X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmpeg12enc.c;h=441e9bbd78ccd93b2aa5f6a526cd98dc4f1577e0;hb=2f9d6ffda78725e11b351a7a5d69414a32010810;hp=b3ed3675a6b5fc62215f94c804a2abd76bbec86e;hpb=bd4640375e24fc0aa8846d9ee42cebe3c1fa9c12;p=ffmpeg

diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c
index b3ed3675a6b..441e9bbd78c 100644
--- a/libavcodec/mpeg12enc.c
+++ b/libavcodec/mpeg12enc.c
@@ -33,8 +33,9 @@
 #include "mpeg12data.h"
 #include "bytestream.h"
 #include "timecode.h"
+#include "libavutil/log.h"
 #include "libavutil/opt.h"
-
+#include "libavutil/avassert.h"
 
 static const uint8_t inv_non_linear_qscale[13] = {
     0, 2, 4, 6, 8,
@@ -142,6 +143,13 @@ static av_cold int encode_init(AVCodecContext *avctx)
     if(MPV_encode_init(avctx) < 0)
         return -1;
 
+#if FF_API_MPEGVIDEO_GLOBAL_OPTS
+    if (avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE)
+        s->drop_frame_timecode = 1;
+    if (avctx->flags & CODEC_FLAG_SVCD_SCAN_OFFSET)
+        s->scan_offset = 1;
+#endif
+
     if(find_frame_rate_index(s) < 0){
         if(s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){
             av_log(avctx, AV_LOG_ERROR, "MPEG1/2 does not support %d/%d fps\n", avctx->time_base.den, avctx->time_base.num);
@@ -174,8 +182,8 @@ static av_cold int encode_init(AVCodecContext *avctx)
         }
     }
 
-    s->tc.drop = !!(avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE);
-    if((avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE) && s->frame_rate_index != 4){
+    s->drop_frame_timecode = s->tc.drop = s->drop_frame_timecode || !!(avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE);
+    if (s->drop_frame_timecode && s->frame_rate_index != 4) {
         av_log(avctx, AV_LOG_ERROR, "Drop frame time code only allowed with 1001/30000 fps\n");
         return -1;
     }
@@ -292,13 +300,14 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s)
             }
 
             put_header(s, GOP_START_CODE);
-            put_bits(&s->pb, 1, s->tc.drop);
+            put_bits(&s->pb, 1, s->drop_frame_timecode); /* drop frame flag */
             /* time code : we must convert from the real frame rate to a
                fake mpeg frame rate in case of low frame rate */
             fps = (framerate.num + framerate.den/2)/ framerate.den;
             time_code = s->current_picture_ptr->f.coded_picture_number + s->avctx->timecode_frame_start;
 
             s->gop_picture_number = s->current_picture_ptr->f.coded_picture_number;
+            av_assert0(s->drop_frame_timecode == s->tc.drop);
             if (s->tc.drop)
                 time_code = ff_framenum_to_drop_timecode(time_code);
             put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
@@ -417,7 +426,7 @@ void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
         put_bits(&s->pb, 1, s->progressive_frame);
         put_bits(&s->pb, 1, 0); //composite_display_flag
     }
-    if(s->flags & CODEC_FLAG_SVCD_SCAN_OFFSET){
+    if (s->scan_offset) {
         int i;
 
         put_header(s, USER_START_CODE);
@@ -929,17 +938,38 @@ static void mpeg1_encode_block(MpegEncContext *s,
     put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]);
 }
 
-static const AVClass class = {
-    .class_name = "mpegvideo",
-    .item_name  = av_default_item_name,
-    .version    = LIBAVUTIL_VERSION_INT,
-    .option     = (const AVOption[]){
-        {TIMECODE_OPT(MpegEncContext,
-         AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)},
-        {NULL}
-    },
+#define OFFSET(x) offsetof(MpegEncContext, x)
+#define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
+#define COMMON_OPTS\
+        {TIMECODE_OPT(MpegEncContext,\
+         AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)},\
+    { "intra_vlc",           "Use MPEG-2 intra VLC table.",       OFFSET(intra_vlc_format),    FF_OPT_TYPE_INT, { 0 }, 0, 1, VE },\
+    { "drop_frame_timecode", "Timecode is in drop frame format.", OFFSET(drop_frame_timecode), FF_OPT_TYPE_INT, { 0 }, 0, 1, VE}, \
+    { "scan_offset",         "Reserve space for SVCD scan offset user data.", OFFSET(scan_offset), FF_OPT_TYPE_INT, { 0 }, 0, 1, VE },
+
+static const AVOption mpeg1_options[] = {
+    COMMON_OPTS
+    { NULL },
+};
+
+static const AVOption mpeg2_options[] = {
+    COMMON_OPTS
+    { "non_linear_quant",    "Use nonlinear quantizer.",          OFFSET(q_scale_type),         FF_OPT_TYPE_INT, { 0 }, 0, 1, VE },
+    { "alternate_scan",      "Enable alternate scantable.",       OFFSET(alternate_scan),       FF_OPT_TYPE_INT, { 0 }, 0, 1, VE },
+    { NULL },
 };
 
+#define mpeg12_class(x)\
+static const AVClass mpeg## x ##_class = {\
+    .class_name   = "mpeg" #x "video encoder",\
+    .item_name    = av_default_item_name,\
+    .option       = mpeg## x ##_options,\
+    .version      = LIBAVUTIL_VERSION_INT,\
+};
+
+mpeg12_class(1)
+mpeg12_class(2)
+
 AVCodec ff_mpeg1video_encoder = {
     .name           = "mpeg1video",
     .type           = AVMEDIA_TYPE_VIDEO,
@@ -952,7 +982,7 @@ AVCodec ff_mpeg1video_encoder = {
     .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
     .capabilities= CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
     .long_name= NULL_IF_CONFIG_SMALL("MPEG-1 video"),
-    .priv_class = &class,
+    .priv_class     = &mpeg1_class,
 };
 
 AVCodec ff_mpeg2video_encoder = {
@@ -967,5 +997,5 @@ AVCodec ff_mpeg2video_encoder = {
     .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE},
     .capabilities= CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
     .long_name= NULL_IF_CONFIG_SMALL("MPEG-2 video"),
-    .priv_class = &class,
+    .priv_class     = &mpeg2_class,
 };