demux_raw: drop "mp-rawvideo" use

This is an old pseudo codec to pass through the pixel format. Setup a
suitable AVCodecParameter directly instead, so the "rawvideo" codec can
be used.

DOCS/interface-changes.rst

@@ -24,6 +24,7 @@ Interface changes
       Some of them were removed in earlier releases.
     - introduce --replaygain... options, which replace the same functionality
       provided by the deprecated --af=volume:replaygain... mechanism.
+    - drop the internal "mp-rawvideo" codec (used by --demuxer=rawvideo)
  --- mpv 0.25.0 ---
     - remove opengl-cb dxva2 dummy hwdec interop
       (see git "vo_opengl: remove dxva2 dummy hwdec backend")

common/av_common.c

@@ -90,10 +90,6 @@ AVCodecParameters *mp_codec_params_to_av(struct mp_codec_params *c)
     // Video only
     avp->width = c->disp_w;
     avp->height = c->disp_h;
-    if (c->codec && strcmp(c->codec, "mp-rawvideo") == 0) {
-        avp->format = imgfmt2pixfmt(c->codec_tag);
-        avp->codec_tag = 0;
-    }
 
     // Audio only
     avp->sample_rate = c->samplerate;

demux/demux_raw.c

@@ -22,6 +22,10 @@
 #include <unistd.h>
 #include <string.h>
 
+#include <libavcodec/avcodec.h>
+
+#include "common/av_common.h"
+
 #include "options/m_config.h"
 #include "options/m_option.h"
 
@@ -30,6 +34,7 @@
 #include "stheader.h"
 #include "codec_tags.h"
 
+#include "video/fmt-conversion.h"
 #include "video/img_format.h"
 #include "video/img_fourcc.h"
 
@@ -187,9 +192,9 @@ static int demux_rawvideo_open(demuxer_t *demuxer, enum demux_check check)
     const char *decoder = "rawvideo";
     int imgfmt = opts->vformat;
     int imgsize = opts->imgsize;
+    int mp_imgfmt = 0;
     if (opts->mp_format && !IMGFMT_IS_HWACCEL(opts->mp_format)) {
-        decoder = "mp-rawvideo";
-        imgfmt = opts->mp_format;
+        mp_imgfmt = opts->mp_format;
         if (!imgsize) {
             struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(opts->mp_format);
             for (int p = 0; p < desc.num_planes; p++) {
@@ -241,6 +246,16 @@ static int demux_rawvideo_open(demuxer_t *demuxer, enum demux_check check)
     c->reliable_fps = true;
     c->disp_w = width;
     c->disp_h = height;
+    if (mp_imgfmt) {
+        c->lav_codecpar = avcodec_parameters_alloc();
+        if (!c->lav_codecpar)
+            abort();
+        c->lav_codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+        c->lav_codecpar->codec_id = mp_codec_to_av_codec_id(decoder);
+        c->lav_codecpar->format = imgfmt2pixfmt(mp_imgfmt);
+        c->lav_codecpar->width = width;
+        c->lav_codecpar->height = height;
+    }
     demux_add_sh_stream(demuxer, sh);
 
     struct priv *p = talloc_ptrtype(demuxer, p);

video/decode/vd_lavc.c

@@ -556,9 +556,6 @@ static void init_avctx(struct dec_video *vd, const char *decoder,
 
     assert(!ctx->avctx);
 
-    if (strcmp(decoder, "mp-rawvideo") == 0)
-        decoder = "rawvideo";
-
     AVCodec *lavc_codec = avcodec_find_decoder_by_name(decoder);
     if (!lavc_codec)
         return;
@@ -1216,8 +1213,6 @@ static int control(struct dec_video *vd, int cmd, void *arg)
 static void add_decoders(struct mp_decoder_list *list)
 {
     mp_add_lavc_decoders(list, AVMEDIA_TYPE_VIDEO);
-    mp_add_decoder(list, "lavc", "mp-rawvideo", "mp-rawvideo",
-                   "raw video");
 }
 
 const struct vd_functions mpcodecs_vd_ffmpeg = {