avcodec: remove avcodec_parse_frame and deprecate associated elements.

The documentation for CODEC_CAP_PARSE_ONLY and AVCodecContext.parse_only
indicates that they are utilized through avcodec_parse_frame(), which was
never actually implemented.

doc/APIchanges

@@ -13,6 +13,10 @@ libavutil:   2011-04-18
 
 API changes, most recent first:
 
+2011-xx-xx - xxxxxxx - lavc 53.15.0
+  Remove avcodec_parse_frame.
+  Deprecate AVCodecContext.parse_only and CODEC_CAP_PARSE_ONLY.
+
 2011-10-xx - xxxxxxx - lavf 53.10.0
   Add avformat_new_stream(). Deprecate av_new_stream().
 

libavcodec/avcodec.h

@@ -668,8 +668,10 @@ typedef struct RcOverride{
  * assume the buffer was allocated by avcodec_default_get_buffer.
  */
 #define CODEC_CAP_DR1             0x0002
+#if FF_API_PARSE_FRAME
 /* If 'parse_only' field is true, then avcodec_parse_frame() can be used. */
 #define CODEC_CAP_PARSE_ONLY      0x0004
+#endif
 #define CODEC_CAP_TRUNCATED       0x0008
 /* Codec can export data for HW decoding (XvMC). */
 #define CODEC_CAP_HWACCEL         0x0010
@@ -1530,9 +1532,15 @@ typedef struct AVCodecContext {
      */
     int block_align;
 
-    int parse_only; /* - decoding only: If true, only parsing is done
-                       (function avcodec_parse_frame()). The frame
-                       data is returned. Only MPEG codecs support this now. */
+#if FF_API_PARSE_FRAME
+    /**
+     * If true, only parsing is done. The frame data is returned.
+     * Only MPEG audio decoders support this now.
+     * - encoding: unused
+     * - decoding: Set by user
+     */
+    attribute_deprecated int parse_only;
+#endif
 
     /**
      * 0-> h263 quant 1-> mpeg quant
@@ -3925,10 +3933,6 @@ int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
  */
 void avsubtitle_free(AVSubtitle *sub);
 
-int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
-                        int *data_size_ptr,
-                        uint8_t *buf, int buf_size);
-
 /**
  * Encode an audio frame from samples into buf.
  *

libavcodec/mpegaudiodec.c

@@ -279,7 +279,11 @@ static av_cold int decode_init(AVCodecContext * avctx)
     avctx->sample_fmt= OUT_FMT;
     s->err_recognition = avctx->err_recognition;
 
+#if FF_API_PARSE_FRAME
     if (!init && !avctx->parse_only) {
+#else
+    if (!init) {
+#endif
         int offset;
 
         /* scale factors table for layer 1/2 */
@@ -1869,10 +1873,12 @@ static int decode_frame_adu(AVCodecContext *avctx, void *data, int *data_size,
 
     s->frame_size = len;
 
+#if FF_API_PARSE_FRAME
     if (avctx->parse_only)
         out_size = buf_size;
     else
-        out_size = mp_decode_frame(s, out_samples, buf, buf_size);
+#endif
+    out_size = mp_decode_frame(s, out_samples, buf, buf_size);
 
     *data_size = out_size;
     return buf_size;
@@ -2110,7 +2116,9 @@ AVCodec ff_mp1_decoder = {
     .priv_data_size = sizeof(MPADecodeContext),
     .init           = decode_init,
     .decode         = decode_frame,
+#if FF_API_PARSE_FRAME
     .capabilities   = CODEC_CAP_PARSE_ONLY,
+#endif
     .flush          = flush,
     .long_name      = NULL_IF_CONFIG_SMALL("MP1 (MPEG audio layer 1)"),
 };
@@ -2123,7 +2131,9 @@ AVCodec ff_mp2_decoder = {
     .priv_data_size = sizeof(MPADecodeContext),
     .init           = decode_init,
     .decode         = decode_frame,
+#if FF_API_PARSE_FRAME
     .capabilities   = CODEC_CAP_PARSE_ONLY,
+#endif
     .flush          = flush,
     .long_name      = NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"),
 };
@@ -2136,7 +2146,9 @@ AVCodec ff_mp3_decoder = {
     .priv_data_size = sizeof(MPADecodeContext),
     .init           = decode_init,
     .decode         = decode_frame,
+#if FF_API_PARSE_FRAME
     .capabilities   = CODEC_CAP_PARSE_ONLY,
+#endif
     .flush          = flush,
     .long_name      = NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"),
 };
@@ -2149,7 +2161,9 @@ AVCodec ff_mp3adu_decoder = {
     .priv_data_size = sizeof(MPADecodeContext),
     .init           = decode_init,
     .decode         = decode_frame_adu,
+#if FF_API_PARSE_FRAME
     .capabilities   = CODEC_CAP_PARSE_ONLY,
+#endif
     .flush          = flush,
     .long_name      = NULL_IF_CONFIG_SMALL("ADU (Application Data Unit) MP3 (MPEG audio layer 3)"),
 };

libavcodec/mpegaudiodec_float.c

@@ -30,7 +30,9 @@ AVCodec ff_mp1float_decoder = {
     .priv_data_size = sizeof(MPADecodeContext),
     .init           = decode_init,
     .decode         = decode_frame,
+#if FF_API_PARSE_FRAME
     .capabilities   = CODEC_CAP_PARSE_ONLY,
+#endif
     .flush          = flush,
     .long_name      = NULL_IF_CONFIG_SMALL("MP1 (MPEG audio layer 1)"),
 };
@@ -43,7 +45,9 @@ AVCodec ff_mp2float_decoder = {
     .priv_data_size = sizeof(MPADecodeContext),
     .init           = decode_init,
     .decode         = decode_frame,
+#if FF_API_PARSE_FRAME
     .capabilities   = CODEC_CAP_PARSE_ONLY,
+#endif
     .flush          = flush,
     .long_name      = NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"),
 };
@@ -56,7 +60,9 @@ AVCodec ff_mp3float_decoder = {
     .priv_data_size = sizeof(MPADecodeContext),
     .init           = decode_init,
     .decode         = decode_frame,
+#if FF_API_PARSE_FRAME
     .capabilities   = CODEC_CAP_PARSE_ONLY,
+#endif
     .flush          = flush,
     .long_name      = NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"),
 };
@@ -69,7 +75,9 @@ AVCodec ff_mp3adufloat_decoder = {
     .priv_data_size = sizeof(MPADecodeContext),
     .init           = decode_init,
     .decode         = decode_frame_adu,
+#if FF_API_PARSE_FRAME
     .capabilities   = CODEC_CAP_PARSE_ONLY,
+#endif
     .flush          = flush,
     .long_name      = NULL_IF_CONFIG_SMALL("ADU (Application Data Unit) MP3 (MPEG audio layer 3)"),
 };

libavcodec/version.h

@@ -21,7 +21,7 @@
 #define AVCODEC_VERSION_H
 
 #define LIBAVCODEC_VERSION_MAJOR 53
-#define LIBAVCODEC_VERSION_MINOR  14
+#define LIBAVCODEC_VERSION_MINOR 15
 #define LIBAVCODEC_VERSION_MICRO  0
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
@@ -101,5 +101,8 @@
 #ifndef FF_API_GET_ALPHA_INFO
 #define FF_API_GET_ALPHA_INFO    (LIBAVCODEC_VERSION_MAJOR < 54)
 #endif
+#ifndef FF_API_PARSE_FRAME
+#define FF_API_PARSE_FRAME (LIBAVCODEC_VERSION_MAJOR < 54)
+#endif
 
 #endif /* AVCODEC_VERSION_H */