This decoder unquantizes while parsing blocks and does not use dct_unquantize_mpeg1_intra (which uses *_dc_scale) at all. repeat_field was unused since e0a3d744a0d5a9a25fb85c9bba17e3b07d3ba29b.
Unified · Split
| @@ -72,7 +72,6 @@ enum Mpeg2ClosedCaptionsFormat { · 71 unmodified lines | |||
| 72 | 72 | ||
| 73 | typedef struct Mpeg1Context { | 73 | typedef struct Mpeg1Context { |
| 74 | MpegEncContext mpeg_enc_ctx; | 74 | MpegEncContext mpeg_enc_ctx; |
| 75 | int repeat_field; /* true if we must repeat the field */ | ||
| 76 | AVPanScan pan_scan; /* some temporary storage for the panscan */ | 75 | AVPanScan pan_scan; /* some temporary storage for the panscan */ |
| 77 | enum AVStereo3DType stereo3d_type; | 76 | enum AVStereo3DType stereo3d_type; |
| 78 | int has_stereo3d; | 77 | int has_stereo3d; |
| @@ -781,7 +780,6 @@ static av_cold int mpeg_decode_init(AVCodecContext *avctx) · 702 unmodified lines | |||
| 781 | ff_mpeg12_init_vlcs(); | 780 | ff_mpeg12_init_vlcs(); |
| 782 | 781 | ||
| 783 | s2->chroma_format = 1; | 782 | s2->chroma_format = 1; |
| 784 | s->repeat_field = 0; | ||
| 785 | avctx->color_range = AVCOL_RANGE_MPEG; | 783 | avctx->color_range = AVCOL_RANGE_MPEG; |
| 786 | return 0; | 784 | return 0; |
| 787 | } | 785 | } |
| @@ -1050,8 +1048,6 @@ static int mpeg1_decode_picture(AVCodecContext *avctx, const uint8_t *buf, · 262 unmodified lines | |||
| 1050 | av_log(avctx, AV_LOG_DEBUG, | 1048 | av_log(avctx, AV_LOG_DEBUG, |
| 1051 | "vbv_delay %d, ref %d type:%d\n", vbv_delay, ref, s->pict_type); | 1049 | "vbv_delay %d, ref %d type:%d\n", vbv_delay, ref, s->pict_type); |
| 1052 | 1050 | ||
| 1053 | s->y_dc_scale = 8; | ||
| 1054 | s->c_dc_scale = 8; | ||
| 1055 | return 0; | 1051 | return 0; |
| 1056 | } | 1052 | } |
| 1057 | 1053 | ||