47 #define OFFSET(x) offsetof(AMergeContext, x)
48 #define FLAGS AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
51 {
"inputs",
"specify the number of inputs",
OFFSET(nb_inputs),
63 for (
unsigned i = 0;
i <
ctx->nb_inputs;
i++)
81 int i, ret, overlap = 0, nb_ch = 0;
83 for (
i = 0;
i <
s->nb_inputs;
i++) {
84 if (!
ctx->inputs[
i]->incfg.channel_layouts ||
85 !
ctx->inputs[
i]->incfg.channel_layouts->nb_channel_layouts) {
87 "No channel layout for input %d\n",
i + 1);
90 inlayout[
i] =
ctx->inputs[
i]->incfg.channel_layouts->channel_layouts[0];
91 if (
ctx->inputs[
i]->incfg.channel_layouts->nb_channel_layouts > 1) {
101 if (outlayout & inlayout[
i])
103 outlayout |= inlayout[
i];
105 nb_ch +=
s->in[
i].nb_ch;
113 "Input channel layouts overlap: "
114 "output layout will be determined by the number of distinct input channels\n");
115 for (
i = 0;
i < nb_ch;
i++)
118 if (!outlayout && nb_ch)
119 outlayout = 0xFFFFFFFFFFFFFFFFULL >> (64 - nb_ch);
122 int c, out_ch_number = 0;
125 for (
i = 1;
i <
s->nb_inputs;
i++)
126 route[
i] = route[
i - 1] +
s->in[
i - 1].nb_ch;
128 for (
i = 0;
i <
s->nb_inputs;
i++)
129 if ((inlayout[
i] >>
c) & 1)
130 *(route[
i]++) = out_ch_number++;
135 for (
i = 0;
i <
s->nb_inputs;
i++) {
158 for (
i = 1;
i <
s->nb_inputs;
i++) {
159 if (
ctx->inputs[
i]->sample_rate !=
ctx->inputs[0]->sample_rate) {
161 "Inputs must have the same sample rate "
162 "%d for in%d vs %d\n",
163 ctx->inputs[
i]->sample_rate,
i,
ctx->inputs[0]->sample_rate);
172 for (
i = 0;
i <
s->nb_inputs;
i++) {
206 for (
i = 0;
i < nb_inputs;
i++)
207 nb_ch +=
in[
i].nb_ch;
210 for (
i = 0;
i < nb_inputs;
i++) {
211 for (
c = 0;
c <
in[
i].nb_ch;
c++) {
212 memcpy((*outs) +
bps * *(route_cur++), ins[
i],
bps);
216 *outs += nb_ch *
bps;
223 for (
i = 0;
i < nb_inputs;
i++)
235 for (
i = 0;
i <
ctx->nb_inputs;
i++) {
241 ins[
i] = inbuf[
i]->
data[0];
250 outs = outbuf->
data[0];
251 outbuf->
pts = inbuf[0]->
pts;
262 copy_samples(
s->nb_inputs,
s->in,
s->route, ins, &outs, nb_samples, 1);
265 copy_samples(
s->nb_inputs,
s->in,
s->route, ins, &outs, nb_samples, 2);
268 copy_samples(
s->nb_inputs,
s->in,
s->route, ins, &outs, nb_samples, 4);
271 copy_samples(
s->nb_inputs,
s->in,
s->route, ins, &outs, nb_samples,
s->bps);
291 for (
i = 1;
i <
ctx->nb_inputs && nb_samples > 0;
i++) {
301 for (
i = 0;
i <
ctx->nb_inputs;
i++) {
325 for (
i = 0;
i <
s->nb_inputs;
i++) {
353 "a single multi-channel stream."),
361 .priv_class = &amerge_class,
static const AVFilterPad inputs[]
static const AVFilterPad outputs[]
static int try_push_frame(AVFilterContext *ctx, int nb_samples)
static int query_formats(AVFilterContext *ctx)
static const AVOption amerge_options[]
static int activate(AVFilterContext *ctx)
static av_cold int init(AVFilterContext *ctx)
static av_cold void uninit(AVFilterContext *ctx)
static int config_output(AVFilterLink *outlink)
static const AVFilterPad amerge_outputs[]
static void free_frames(int nb_inputs, AVFrame **input_frames)
AVFILTER_DEFINE_CLASS(amerge)
static void copy_samples(int nb_inputs, struct amerge_input in[], int *route, uint8_t *ins[], uint8_t **outs, int ns, int bps)
Copy samples from several input streams to one output stream.
AVFrame * ff_get_audio_buffer(AVFilterLink *link, int nb_samples)
Request an audio samples buffer with a specific set of permissions.
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
int ff_inlink_acknowledge_status(AVFilterLink *link, int *rstatus, int64_t *rpts)
Test and acknowledge the change of status on the link.
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
int ff_inlink_consume_samples(AVFilterLink *link, unsigned min, unsigned max, AVFrame **rframe)
Take samples from the link's FIFO and update the link's stats.
int ff_inlink_queued_samples(AVFilterLink *link)
void ff_inlink_request_frame(AVFilterLink *link)
Mark that a frame is wanted on the link.
Main libavfilter public API header.
char * av_asprintf(const char *fmt,...)
void av_bprintf(AVBPrint *buf, const char *fmt,...)
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
#define AV_BPRINT_SIZE_AUTOMATIC
#define flags(name, subs,...)
#define ns(max_value, name, subs,...)
audio channel layout utility functions
static void ff_outlink_set_status(AVFilterLink *link, int status, int64_t pts)
Set the status field of a link from the source filter.
#define FF_FILTER_FORWARD_STATUS_BACK_ALL(outlink, filter)
Forward the status on an output link to all input links.
static int ff_outlink_frame_wanted(AVFilterLink *link)
Test if a frame is wanted on an output link.
void av_bprint_channel_layout(struct AVBPrint *bp, int nb_channels, uint64_t channel_layout)
Append a description of a channel layout to a bprint buffer.
void av_get_channel_layout_string(char *buf, int buf_size, int nb_channels, uint64_t channel_layout)
Return a description of a channel layout.
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
int64_t av_get_default_channel_layout(int nb_channels)
Return default channel layout for a given number of channels.
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define AV_LOG_WARNING
Something somehow does not look correct.
#define AV_LOG_VERBOSE
Detailed information.
#define AV_LOG_INFO
Standard information.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt)
Return number of bytes per sample.
AVSampleFormat
Audio sample formats.
@ AV_SAMPLE_FMT_S32
signed 32 bits
@ AV_SAMPLE_FMT_DBL
double
@ AV_SAMPLE_FMT_S16
signed 16 bits
static int ff_insert_inpad(AVFilterContext *f, unsigned index, AVFilterPad *p)
Insert a new input pad for the filter.
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
enum MovChannelLayoutTag * layouts
int nb_ch
number of channels for the input
struct AMergeContext::amerge_input * in
int route[SWR_CH_MAX]
channels routing, see copy_samples
Describe the class of an AVClass context structure.
A list of supported channel layouts.
A link between two filters.
int channels
Number of channels.
AVFilterContext * src
source filter
AVRational time_base
Define the time base used by the PTS of the frames/samples which will pass through this link.
int sample_rate
samples per second
uint64_t channel_layout
channel layout of current buffer (see libavutil/channel_layout.h)
A filter pad used for either input or output.
const char * name
Pad name.
const char * name
Filter name.
This structure describes decoded (raw) audio or video data.
int nb_samples
number of audio samples (per channel) described by this frame
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int channels
number of audio channels, only used for audio.
uint64_t channel_layout
Channel layout of the audio data.