53 #define OFFSET(x) offsetof(ConcatContext, x) 54 #define A AV_OPT_FLAG_AUDIO_PARAM 55 #define F AV_OPT_FLAG_FILTERING_PARAM 56 #define V AV_OPT_FLAG_VIDEO_PARAM 61 {
"v",
"specify the number of video streams",
64 {
"a",
"specify the number of audio streams",
67 {
"unsafe",
"enable unsafe mode",
78 unsigned type, nb_str, idx0 = 0, idx,
str, seg;
83 for (type = 0; type <
TYPE_ALL; type++) {
85 for (str = 0; str < nb_str; str++) {
125 unsigned in_no = out_no, seg;
130 outlink->
w = inlink->
w;
131 outlink->
h = inlink->
h;
141 "Video inputs have different frame rates, output will be VFR\n");
152 if (outlink->
w != inlink->
w ||
153 outlink->
h != inlink->
h ||
158 "(size %dx%d, SAR %d:%d) do not match the corresponding " 159 "output link %s parameters (%dx%d, SAR %d:%d)\n",
180 struct concat_in *
in = &cat->
in[in_no];
191 else if (in->nb_frames >= 2)
193 in->pts =
av_rescale(in->pts, in->nb_frames, in->nb_frames - 1);
221 cat->
in[in_no].
eof = 1;
234 pts = cat->
in[i++].
pts;
235 for (; i < imax; i++)
246 int64_t base_pts = cat->
in[in_no].
pts + cat->
delta_ts - seg_delta;
247 int64_t nb_samples, sent = 0;
248 int frame_nb_samples,
ret;
254 if (cat->
in[in_no].
pts < INT64_MIN + seg_delta)
256 if (seg_delta < cat->
in[in_no].
pts)
260 frame_nb_samples =
FFMAX(9600, rate_tb.
den / 5);
262 frame_nb_samples =
FFMIN(frame_nb_samples, nb_samples);
272 sent += frame_nb_samples;
273 nb_samples -= frame_nb_samples;
282 unsigned str, str_max;
295 for (; str < str_max; str++) {
313 for (type = 0; type <
TYPE_ALL; type++) {
329 for (type = 0; type <
TYPE_ALL; type++) {
376 if (!cat->
in[j].
eof) {
438 char *res,
int res_len,
int flags)
442 if (!strcmp(cmd,
"next")) {
int ff_inlink_consume_frame(AVFilterLink *link, AVFrame **rframe)
Take a frame from the link's FIFO and update the link's stats.
static AVFrame * get_audio_buffer(AVFilterLink *inlink, int nb_samples)
static int flush_segment(AVFilterContext *ctx)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static int send_silence(AVFilterContext *ctx, unsigned in_no, unsigned out_no, int64_t seg_delta)
This structure describes decoded (raw) audio or video data.
static av_cold int init(AVFilterContext *ctx)
unsigned nb_streams[TYPE_ALL]
number of out streams of each type
Main libavfilter public API header.
int h
agreed upon image height
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
enum AVMediaType type
AVFilterPad type.
#define FF_OUTLINK_IDX(link)
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
AVFilterFormatsConfig outcfg
Lists of supported formats / etc.
static void ff_outlink_set_status(AVFilterLink *link, int status, int64_t pts)
Set the status field of a link from the source filter.
void ff_inlink_request_frame(AVFilterLink *link)
Mark that a frame is wanted on the link.
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
static av_cold void uninit(AVFilterContext *ctx)
const char * name
Pad name.
AVFilterLink ** inputs
array of pointers to input links
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
AVFilterPad * output_pads
array of output pads
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
static AVFrame * get_video_buffer(AVFilterLink *inlink, int w, int h)
static int push_frame(AVFilterContext *ctx, unsigned in_no, AVFrame *buf)
#define AV_LOG_VERBOSE
Detailed information.
#define AVFILTER_FLAG_DYNAMIC_OUTPUTS
The number of the filter outputs is not determined just by AVFilter.outputs.
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
the definition of that something depends on the semantic of the filter The callback must examine the status of the filter s links and proceed accordingly The status of output links is stored in the status_in and status_out fields and tested by the ff_outlink_frame_wanted() function.If this function returns true
A filter pad used for either input or output.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
A link between two filters.
int ff_inlink_acknowledge_status(AVFilterLink *link, int *rstatus, int64_t *rpts)
Test and acknowledge the change of status on the link.
static int activate(AVFilterContext *ctx)
AVFilterPad * input_pads
array of input pads
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int av_samples_set_silence(uint8_t **audio_data, int offset, int nb_samples, int nb_channels, enum AVSampleFormat sample_fmt)
Fill an audio buffer with silence.
AVRational frame_rate
Frame rate of the stream on the link, or 1/0 if unknown or variable; if left to 0/0, will be automatically copied from the first input of the source filter if it exists.
int sample_rate
samples per second
AVFrame * ff_get_audio_buffer(AVFilterLink *link, int nb_samples)
Request an audio samples buffer with a specific set of permissions.
unsigned nb_outputs
number of output pads
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
void * priv
private data for use by the filter
AVRational time_base
Define the time base used by the PTS of the frames/samples which will pass through this link...
simple assert() macros that are a bit more flexible than ISO C assert().
int w
agreed upon image width
char * av_asprintf(const char *fmt,...)
int64_t delta_ts
timestamp to add to produce output timestamps
audio channel layout utility functions
unsigned nb_inputs
number of input pads
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
static void close_input(AVFilterContext *ctx, unsigned in_no)
static void find_next_delta_ts(AVFilterContext *ctx, int64_t *seg_delta)
static const AVClass concat_class
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
AVFilterContext * src
source filter
static const AVFilterPad outputs[]
int format
agreed upon media format
A list of supported channel layouts.
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
static AVRational av_make_q(int num, int den)
Create an AVRational.
unsigned cur_idx
index of the first input of current segment
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Describe the class of an AVClass context structure.
int ff_outlink_get_status(AVFilterLink *link)
Get the status on an output link.
Rational number (pair of numerator and denominator).
they must not be accessed directly The fifo field contains the frames that are queued in the input for processing by the filter The status_in and status_out fields contains the queued status(EOF or error) of the link
unsigned nb_in_active
number of active inputs in current segment
void ff_inlink_set_status(AVFilterLink *link, int status)
Set the status on an input link.
const char * name
Filter name.
AVRational sample_aspect_ratio
agreed upon sample aspect ratio
AVFilterLink ** outputs
array of pointers to output links
enum MovChannelLayoutTag * layouts
#define flags(name, subs,...)
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
#define FF_INLINK_IDX(link)
Find the index of a link.
static int query_formats(AVFilterContext *ctx)
void ff_filter_set_ready(AVFilterContext *filter, unsigned priority)
Mark a filter ready and schedule it for activation.
int channels
Number of channels.
AVFilterFormatsConfig incfg
Lists of supported formats / etc.
static int config_output(AVFilterLink *outlink)
AVFilterContext * dst
dest filter
struct ConcatContext::concat_in * in
AVFILTER_DEFINE_CLASS(concat)
static const AVOption concat_options[]
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
uint8_t ** extended_data
pointers to the data planes/channels.
static int ff_insert_outpad(AVFilterContext *f, unsigned index, AVFilterPad *p)
Insert a new output pad for the filter.
int nb_samples
number of audio samples (per channel) described by this frame
static int ff_insert_inpad(AVFilterContext *f, unsigned index, AVFilterPad *p)
Insert a new input pad for the filter.