vd_lavc: remove unneeded hwdec parameters

All hwdec backends now use a single pixel format, and the format is
always checked.

Also, the init_decoder callback is now mandatory.

video/decode/dxva2.c

@@ -205,14 +205,11 @@ static void dxva2_release_img(void *ptr)
     av_free(w);
 }
 
-static struct mp_image *dxva2_allocate_image(struct lavc_ctx *s, int fmt,
+static struct mp_image *dxva2_allocate_image(struct lavc_ctx *s,
                                              int img_w, int img_h)
 {
     DXVA2Context *ctx = s->hwdec_priv;
 
-    if (fmt != IMGFMT_DXVA2)
-        return NULL;
-
     int i, old_unused = -1;
     for (i = 0; i < ctx->num_surfaces; i++) {
         surface_info *info = &ctx->surface_infos[i];
@@ -652,7 +649,7 @@ fail:
     return -1;
 }
 
-static int dxva2_init_decoder(struct lavc_ctx *s, int fmt, int w, int h)
+static int dxva2_init_decoder(struct lavc_ctx *s, int w, int h)
 {
     DXVA2Context *ctx = s->hwdec_priv;
 

video/decode/lavc.h

@@ -43,12 +43,11 @@ struct vd_lavc_hwdec {
     int (*probe)(struct vd_lavc_hwdec *hwdec, struct mp_hwdec_info *info,
                  const char *decoder);
     int (*init)(struct lavc_ctx *ctx);
-    int (*init_decoder)(struct lavc_ctx *ctx, int fmt, int w, int h);
+    int (*init_decoder)(struct lavc_ctx *ctx, int w, int h);
     void (*uninit)(struct lavc_ctx *ctx);
     // Note: if init_decoder is set, this will always use the values from the
     //       last successful init_decoder call. Otherwise, it's up to you.
-    struct mp_image *(*allocate_image)(struct lavc_ctx *ctx, int fmt,
+    struct mp_image *(*allocate_image)(struct lavc_ctx *ctx, int w, int h);
-                                       int w, int h);
     // Process the image returned by the libavcodec decoder.
     struct mp_image *(*process_image)(struct lavc_ctx *ctx, struct mp_image *img);
     // For horrible Intel shit-drivers only

video/decode/rpi.c

@@ -18,7 +18,7 @@
 #include "lavc.h"
 #include "common/common.h"
 
-static int init_decoder(struct lavc_ctx *ctx, int fmt, int w, int h)
+static int init_decoder(struct lavc_ctx *ctx, int w, int h)
 {
     return 0;
 }

video/decode/vaapi.c

@@ -179,7 +179,7 @@ static bool has_profile(VAProfile *va_profiles, int num_profiles, VAProfile p)
     return false;
 }
 
-static int init_decoder(struct lavc_ctx *ctx, int fmt, int w, int h)
+static int init_decoder(struct lavc_ctx *ctx, int w, int h)
 {
     void *tmp = talloc_new(NULL);
 
@@ -270,8 +270,7 @@ error:
     return res;
 }
 
-static struct mp_image *allocate_image(struct lavc_ctx *ctx, int format,
+static struct mp_image *allocate_image(struct lavc_ctx *ctx, int w, int h)
-                                       int w, int h)
 {
     struct priv *p = ctx->hwdec_priv;
 

video/decode/vd_lavc.c

@@ -529,9 +529,8 @@ static enum AVPixelFormat get_format_hwdec(struct AVCodecContext *avctx,
                 ctx->hwdec_fmt = ctx->hwdec->image_format;
                 ctx->hwdec_profile = avctx->profile;
                 ctx->hwdec_request_reinit = false;
-                if (ctx->hwdec->init_decoder && change) {
+                if (change) {
-                    if (ctx->hwdec->init_decoder(ctx, ctx->hwdec_fmt,
+                    if (ctx->hwdec->init_decoder(ctx, ctx->hwdec_w, ctx->hwdec_h) < 0)
-                                                 ctx->hwdec_w, ctx->hwdec_h) < 0)
                     {
                         ctx->hwdec_fmt = 0;
                         break;
@@ -580,12 +579,10 @@ static int get_buffer2_hwdec(AVCodecContext *avctx, AVFrame *pic, int flags)
     int w = pic->width;
     int h = pic->height;
 
-    if (ctx->hwdec->init_decoder) {
     if (imgfmt != ctx->hwdec_fmt && w != ctx->hwdec_w && h != ctx->hwdec_h)
         return -1;
-    }
 
-    struct mp_image *mpi = ctx->hwdec->allocate_image(ctx, imgfmt, w, h);
+    struct mp_image *mpi = ctx->hwdec->allocate_image(ctx, w, h);
     if (!mpi)
         return -1;
 

video/decode/vda.c

@@ -73,7 +73,7 @@ static void print_vda_error(struct mp_log *log, int lev, char *message,
     mp_msg(log, lev, "%s: %d\n", message, error_code);
 }
 
-static int init_decoder(struct lavc_ctx *ctx, int fmt, int w, int h)
+static int init_decoder(struct lavc_ctx *ctx, int w, int h)
 {
     av_vda_default_free(ctx->avctx);
 #if HAVE_VDA_DEFAULT_INIT2

video/decode/vdpau.c

@@ -30,7 +30,7 @@ struct priv {
     uint64_t                    preemption_counter;
 };
 
-static int init_decoder(struct lavc_ctx *ctx, int fmt, int w, int h)
+static int init_decoder(struct lavc_ctx *ctx, int w, int h)
 {
     struct priv *p = ctx->hwdec_priv;
 
@@ -44,8 +44,7 @@ static int init_decoder(struct lavc_ctx *ctx, int fmt, int w, int h)
                                  AV_HWACCEL_FLAG_ALLOW_HIGH_DEPTH);
 }
 
-static struct mp_image *allocate_image(struct lavc_ctx *ctx, int fmt,
+static struct mp_image *allocate_image(struct lavc_ctx *ctx, int w, int h)
-                                       int w, int h)
 {
     struct priv *p = ctx->hwdec_priv;
 

video/decode/videotoolbox.c

@@ -83,7 +83,7 @@ static void print_videotoolbox_error(struct mp_log *log, int lev, char *message,
     mp_msg(log, lev, "%s: %d\n", message, error_code);
 }
 
-static int init_decoder(struct lavc_ctx *ctx, int fmt, int w, int h)
+static int init_decoder(struct lavc_ctx *ctx, int w, int h)
 {
     av_videotoolbox_default_free(ctx->avctx);