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vf_il.c
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1 /*
2  * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
3  * Copyright (c) 2013 Paul B Mahol
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * (de)interleave fields filter
25  */
26 
27 #include "libavutil/opt.h"
28 #include "libavutil/imgutils.h"
29 #include "libavutil/pixdesc.h"
30 #include "avfilter.h"
31 #include "internal.h"
32 
33 enum FilterMode {
37 };
38 
39 typedef struct {
40  const AVClass *class;
41  int luma_mode, chroma_mode, alpha_mode; ///<FilterMode
42  int luma_swap, chroma_swap, alpha_swap;
43  int nb_planes;
44  int linesize[4], chroma_height;
45  int has_alpha;
46 } IlContext;
47 
48 #define OFFSET(x) offsetof(IlContext, x)
49 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
50 
51 static const AVOption il_options[] = {
52  {"luma_mode", "select luma mode", OFFSET(luma_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "luma_mode"},
53  {"l", "select luma mode", OFFSET(luma_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "luma_mode"},
54  {"none", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_NONE}, 0, 0, FLAGS, "luma_mode"},
55  {"interleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "luma_mode"},
56  {"i", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "luma_mode"},
57  {"deinterleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "luma_mode"},
58  {"d", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "luma_mode"},
59  {"chroma_mode", "select chroma mode", OFFSET(chroma_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "chroma_mode"},
60  {"c", "select chroma mode", OFFSET(chroma_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "chroma_mode"},
61  {"none", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_NONE}, 0, 0, FLAGS, "chroma_mode"},
62  {"interleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "chroma_mode"},
63  {"i", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "chroma_mode"},
64  {"deinterleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "chroma_mode"},
65  {"d", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "chroma_mode"},
66  {"alpha_mode", "select alpha mode", OFFSET(alpha_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "alpha_mode"},
67  {"a", "select alpha mode", OFFSET(alpha_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "alpha_mode"},
68  {"none", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_NONE}, 0, 0, FLAGS, "alpha_mode"},
69  {"interleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "alpha_mode"},
70  {"i", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "alpha_mode"},
71  {"deinterleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "alpha_mode"},
72  {"d", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "alpha_mode"},
73  {"luma_swap", "swap luma fields", OFFSET(luma_swap), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS},
74  {"ls", "swap luma fields", OFFSET(luma_swap), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS},
75  {"chroma_swap", "swap chroma fields", OFFSET(chroma_swap), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS},
76  {"cs", "swap chroma fields", OFFSET(chroma_swap), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS},
77  {"alpha_swap", "swap alpha fields", OFFSET(alpha_swap), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS},
78  {"as", "swap alpha fields", OFFSET(alpha_swap), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS},
79  {NULL}
80 };
81 
83 
85 {
87  int fmt;
88 
89  for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
90  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
91  if (!(desc->flags & AV_PIX_FMT_FLAG_PAL) && !(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
92  ff_add_format(&formats, fmt);
93  }
94 
95  return ff_set_common_formats(ctx, formats);
96 }
97 
98 static int config_input(AVFilterLink *inlink)
99 {
100  IlContext *s = inlink->dst->priv;
101  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
102  int ret;
103 
105 
106  s->has_alpha = !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
107  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
108  return ret;
109 
110  s->chroma_height = FF_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
111 
112  return 0;
113 }
114 
115 static void interleave(uint8_t *dst, uint8_t *src, int w, int h,
116  int dst_linesize, int src_linesize,
117  enum FilterMode mode, int swap)
118 {
119  const int a = swap;
120  const int b = 1 - a;
121  const int m = h >> 1;
122  int y;
123 
124  switch (mode) {
125  case MODE_DEINTERLEAVE:
126  for (y = 0; y < m; y++) {
127  memcpy(dst + dst_linesize * y , src + src_linesize * (y * 2 + a), w);
128  memcpy(dst + dst_linesize * (y + m), src + src_linesize * (y * 2 + b), w);
129  }
130  break;
131  case MODE_NONE:
132  for (y = 0; y < m; y++) {
133  memcpy(dst + dst_linesize * y * 2 , src + src_linesize * (y * 2 + a), w);
134  memcpy(dst + dst_linesize * (y * 2 + 1), src + src_linesize * (y * 2 + b), w);
135  }
136  break;
137  case MODE_INTERLEAVE:
138  for (y = 0; y < m; y++) {
139  memcpy(dst + dst_linesize * (y * 2 + a), src + src_linesize * y , w);
140  memcpy(dst + dst_linesize * (y * 2 + b), src + src_linesize * (y + m), w);
141  }
142  break;
143  }
144 }
145 
146 static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
147 {
148  IlContext *s = inlink->dst->priv;
149  AVFilterLink *outlink = inlink->dst->outputs[0];
150  AVFrame *out;
151  int comp;
152 
153  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
154  if (!out) {
155  av_frame_free(&inpicref);
156  return AVERROR(ENOMEM);
157  }
158  av_frame_copy_props(out, inpicref);
159 
160  interleave(out->data[0], inpicref->data[0],
161  s->linesize[0], inlink->h,
162  out->linesize[0], inpicref->linesize[0],
163  s->luma_mode, s->luma_swap);
164 
165  for (comp = 1; comp < (s->nb_planes - s->has_alpha); comp++) {
166  interleave(out->data[comp], inpicref->data[comp],
167  s->linesize[comp], s->chroma_height,
168  out->linesize[comp], inpicref->linesize[comp],
169  s->chroma_mode, s->chroma_swap);
170  }
171 
172  if (s->has_alpha) {
173  comp = s->nb_planes - 1;
174  interleave(out->data[comp], inpicref->data[comp],
175  s->linesize[comp], inlink->h,
176  out->linesize[comp], inpicref->linesize[comp],
177  s->alpha_mode, s->alpha_swap);
178  }
179 
180  av_frame_free(&inpicref);
181  return ff_filter_frame(outlink, out);
182 }
183 
184 static const AVFilterPad inputs[] = {
185  {
186  .name = "default",
187  .type = AVMEDIA_TYPE_VIDEO,
188  .filter_frame = filter_frame,
189  .config_props = config_input,
190  },
191  { NULL }
192 };
193 
194 static const AVFilterPad outputs[] = {
195  {
196  .name = "default",
197  .type = AVMEDIA_TYPE_VIDEO,
198  },
199  { NULL }
200 };
201 
203  .name = "il",
204  .description = NULL_IF_CONFIG_SMALL("Deinterleave or interleave fields."),
205  .priv_size = sizeof(IlContext),
207  .inputs = inputs,
208  .outputs = outputs,
209  .priv_class = &il_class,
211 };
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:115
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:631
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2090
int alpha_mode
FilterMode.
Definition: vf_il.c:41
This structure describes decoded (raw) audio or video data.
Definition: frame.h:171
static int query_formats(AVFilterContext *ctx)
Definition: vf_il.c:84
AVOption.
Definition: opt.h:255
const char * fmt
Definition: avisynth_c.h:632
misc image utilities
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2130
Main libavfilter public API header.
const char * b
Definition: vf_curves.c:109
static enum AVSampleFormat formats[]
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:109
AVFILTER_DEFINE_CLASS(il)
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:451
const char * name
Pad name.
Definition: internal.h:67
static void interleave(uint8_t *dst, uint8_t *src, int w, int h, int dst_linesize, int src_linesize, enum FilterMode mode, int swap)
Definition: vf_il.c:115
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1145
int chroma_swap
Definition: vf_il.c:42
uint8_t
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
Definition: pixdesc.h:156
mode
Definition: f_perms.c:27
AVOptions.
static const AVOption il_options[]
Definition: vf_il.c:51
int luma_swap
Definition: vf_il.c:42
static int config_input(AVFilterLink *inlink)
Definition: vf_il.c:98
unsigned m
Definition: audioconvert.c:187
A filter pad used for either input or output.
Definition: internal.h:61
int chroma_mode
Definition: vf_il.c:41
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:542
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:89
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:148
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
void * priv
private data for use by the filter
Definition: avfilter.h:654
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:123
int ff_add_format(AVFilterFormats **avff, int64_t fmt)
Add fmt to the list of media formats contained in *avff.
Definition: formats.c:323
int nb_planes
Definition: vf_il.c:43
int luma_mode
Definition: vf_il.c:41
float y
ret
Definition: avfilter.c:974
#define FF_CEIL_RSHIFT(a, b)
Definition: common.h:57
int linesize[4]
Definition: vf_il.c:44
static const AVFilterPad outputs[]
Definition: vf_il.c:194
FilterMode
Definition: vp9.h:64
int alpha_swap
Definition: vf_il.c:42
#define FLAGS
Definition: vf_il.c:49
AVS_Value src
Definition: avisynth_c.h:482
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:199
AVFilter ff_vf_il
Definition: vf_il.c:202
uint8_t flags
Definition: pixdesc.h:90
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:470
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
Definition: imgutils.c:88
const char * name
Filter name.
Definition: avfilter.h:474
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:648
static int flags
Definition: cpu.c:47
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:182
#define OFFSET(x)
Definition: vf_il.c:48
int has_alpha
Definition: vf_il.c:45
int chroma_height
Definition: vf_il.c:44
A list of supported formats for one end of a filter link.
Definition: formats.h:64
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> out
An instance of a filter.
Definition: avfilter.h:633
static void comp(unsigned char *dst, int dst_stride, unsigned char *src, int src_stride, int add)
Definition: eamad.c:83
internal API functions
static const AVFilterPad inputs[]
Definition: vf_il.c:184
static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
Definition: vf_il.c:146
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:548