avcodec/mpegvideo: Deprecate bframe opts for encoders not supporting them

MPEG-1/2/4 are the only mpegvideo based encoders that support bframes;
yet even the encoders not supporting bframes have options that only make
sense for an encoder that supports bframes; setting any of these options
for such an encoder has no impact on the encoded outcome (but setting
b_strategy to two slows down encoding considerably). So deprecate these
options.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/mjpegenc.c

@@ -597,6 +597,7 @@ FF_MPV_COMMON_OPTS
 #if FF_API_MPEGVIDEO_OPTS
 FF_MPV_DEPRECATED_MPEG_QUANT_OPT
 FF_MPV_DEPRECATED_A53_CC_OPT
+FF_MPV_DEPRECATED_BFRAME_OPTS
 #endif
 { NULL},
 };

libavcodec/mpeg12enc.c

@@ -1148,6 +1148,7 @@ av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
       OFFSET(scan_offset),         AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
     { "timecode_frame_start", "GOP timecode frame start number, in non-drop-frame format", \
       OFFSET(timecode_frame_start), AV_OPT_TYPE_INT64, {.i64 = -1 }, -1, INT64_MAX, VE}, \
+    FF_MPV_COMMON_BFRAME_OPTS
 
 static const AVOption mpeg1_options[] = {
     COMMON_OPTS

libavcodec/mpeg4videoenc.c

@@ -1377,6 +1377,7 @@ static const AVOption options[] = {
     { "alternate_scan",    "Enable alternate scantable.", OFFSET(alternate_scan),    AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
     { "mpeg_quant",        "Use MPEG quantizers instead of H.263",
       OFFSET(mpeg_quant), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, VE },
+    FF_MPV_COMMON_BFRAME_OPTS
     FF_MPV_COMMON_OPTS
 #if FF_API_MPEGVIDEO_OPTS
     FF_MPV_DEPRECATED_A53_CC_OPT

libavcodec/mpegvideo.h

@@ -662,9 +662,6 @@ FF_MPV_OPT_CMP_FUNC, \
 { "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
 { "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
 { "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
-{"b_strategy", "Strategy to choose between I/P/B-frames",           FF_MPV_OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, FF_MPV_OPT_FLAGS }, \
-{"b_sensitivity", "Adjust sensitivity of b_frame_strategy 1",       FF_MPV_OFFSET(b_sensitivity), AV_OPT_TYPE_INT, {.i64 = 40 }, 1, INT_MAX, FF_MPV_OPT_FLAGS }, \
-{"brd_scale", "Downscale frames for dynamic B-frame decision",      FF_MPV_OFFSET(brd_scale), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 3, FF_MPV_OPT_FLAGS }, \
 {"skip_threshold", "Frame skip threshold",                          FF_MPV_OFFSET(frame_skip_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
 {"skip_factor", "Frame skip factor",                                FF_MPV_OFFSET(frame_skip_factor), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
 {"skip_exp", "Frame skip exponent",                                 FF_MPV_OFFSET(frame_skip_exp), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
@@ -677,6 +674,11 @@ FF_MPV_OPT_CMP_FUNC, \
 {"intra_penalty", "Penalty for intra blocks in block decision", FF_MPV_OFFSET(intra_penalty), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX/2, FF_MPV_OPT_FLAGS }, \
 FF_MPV_RC_STRATEGY_OPTS
 
+#define FF_MPV_COMMON_BFRAME_OPTS \
+{"b_strategy", "Strategy to choose between I/P/B-frames",      FF_MPV_OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, FF_MPV_OPT_FLAGS }, \
+{"b_sensitivity", "Adjust sensitivity of b_frame_strategy 1",  FF_MPV_OFFSET(b_sensitivity), AV_OPT_TYPE_INT, {.i64 = 40 }, 1, INT_MAX, FF_MPV_OPT_FLAGS }, \
+{"brd_scale", "Downscale frames for dynamic B-frame decision", FF_MPV_OFFSET(brd_scale), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 3, FF_MPV_OPT_FLAGS },
+
 #if FF_API_MPEGVIDEO_OPTS
 #define FF_MPV_DEPRECATED_MPEG_QUANT_OPT \
     { "mpeg_quant", "Deprecated, does nothing", FF_MPV_OFFSET(mpeg_quant), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 0, FF_MPV_OPT_FLAGS | AV_OPT_FLAG_DEPRECATED },
@@ -684,6 +686,10 @@ FF_MPV_RC_STRATEGY_OPTS
     { "a53cc",      "Deprecated, does nothing", FF_MPV_OFFSET(a53_cc),     AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FF_MPV_OPT_FLAGS | AV_OPT_FLAG_DEPRECATED },
 #define FF_MPV_DEPRECATED_MATRIX_OPT \
    { "force_duplicated_matrix", "Deprecated, does nothing", FF_MPV_OFFSET(force_duplicated_matrix), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, FF_MPV_OPT_FLAGS | AV_OPT_FLAG_DEPRECATED },
+#define FF_MPV_DEPRECATED_BFRAME_OPTS \
+   { "b_strategy",    "Deprecated, does nothing", FF_MPV_OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, { .i64 =  0 }, 0, 2, FF_MPV_OPT_FLAGS | AV_OPT_FLAG_DEPRECATED }, \
+   { "b_sensitivity", "Deprecated, does nothing", FF_MPV_OFFSET(b_sensitivity),    AV_OPT_TYPE_INT, { .i64 = 40 }, 1, INT_MAX, FF_MPV_OPT_FLAGS | AV_OPT_FLAG_DEPRECATED }, \
+   { "brd_scale",     "Deprecated, does nothing", FF_MPV_OFFSET(brd_scale),        AV_OPT_TYPE_INT, { .i64 =  0 }, 0, 3, FF_MPV_OPT_FLAGS | AV_OPT_FLAG_DEPRECATED },
 #endif
 
 extern const AVOption ff_mpv_generic_options[];

libavcodec/mpegvideo_enc.c

@@ -90,6 +90,7 @@ const AVOption ff_mpv_generic_options[] = {
     FF_MPV_DEPRECATED_MPEG_QUANT_OPT
     FF_MPV_DEPRECATED_A53_CC_OPT
     FF_MPV_DEPRECATED_MATRIX_OPT
+    FF_MPV_DEPRECATED_BFRAME_OPTS
 #endif
     { NULL },
 };
@@ -4716,6 +4717,7 @@ static const AVOption h263_options[] = {
     FF_MPV_DEPRECATED_MPEG_QUANT_OPT
     FF_MPV_DEPRECATED_A53_CC_OPT
     FF_MPV_DEPRECATED_MATRIX_OPT
+    FF_MPV_DEPRECATED_BFRAME_OPTS
 #endif
     { NULL },
 };
@@ -4751,6 +4753,7 @@ static const AVOption h263p_options[] = {
     FF_MPV_DEPRECATED_MPEG_QUANT_OPT
     FF_MPV_DEPRECATED_A53_CC_OPT
     FF_MPV_DEPRECATED_MATRIX_OPT
+    FF_MPV_DEPRECATED_BFRAME_OPTS
 #endif
     { NULL },
 };