[FFmpeg-devel] [PATCH v10 1/2] lavf/vf_transpose: add exif orientation support

Jun Li junli1026 at gmail.com
Tue Jun 18 03:31:54 EEST 2019


On Sat, Jun 15, 2019 at 7:09 PM Jun Li <junli1026 at gmail.com> wrote:

>
>
> On Tue, Jun 11, 2019 at 7:05 PM Jun Li <junli1026 at gmail.com> wrote:
>
>>
>> On Sun, Jun 9, 2019 at 2:28 PM Jun Li <junli1026 at 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..05dc04a89f 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
>>> },  ORIENTATION_AUTO_TRANSPOSE, ORIENTATION_ROTATE270CW, FLAGS,
>>> "orientation" },
>>> +        { "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
>>>
>>>
>> Ping :)
>>
>
> Ping x 2
>

Ping x3, could someone please help to take a look ? Really appreciate that.

-Jun


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