move p*m from image/lavf -> image2/lavc

video/audio_codec_id in AVFormatParameters to override/help demuxer
av_guess_codec() to guess the default codecs based upon muxer + filename

Originally committed as revision 3668 to svn://svn.ffmpeg.org/ffmpeg/trunk

3 files changed, 55 insertions, 3 deletions

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 7d51ac425e..2f6cc3c4ef 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -5,7 +5,7 @@
 extern "C" {
 #endif
 
-#define LIBAVFORMAT_BUILD       4620
+#define LIBAVFORMAT_BUILD       4621
 
 #define LIBAVFORMAT_VERSION_INT FFMPEG_VERSION_INT
 #define LIBAVFORMAT_VERSION     FFMPEG_VERSION
@@ -115,6 +115,8 @@ typedef struct AVFormatParameters {
                                   mpeg2ts_raw is TRUE */
     int initial_pause:1;       /* do not begin to play the stream
                                   immediately (RTSP only) */
+    enum CodecID video_codec_id;
+    enum CodecID audio_codec_id;
 } AVFormatParameters;
 
 #define AVFMT_NOFILE        0x0001 /* no file should be opened */
@@ -358,6 +360,7 @@ typedef struct AVImageFormat {
 void av_register_image_format(AVImageFormat *img_fmt);
 AVImageFormat *av_probe_image_format(AVProbeData *pd);
 AVImageFormat *guess_image_format(const char *filename);
+enum CodecID av_guess_image2_codec(const char *filename);
 int av_read_image(ByteIOContext *pb, const char *filename,
                   AVImageFormat *fmt,
                   int (*alloc_cb)(void *, AVImageInfo *info), void *opaque);
@@ -521,6 +524,8 @@ AVOutputFormat *guess_stream_format(const char *short_name,
                                     const char *filename, const char *mime_type);
 AVOutputFormat *guess_format(const char *short_name, 
                              const char *filename, const char *mime_type);
+enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name, 
+                            const char *filename, const char *mime_type, enum CodecType type);
 
 void av_hex_dump(FILE *f, uint8_t *buf, int size);
 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload);
diff --git a/libavformat/img2.c b/libavformat/img2.c
index f05a43a8e8..f230891063 100644
--- a/libavformat/img2.c
+++ b/libavformat/img2.c
@@ -38,6 +38,11 @@ static const IdStrMap img_tags[] = {
     { CODEC_ID_MJPEG     , "jpg"},
     { CODEC_ID_LJPEG     , "ljpg"},
     { CODEC_ID_PNG       , "png"},
+    { CODEC_ID_PPM       , "ppm"},
+    { CODEC_ID_PGM       , "pgm"},
+    { CODEC_ID_PGMYUV    , "pgmyuv"},
+    { CODEC_ID_PBM       , "pbm"},
+    { CODEC_ID_PAM       , "pam"},
     { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
     { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
     { CODEC_ID_MPEG4     , "mpg4-img"},
@@ -133,6 +138,10 @@ static int image_probe(AVProbeData *p)
         return 0;
 }
 
+enum CodecID av_guess_image2_codec(const char *filename){
+    return av_str2id(img_tags, filename);
+}
+
 static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
 {
     VideoData *s = s1->priv_data;
@@ -180,8 +189,16 @@ static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
                         st->codec.frame_rate_base) / st->codec.frame_rate;
     }
     
-    st->codec.codec_type = CODEC_TYPE_VIDEO;
-    st->codec.codec_id = av_str2id(img_tags, s->path);
+    if(ap->video_codec_id){
+        st->codec.codec_type = CODEC_TYPE_VIDEO;
+        st->codec.codec_id = ap->video_codec_id;
+    }else if(ap->audio_codec_id){
+        st->codec.codec_type = CODEC_TYPE_AUDIO;
+        st->codec.codec_id = ap->audio_codec_id;
+    }else{
+        st->codec.codec_type = CODEC_TYPE_VIDEO;
+        st->codec.codec_id = av_str2id(img_tags, s->path);
+    }
 
     return 0;
  
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 9c07d5f445..1669e74c3d 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -79,6 +79,11 @@ AVOutputFormat *guess_format(const char *short_name, const char *filename,
     /* specific test for image sequences */
     if (!short_name && filename && 
         filename_number_test(filename) >= 0 &&
+        av_guess_image2_codec(filename) != CODEC_ID_NONE) {
+        return guess_format("image2", NULL, NULL);
+    }
+    if (!short_name && filename && 
+        filename_number_test(filename) >= 0 &&
         guess_image_format(filename)) {
         return guess_format("image", NULL, NULL);
     }
@@ -125,6 +130,26 @@ AVOutputFormat *guess_stream_format(const char *short_name, const char *filename
     return fmt;
 }
 
+/**
+ * guesses the codec id based upon muxer and filename.
+ */
+enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name, 
+                            const char *filename, const char *mime_type, enum CodecType type){
+    if(type == CODEC_TYPE_VIDEO){
+        enum CodecID codec_id= CODEC_ID_NONE;
+
+        if(!strcmp(fmt->name, "image2")){
+            codec_id= av_guess_image2_codec(filename);
+        }
+        if(codec_id == CODEC_ID_NONE)
+            codec_id= fmt->video_codec;
+        return codec_id;
+    }else if(type == CODEC_TYPE_AUDIO)
+        return fmt->audio_codec;
+    else
+        return CODEC_ID_NONE;
+}
+
 AVInputFormat *av_find_input_format(const char *short_name)
 {
     AVInputFormat *fmt;
@@ -1740,6 +1765,11 @@ int av_find_stream_info(AVFormatContext *ic)
              st->codec.codec_id == CODEC_ID_VORBIS ||
              st->codec.codec_id == CODEC_ID_MJPEG ||
              st->codec.codec_id == CODEC_ID_PNG ||
+             st->codec.codec_id == CODEC_ID_PAM ||
+             st->codec.codec_id == CODEC_ID_PGM ||
+             st->codec.codec_id == CODEC_ID_PGMYUV ||
+             st->codec.codec_id == CODEC_ID_PBM ||
+             st->codec.codec_id == CODEC_ID_PPM ||
              (st->codec.codec_id == CODEC_ID_MPEG4 && !st->need_parsing)))
             try_decode_frame(st, pkt->data, pkt->size);