVPacket *pkt, int is_meta, int64_t maxpos)
@ AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT
int64_t avio_size(AVIOContext *s)
Get the filesize.
static uint64_t get_fourcc(AVIOContext *bc)
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
unsigned long ffio_get_checksum(AVIOContext *s)
int64_t av_gcd(int64_t a, int64_t b)
Compute the greatest common divisor of two integer operands.
int ff_nut_sp_pos_cmp(const void *a, const void *b)
void ff_nut_free_sp(NUTContext *nut)
static int64_t get_s(AVIOContext *bc)
void av_shrink_packet(AVPacket *pkt, int size)
Reduce packet size, correctly zeroing padding.
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add an index entry into a sorted list.
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the pass ‘ target exec’ to ‘configure’ or set the TARGET_EXEC Make variable Submitting the results to the FFmpeg result aggregation server ****************************************************************To submit your results to the server you should run fate through the shell script ‘tests fate sh’ from the FFmpeg sources This script needs to be invoked with a configuration file as its first argument tests fate sh path to fate_config A configuration file template with comments describing the individual configuration variables can be found at ‘doc fate_config sh template’ Create a configuration that suits your based on the configuration template The ‘slot’ configuration variable can be any string that is not yet but it is suggested that you name it adhering to the following pattern ‘ARCH OS COMPILER COMPILER VERSION’ The configuration file itself will be sourced in a shell therefore all shell features may be used This enables you to setup the environment as you need it for your build For your first test runs the ‘fate_recv’ variable should be empty or commented out This will run everything as normal except that it will omit the submission of the results to the server The following files should be present in $workdir as specified in the configuration it may help to try out the ‘ssh’ command with one or more ‘ v’ options You should get detailed output concerning your SSH configuration and the authentication process The only thing left is to automate the execution of the fate sh script and the synchronisation of the samples directory Uploading new samples to the fate suite *****************************************If you need a sample uploaded send a mail to samples request This is for developers who have an account on the fate suite server If you upload new please make sure they are as small as space on each network bandwidth and so on benefit from smaller test cases Also keep in mind older checkouts use existing sample that means in practice generally do not remove or overwrite files as it likely would break older checkouts or releases Also all needed samples for a commit should be ideally before the push If you need an account for frequently uploading samples or you wish to help others by doing that send a mail to ffmpeg devel rsync vauL Duo x
static av_cold int read_close(AVFormatContext *ctx)
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
static int skip_reserved(AVIOContext *bc, int64_t pos)
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 type
const uint8_t * header[128]
unsigned int avio_rl16(AVIOContext *s)
unsigned int avio_rb32(AVIOContext *s)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
@ AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS
const AVMetadataConv ff_nut_metadata_conv[]
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
static int get_str(AVIOContext *bc, char *string, unsigned int maxlen)
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
static double av_q2d(AVRational a)
Convert an AVRational to a double.
static int64_t find_startcode(AVIOContext *bc, uint64_t code, int64_t pos)
Find the given startcode.
int64_t timestamp
Timestamp in AVStream.time_base units, preferably the time from which on correctly decoded frames are...
#define av_assert0(cond)
assert() equivalent, that is always enabled.
static int64_t nut_read_timestamp(AVFormatContext *s, int stream_index, int64_t *pos_arg, int64_t pos_limit)
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
@ AVMEDIA_TYPE_DATA
Opaque data information usually continuous.
@ AVDISCARD_BIDIR
discard all bidirectional frames
uint8_t * av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int size)
Allocate new information of a packet.
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
#define GET_V(dst, check)
@ AVDISCARD_ALL
discard all
AVCodecParameters * codecpar
Codec parameters associated with this stream.
static int read_header(FFV1Context *f)
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
int ff_nut_sp_pts_cmp(const void *a, const void *b)
Rational number (pair of numerator and denominator).
uint64_t avio_rb64(AVIOContext *s)
This structure contains the data a format has to probe a file.
static int read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
const AVCodecTag ff_nut_video_tags[]
int sample_rate
Audio only.
int extradata_size
Size of the extradata content in bytes.
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
static int decode_main_header(NUTContext *nut)
const AVCodecTag ff_codec_movvideo_tags[]
unsigned int avio_rl32(AVIOContext *s)
@ AVDISCARD_NONKEY
discard all frames except keyframes
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
const AVCodecTag ff_nut_audio_tags[]
#define AV_NOPTS_VALUE
Undefined timestamp value.
int event_flags
Flags for the user to detect events happening on the stream.
void ffio_init_checksum(AVIOContext *s, unsigned long(*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len), unsigned long checksum)
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
int avio_r8(AVIOContext *s)
int flags
A combination of AV_PKT_FLAG values.
uint64_t ffio_read_varlen(AVIOContext *bc)
unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf, unsigned int len)
#define AV_LOG_INFO
Standard information.
int ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts)
struct AVTreeNode * syncpoints
#define i(width, name, range_min, range_max)
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some it can consider them to be part of the FIFO and delay acknowledging a status change accordingly Example code
int64_t ff_lsb2full(StreamContext *stream, int64_t lsb)
static int find_and_decode_index(NUTContext *nut)
#define AV_TIME_BASE
Internal time base represented as integer.
#define av_malloc_array(a, b)
static int get_packetheader(NUTContext *nut, AVIOContext *bc, int calculate_checksum, uint64_t startcode)
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 value
AVInputFormat ff_nut_demuxer
@ AV_PKT_DATA_SKIP_SAMPLES
Recommmends skipping the specified number of samples.
FrameCode frame_code[256]
static int decode_frame_header(NUTContext *nut, int64_t *pts, int *stream_id, uint8_t *header_idx, int frame_code)
int disposition
AV_DISPOSITION_* bit field.
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
static int decode_syncpoint(NUTContext *nut, int64_t *ts, int64_t *back_ptr)
static void set_disposition_bits(AVFormatContext *avf, char *value, int stream_id)
const AVCodecTag ff_codec_bmp_tags[]
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
const AVCodecTag *const ff_nut_codec_tags[]
@ AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
@ AV_PKT_DATA_NEW_EXTRADATA
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
static int nut_read_header(AVFormatContext *s)
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
AVRational r_frame_rate
Real base framerate of the stream.
int eof_reached
true if was unable to read due to error or eof
void * av_tree_find(const AVTreeNode *t, void *key, int(*cmp)(const void *key, const void *b), void *next[2])
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
@ AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL
Data found in BlockAdditional element of matroska container.
const AVCodecTag ff_nut_subtitle_tags[]
int video_delay
Video only.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
static int decode_stream_header(NUTContext *nut)
This structure stores compressed data.
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
int64_t pos
byte position in stream, -1 if unknown
uint64_t avio_rl64(AVIOContext *s)
#define flags(name, subs,...)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static int64_t find_duration(NUTContext *nut, int64_t filesize)
static int decode_info_header(NUTContext *nut)
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags)
Get the index for a specific timestamp.
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.