Libav
Macros | Functions | Variables
avconv_filter.c File Reference
#include <stdint.h>
#include "avconv.h"
#include "libavfilter/avfilter.h"
#include "libavresample/avresample.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/pixfmt.h"
#include "libavutil/samplefmt.h"

Go to the source code of this file.

Macros

#define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name)
 
#define DESCRIBE_FILTER_LINK(f, inout, in)
 

Functions

 DEF_CHOOSE_FORMAT (enum AVPixelFormat, pix_fmt, pix_fmts, AV_PIX_FMT_NONE, GET_PIX_FMT_NAME) DEF_CHOOSE_FORMAT(enum AVSampleFormat
 
GET_SAMPLE_FMT_NAME DEF_CHOOSE_FORMAT (int, sample_rate, supported_samplerates, DEF_CHOOSE_FORMAT(0, GET_SAMPLE_RATE_NAME)
 
static void init_input_filter (FilterGraph *fg, AVFilterInOut *in)
 
static int insert_trim (int64_t start_time, int64_t duration, AVFilterContext **last_filter, int *pad_idx, const char *filter_name)
 
static int configure_output_video_filter (FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 
static int configure_output_audio_filter (FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 
int configure_output_filter (FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 
static int configure_input_video_filter (FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in)
 
static int configure_input_audio_filter (FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in)
 
static int configure_input_filter (FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in)
 
int configure_filtergraph (FilterGraph *fg)
 
int ist_in_filtergraph (FilterGraph *fg, InputStream *ist)
 

Variables

 sample_fmt
 
 sample_fmts
 
 AV_SAMPLE_FMT_NONE
 

Macro Definition Documentation

§ DEF_CHOOSE_FORMAT

#define DEF_CHOOSE_FORMAT (   type,
  var,
  supported_list,
  none,
  get_name 
)
Value:
static char *choose_ ## var ## s(OutputStream *ost) \
{ \
if (ost->enc_ctx->var != none) { \
get_name(ost->enc_ctx->var); \
return av_strdup(name); \
} else if (ost->enc && ost->enc->supported_list) { \
const type *p; \
AVIOContext *s = NULL; \
uint8_t *ret; \
int len; \
exit(1); \
for (p = ost->enc->supported_list; *p != none; p++) { \
get_name(*p); \
avio_printf(s, "%s|", name); \
} \
len = avio_close_dyn_buf(s, &ret); \
ret[len - 1] = 0; \
return ret; \
} else \
return NULL; \
}
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:966
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:954
const char * name
if(ac->has_optimized_func)
NULL
Definition: eval.c:55
char * av_strdup(const char *s)
Duplicate the string s.
Definition: mem.c:213
int len
for(j=16;j >0;--j)

Definition at line 39 of file avconv_filter.c.

§ DESCRIBE_FILTER_LINK

#define DESCRIBE_FILTER_LINK (   f,
  inout,
  in 
)
Value:
{ \
AVFilterContext *ctx = inout->filter_ctx; \
AVFilterPad *pads = in ? ctx->input_pads : ctx->output_pads; \
int nb_pads = in ? ctx->nb_inputs : ctx->nb_outputs; \
AVIOContext *pb; \
if (avio_open_dyn_buf(&pb) < 0) \
exit(1); \
avio_printf(pb, "%s", ctx->filter->name); \
if (nb_pads > 1) \
avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\
avio_w8(pb, 0); \
avio_close_dyn_buf(pb, &f->name); \
}
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:954
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_dlog(ac->avr, "%d samples - audio_convert: %s to %s (dithered)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
if(ac->has_optimized_func)
const char * avfilter_pad_get_name(const AVFilterPad *pads, int pad_idx)
Get the name of an AVFilterPad.
Definition: avfilter.c:718
int avio_printf(AVIOContext *s, const char *fmt,...) av_printf_format(2

Definition at line 392 of file avconv_filter.c.

Referenced by configure_input_filter(), and configure_output_filter().

Function Documentation

§ DEF_CHOOSE_FORMAT() [1/2]

DEF_CHOOSE_FORMAT ( enum  AVPixelFormat,
pix_fmt  ,
pix_fmts  ,
AV_PIX_FMT_NONE  ,
GET_PIX_FMT_NAME   
)

§ DEF_CHOOSE_FORMAT() [2/2]

GET_SAMPLE_FMT_NAME DEF_CHOOSE_FORMAT ( int  ,
sample_rate  ,
supported_samplerates  ,
DEF_CHOOSE_FORMAT(  0,
GET_SAMPLE_RATE_NAME   
)

Definition at line 71 of file avconv_filter.c.

§ init_input_filter()

static void init_input_filter ( FilterGraph fg,
AVFilterInOut in 
)
static

Definition at line 108 of file avconv_filter.c.

Referenced by configure_filtergraph().

§ insert_trim()

static int insert_trim ( int64_t  start_time,
int64_t  duration,
AVFilterContext **  last_filter,
int *  pad_idx,
const char *  filter_name 
)
static

§ configure_output_video_filter()

static int configure_output_video_filter ( FilterGraph fg,
OutputFilter ofilter,
AVFilterInOut out 
)
static

Definition at line 229 of file avconv_filter.c.

Referenced by configure_output_filter().

§ configure_output_audio_filter()

static int configure_output_audio_filter ( FilterGraph fg,
OutputFilter ofilter,
AVFilterInOut out 
)
static

Definition at line 318 of file avconv_filter.c.

Referenced by configure_output_filter().

§ configure_output_filter()

int configure_output_filter ( FilterGraph fg,
OutputFilter ofilter,
AVFilterInOut out 
)

Definition at line 409 of file avconv_filter.c.

Referenced by configure_filtergraph(), and init_output_filter().

§ configure_input_video_filter()

static int configure_input_video_filter ( FilterGraph fg,
InputFilter ifilter,
AVFilterInOut in 
)
static

Definition at line 421 of file avconv_filter.c.

Referenced by configure_input_filter().

§ configure_input_audio_filter()

static int configure_input_audio_filter ( FilterGraph fg,
InputFilter ifilter,
AVFilterInOut in 
)
static

Definition at line 478 of file avconv_filter.c.

Referenced by configure_input_filter().

§ configure_input_filter()

static int configure_input_filter ( FilterGraph fg,
InputFilter ifilter,
AVFilterInOut in 
)
static

Definition at line 566 of file avconv_filter.c.

Referenced by configure_filtergraph().

§ configure_filtergraph()

int configure_filtergraph ( FilterGraph fg)

§ ist_in_filtergraph()

int ist_in_filtergraph ( FilterGraph fg,
InputStream ist 
)

Definition at line 650 of file avconv_filter.c.

Referenced by decode_audio(), and decode_video().

Variable Documentation

§ sample_fmt

sample_fmt

§ sample_fmts

sample_fmts

§ AV_SAMPLE_FMT_NONE

AV_SAMPLE_FMT_NONE