[FFmpeg-devel,v9,1/2] lavf/vf_transpose: add exif orientation support

Add exif orientation support and expose an option.
---
 libavfilter/hflip.h        |   2 +
 libavfilter/transpose.h    |  14 ++++
 libavfilter/vf_hflip.c     |  40 ++++++---
 libavfilter/vf_transpose.c | 168 ++++++++++++++++++++++++++++++++-----
 4 files changed, 192 insertions(+), 32 deletions(-)

On 6/9/19, Jun Li <junli1026@gmail.com> wrote:
> Add exif orientation support and expose an option.
> ---
>  libavfilter/hflip.h        |   2 +
>  libavfilter/transpose.h    |  14 ++++
>  libavfilter/vf_hflip.c     |  40 ++++++---
>  libavfilter/vf_transpose.c | 168 ++++++++++++++++++++++++++++++++-----
>  4 files changed, 192 insertions(+), 32 deletions(-)
>
> diff --git a/libavfilter/hflip.h b/libavfilter/hflip.h
> index 204090dbb4..4e89bae3fc 100644
> --- a/libavfilter/hflip.h
> +++ b/libavfilter/hflip.h
> @@ -35,5 +35,7 @@ typedef struct FlipContext {
>
>  int ff_hflip_init(FlipContext *s, int step[4], int nb_planes);
>  void ff_hflip_init_x86(FlipContext *s, int step[4], int nb_planes);
> +int ff_hflip_config_props(FlipContext* s, AVFilterLink *inlink);
> +int ff_hflip_filter_slice(FlipContext *s, AVFrame *in, AVFrame *out, int
> job, int nb_jobs, int vlifp);
>
>  #endif /* AVFILTER_HFLIP_H */
> diff --git a/libavfilter/transpose.h b/libavfilter/transpose.h
> index aa262b9487..5da08bddc0 100644
> --- a/libavfilter/transpose.h
> +++ b/libavfilter/transpose.h
> @@ -34,4 +34,18 @@ enum TransposeDir {
>      TRANSPOSE_VFLIP,
>  };
>
> +enum OrientationType {
> +    ORIENTATION_AUTO_TRANSPOSE = -2,
> +    ORIENTATION_AUTO_FLIP = -1,
> +    ORIENTATION_NONE = 0,
> +    ORIENTATION_NORMAL,
> +    ORIENTATION_HFLIP,
> +    ORIENTATION_ROTATE180,
> +    ORIENTATION_VFLIP,
> +    ORIENTATION_HFLIP_ROTATE270CW,
> +    ORIENTATION_ROTATE90CW,
> +    ORIENTATION_HFLIP_ROTATE90CW,
> +    ORIENTATION_ROTATE270CW
> +};
> +
>  #endif
> diff --git a/libavfilter/vf_hflip.c b/libavfilter/vf_hflip.c
> index b77afc77fc..d24ca5c2e7 100644
> --- a/libavfilter/vf_hflip.c
> +++ b/libavfilter/vf_hflip.c
> @@ -125,9 +125,8 @@ static void hflip_qword_c(const uint8_t *ssrc, uint8_t
> *ddst, int w)
>          dst[j] = src[-j];
>  }
>
> -static int config_props(AVFilterLink *inlink)
> +int ff_hflip_config_props(FlipContext* s, AVFilterLink *inlink)
>  {
> -    FlipContext *s = inlink->dst->priv;
>      const AVPixFmtDescriptor *pix_desc =
> av_pix_fmt_desc_get(inlink->format);
>      const int hsub = pix_desc->log2_chroma_w;
>      const int vsub = pix_desc->log2_chroma_h;
> @@ -144,6 +143,12 @@ static int config_props(AVFilterLink *inlink)
>      return ff_hflip_init(s, s->max_step, nb_planes);
>  }
>
> +static int config_props(AVFilterLink *inlink)
> +{
> +    FlipContext *s = inlink->dst->priv;
> +    return ff_hflip_config_props(s, inlink);
> +}
> +
>  int ff_hflip_init(FlipContext *s, int step[4], int nb_planes)
>  {
>      int i;
> @@ -170,14 +175,10 @@ typedef struct ThreadData {
>      AVFrame *in, *out;
>  } ThreadData;
>
> -static int filter_slice(AVFilterContext *ctx, void *arg, int job, int
> nb_jobs)
> +int ff_hflip_filter_slice(FlipContext *s, AVFrame *in, AVFrame *out, int
> job, int nb_jobs, int vflip)
>  {
> -    FlipContext *s = ctx->priv;
> -    ThreadData *td = arg;
> -    AVFrame *in = td->in;
> -    AVFrame *out = td->out;
>      uint8_t *inrow, *outrow;
> -    int i, plane, step;
> +    int i, plane, step, outlinesize;
>
>      for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane];
> plane++) {
>          const int width  = s->planewidth[plane];
> @@ -187,19 +188,36 @@ static int filter_slice(AVFilterContext *ctx, void
> *arg, int job, int nb_jobs)
>
>          step = s->max_step[plane];
>
> -        outrow = out->data[plane] + start * out->linesize[plane];
> -        inrow  = in ->data[plane] + start * in->linesize[plane] + (width -
> 1) * step;
> +        if (vflip) {
> +            outrow = out->data[plane] + (height - start - 1)*
> out->linesize[plane];
> +            outlinesize = -out->linesize[plane];
> +        } else {
> +            outrow = out->data[plane] + start * out->linesize[plane];
> +            outlinesize = out->linesize[plane];
> +        }
> +
> +        inrow = in->data[plane] + start * in->linesize[plane] +  (width -
> 1) * step;
> +
>          for (i = start; i < end; i++) {
>              s->flip_line[plane](inrow, outrow, width);
>
>              inrow  += in ->linesize[plane];
> -            outrow += out->linesize[plane];
> +            outrow += outlinesize;
>          }
>      }
>
>      return 0;
>  }
>
> +static int filter_slice(AVFilterContext *ctx, void *arg, int job, int
> nb_jobs)
> +{
> +    FlipContext *s = ctx->priv;
> +    ThreadData *td = arg;
> +    AVFrame *in = td->in;
> +    AVFrame *out = td->out;
> +    return ff_hflip_filter_slice(s, in, out, job, nb_jobs, 0);
> +}
> +
>  static int filter_frame(AVFilterLink *inlink, AVFrame *in)
>  {
>      AVFilterContext *ctx  = inlink->dst;
> diff --git a/libavfilter/vf_transpose.c b/libavfilter/vf_transpose.c
> index dd54947bd9..7a122ba8a9 100644
> --- a/libavfilter/vf_transpose.c
> +++ b/libavfilter/vf_transpose.c
> @@ -39,6 +39,7 @@
>  #include "internal.h"
>  #include "video.h"
>  #include "transpose.h"
> +#include "hflip.h"
>
>  typedef struct TransVtable {
>      void (*transpose_8x8)(uint8_t *src, ptrdiff_t src_linesize,
> @@ -48,16 +49,22 @@ typedef struct TransVtable {
>                              int w, int h);
>  } TransVtable;
>
> -typedef struct TransContext {
> -    const AVClass *class;
> +typedef struct TransContextData {
>      int hsub, vsub;
>      int planes;
>      int pixsteps[4];
> +    TransVtable vtables[4];
> +} TransContextData;
>
> +typedef struct TransContext {
> +    const AVClass *class;
>      int passthrough;    ///< PassthroughType, landscape passthrough mode
> enabled
>      int dir;            ///< TransposeDir
> -
> -    TransVtable vtables[4];
> +    int orientation;    ///< OrientationType
> +    union {
> +        TransContextData transpose;
> +        FlipContext flip;
> +    } ctx;
>  } TransContext;
>
>  static int query_formats(AVFilterContext *ctx)
> @@ -207,14 +214,18 @@ static int config_props_output(AVFilterLink *outlink)
>          s->passthrough = TRANSPOSE_PT_TYPE_NONE;
>      }
>
> -    s->hsub = desc_in->log2_chroma_w;
> -    s->vsub = desc_in->log2_chroma_h;
> -    s->planes = av_pix_fmt_count_planes(outlink->format);
> +    if (s->orientation == ORIENTATION_AUTO_FLIP ||
> +       (s->orientation > ORIENTATION_NONE && s->orientation <=
> ORIENTATION_VFLIP))
> +        return ff_hflip_config_props(&(s->ctx.flip), inlink);
> +
> +    s->ctx.transpose.hsub = desc_in->log2_chroma_w;
> +    s->ctx.transpose.vsub = desc_in->log2_chroma_h;
> +    s->ctx.transpose.planes = av_pix_fmt_count_planes(outlink->format);
>
>      av_assert0(desc_in->nb_components == desc_out->nb_components);
>
>
> -    av_image_fill_max_pixsteps(s->pixsteps, NULL, desc_out);
> +    av_image_fill_max_pixsteps(s->ctx.transpose.pixsteps, NULL, desc_out);
>
>      outlink->w = inlink->h;
>      outlink->h = inlink->w;
> @@ -226,10 +237,10 @@ static int config_props_output(AVFilterLink *outlink)
>          outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
>
>      for (int i = 0; i < 4; i++) {
> -        TransVtable *v = &s->vtables[i];
> -        switch (s->pixsteps[i]) {
> +        TransVtable *v = &s->ctx.transpose.vtables[i];
> +        switch (s->ctx.transpose.pixsteps[i]) {
>          case 1: v->transpose_block = transpose_block_8_c;
> -                v->transpose_8x8   = transpose_8x8_8_c;  break;
> +                v->transpose_8x8   = transpose_8x8_8_c; break;
>          case 2: v->transpose_block = transpose_block_16_c;
>                  v->transpose_8x8   = transpose_8x8_16_c; break;
>          case 3: v->transpose_block = transpose_block_24_c;
> @@ -262,21 +273,69 @@ static AVFrame *get_video_buffer(AVFilterLink *inlink,
> int w, int h)
>
>  typedef struct ThreadData {
>      AVFrame *in, *out;
> +    int orientation;
>  } ThreadData;
>
> -static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr,
> -                        int nb_jobs)
> +static int get_frame_orientation(AVFilterContext *ctx, const AVFrame
> *frame)
> +{
> +    TransContext *s = ctx->priv;
> +    AVDictionaryEntry *entry = NULL;
> +    int orientation = ORIENTATION_NONE;
> +
> +    if (s->orientation >= ORIENTATION_NONE)
> +        return s->orientation;
> +
> +    // read exif orientation data
> +    entry = av_dict_get(frame->metadata, "Orientation", NULL, 0);
> +    if (entry && entry->value)
> +        orientation = atoi(entry->value);
> +
> +    // check frame orientation validity
> +    if (orientation < ORIENTATION_NORMAL ||
> +        orientation > ORIENTATION_ROTATE270CW) {
> +        // frame orientation is invalid or empty, we have to guess one.
> +        av_log(ctx, AV_LOG_WARNING, "Frame orientation is either empty or
> invalid.\n");
> +        return s->orientation == ORIENTATION_AUTO_FLIP ?
> +               ORIENTATION_NORMAL : ORIENTATION_HFLIP_ROTATE270CW;
> +    }
> +
> +    // check conflict between frame orientation and passed-in orientation
> option
> +    if (s->orientation == ORIENTATION_AUTO_FLIP &&
> +        orientation > ORIENTATION_VFLIP) {
> +        av_log(ctx, AV_LOG_WARNING,
> +               "Found valid orientation value: %i, but auto-flip only cover
> range [1, 4]. Set to default value 1(ORIENTATION_NONE).\n",
> +               orientation);
> +        // conflict happens, return the min value of orientation range
> +        return ORIENTATION_NORMAL;
> +    }
> +
> +    // check conflict between frame orientation and passed-in orientation
> option
> +    if (s->orientation == ORIENTATION_AUTO_TRANSPOSE &&
> +        orientation <= ORIENTATION_VFLIP) {
> +        av_log(ctx, AV_LOG_WARNING,
> +               "Found valid orientation value: %i, but auto-transpose only
> cover range [5, 8]. Set to default value
> 5(ORIENTATION_HFLIP_ROTATE270CW).\n",
> +               orientation);
> +        // conflict happens, return the min value of orientation range,
> same effect as dir=0
> +        return ORIENTATION_HFLIP_ROTATE270CW;
> +    }
> +
> +    return orientation;
> +}
> +
> +static int transpose_filter_slice(AVFilterContext *ctx, void *arg, int
> jobnr, int nb_jobs)
>  {
>      TransContext *s = ctx->priv;
>      ThreadData *td = arg;
>      AVFrame *out = td->out;
>      AVFrame *in = td->in;
> +    TransContextData *c = &(s->ctx.transpose);
> +    int orientation = td->orientation;
>      int plane;
>
> -    for (plane = 0; plane < s->planes; plane++) {
> -        int hsub    = plane == 1 || plane == 2 ? s->hsub : 0;
> -        int vsub    = plane == 1 || plane == 2 ? s->vsub : 0;
> -        int pixstep = s->pixsteps[plane];
> +    for (plane = 0; plane < c->planes; plane++) {
> +        int hsub    = plane == 1 || plane == 2 ? c->hsub : 0;
> +        int vsub    = plane == 1 || plane == 2 ? c->vsub : 0;
> +        int pixstep = c->pixsteps[plane];
>          int inh     = AV_CEIL_RSHIFT(in->height, vsub);
>          int outw    = AV_CEIL_RSHIFT(out->width,  hsub);
>          int outh    = AV_CEIL_RSHIFT(out->height, vsub);
> @@ -285,19 +344,36 @@ static int filter_slice(AVFilterContext *ctx, void
> *arg, int jobnr,
>          uint8_t *dst, *src;
>          int dstlinesize, srclinesize;
>          int x, y;
> -        TransVtable *v = &s->vtables[plane];
> +        int dir = s->dir;
> +        TransVtable *v = &c->vtables[plane];
>
>          dstlinesize = out->linesize[plane];
>          dst         = out->data[plane] + start * dstlinesize;
>          src         = in->data[plane];
>          srclinesize = in->linesize[plane];
> +        switch (orientation) {
> +            case ORIENTATION_HFLIP_ROTATE270CW:
> +                dir = 0; // mirror horizontal and rotate 270 CW, same as
> dir=cclock_flip
> +                break;
> +            case ORIENTATION_ROTATE90CW:
> +                dir = 1; // rotate 90 CW, same as dir=clock
> +                break;
> +            case ORIENTATION_HFLIP_ROTATE90CW:
> +                dir = 3; // mirror horizontal and rotate 90 CW, same as
> dir=clock_flip
> +                break;
> +            case ORIENTATION_ROTATE270CW:
> +                dir = 2; // rotate 270 CW, same as dir=cclock
> +                break;
> +            default:
> +                break;
> +        }
>
> -        if (s->dir & 1) {
> +        if (dir & 1) {
>              src         += in->linesize[plane] * (inh - 1);
>              srclinesize *= -1;
>          }
>
> -        if (s->dir & 2) {
> +        if (dir & 2) {
>              dst          = out->data[plane] + dstlinesize * (outh - start -
> 1);
>              dstlinesize *= -1;
>          }
> @@ -326,6 +402,22 @@ static int filter_slice(AVFilterContext *ctx, void
> *arg, int jobnr,
>      return 0;
>  }
>
> +static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr,
> +                        int nb_jobs)
> +{
> +    TransContext *s = ctx->priv;
> +    ThreadData *td = arg;
> +    AVFrame *out = td->out;
> +    AVFrame *in = td->in;
> +    int orientation = td->orientation;
> +
> +    if (orientation > ORIENTATION_NONE && orientation <= ORIENTATION_VFLIP)
> {
> +        return ff_hflip_filter_slice(&s->ctx.flip, in, out, jobnr, nb_jobs,
> +                                     orientation == ORIENTATION_ROTATE180);
> +    }
> +    return transpose_filter_slice(ctx, arg, jobnr, nb_jobs);
> +}
> +
>  static int filter_frame(AVFilterLink *inlink, AVFrame *in)
>  {
>      AVFilterContext *ctx = inlink->dst;
> @@ -333,10 +425,29 @@ static int filter_frame(AVFilterLink *inlink, AVFrame
> *in)
>      AVFilterLink *outlink = ctx->outputs[0];
>      ThreadData td;
>      AVFrame *out;
> +    int orientation = ORIENTATION_NONE;
>
>      if (s->passthrough)
>          return ff_filter_frame(outlink, in);
>
> +    if (s->orientation) {
> +        orientation = get_frame_orientation(ctx, in);
> +        if (orientation == ORIENTATION_NORMAL) // orientation 'Normal', do
> nothing
> +            return ff_filter_frame(outlink, in);
> +
> +        if (orientation == ORIENTATION_VFLIP) {
> +            int i;
> +            for (i = 0; i < 4; i ++) {
> +                int height = s->ctx.flip.planeheight[i];
> +                if (in->data[i]) {
> +                    in->data[i] += (height - 1) * in->linesize[i];
> +                    in->linesize[i] = -in->linesize[i];
> +                }
> +            }
> +            return ff_filter_frame(outlink, in);
> +        }
> +    }
> +
>      out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
>      if (!out) {
>          av_frame_free(&in);
> @@ -346,12 +457,14 @@ static int filter_frame(AVFilterLink *inlink, AVFrame
> *in)
>
>      if (in->sample_aspect_ratio.num == 0) {
>          out->sample_aspect_ratio = in->sample_aspect_ratio;
> -    } else {
> +    } else if (s->orientation == ORIENTATION_AUTO_TRANSPOSE ||
> +               orientation > ORIENTATION_VFLIP) { // transpose
>          out->sample_aspect_ratio.num = in->sample_aspect_ratio.den;
>          out->sample_aspect_ratio.den = in->sample_aspect_ratio.num;
>      }
>
>      td.in = in, td.out = out;
> +    td.orientation = orientation;
>      ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outlink->h,
> ff_filter_get_nb_threads(ctx)));
>      av_frame_free(&in);
>      return ff_filter_frame(outlink, out);
> @@ -373,6 +486,19 @@ static const AVOption transpose_options[] = {
>          { "portrait",  "preserve portrait geometry",   0,
> AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT},  INT_MIN, INT_MAX,
> FLAGS, "passthrough" },
>          { "landscape", "preserve landscape geometry",  0,
> AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX,
> FLAGS, "passthrough" },
>
> +    { "orientation", "apply frame exif orientation",
> +      OFFSET(orientation), AV_OPT_TYPE_INT, {.i64 = ORIENTATION_NONE },
> -2, 8, FLAGS, "orientation" },

-2 and 8 are still hardcoded here.

> +        { "auto_transpose",    "apply transposition if frame's orientation
> value is in range [5,8]",                     0, AV_OPT_TYPE_CONST,
> {.i64=ORIENTATION_AUTO_TRANSPOSE},    INT_MIN, INT_MAX, FLAGS, "orientation"
> },
> +        { "auto_flip",         "apply flip if frame's orientation value is
> in range [1,4]",                              0, AV_OPT_TYPE_CONST,
> {.i64=ORIENTATION_AUTO_FLIP},         INT_MIN, INT_MAX, FLAGS, "orientation"
> },
> +        { "none",              "apply default transposition, same as
> dir=cclock_flip",                                   0, AV_OPT_TYPE_CONST,
> {.i64=ORIENTATION_NONE},              INT_MIN, INT_MAX, FLAGS, "orientation"
> },
> +        { "normal",            "exif orientation 'Normal', do not apply any
> flip or transposition",                      0, AV_OPT_TYPE_CONST,
> {.i64=ORIENTATION_NORMAL},            INT_MIN, INT_MAX, FLAGS, "orientation"
> },
> +        { "hflip",             "exif orientation 'Mirror horizontal', apply
> horizontal flip",                            0, AV_OPT_TYPE_CONST,
> {.i64=ORIENTATION_HFLIP},             INT_MIN, INT_MAX, FLAGS, "orientation"
> },
> +        { "rotate180",         "exif orientation 'Rotate 180', apply
> rotation 180",                                      0, AV_OPT_TYPE_CONST,
> {.i64=ORIENTATION_ROTATE180},         INT_MIN, INT_MAX, FLAGS, "orientation"
> },
> +        { "vflip",             "exif orientation 'Mirror vertical', apply
> vertical flip",                                0, AV_OPT_TYPE_CONST,
> {.i64=ORIENTATION_VFLIP},             INT_MIN, INT_MAX, FLAGS, "orientation"
> },
> +        { "hflip_rotate270cw", "exif orientation 'Mirror horizontal and
> rotate 270 CW', same effect as dir=cclock_flip", 0, AV_OPT_TYPE_CONST,
> {.i64=ORIENTATION_HFLIP_ROTATE270CW}, INT_MIN, INT_MAX, FLAGS, "orientation"
> },
> +        { "rotate90cw",        "exif orientation 'Rotate 90 CW', same as
> dir=clock",                                     0, AV_OPT_TYPE_CONST,
> {.i64=ORIENTATION_ROTATE90CW},        INT_MIN, INT_MAX, FLAGS, "orientation"
> },
> +        { "hflip_rotate90cw",  "exif orientation 'Mirror horizontal and
> rotate 90 CW', same effect as dir=clock_flip",   0, AV_OPT_TYPE_CONST,
> {.i64=ORIENTATION_HFLIP_ROTATE90CW},  INT_MIN, INT_MAX, FLAGS, "orientation"
> },
> +        { "rotate270",         "exif orientation 'Rotate 270 CW', same as
> dir=cclock",                                   0, AV_OPT_TYPE_CONST,
> {.i64=ORIENTATION_ROTATE270CW},       INT_MIN, INT_MAX, FLAGS, "orientation"
> },
>      { NULL }
>  };
>
> --
> 2.17.1
>
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On Sun, Jun 9, 2019 at 12:49 AM Paul B Mahol <onemda@gmail.com> wrote:

> On 6/9/19, Jun Li <junli1026@gmail.com> wrote:
> > Add exif orientation support and expose an option.
> > ---
> >  libavfilter/hflip.h        |   2 +
> >  libavfilter/transpose.h    |  14 ++++
> >  libavfilter/vf_hflip.c     |  40 ++++++---
> >  libavfilter/vf_transpose.c | 168 ++++++++++++++++++++++++++++++++-----
> >  4 files changed, 192 insertions(+), 32 deletions(-)
> >
> > diff --git a/libavfilter/hflip.h b/libavfilter/hflip.h
> > index 204090dbb4..4e89bae3fc 100644
> > --- a/libavfilter/hflip.h
> > +++ b/libavfilter/hflip.h
> > @@ -35,5 +35,7 @@ typedef struct FlipContext {
> >
> >  int ff_hflip_init(FlipContext *s, int step[4], int nb_planes);
> >  void ff_hflip_init_x86(FlipContext *s, int step[4], int nb_planes);
> > +int ff_hflip_config_props(FlipContext* s, AVFilterLink *inlink);
> > +int ff_hflip_filter_slice(FlipContext *s, AVFrame *in, AVFrame *out, int
> > job, int nb_jobs, int vlifp);
> >
> >  #endif /* AVFILTER_HFLIP_H */
> > diff --git a/libavfilter/transpose.h b/libavfilter/transpose.h
> > index aa262b9487..5da08bddc0 100644
> > --- a/libavfilter/transpose.h
> > +++ b/libavfilter/transpose.h
> > @@ -34,4 +34,18 @@ enum TransposeDir {
> >      TRANSPOSE_VFLIP,
> >  };
> >
> > +enum OrientationType {
> > +    ORIENTATION_AUTO_TRANSPOSE = -2,
> > +    ORIENTATION_AUTO_FLIP = -1,
> > +    ORIENTATION_NONE = 0,
> > +    ORIENTATION_NORMAL,
> > +    ORIENTATION_HFLIP,
> > +    ORIENTATION_ROTATE180,
> > +    ORIENTATION_VFLIP,
> > +    ORIENTATION_HFLIP_ROTATE270CW,
> > +    ORIENTATION_ROTATE90CW,
> > +    ORIENTATION_HFLIP_ROTATE90CW,
> > +    ORIENTATION_ROTATE270CW
> > +};
> > +
> >  #endif
> > diff --git a/libavfilter/vf_hflip.c b/libavfilter/vf_hflip.c
> > index b77afc77fc..d24ca5c2e7 100644
> > --- a/libavfilter/vf_hflip.c
> > +++ b/libavfilter/vf_hflip.c
> > @@ -125,9 +125,8 @@ static void hflip_qword_c(const uint8_t *ssrc,
> uint8_t
> > *ddst, int w)
> >          dst[j] = src[-j];
> >  }
> >
> > -static int config_props(AVFilterLink *inlink)
> > +int ff_hflip_config_props(FlipContext* s, AVFilterLink *inlink)
> >  {
> > -    FlipContext *s = inlink->dst->priv;
> >      const AVPixFmtDescriptor *pix_desc =
> > av_pix_fmt_desc_get(inlink->format);
> >      const int hsub = pix_desc->log2_chroma_w;
> >      const int vsub = pix_desc->log2_chroma_h;
> > @@ -144,6 +143,12 @@ static int config_props(AVFilterLink *inlink)
> >      return ff_hflip_init(s, s->max_step, nb_planes);
> >  }
> >
> > +static int config_props(AVFilterLink *inlink)
> > +{
> > +    FlipContext *s = inlink->dst->priv;
> > +    return ff_hflip_config_props(s, inlink);
> > +}
> > +
> >  int ff_hflip_init(FlipContext *s, int step[4], int nb_planes)
> >  {
> >      int i;
> > @@ -170,14 +175,10 @@ typedef struct ThreadData {
> >      AVFrame *in, *out;
> >  } ThreadData;
> >
> > -static int filter_slice(AVFilterContext *ctx, void *arg, int job, int
> > nb_jobs)
> > +int ff_hflip_filter_slice(FlipContext *s, AVFrame *in, AVFrame *out, int
> > job, int nb_jobs, int vflip)
> >  {
> > -    FlipContext *s = ctx->priv;
> > -    ThreadData *td = arg;
> > -    AVFrame *in = td->in;
> > -    AVFrame *out = td->out;
> >      uint8_t *inrow, *outrow;
> > -    int i, plane, step;
> > +    int i, plane, step, outlinesize;
> >
> >      for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane];
> > plane++) {
> >          const int width  = s->planewidth[plane];
> > @@ -187,19 +188,36 @@ static int filter_slice(AVFilterContext *ctx, void
> > *arg, int job, int nb_jobs)
> >
> >          step = s->max_step[plane];
> >
> > -        outrow = out->data[plane] + start * out->linesize[plane];
> > -        inrow  = in ->data[plane] + start * in->linesize[plane] +
> (width -
> > 1) * step;
> > +        if (vflip) {
> > +            outrow = out->data[plane] + (height - start - 1)*
> > out->linesize[plane];
> > +            outlinesize = -out->linesize[plane];
> > +        } else {
> > +            outrow = out->data[plane] + start * out->linesize[plane];
> > +            outlinesize = out->linesize[plane];
> > +        }
> > +
> > +        inrow = in->data[plane] + start * in->linesize[plane] +  (width
> -
> > 1) * step;
> > +
> >          for (i = start; i < end; i++) {
> >              s->flip_line[plane](inrow, outrow, width);
> >
> >              inrow  += in ->linesize[plane];
> > -            outrow += out->linesize[plane];
> > +            outrow += outlinesize;
> >          }
> >      }
> >
> >      return 0;
> >  }
> >
> > +static int filter_slice(AVFilterContext *ctx, void *arg, int job, int
> > nb_jobs)
> > +{
> > +    FlipContext *s = ctx->priv;
> > +    ThreadData *td = arg;
> > +    AVFrame *in = td->in;
> > +    AVFrame *out = td->out;
> > +    return ff_hflip_filter_slice(s, in, out, job, nb_jobs, 0);
> > +}
> > +
> >  static int filter_frame(AVFilterLink *inlink, AVFrame *in)
> >  {
> >      AVFilterContext *ctx  = inlink->dst;
> > diff --git a/libavfilter/vf_transpose.c b/libavfilter/vf_transpose.c
> > index dd54947bd9..7a122ba8a9 100644
> > --- a/libavfilter/vf_transpose.c
> > +++ b/libavfilter/vf_transpose.c
> > @@ -39,6 +39,7 @@
> >  #include "internal.h"
> >  #include "video.h"
> >  #include "transpose.h"
> > +#include "hflip.h"
> >
> >  typedef struct TransVtable {
> >      void (*transpose_8x8)(uint8_t *src, ptrdiff_t src_linesize,
> > @@ -48,16 +49,22 @@ typedef struct TransVtable {
> >                              int w, int h);
> >  } TransVtable;
> >
> > -typedef struct TransContext {
> > -    const AVClass *class;
> > +typedef struct TransContextData {
> >      int hsub, vsub;
> >      int planes;
> >      int pixsteps[4];
> > +    TransVtable vtables[4];
> > +} TransContextData;
> >
> > +typedef struct TransContext {
> > +    const AVClass *class;
> >      int passthrough;    ///< PassthroughType, landscape passthrough mode
> > enabled
> >      int dir;            ///< TransposeDir
> > -
> > -    TransVtable vtables[4];
> > +    int orientation;    ///< OrientationType
> > +    union {
> > +        TransContextData transpose;
> > +        FlipContext flip;
> > +    } ctx;
> >  } TransContext;
> >
> >  static int query_formats(AVFilterContext *ctx)
> > @@ -207,14 +214,18 @@ static int config_props_output(AVFilterLink
> *outlink)
> >          s->passthrough = TRANSPOSE_PT_TYPE_NONE;
> >      }
> >
> > -    s->hsub = desc_in->log2_chroma_w;
> > -    s->vsub = desc_in->log2_chroma_h;
> > -    s->planes = av_pix_fmt_count_planes(outlink->format);
> > +    if (s->orientation == ORIENTATION_AUTO_FLIP ||
> > +       (s->orientation > ORIENTATION_NONE && s->orientation <=
> > ORIENTATION_VFLIP))
> > +        return ff_hflip_config_props(&(s->ctx.flip), inlink);
> > +
> > +    s->ctx.transpose.hsub = desc_in->log2_chroma_w;
> > +    s->ctx.transpose.vsub = desc_in->log2_chroma_h;
> > +    s->ctx.transpose.planes = av_pix_fmt_count_planes(outlink->format);
> >
> >      av_assert0(desc_in->nb_components == desc_out->nb_components);
> >
> >
> > -    av_image_fill_max_pixsteps(s->pixsteps, NULL, desc_out);
> > +    av_image_fill_max_pixsteps(s->ctx.transpose.pixsteps, NULL,
> desc_out);
> >
> >      outlink->w = inlink->h;
> >      outlink->h = inlink->w;
> > @@ -226,10 +237,10 @@ static int config_props_output(AVFilterLink
> *outlink)
> >          outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
> >
> >      for (int i = 0; i < 4; i++) {
> > -        TransVtable *v = &s->vtables[i];
> > -        switch (s->pixsteps[i]) {
> > +        TransVtable *v = &s->ctx.transpose.vtables[i];
> > +        switch (s->ctx.transpose.pixsteps[i]) {
> >          case 1: v->transpose_block = transpose_block_8_c;
> > -                v->transpose_8x8   = transpose_8x8_8_c;  break;
> > +                v->transpose_8x8   = transpose_8x8_8_c; break;
> >          case 2: v->transpose_block = transpose_block_16_c;
> >                  v->transpose_8x8   = transpose_8x8_16_c; break;
> >          case 3: v->transpose_block = transpose_block_24_c;
> > @@ -262,21 +273,69 @@ static AVFrame *get_video_buffer(AVFilterLink
> *inlink,
> > int w, int h)
> >
> >  typedef struct ThreadData {
> >      AVFrame *in, *out;
> > +    int orientation;
> >  } ThreadData;
> >
> > -static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr,
> > -                        int nb_jobs)
> > +static int get_frame_orientation(AVFilterContext *ctx, const AVFrame
> > *frame)
> > +{
> > +    TransContext *s = ctx->priv;
> > +    AVDictionaryEntry *entry = NULL;
> > +    int orientation = ORIENTATION_NONE;
> > +
> > +    if (s->orientation >= ORIENTATION_NONE)
> > +        return s->orientation;
> > +
> > +    // read exif orientation data
> > +    entry = av_dict_get(frame->metadata, "Orientation", NULL, 0);
> > +    if (entry && entry->value)
> > +        orientation = atoi(entry->value);
> > +
> > +    // check frame orientation validity
> > +    if (orientation < ORIENTATION_NORMAL ||
> > +        orientation > ORIENTATION_ROTATE270CW) {
> > +        // frame orientation is invalid or empty, we have to guess one.
> > +        av_log(ctx, AV_LOG_WARNING, "Frame orientation is either empty
> or
> > invalid.\n");
> > +        return s->orientation == ORIENTATION_AUTO_FLIP ?
> > +               ORIENTATION_NORMAL : ORIENTATION_HFLIP_ROTATE270CW;
> > +    }
> > +
> > +    // check conflict between frame orientation and passed-in
> orientation
> > option
> > +    if (s->orientation == ORIENTATION_AUTO_FLIP &&
> > +        orientation > ORIENTATION_VFLIP) {
> > +        av_log(ctx, AV_LOG_WARNING,
> > +               "Found valid orientation value: %i, but auto-flip only
> cover
> > range [1, 4]. Set to default value 1(ORIENTATION_NONE).\n",
> > +               orientation);
> > +        // conflict happens, return the min value of orientation range
> > +        return ORIENTATION_NORMAL;
> > +    }
> > +
> > +    // check conflict between frame orientation and passed-in
> orientation
> > option
> > +    if (s->orientation == ORIENTATION_AUTO_TRANSPOSE &&
> > +        orientation <= ORIENTATION_VFLIP) {
> > +        av_log(ctx, AV_LOG_WARNING,
> > +               "Found valid orientation value: %i, but auto-transpose
> only
> > cover range [5, 8]. Set to default value
> > 5(ORIENTATION_HFLIP_ROTATE270CW).\n",
> > +               orientation);
> > +        // conflict happens, return the min value of orientation range,
> > same effect as dir=0
> > +        return ORIENTATION_HFLIP_ROTATE270CW;
> > +    }
> > +
> > +    return orientation;
> > +}
> > +
> > +static int transpose_filter_slice(AVFilterContext *ctx, void *arg, int
> > jobnr, int nb_jobs)
> >  {
> >      TransContext *s = ctx->priv;
> >      ThreadData *td = arg;
> >      AVFrame *out = td->out;
> >      AVFrame *in = td->in;
> > +    TransContextData *c = &(s->ctx.transpose);
> > +    int orientation = td->orientation;
> >      int plane;
> >
> > -    for (plane = 0; plane < s->planes; plane++) {
> > -        int hsub    = plane == 1 || plane == 2 ? s->hsub : 0;
> > -        int vsub    = plane == 1 || plane == 2 ? s->vsub : 0;
> > -        int pixstep = s->pixsteps[plane];
> > +    for (plane = 0; plane < c->planes; plane++) {
> > +        int hsub    = plane == 1 || plane == 2 ? c->hsub : 0;
> > +        int vsub    = plane == 1 || plane == 2 ? c->vsub : 0;
> > +        int pixstep = c->pixsteps[plane];
> >          int inh     = AV_CEIL_RSHIFT(in->height, vsub);
> >          int outw    = AV_CEIL_RSHIFT(out->width,  hsub);
> >          int outh    = AV_CEIL_RSHIFT(out->height, vsub);
> > @@ -285,19 +344,36 @@ static int filter_slice(AVFilterContext *ctx, void
> > *arg, int jobnr,
> >          uint8_t *dst, *src;
> >          int dstlinesize, srclinesize;
> >          int x, y;
> > -        TransVtable *v = &s->vtables[plane];
> > +        int dir = s->dir;
> > +        TransVtable *v = &c->vtables[plane];
> >
> >          dstlinesize = out->linesize[plane];
> >          dst         = out->data[plane] + start * dstlinesize;
> >          src         = in->data[plane];
> >          srclinesize = in->linesize[plane];
> > +        switch (orientation) {
> > +            case ORIENTATION_HFLIP_ROTATE270CW:
> > +                dir = 0; // mirror horizontal and rotate 270 CW, same as
> > dir=cclock_flip
> > +                break;
> > +            case ORIENTATION_ROTATE90CW:
> > +                dir = 1; // rotate 90 CW, same as dir=clock
> > +                break;
> > +            case ORIENTATION_HFLIP_ROTATE90CW:
> > +                dir = 3; // mirror horizontal and rotate 90 CW, same as
> > dir=clock_flip
> > +                break;
> > +            case ORIENTATION_ROTATE270CW:
> > +                dir = 2; // rotate 270 CW, same as dir=cclock
> > +                break;
> > +            default:
> > +                break;
> > +        }
> >
> > -        if (s->dir & 1) {
> > +        if (dir & 1) {
> >              src         += in->linesize[plane] * (inh - 1);
> >              srclinesize *= -1;
> >          }
> >
> > -        if (s->dir & 2) {
> > +        if (dir & 2) {
> >              dst          = out->data[plane] + dstlinesize * (outh -
> start -
> > 1);
> >              dstlinesize *= -1;
> >          }
> > @@ -326,6 +402,22 @@ static int filter_slice(AVFilterContext *ctx, void
> > *arg, int jobnr,
> >      return 0;
> >  }
> >
> > +static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr,
> > +                        int nb_jobs)
> > +{
> > +    TransContext *s = ctx->priv;
> > +    ThreadData *td = arg;
> > +    AVFrame *out = td->out;
> > +    AVFrame *in = td->in;
> > +    int orientation = td->orientation;
> > +
> > +    if (orientation > ORIENTATION_NONE && orientation <=
> ORIENTATION_VFLIP)
> > {
> > +        return ff_hflip_filter_slice(&s->ctx.flip, in, out, jobnr,
> nb_jobs,
> > +                                     orientation ==
> ORIENTATION_ROTATE180);
> > +    }
> > +    return transpose_filter_slice(ctx, arg, jobnr, nb_jobs);
> > +}
> > +
> >  static int filter_frame(AVFilterLink *inlink, AVFrame *in)
> >  {
> >      AVFilterContext *ctx = inlink->dst;
> > @@ -333,10 +425,29 @@ static int filter_frame(AVFilterLink *inlink,
> AVFrame
> > *in)
> >      AVFilterLink *outlink = ctx->outputs[0];
> >      ThreadData td;
> >      AVFrame *out;
> > +    int orientation = ORIENTATION_NONE;
> >
> >      if (s->passthrough)
> >          return ff_filter_frame(outlink, in);
> >
> > +    if (s->orientation) {
> > +        orientation = get_frame_orientation(ctx, in);
> > +        if (orientation == ORIENTATION_NORMAL) // orientation 'Normal',
> do
> > nothing
> > +            return ff_filter_frame(outlink, in);
> > +
> > +        if (orientation == ORIENTATION_VFLIP) {
> > +            int i;
> > +            for (i = 0; i < 4; i ++) {
> > +                int height = s->ctx.flip.planeheight[i];
> > +                if (in->data[i]) {
> > +                    in->data[i] += (height - 1) * in->linesize[i];
> > +                    in->linesize[i] = -in->linesize[i];
> > +                }
> > +            }
> > +            return ff_filter_frame(outlink, in);
> > +        }
> > +    }
> > +
> >      out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
> >      if (!out) {
> >          av_frame_free(&in);
> > @@ -346,12 +457,14 @@ static int filter_frame(AVFilterLink *inlink,
> AVFrame
> > *in)
> >
> >      if (in->sample_aspect_ratio.num == 0) {
> >          out->sample_aspect_ratio = in->sample_aspect_ratio;
> > -    } else {
> > +    } else if (s->orientation == ORIENTATION_AUTO_TRANSPOSE ||
> > +               orientation > ORIENTATION_VFLIP) { // transpose
> >          out->sample_aspect_ratio.num = in->sample_aspect_ratio.den;
> >          out->sample_aspect_ratio.den = in->sample_aspect_ratio.num;
> >      }
> >
> >      td.in = in, td.out = out;
> > +    td.orientation = orientation;
> >      ctx->internal->execute(ctx, filter_slice, &td, NULL,
> FFMIN(outlink->h,
> > ff_filter_get_nb_threads(ctx)));
> >      av_frame_free(&in);
> >      return ff_filter_frame(outlink, out);
> > @@ -373,6 +486,19 @@ static const AVOption transpose_options[] = {
> >          { "portrait",  "preserve portrait geometry",   0,
> > AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT},  INT_MIN, INT_MAX,
> > FLAGS, "passthrough" },
> >          { "landscape", "preserve landscape geometry",  0,
> > AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX,
> > FLAGS, "passthrough" },
> >
> > +    { "orientation", "apply frame exif orientation",
> > +      OFFSET(orientation), AV_OPT_TYPE_INT, {.i64 = ORIENTATION_NONE },
> > -2, 8, FLAGS, "orientation" },
>
> -2 and 8 are still hardcoded here.


Hi Paul,
I actually explained this in path version 6 and thought it was fine since
no objection.
"I updated the default value type to enum. But I still keep the value range
-2 and 8 as numeric here since I see other options are doing that. Hope it
is fine."
I see other options in the same file like "dir" is doing that, maybe
consistent with them ? what do you think ?

Best Regards,
Jun


>
> +        { "auto_transpose",    "apply transposition if frame's
> orientation
> > value is in range [5,8]",                     0, AV_OPT_TYPE_CONST,
> > {.i64=ORIENTATION_AUTO_TRANSPOSE},    INT_MIN, INT_MAX, FLAGS,
> "orientation"
> > },
> > +        { "auto_flip",         "apply flip if frame's orientation value
> is
> > in range [1,4]",                              0, AV_OPT_TYPE_CONST,
> > {.i64=ORIENTATION_AUTO_FLIP},         INT_MIN, INT_MAX, FLAGS,
> "orientation"
> > },
> > +        { "none",              "apply default transposition, same as
> > dir=cclock_flip",                                   0, AV_OPT_TYPE_CONST,
> > {.i64=ORIENTATION_NONE},              INT_MIN, INT_MAX, FLAGS,
> "orientation"
> > },
> > +        { "normal",            "exif orientation 'Normal', do not apply
> any
> > flip or transposition",                      0, AV_OPT_TYPE_CONST,
> > {.i64=ORIENTATION_NORMAL},            INT_MIN, INT_MAX, FLAGS,
> "orientation"
> > },
> > +        { "hflip",             "exif orientation 'Mirror horizontal',
> apply
> > horizontal flip",                            0, AV_OPT_TYPE_CONST,
> > {.i64=ORIENTATION_HFLIP},             INT_MIN, INT_MAX, FLAGS,
> "orientation"
> > },
> > +        { "rotate180",         "exif orientation 'Rotate 180', apply
> > rotation 180",                                      0, AV_OPT_TYPE_CONST,
> > {.i64=ORIENTATION_ROTATE180},         INT_MIN, INT_MAX, FLAGS,
> "orientation"
> > },
> > +        { "vflip",             "exif orientation 'Mirror vertical',
> apply
> > vertical flip",                                0, AV_OPT_TYPE_CONST,
> > {.i64=ORIENTATION_VFLIP},             INT_MIN, INT_MAX, FLAGS,
> "orientation"
> > },
> > +        { "hflip_rotate270cw", "exif orientation 'Mirror horizontal and
> > rotate 270 CW', same effect as dir=cclock_flip", 0, AV_OPT_TYPE_CONST,
> > {.i64=ORIENTATION_HFLIP_ROTATE270CW}, INT_MIN, INT_MAX, FLAGS,
> "orientation"
> > },
> > +        { "rotate90cw",        "exif orientation 'Rotate 90 CW', same as
> > dir=clock",                                     0, AV_OPT_TYPE_CONST,
> > {.i64=ORIENTATION_ROTATE90CW},        INT_MIN, INT_MAX, FLAGS,
> "orientation"
> > },
> > +        { "hflip_rotate90cw",  "exif orientation 'Mirror horizontal and
> > rotate 90 CW', same effect as dir=clock_flip",   0, AV_OPT_TYPE_CONST,
> > {.i64=ORIENTATION_HFLIP_ROTATE90CW},  INT_MIN, INT_MAX, FLAGS,
> "orientation"
> > },
> > +        { "rotate270",         "exif orientation 'Rotate 270 CW', same
> as
> > dir=cclock",                                   0, AV_OPT_TYPE_CONST,
> > {.i64=ORIENTATION_ROTATE270CW},       INT_MIN, INT_MAX, FLAGS,
> "orientation"
> > },
> >      { NULL }
> >  };
> >
> > --
> > 2.17.1
> >
> > _______________________________________________
> > ffmpeg-devel mailing list
> > ffmpeg-devel@ffmpeg.org
> > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> >
> > To unsubscribe, visit link above, or email
> > ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> To unsubscribe, visit link above, or email
> ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".

On 6/9/19, Jun Li <junli1026@gmail.com> wrote:
> On Sun, Jun 9, 2019 at 12:49 AM Paul B Mahol <onemda@gmail.com> wrote:
>
>> On 6/9/19, Jun Li <junli1026@gmail.com> wrote:
>> > Add exif orientation support and expose an option.
>> > ---
>> >  libavfilter/hflip.h        |   2 +
>> >  libavfilter/transpose.h    |  14 ++++
>> >  libavfilter/vf_hflip.c     |  40 ++++++---
>> >  libavfilter/vf_transpose.c | 168 ++++++++++++++++++++++++++++++++-----
>> >  4 files changed, 192 insertions(+), 32 deletions(-)
>> >
>> > diff --git a/libavfilter/hflip.h b/libavfilter/hflip.h
>> > index 204090dbb4..4e89bae3fc 100644
>> > --- a/libavfilter/hflip.h
>> > +++ b/libavfilter/hflip.h
>> > @@ -35,5 +35,7 @@ typedef struct FlipContext {
>> >
>> >  int ff_hflip_init(FlipContext *s, int step[4], int nb_planes);
>> >  void ff_hflip_init_x86(FlipContext *s, int step[4], int nb_planes);
>> > +int ff_hflip_config_props(FlipContext* s, AVFilterLink *inlink);
>> > +int ff_hflip_filter_slice(FlipContext *s, AVFrame *in, AVFrame *out,
>> > int
>> > job, int nb_jobs, int vlifp);
>> >
>> >  #endif /* AVFILTER_HFLIP_H */
>> > diff --git a/libavfilter/transpose.h b/libavfilter/transpose.h
>> > index aa262b9487..5da08bddc0 100644
>> > --- a/libavfilter/transpose.h
>> > +++ b/libavfilter/transpose.h
>> > @@ -34,4 +34,18 @@ enum TransposeDir {
>> >      TRANSPOSE_VFLIP,
>> >  };
>> >
>> > +enum OrientationType {
>> > +    ORIENTATION_AUTO_TRANSPOSE = -2,
>> > +    ORIENTATION_AUTO_FLIP = -1,
>> > +    ORIENTATION_NONE = 0,
>> > +    ORIENTATION_NORMAL,
>> > +    ORIENTATION_HFLIP,
>> > +    ORIENTATION_ROTATE180,
>> > +    ORIENTATION_VFLIP,
>> > +    ORIENTATION_HFLIP_ROTATE270CW,
>> > +    ORIENTATION_ROTATE90CW,
>> > +    ORIENTATION_HFLIP_ROTATE90CW,
>> > +    ORIENTATION_ROTATE270CW
>> > +};
>> > +
>> >  #endif
>> > diff --git a/libavfilter/vf_hflip.c b/libavfilter/vf_hflip.c
>> > index b77afc77fc..d24ca5c2e7 100644
>> > --- a/libavfilter/vf_hflip.c
>> > +++ b/libavfilter/vf_hflip.c
>> > @@ -125,9 +125,8 @@ static void hflip_qword_c(const uint8_t *ssrc,
>> uint8_t
>> > *ddst, int w)
>> >          dst[j] = src[-j];
>> >  }
>> >
>> > -static int config_props(AVFilterLink *inlink)
>> > +int ff_hflip_config_props(FlipContext* s, AVFilterLink *inlink)
>> >  {
>> > -    FlipContext *s = inlink->dst->priv;
>> >      const AVPixFmtDescriptor *pix_desc =
>> > av_pix_fmt_desc_get(inlink->format);
>> >      const int hsub = pix_desc->log2_chroma_w;
>> >      const int vsub = pix_desc->log2_chroma_h;
>> > @@ -144,6 +143,12 @@ static int config_props(AVFilterLink *inlink)
>> >      return ff_hflip_init(s, s->max_step, nb_planes);
>> >  }
>> >
>> > +static int config_props(AVFilterLink *inlink)
>> > +{
>> > +    FlipContext *s = inlink->dst->priv;
>> > +    return ff_hflip_config_props(s, inlink);
>> > +}
>> > +
>> >  int ff_hflip_init(FlipContext *s, int step[4], int nb_planes)
>> >  {
>> >      int i;
>> > @@ -170,14 +175,10 @@ typedef struct ThreadData {
>> >      AVFrame *in, *out;
>> >  } ThreadData;
>> >
>> > -static int filter_slice(AVFilterContext *ctx, void *arg, int job, int
>> > nb_jobs)
>> > +int ff_hflip_filter_slice(FlipContext *s, AVFrame *in, AVFrame *out,
>> > int
>> > job, int nb_jobs, int vflip)
>> >  {
>> > -    FlipContext *s = ctx->priv;
>> > -    ThreadData *td = arg;
>> > -    AVFrame *in = td->in;
>> > -    AVFrame *out = td->out;
>> >      uint8_t *inrow, *outrow;
>> > -    int i, plane, step;
>> > +    int i, plane, step, outlinesize;
>> >
>> >      for (plane = 0; plane < 4 && in->data[plane] &&
>> > in->linesize[plane];
>> > plane++) {
>> >          const int width  = s->planewidth[plane];
>> > @@ -187,19 +188,36 @@ static int filter_slice(AVFilterContext *ctx, void
>> > *arg, int job, int nb_jobs)
>> >
>> >          step = s->max_step[plane];
>> >
>> > -        outrow = out->data[plane] + start * out->linesize[plane];
>> > -        inrow  = in ->data[plane] + start * in->linesize[plane] +
>> (width -
>> > 1) * step;
>> > +        if (vflip) {
>> > +            outrow = out->data[plane] + (height - start - 1)*
>> > out->linesize[plane];
>> > +            outlinesize = -out->linesize[plane];
>> > +        } else {
>> > +            outrow = out->data[plane] + start * out->linesize[plane];
>> > +            outlinesize = out->linesize[plane];
>> > +        }
>> > +
>> > +        inrow = in->data[plane] + start * in->linesize[plane] +  (width
>> -
>> > 1) * step;
>> > +
>> >          for (i = start; i < end; i++) {
>> >              s->flip_line[plane](inrow, outrow, width);
>> >
>> >              inrow  += in ->linesize[plane];
>> > -            outrow += out->linesize[plane];
>> > +            outrow += outlinesize;
>> >          }
>> >      }
>> >
>> >      return 0;
>> >  }
>> >
>> > +static int filter_slice(AVFilterContext *ctx, void *arg, int job, int
>> > nb_jobs)
>> > +{
>> > +    FlipContext *s = ctx->priv;
>> > +    ThreadData *td = arg;
>> > +    AVFrame *in = td->in;
>> > +    AVFrame *out = td->out;
>> > +    return ff_hflip_filter_slice(s, in, out, job, nb_jobs, 0);
>> > +}
>> > +
>> >  static int filter_frame(AVFilterLink *inlink, AVFrame *in)
>> >  {
>> >      AVFilterContext *ctx  = inlink->dst;
>> > diff --git a/libavfilter/vf_transpose.c b/libavfilter/vf_transpose.c
>> > index dd54947bd9..7a122ba8a9 100644
>> > --- a/libavfilter/vf_transpose.c
>> > +++ b/libavfilter/vf_transpose.c
>> > @@ -39,6 +39,7 @@
>> >  #include "internal.h"
>> >  #include "video.h"
>> >  #include "transpose.h"
>> > +#include "hflip.h"
>> >
>> >  typedef struct TransVtable {
>> >      void (*transpose_8x8)(uint8_t *src, ptrdiff_t src_linesize,
>> > @@ -48,16 +49,22 @@ typedef struct TransVtable {
>> >                              int w, int h);
>> >  } TransVtable;
>> >
>> > -typedef struct TransContext {
>> > -    const AVClass *class;
>> > +typedef struct TransContextData {
>> >      int hsub, vsub;
>> >      int planes;
>> >      int pixsteps[4];
>> > +    TransVtable vtables[4];
>> > +} TransContextData;
>> >
>> > +typedef struct TransContext {
>> > +    const AVClass *class;
>> >      int passthrough;    ///< PassthroughType, landscape passthrough
>> > mode
>> > enabled
>> >      int dir;            ///< TransposeDir
>> > -
>> > -    TransVtable vtables[4];
>> > +    int orientation;    ///< OrientationType
>> > +    union {
>> > +        TransContextData transpose;
>> > +        FlipContext flip;
>> > +    } ctx;
>> >  } TransContext;
>> >
>> >  static int query_formats(AVFilterContext *ctx)
>> > @@ -207,14 +214,18 @@ static int config_props_output(AVFilterLink
>> *outlink)
>> >          s->passthrough = TRANSPOSE_PT_TYPE_NONE;
>> >      }
>> >
>> > -    s->hsub = desc_in->log2_chroma_w;
>> > -    s->vsub = desc_in->log2_chroma_h;
>> > -    s->planes = av_pix_fmt_count_planes(outlink->format);
>> > +    if (s->orientation == ORIENTATION_AUTO_FLIP ||
>> > +       (s->orientation > ORIENTATION_NONE && s->orientation <=
>> > ORIENTATION_VFLIP))
>> > +        return ff_hflip_config_props(&(s->ctx.flip), inlink);
>> > +
>> > +    s->ctx.transpose.hsub = desc_in->log2_chroma_w;
>> > +    s->ctx.transpose.vsub = desc_in->log2_chroma_h;
>> > +    s->ctx.transpose.planes = av_pix_fmt_count_planes(outlink->format);
>> >
>> >      av_assert0(desc_in->nb_components == desc_out->nb_components);
>> >
>> >
>> > -    av_image_fill_max_pixsteps(s->pixsteps, NULL, desc_out);
>> > +    av_image_fill_max_pixsteps(s->ctx.transpose.pixsteps, NULL,
>> desc_out);
>> >
>> >      outlink->w = inlink->h;
>> >      outlink->h = inlink->w;
>> > @@ -226,10 +237,10 @@ static int config_props_output(AVFilterLink
>> *outlink)
>> >          outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
>> >
>> >      for (int i = 0; i < 4; i++) {
>> > -        TransVtable *v = &s->vtables[i];
>> > -        switch (s->pixsteps[i]) {
>> > +        TransVtable *v = &s->ctx.transpose.vtables[i];
>> > +        switch (s->ctx.transpose.pixsteps[i]) {
>> >          case 1: v->transpose_block = transpose_block_8_c;
>> > -                v->transpose_8x8   = transpose_8x8_8_c;  break;
>> > +                v->transpose_8x8   = transpose_8x8_8_c; break;
>> >          case 2: v->transpose_block = transpose_block_16_c;
>> >                  v->transpose_8x8   = transpose_8x8_16_c; break;
>> >          case 3: v->transpose_block = transpose_block_24_c;
>> > @@ -262,21 +273,69 @@ static AVFrame *get_video_buffer(AVFilterLink
>> *inlink,
>> > int w, int h)
>> >
>> >  typedef struct ThreadData {
>> >      AVFrame *in, *out;
>> > +    int orientation;
>> >  } ThreadData;
>> >
>> > -static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr,
>> > -                        int nb_jobs)
>> > +static int get_frame_orientation(AVFilterContext *ctx, const AVFrame
>> > *frame)
>> > +{
>> > +    TransContext *s = ctx->priv;
>> > +    AVDictionaryEntry *entry = NULL;
>> > +    int orientation = ORIENTATION_NONE;
>> > +
>> > +    if (s->orientation >= ORIENTATION_NONE)
>> > +        return s->orientation;
>> > +
>> > +    // read exif orientation data
>> > +    entry = av_dict_get(frame->metadata, "Orientation", NULL, 0);
>> > +    if (entry && entry->value)
>> > +        orientation = atoi(entry->value);
>> > +
>> > +    // check frame orientation validity
>> > +    if (orientation < ORIENTATION_NORMAL ||
>> > +        orientation > ORIENTATION_ROTATE270CW) {
>> > +        // frame orientation is invalid or empty, we have to guess one.
>> > +        av_log(ctx, AV_LOG_WARNING, "Frame orientation is either empty
>> or
>> > invalid.\n");
>> > +        return s->orientation == ORIENTATION_AUTO_FLIP ?
>> > +               ORIENTATION_NORMAL : ORIENTATION_HFLIP_ROTATE270CW;
>> > +    }
>> > +
>> > +    // check conflict between frame orientation and passed-in
>> orientation
>> > option
>> > +    if (s->orientation == ORIENTATION_AUTO_FLIP &&
>> > +        orientation > ORIENTATION_VFLIP) {
>> > +        av_log(ctx, AV_LOG_WARNING,
>> > +               "Found valid orientation value: %i, but auto-flip only
>> cover
>> > range [1, 4]. Set to default value 1(ORIENTATION_NONE).\n",
>> > +               orientation);
>> > +        // conflict happens, return the min value of orientation range
>> > +        return ORIENTATION_NORMAL;
>> > +    }
>> > +
>> > +    // check conflict between frame orientation and passed-in
>> orientation
>> > option
>> > +    if (s->orientation == ORIENTATION_AUTO_TRANSPOSE &&
>> > +        orientation <= ORIENTATION_VFLIP) {
>> > +        av_log(ctx, AV_LOG_WARNING,
>> > +               "Found valid orientation value: %i, but auto-transpose
>> only
>> > cover range [5, 8]. Set to default value
>> > 5(ORIENTATION_HFLIP_ROTATE270CW).\n",
>> > +               orientation);
>> > +        // conflict happens, return the min value of orientation range,
>> > same effect as dir=0
>> > +        return ORIENTATION_HFLIP_ROTATE270CW;
>> > +    }
>> > +
>> > +    return orientation;
>> > +}
>> > +
>> > +static int transpose_filter_slice(AVFilterContext *ctx, void *arg, int
>> > jobnr, int nb_jobs)
>> >  {
>> >      TransContext *s = ctx->priv;
>> >      ThreadData *td = arg;
>> >      AVFrame *out = td->out;
>> >      AVFrame *in = td->in;
>> > +    TransContextData *c = &(s->ctx.transpose);
>> > +    int orientation = td->orientation;
>> >      int plane;
>> >
>> > -    for (plane = 0; plane < s->planes; plane++) {
>> > -        int hsub    = plane == 1 || plane == 2 ? s->hsub : 0;
>> > -        int vsub    = plane == 1 || plane == 2 ? s->vsub : 0;
>> > -        int pixstep = s->pixsteps[plane];
>> > +    for (plane = 0; plane < c->planes; plane++) {
>> > +        int hsub    = plane == 1 || plane == 2 ? c->hsub : 0;
>> > +        int vsub    = plane == 1 || plane == 2 ? c->vsub : 0;
>> > +        int pixstep = c->pixsteps[plane];
>> >          int inh     = AV_CEIL_RSHIFT(in->height, vsub);
>> >          int outw    = AV_CEIL_RSHIFT(out->width,  hsub);
>> >          int outh    = AV_CEIL_RSHIFT(out->height, vsub);
>> > @@ -285,19 +344,36 @@ static int filter_slice(AVFilterContext *ctx, void
>> > *arg, int jobnr,
>> >          uint8_t *dst, *src;
>> >          int dstlinesize, srclinesize;
>> >          int x, y;
>> > -        TransVtable *v = &s->vtables[plane];
>> > +        int dir = s->dir;
>> > +        TransVtable *v = &c->vtables[plane];
>> >
>> >          dstlinesize = out->linesize[plane];
>> >          dst         = out->data[plane] + start * dstlinesize;
>> >          src         = in->data[plane];
>> >          srclinesize = in->linesize[plane];
>> > +        switch (orientation) {
>> > +            case ORIENTATION_HFLIP_ROTATE270CW:
>> > +                dir = 0; // mirror horizontal and rotate 270 CW, same
>> > as
>> > dir=cclock_flip
>> > +                break;
>> > +            case ORIENTATION_ROTATE90CW:
>> > +                dir = 1; // rotate 90 CW, same as dir=clock
>> > +                break;
>> > +            case ORIENTATION_HFLIP_ROTATE90CW:
>> > +                dir = 3; // mirror horizontal and rotate 90 CW, same as
>> > dir=clock_flip
>> > +                break;
>> > +            case ORIENTATION_ROTATE270CW:
>> > +                dir = 2; // rotate 270 CW, same as dir=cclock
>> > +                break;
>> > +            default:
>> > +                break;
>> > +        }
>> >
>> > -        if (s->dir & 1) {
>> > +        if (dir & 1) {
>> >              src         += in->linesize[plane] * (inh - 1);
>> >              srclinesize *= -1;
>> >          }
>> >
>> > -        if (s->dir & 2) {
>> > +        if (dir & 2) {
>> >              dst          = out->data[plane] + dstlinesize * (outh -
>> start -
>> > 1);
>> >              dstlinesize *= -1;
>> >          }
>> > @@ -326,6 +402,22 @@ static int filter_slice(AVFilterContext *ctx, void
>> > *arg, int jobnr,
>> >      return 0;
>> >  }
>> >
>> > +static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr,
>> > +                        int nb_jobs)
>> > +{
>> > +    TransContext *s = ctx->priv;
>> > +    ThreadData *td = arg;
>> > +    AVFrame *out = td->out;
>> > +    AVFrame *in = td->in;
>> > +    int orientation = td->orientation;
>> > +
>> > +    if (orientation > ORIENTATION_NONE && orientation <=
>> ORIENTATION_VFLIP)
>> > {
>> > +        return ff_hflip_filter_slice(&s->ctx.flip, in, out, jobnr,
>> nb_jobs,
>> > +                                     orientation ==
>> ORIENTATION_ROTATE180);
>> > +    }
>> > +    return transpose_filter_slice(ctx, arg, jobnr, nb_jobs);
>> > +}
>> > +
>> >  static int filter_frame(AVFilterLink *inlink, AVFrame *in)
>> >  {
>> >      AVFilterContext *ctx = inlink->dst;
>> > @@ -333,10 +425,29 @@ static int filter_frame(AVFilterLink *inlink,
>> AVFrame
>> > *in)
>> >      AVFilterLink *outlink = ctx->outputs[0];
>> >      ThreadData td;
>> >      AVFrame *out;
>> > +    int orientation = ORIENTATION_NONE;
>> >
>> >      if (s->passthrough)
>> >          return ff_filter_frame(outlink, in);
>> >
>> > +    if (s->orientation) {
>> > +        orientation = get_frame_orientation(ctx, in);
>> > +        if (orientation == ORIENTATION_NORMAL) // orientation 'Normal',
>> do
>> > nothing
>> > +            return ff_filter_frame(outlink, in);
>> > +
>> > +        if (orientation == ORIENTATION_VFLIP) {
>> > +            int i;
>> > +            for (i = 0; i < 4; i ++) {
>> > +                int height = s->ctx.flip.planeheight[i];
>> > +                if (in->data[i]) {
>> > +                    in->data[i] += (height - 1) * in->linesize[i];
>> > +                    in->linesize[i] = -in->linesize[i];
>> > +                }
>> > +            }
>> > +            return ff_filter_frame(outlink, in);
>> > +        }
>> > +    }
>> > +
>> >      out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
>> >      if (!out) {
>> >          av_frame_free(&in);
>> > @@ -346,12 +457,14 @@ static int filter_frame(AVFilterLink *inlink,
>> AVFrame
>> > *in)
>> >
>> >      if (in->sample_aspect_ratio.num == 0) {
>> >          out->sample_aspect_ratio = in->sample_aspect_ratio;
>> > -    } else {
>> > +    } else if (s->orientation == ORIENTATION_AUTO_TRANSPOSE ||
>> > +               orientation > ORIENTATION_VFLIP) { // transpose
>> >          out->sample_aspect_ratio.num = in->sample_aspect_ratio.den;
>> >          out->sample_aspect_ratio.den = in->sample_aspect_ratio.num;
>> >      }
>> >
>> >      td.in = in, td.out = out;
>> > +    td.orientation = orientation;
>> >      ctx->internal->execute(ctx, filter_slice, &td, NULL,
>> FFMIN(outlink->h,
>> > ff_filter_get_nb_threads(ctx)));
>> >      av_frame_free(&in);
>> >      return ff_filter_frame(outlink, out);
>> > @@ -373,6 +486,19 @@ static const AVOption transpose_options[] = {
>> >          { "portrait",  "preserve portrait geometry",   0,
>> > AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT},  INT_MIN, INT_MAX,
>> > FLAGS, "passthrough" },
>> >          { "landscape", "preserve landscape geometry",  0,
>> > AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX,
>> > FLAGS, "passthrough" },
>> >
>> > +    { "orientation", "apply frame exif orientation",
>> > +      OFFSET(orientation), AV_OPT_TYPE_INT, {.i64 = ORIENTATION_NONE },
>> > -2, 8, FLAGS, "orientation" },
>>
>> -2 and 8 are still hardcoded here.
>
>
> Hi Paul,
> I actually explained this in path version 6 and thought it was fine since
> no objection.
> "I updated the default value type to enum. But I still keep the value range
> -2 and 8 as numeric here since I see other options are doing that. Hope it
> is fine."
> I see other options in the same file like "dir" is doing that, maybe
> consistent with them ? what do you think ?

Unacceptable explanation. The code is wrong. Making it consistent with
wrong code will not make it better.

>
> Best Regards,
> Jun
>
>
>>
>> +        { "auto_transpose",    "apply transposition if frame's
>> orientation
>> > value is in range [5,8]",                     0, AV_OPT_TYPE_CONST,
>> > {.i64=ORIENTATION_AUTO_TRANSPOSE},    INT_MIN, INT_MAX, FLAGS,
>> "orientation"
>> > },
>> > +        { "auto_flip",         "apply flip if frame's orientation value
>> is
>> > in range [1,4]",                              0, AV_OPT_TYPE_CONST,
>> > {.i64=ORIENTATION_AUTO_FLIP},         INT_MIN, INT_MAX, FLAGS,
>> "orientation"
>> > },
>> > +        { "none",              "apply default transposition, same as
>> > dir=cclock_flip",                                   0,
>> > AV_OPT_TYPE_CONST,
>> > {.i64=ORIENTATION_NONE},              INT_MIN, INT_MAX, FLAGS,
>> "orientation"
>> > },
>> > +        { "normal",            "exif orientation 'Normal', do not apply
>> any
>> > flip or transposition",                      0, AV_OPT_TYPE_CONST,
>> > {.i64=ORIENTATION_NORMAL},            INT_MIN, INT_MAX, FLAGS,
>> "orientation"
>> > },
>> > +        { "hflip",             "exif orientation 'Mirror horizontal',
>> apply
>> > horizontal flip",                            0, AV_OPT_TYPE_CONST,
>> > {.i64=ORIENTATION_HFLIP},             INT_MIN, INT_MAX, FLAGS,
>> "orientation"
>> > },
>> > +        { "rotate180",         "exif orientation 'Rotate 180', apply
>> > rotation 180",                                      0,
>> > AV_OPT_TYPE_CONST,
>> > {.i64=ORIENTATION_ROTATE180},         INT_MIN, INT_MAX, FLAGS,
>> "orientation"
>> > },
>> > +        { "vflip",             "exif orientation 'Mirror vertical',
>> apply
>> > vertical flip",                                0, AV_OPT_TYPE_CONST,
>> > {.i64=ORIENTATION_VFLIP},             INT_MIN, INT_MAX, FLAGS,
>> "orientation"
>> > },
>> > +        { "hflip_rotate270cw", "exif orientation 'Mirror horizontal and
>> > rotate 270 CW', same effect as dir=cclock_flip", 0, AV_OPT_TYPE_CONST,
>> > {.i64=ORIENTATION_HFLIP_ROTATE270CW}, INT_MIN, INT_MAX, FLAGS,
>> "orientation"
>> > },
>> > +        { "rotate90cw",        "exif orientation 'Rotate 90 CW', same
>> > as
>> > dir=clock",                                     0, AV_OPT_TYPE_CONST,
>> > {.i64=ORIENTATION_ROTATE90CW},        INT_MIN, INT_MAX, FLAGS,
>> "orientation"
>> > },
>> > +        { "hflip_rotate90cw",  "exif orientation 'Mirror horizontal and
>> > rotate 90 CW', same effect as dir=clock_flip",   0, AV_OPT_TYPE_CONST,
>> > {.i64=ORIENTATION_HFLIP_ROTATE90CW},  INT_MIN, INT_MAX, FLAGS,
>> "orientation"
>> > },
>> > +        { "rotate270",         "exif orientation 'Rotate 270 CW', same
>> as
>> > dir=cclock",                                   0, AV_OPT_TYPE_CONST,
>> > {.i64=ORIENTATION_ROTATE270CW},       INT_MIN, INT_MAX, FLAGS,
>> "orientation"
>> > },
>> >      { NULL }
>> >  };
>> >
>> > --
>> > 2.17.1
>> >
>> > _______________________________________________
>> > ffmpeg-devel mailing list
>> > ffmpeg-devel@ffmpeg.org
>> > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>> >
>> > To unsubscribe, visit link above, or email
>> > ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
>> _______________________________________________
>> ffmpeg-devel mailing list
>> ffmpeg-devel@ffmpeg.org
>> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>>
>> To unsubscribe, visit link above, or email
>> ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> To unsubscribe, visit link above, or email
> ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".

On Sun, Jun 9, 2019 at 1:52 AM Paul B Mahol <onemda@gmail.com> wrote:

> On 6/9/19, Jun Li <junli1026@gmail.com> wrote:
> > On Sun, Jun 9, 2019 at 12:49 AM Paul B Mahol <onemda@gmail.com> wrote:
> >
> >> On 6/9/19, Jun Li <junli1026@gmail.com> wrote:
> >> > Add exif orientation support and expose an option.
> >> > ---
> >> >  libavfilter/hflip.h        |   2 +
> >> >  libavfilter/transpose.h    |  14 ++++
> >> >  libavfilter/vf_hflip.c     |  40 ++++++---
> >> >  libavfilter/vf_transpose.c | 168
> ++++++++++++++++++++++++++++++++-----
> >> >  4 files changed, 192 insertions(+), 32 deletions(-)
> >> >
> >> > diff --git a/libavfilter/hflip.h b/libavfilter/hflip.h
> >> > index 204090dbb4..4e89bae3fc 100644
> >> > --- a/libavfilter/hflip.h
> >> > +++ b/libavfilter/hflip.h
> >> > @@ -35,5 +35,7 @@ typedef struct FlipContext {
> >> >
> >> >  int ff_hflip_init(FlipContext *s, int step[4], int nb_planes);
> >> >  void ff_hflip_init_x86(FlipContext *s, int step[4], int nb_planes);
> >> > +int ff_hflip_config_props(FlipContext* s, AVFilterLink *inlink);
> >> > +int ff_hflip_filter_slice(FlipContext *s, AVFrame *in, AVFrame *out,
> >> > int
> >> > job, int nb_jobs, int vlifp);
> >> >
> >> >  #endif /* AVFILTER_HFLIP_H */
> >> > diff --git a/libavfilter/transpose.h b/libavfilter/transpose.h
> >> > index aa262b9487..5da08bddc0 100644
> >> > --- a/libavfilter/transpose.h
> >> > +++ b/libavfilter/transpose.h
> >> > @@ -34,4 +34,18 @@ enum TransposeDir {
> >> >      TRANSPOSE_VFLIP,
> >> >  };
> >> >
> >> > +enum OrientationType {
> >> > +    ORIENTATION_AUTO_TRANSPOSE = -2,
> >> > +    ORIENTATION_AUTO_FLIP = -1,
> >> > +    ORIENTATION_NONE = 0,
> >> > +    ORIENTATION_NORMAL,
> >> > +    ORIENTATION_HFLIP,
> >> > +    ORIENTATION_ROTATE180,
> >> > +    ORIENTATION_VFLIP,
> >> > +    ORIENTATION_HFLIP_ROTATE270CW,
> >> > +    ORIENTATION_ROTATE90CW,
> >> > +    ORIENTATION_HFLIP_ROTATE90CW,
> >> > +    ORIENTATION_ROTATE270CW
> >> > +};
> >> > +
> >> >  #endif
> >> > diff --git a/libavfilter/vf_hflip.c b/libavfilter/vf_hflip.c
> >> > index b77afc77fc..d24ca5c2e7 100644
> >> > --- a/libavfilter/vf_hflip.c
> >> > +++ b/libavfilter/vf_hflip.c
> >> > @@ -125,9 +125,8 @@ static void hflip_qword_c(const uint8_t *ssrc,
> >> uint8_t
> >> > *ddst, int w)
> >> >          dst[j] = src[-j];
> >> >  }
> >> >
> >> > -static int config_props(AVFilterLink *inlink)
> >> > +int ff_hflip_config_props(FlipContext* s, AVFilterLink *inlink)
> >> >  {
> >> > -    FlipContext *s = inlink->dst->priv;
> >> >      const AVPixFmtDescriptor *pix_desc =
> >> > av_pix_fmt_desc_get(inlink->format);
> >> >      const int hsub = pix_desc->log2_chroma_w;
> >> >      const int vsub = pix_desc->log2_chroma_h;
> >> > @@ -144,6 +143,12 @@ static int config_props(AVFilterLink *inlink)
> >> >      return ff_hflip_init(s, s->max_step, nb_planes);
> >> >  }
> >> >
> >> > +static int config_props(AVFilterLink *inlink)
> >> > +{
> >> > +    FlipContext *s = inlink->dst->priv;
> >> > +    return ff_hflip_config_props(s, inlink);
> >> > +}
> >> > +
> >> >  int ff_hflip_init(FlipContext *s, int step[4], int nb_planes)
> >> >  {
> >> >      int i;
> >> > @@ -170,14 +175,10 @@ typedef struct ThreadData {
> >> >      AVFrame *in, *out;
> >> >  } ThreadData;
> >> >
> >> > -static int filter_slice(AVFilterContext *ctx, void *arg, int job, int
> >> > nb_jobs)
> >> > +int ff_hflip_filter_slice(FlipContext *s, AVFrame *in, AVFrame *out,
> >> > int
> >> > job, int nb_jobs, int vflip)
> >> >  {
> >> > -    FlipContext *s = ctx->priv;
> >> > -    ThreadData *td = arg;
> >> > -    AVFrame *in = td->in;
> >> > -    AVFrame *out = td->out;
> >> >      uint8_t *inrow, *outrow;
> >> > -    int i, plane, step;
> >> > +    int i, plane, step, outlinesize;
> >> >
> >> >      for (plane = 0; plane < 4 && in->data[plane] &&
> >> > in->linesize[plane];
> >> > plane++) {
> >> >          const int width  = s->planewidth[plane];
> >> > @@ -187,19 +188,36 @@ static int filter_slice(AVFilterContext *ctx,
> void
> >> > *arg, int job, int nb_jobs)
> >> >
> >> >          step = s->max_step[plane];
> >> >
> >> > -        outrow = out->data[plane] + start * out->linesize[plane];
> >> > -        inrow  = in ->data[plane] + start * in->linesize[plane] +
> >> (width -
> >> > 1) * step;
> >> > +        if (vflip) {
> >> > +            outrow = out->data[plane] + (height - start - 1)*
> >> > out->linesize[plane];
> >> > +            outlinesize = -out->linesize[plane];
> >> > +        } else {
> >> > +            outrow = out->data[plane] + start * out->linesize[plane];
> >> > +            outlinesize = out->linesize[plane];
> >> > +        }
> >> > +
> >> > +        inrow = in->data[plane] + start * in->linesize[plane] +
> (width
> >> -
> >> > 1) * step;
> >> > +
> >> >          for (i = start; i < end; i++) {
> >> >              s->flip_line[plane](inrow, outrow, width);
> >> >
> >> >              inrow  += in ->linesize[plane];
> >> > -            outrow += out->linesize[plane];
> >> > +            outrow += outlinesize;
> >> >          }
> >> >      }
> >> >
> >> >      return 0;
> >> >  }
> >> >
> >> > +static int filter_slice(AVFilterContext *ctx, void *arg, int job, int
> >> > nb_jobs)
> >> > +{
> >> > +    FlipContext *s = ctx->priv;
> >> > +    ThreadData *td = arg;
> >> > +    AVFrame *in = td->in;
> >> > +    AVFrame *out = td->out;
> >> > +    return ff_hflip_filter_slice(s, in, out, job, nb_jobs, 0);
> >> > +}
> >> > +
> >> >  static int filter_frame(AVFilterLink *inlink, AVFrame *in)
> >> >  {
> >> >      AVFilterContext *ctx  = inlink->dst;
> >> > diff --git a/libavfilter/vf_transpose.c b/libavfilter/vf_transpose.c
> >> > index dd54947bd9..7a122ba8a9 100644
> >> > --- a/libavfilter/vf_transpose.c
> >> > +++ b/libavfilter/vf_transpose.c
> >> > @@ -39,6 +39,7 @@
> >> >  #include "internal.h"
> >> >  #include "video.h"
> >> >  #include "transpose.h"
> >> > +#include "hflip.h"
> >> >
> >> >  typedef struct TransVtable {
> >> >      void (*transpose_8x8)(uint8_t *src, ptrdiff_t src_linesize,
> >> > @@ -48,16 +49,22 @@ typedef struct TransVtable {
> >> >                              int w, int h);
> >> >  } TransVtable;
> >> >
> >> > -typedef struct TransContext {
> >> > -    const AVClass *class;
> >> > +typedef struct TransContextData {
> >> >      int hsub, vsub;
> >> >      int planes;
> >> >      int pixsteps[4];
> >> > +    TransVtable vtables[4];
> >> > +} TransContextData;
> >> >
> >> > +typedef struct TransContext {
> >> > +    const AVClass *class;
> >> >      int passthrough;    ///< PassthroughType, landscape passthrough
> >> > mode
> >> > enabled
> >> >      int dir;            ///< TransposeDir
> >> > -
> >> > -    TransVtable vtables[4];
> >> > +    int orientation;    ///< OrientationType
> >> > +    union {
> >> > +        TransContextData transpose;
> >> > +        FlipContext flip;
> >> > +    } ctx;
> >> >  } TransContext;
> >> >
> >> >  static int query_formats(AVFilterContext *ctx)
> >> > @@ -207,14 +214,18 @@ static int config_props_output(AVFilterLink
> >> *outlink)
> >> >          s->passthrough = TRANSPOSE_PT_TYPE_NONE;
> >> >      }
> >> >
> >> > -    s->hsub = desc_in->log2_chroma_w;
> >> > -    s->vsub = desc_in->log2_chroma_h;
> >> > -    s->planes = av_pix_fmt_count_planes(outlink->format);
> >> > +    if (s->orientation == ORIENTATION_AUTO_FLIP ||
> >> > +       (s->orientation > ORIENTATION_NONE && s->orientation <=
> >> > ORIENTATION_VFLIP))
> >> > +        return ff_hflip_config_props(&(s->ctx.flip), inlink);
> >> > +
> >> > +    s->ctx.transpose.hsub = desc_in->log2_chroma_w;
> >> > +    s->ctx.transpose.vsub = desc_in->log2_chroma_h;
> >> > +    s->ctx.transpose.planes =
> av_pix_fmt_count_planes(outlink->format);
> >> >
> >> >      av_assert0(desc_in->nb_components == desc_out->nb_components);
> >> >
> >> >
> >> > -    av_image_fill_max_pixsteps(s->pixsteps, NULL, desc_out);
> >> > +    av_image_fill_max_pixsteps(s->ctx.transpose.pixsteps, NULL,
> >> desc_out);
> >> >
> >> >      outlink->w = inlink->h;
> >> >      outlink->h = inlink->w;
> >> > @@ -226,10 +237,10 @@ static int config_props_output(AVFilterLink
> >> *outlink)
> >> >          outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
> >> >
> >> >      for (int i = 0; i < 4; i++) {
> >> > -        TransVtable *v = &s->vtables[i];
> >> > -        switch (s->pixsteps[i]) {
> >> > +        TransVtable *v = &s->ctx.transpose.vtables[i];
> >> > +        switch (s->ctx.transpose.pixsteps[i]) {
> >> >          case 1: v->transpose_block = transpose_block_8_c;
> >> > -                v->transpose_8x8   = transpose_8x8_8_c;  break;
> >> > +                v->transpose_8x8   = transpose_8x8_8_c; break;
> >> >          case 2: v->transpose_block = transpose_block_16_c;
> >> >                  v->transpose_8x8   = transpose_8x8_16_c; break;
> >> >          case 3: v->transpose_block = transpose_block_24_c;
> >> > @@ -262,21 +273,69 @@ static AVFrame *get_video_buffer(AVFilterLink
> >> *inlink,
> >> > int w, int h)
> >> >
> >> >  typedef struct ThreadData {
> >> >      AVFrame *in, *out;
> >> > +    int orientation;
> >> >  } ThreadData;
> >> >
> >> > -static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr,
> >> > -                        int nb_jobs)
> >> > +static int get_frame_orientation(AVFilterContext *ctx, const AVFrame
> >> > *frame)
> >> > +{
> >> > +    TransContext *s = ctx->priv;
> >> > +    AVDictionaryEntry *entry = NULL;
> >> > +    int orientation = ORIENTATION_NONE;
> >> > +
> >> > +    if (s->orientation >= ORIENTATION_NONE)
> >> > +        return s->orientation;
> >> > +
> >> > +    // read exif orientation data
> >> > +    entry = av_dict_get(frame->metadata, "Orientation", NULL, 0);
> >> > +    if (entry && entry->value)
> >> > +        orientation = atoi(entry->value);
> >> > +
> >> > +    // check frame orientation validity
> >> > +    if (orientation < ORIENTATION_NORMAL ||
> >> > +        orientation > ORIENTATION_ROTATE270CW) {
> >> > +        // frame orientation is invalid or empty, we have to guess
> one.
> >> > +        av_log(ctx, AV_LOG_WARNING, "Frame orientation is either
> empty
> >> or
> >> > invalid.\n");
> >> > +        return s->orientation == ORIENTATION_AUTO_FLIP ?
> >> > +               ORIENTATION_NORMAL : ORIENTATION_HFLIP_ROTATE270CW;
> >> > +    }
> >> > +
> >> > +    // check conflict between frame orientation and passed-in
> >> orientation
> >> > option
> >> > +    if (s->orientation == ORIENTATION_AUTO_FLIP &&
> >> > +        orientation > ORIENTATION_VFLIP) {
> >> > +        av_log(ctx, AV_LOG_WARNING,
> >> > +               "Found valid orientation value: %i, but auto-flip only
> >> cover
> >> > range [1, 4]. Set to default value 1(ORIENTATION_NONE).\n",
> >> > +               orientation);
> >> > +        // conflict happens, return the min value of orientation
> range
> >> > +        return ORIENTATION_NORMAL;
> >> > +    }
> >> > +
> >> > +    // check conflict between frame orientation and passed-in
> >> orientation
> >> > option
> >> > +    if (s->orientation == ORIENTATION_AUTO_TRANSPOSE &&
> >> > +        orientation <= ORIENTATION_VFLIP) {
> >> > +        av_log(ctx, AV_LOG_WARNING,
> >> > +               "Found valid orientation value: %i, but auto-transpose
> >> only
> >> > cover range [5, 8]. Set to default value
> >> > 5(ORIENTATION_HFLIP_ROTATE270CW).\n",
> >> > +               orientation);
> >> > +        // conflict happens, return the min value of orientation
> range,
> >> > same effect as dir=0
> >> > +        return ORIENTATION_HFLIP_ROTATE270CW;
> >> > +    }
> >> > +
> >> > +    return orientation;
> >> > +}
> >> > +
> >> > +static int transpose_filter_slice(AVFilterContext *ctx, void *arg,
> int
> >> > jobnr, int nb_jobs)
> >> >  {
> >> >      TransContext *s = ctx->priv;
> >> >      ThreadData *td = arg;
> >> >      AVFrame *out = td->out;
> >> >      AVFrame *in = td->in;
> >> > +    TransContextData *c = &(s->ctx.transpose);
> >> > +    int orientation = td->orientation;
> >> >      int plane;
> >> >
> >> > -    for (plane = 0; plane < s->planes; plane++) {
> >> > -        int hsub    = plane == 1 || plane == 2 ? s->hsub : 0;
> >> > -        int vsub    = plane == 1 || plane == 2 ? s->vsub : 0;
> >> > -        int pixstep = s->pixsteps[plane];
> >> > +    for (plane = 0; plane < c->planes; plane++) {
> >> > +        int hsub    = plane == 1 || plane == 2 ? c->hsub : 0;
> >> > +        int vsub    = plane == 1 || plane == 2 ? c->vsub : 0;
> >> > +        int pixstep = c->pixsteps[plane];
> >> >          int inh     = AV_CEIL_RSHIFT(in->height, vsub);
> >> >          int outw    = AV_CEIL_RSHIFT(out->width,  hsub);
> >> >          int outh    = AV_CEIL_RSHIFT(out->height, vsub);
> >> > @@ -285,19 +344,36 @@ static int filter_slice(AVFilterContext *ctx,
> void
> >> > *arg, int jobnr,
> >> >          uint8_t *dst, *src;
> >> >          int dstlinesize, srclinesize;
> >> >          int x, y;
> >> > -        TransVtable *v = &s->vtables[plane];
> >> > +        int dir = s->dir;
> >> > +        TransVtable *v = &c->vtables[plane];
> >> >
> >> >          dstlinesize = out->linesize[plane];
> >> >          dst         = out->data[plane] + start * dstlinesize;
> >> >          src         = in->data[plane];
> >> >          srclinesize = in->linesize[plane];
> >> > +        switch (orientation) {
> >> > +            case ORIENTATION_HFLIP_ROTATE270CW:
> >> > +                dir = 0; // mirror horizontal and rotate 270 CW, same
> >> > as
> >> > dir=cclock_flip
> >> > +                break;
> >> > +            case ORIENTATION_ROTATE90CW:
> >> > +                dir = 1; // rotate 90 CW, same as dir=clock
> >> > +                break;
> >> > +            case ORIENTATION_HFLIP_ROTATE90CW:
> >> > +                dir = 3; // mirror horizontal and rotate 90 CW, same
> as
> >> > dir=clock_flip
> >> > +                break;
> >> > +            case ORIENTATION_ROTATE270CW:
> >> > +                dir = 2; // rotate 270 CW, same as dir=cclock
> >> > +                break;
> >> > +            default:
> >> > +                break;
> >> > +        }
> >> >
> >> > -        if (s->dir & 1) {
> >> > +        if (dir & 1) {
> >> >              src         += in->linesize[plane] * (inh - 1);
> >> >              srclinesize *= -1;
> >> >          }
> >> >
> >> > -        if (s->dir & 2) {
> >> > +        if (dir & 2) {
> >> >              dst          = out->data[plane] + dstlinesize * (outh -
> >> start -
> >> > 1);
> >> >              dstlinesize *= -1;
> >> >          }
> >> > @@ -326,6 +402,22 @@ static int filter_slice(AVFilterContext *ctx,
> void
> >> > *arg, int jobnr,
> >> >      return 0;
> >> >  }
> >> >
> >> > +static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr,
> >> > +                        int nb_jobs)
> >> > +{
> >> > +    TransContext *s = ctx->priv;
> >> > +    ThreadData *td = arg;
> >> > +    AVFrame *out = td->out;
> >> > +    AVFrame *in = td->in;
> >> > +    int orientation = td->orientation;
> >> > +
> >> > +    if (orientation > ORIENTATION_NONE && orientation <=
> >> ORIENTATION_VFLIP)
> >> > {
> >> > +        return ff_hflip_filter_slice(&s->ctx.flip, in, out, jobnr,
> >> nb_jobs,
> >> > +                                     orientation ==
> >> ORIENTATION_ROTATE180);
> >> > +    }
> >> > +    return transpose_filter_slice(ctx, arg, jobnr, nb_jobs);
> >> > +}
> >> > +
> >> >  static int filter_frame(AVFilterLink *inlink, AVFrame *in)
> >> >  {
> >> >      AVFilterContext *ctx = inlink->dst;
> >> > @@ -333,10 +425,29 @@ static int filter_frame(AVFilterLink *inlink,
> >> AVFrame
> >> > *in)
> >> >      AVFilterLink *outlink = ctx->outputs[0];
> >> >      ThreadData td;
> >> >      AVFrame *out;
> >> > +    int orientation = ORIENTATION_NONE;
> >> >
> >> >      if (s->passthrough)
> >> >          return ff_filter_frame(outlink, in);
> >> >
> >> > +    if (s->orientation) {
> >> > +        orientation = get_frame_orientation(ctx, in);
> >> > +        if (orientation == ORIENTATION_NORMAL) // orientation
> 'Normal',
> >> do
> >> > nothing
> >> > +            return ff_filter_frame(outlink, in);
> >> > +
> >> > +        if (orientation == ORIENTATION_VFLIP) {
> >> > +            int i;
> >> > +            for (i = 0; i < 4; i ++) {
> >> > +                int height = s->ctx.flip.planeheight[i];
> >> > +                if (in->data[i]) {
> >> > +                    in->data[i] += (height - 1) * in->linesize[i];
> >> > +                    in->linesize[i] = -in->linesize[i];
> >> > +                }
> >> > +            }
> >> > +            return ff_filter_frame(outlink, in);
> >> > +        }
> >> > +    }
> >> > +
> >> >      out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
> >> >      if (!out) {
> >> >          av_frame_free(&in);
> >> > @@ -346,12 +457,14 @@ static int filter_frame(AVFilterLink *inlink,
> >> AVFrame
> >> > *in)
> >> >
> >> >      if (in->sample_aspect_ratio.num == 0) {
> >> >          out->sample_aspect_ratio = in->sample_aspect_ratio;
> >> > -    } else {
> >> > +    } else if (s->orientation == ORIENTATION_AUTO_TRANSPOSE ||
> >> > +               orientation > ORIENTATION_VFLIP) { // transpose
> >> >          out->sample_aspect_ratio.num = in->sample_aspect_ratio.den;
> >> >          out->sample_aspect_ratio.den = in->sample_aspect_ratio.num;
> >> >      }
> >> >
> >> >      td.in = in, td.out = out;
> >> > +    td.orientation = orientation;
> >> >      ctx->internal->execute(ctx, filter_slice, &td, NULL,
> >> FFMIN(outlink->h,
> >> > ff_filter_get_nb_threads(ctx)));
> >> >      av_frame_free(&in);
> >> >      return ff_filter_frame(outlink, out);
> >> > @@ -373,6 +486,19 @@ static const AVOption transpose_options[] = {
> >> >          { "portrait",  "preserve portrait geometry",   0,
> >> > AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT},  INT_MIN,
> INT_MAX,
> >> > FLAGS, "passthrough" },
> >> >          { "landscape", "preserve landscape geometry",  0,
> >> > AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN,
> INT_MAX,
> >> > FLAGS, "passthrough" },
> >> >
> >> > +    { "orientation", "apply frame exif orientation",
> >> > +      OFFSET(orientation), AV_OPT_TYPE_INT, {.i64 = ORIENTATION_NONE
> },
> >> > -2, 8, FLAGS, "orientation" },
> >>
> >> -2 and 8 are still hardcoded here.
> >
> >
> > Hi Paul,
> > I actually explained this in path version 6 and thought it was fine since
> > no objection.
> > "I updated the default value type to enum. But I still keep the value
> range
> > -2 and 8 as numeric here since I see other options are doing that. Hope
> it
> > is fine."
> > I see other options in the same file like "dir" is doing that, maybe
> > consistent with them ? what do you think ?
>
> Unacceptable explanation. The code is wrong. Making it consistent with
> wrong code will not make it better.


New version is sent out for addressing it.
https://patchwork.ffmpeg.org/patch/13478/
Thanks.

Best Regards,
Jun

>
>
>
> > Best Regards,
> > Jun
> >
> >
> >>
> >> +        { "auto_transpose",    "apply transposition if frame's
> >> orientation
> >> > value is in range [5,8]",                     0, AV_OPT_TYPE_CONST,
> >> > {.i64=ORIENTATION_AUTO_TRANSPOSE},    INT_MIN, INT_MAX, FLAGS,
> >> "orientation"
> >> > },
> >> > +        { "auto_flip",         "apply flip if frame's orientation
> value
> >> is
> >> > in range [1,4]",                              0, AV_OPT_TYPE_CONST,
> >> > {.i64=ORIENTATION_AUTO_FLIP},         INT_MIN, INT_MAX, FLAGS,
> >> "orientation"
> >> > },
> >> > +        { "none",              "apply default transposition, same as
> >> > dir=cclock_flip",                                   0,
> >> > AV_OPT_TYPE_CONST,
> >> > {.i64=ORIENTATION_NONE},              INT_MIN, INT_MAX, FLAGS,
> >> "orientation"
> >> > },
> >> > +        { "normal",            "exif orientation 'Normal', do not
> apply
> >> any
> >> > flip or transposition",                      0, AV_OPT_TYPE_CONST,
> >> > {.i64=ORIENTATION_NORMAL},            INT_MIN, INT_MAX, FLAGS,
> >> "orientation"
> >> > },
> >> > +        { "hflip",             "exif orientation 'Mirror horizontal',
> >> apply
> >> > horizontal flip",                            0, AV_OPT_TYPE_CONST,
> >> > {.i64=ORIENTATION_HFLIP},             INT_MIN, INT_MAX, FLAGS,
> >> "orientation"
> >> > },
> >> > +        { "rotate180",         "exif orientation 'Rotate 180', apply
> >> > rotation 180",                                      0,
> >> > AV_OPT_TYPE_CONST,
> >> > {.i64=ORIENTATION_ROTATE180},         INT_MIN, INT_MAX, FLAGS,
> >> "orientation"
> >> > },
> >> > +        { "vflip",             "exif orientation 'Mirror vertical',
> >> apply
> >> > vertical flip",                                0, AV_OPT_TYPE_CONST,
> >> > {.i64=ORIENTATION_VFLIP},             INT_MIN, INT_MAX, FLAGS,
> >> "orientation"
> >> > },
> >> > +        { "hflip_rotate270cw", "exif orientation 'Mirror horizontal
> and
> >> > rotate 270 CW', same effect as dir=cclock_flip", 0, AV_OPT_TYPE_CONST,
> >> > {.i64=ORIENTATION_HFLIP_ROTATE270CW}, INT_MIN, INT_MAX, FLAGS,
> >> "orientation"
> >> > },
> >> > +        { "rotate90cw",        "exif orientation 'Rotate 90 CW', same
> >> > as
> >> > dir=clock",                                     0, AV_OPT_TYPE_CONST,
> >> > {.i64=ORIENTATION_ROTATE90CW},        INT_MIN, INT_MAX, FLAGS,
> >> "orientation"
> >> > },
> >> > +        { "hflip_rotate90cw",  "exif orientation 'Mirror horizontal
> and
> >> > rotate 90 CW', same effect as dir=clock_flip",   0, AV_OPT_TYPE_CONST,
> >> > {.i64=ORIENTATION_HFLIP_ROTATE90CW},  INT_MIN, INT_MAX, FLAGS,
> >> "orientation"
> >> > },
> >> > +        { "rotate270",         "exif orientation 'Rotate 270 CW',
> same
> >> as
> >> > dir=cclock",                                   0, AV_OPT_TYPE_CONST,
> >> > {.i64=ORIENTATION_ROTATE270CW},       INT_MIN, INT_MAX, FLAGS,
> >> "orientation"
> >> > },
> >> >      { NULL }
> >> >  };
> >> >
> >> > --
> >> > 2.17.1
> >> >
> >> > _______________________________________________
> >> > ffmpeg-devel mailing list
> >> > ffmpeg-devel@ffmpeg.org
> >> > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> >> >
> >> > To unsubscribe, visit link above, or email
> >> > ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
> >> _______________________________________________
> >> ffmpeg-devel mailing list
> >> ffmpeg-devel@ffmpeg.org
> >> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> >>
> >> To unsubscribe, visit link above, or email
> >> ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
> > _______________________________________________
> > ffmpeg-devel mailing list
> > ffmpeg-devel@ffmpeg.org
> > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> >
> > To unsubscribe, visit link above, or email
> > ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> To unsubscribe, visit link above, or email
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