On Thu, 2022-05-26 at 08:08 +0000, softworkz wrote:
From: softworkz <softworkz@hotmail.com>
Signed-off-by: softworkz <softworkz@hotmail.com> --- libavcodec/mpeg12.h | 28 ++++++++++++++++++++++++++++ libavcodec/mpeg12dec.c | 40 +++++----------------------------------- 2 files changed, 33 insertions(+), 35 deletions(-)
diff --git a/libavcodec/mpeg12.h b/libavcodec/mpeg12.h index e0406b32d9..84a829cdd3 100644 --- a/libavcodec/mpeg12.h +++ b/libavcodec/mpeg12.h @@ -23,6 +23,7 @@ #define AVCODEC_MPEG12_H
#include "mpegvideo.h" +#include "libavutil/stereo3d.h"
/* Start codes. */ #define SEQ_END_CODE 0x000001b7 @@ -34,6 +35,31 @@ #define EXT_START_CODE 0x000001b5 #define USER_START_CODE 0x000001b2
+typedef struct Mpeg1Context { + MpegEncContext mpeg_enc_ctx; + int mpeg_enc_ctx_allocated; /* true if decoding context allocated */ + int repeat_field; /* true if we must repeat the field */ + AVPanScan pan_scan; /* some temporary storage for the panscan */ + AVStereo3D stereo3d; + int has_stereo3d; + AVBufferRef *a53_buf_ref; + uint8_t afd; + int has_afd; + int slice_count; + unsigned aspect_ratio_info; + AVRational save_aspect; + int save_width, save_height, save_progressive_seq; + int rc_buffer_size; + AVRational frame_rate_ext; /* MPEG-2 specific framerate modificator */ + unsigned frame_rate_index; + int sync; /* Did we reach a sync point like a GOP/SEQ/KEYFrame? */ + int closed_gop; + int tmpgexs; + int first_slice; + int extradata_decoded; + int64_t timecode_frame_start; /*< GOP timecode frame start number, in non drop frame format */ +} Mpeg1Context; + void ff_mpeg12_common_init(MpegEncContext *s);
void ff_mpeg1_clean_buffers(MpegEncContext *s); @@ -45,4 +71,6 @@ void ff_mpeg12_find_best_frame_rate(AVRational frame_rate, int *code, int *ext_n, int *ext_d, int nonstandard);
+void ff_mpeg_decode_user_data(AVCodecContext *avctx, Mpeg1Context *s1, const uint8_t *p, int buf_size); + #endif /* AVCODEC_MPEG12_H */ diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c index e9bde48f7a..11d2b58185 100644 --- a/libavcodec/mpeg12dec.c +++ b/libavcodec/mpeg12dec.c @@ -58,31 +58,6 @@
#define A53_MAX_CC_COUNT 2000
-typedef struct Mpeg1Context { - MpegEncContext mpeg_enc_ctx; - int mpeg_enc_ctx_allocated; /* true if decoding context allocated */ - int repeat_field; /* true if we must repeat the field */ - AVPanScan pan_scan; /* some temporary storage for the panscan */ - AVStereo3D stereo3d; - int has_stereo3d; - AVBufferRef *a53_buf_ref; - uint8_t afd; - int has_afd; - int slice_count; - unsigned aspect_ratio_info; - AVRational save_aspect; - int save_width, save_height, save_progressive_seq; - int rc_buffer_size; - AVRational frame_rate_ext; /* MPEG-2 specific framerate modificator */ - unsigned frame_rate_index; - int sync; /* Did we reach a sync point like a GOP/SEQ/KEYFrame? */ - int closed_gop; - int tmpgexs; - int first_slice; - int extradata_decoded; - int64_t timecode_frame_start; /*< GOP timecode frame start number, in non drop frame format */ -} Mpeg1Context; - #define MB_TYPE_ZERO_MV 0x20000000
static const uint32_t ptype2mb_type[7] = { @@ -2198,11 +2173,9 @@ static int vcr2_init_sequence(AVCodecContext *avctx) return 0; }
-static int mpeg_decode_a53_cc(AVCodecContext *avctx, +static int mpeg_decode_a53_cc(AVCodecContext *avctx, Mpeg1Context *s1, const uint8_t *p, int buf_size) { - Mpeg1Context *s1 = avctx->priv_data; - if (buf_size >= 6 && p[0] == 'G' && p[1] == 'A' && p[2] == '9' && p[3] == '4' && p[4] == 3 && (p[5] & 0x40)) { @@ -2333,12 +2306,9 @@ static int mpeg_decode_a53_cc(AVCodecContext *avctx, return 0; }
-static void mpeg_decode_user_data(AVCodecContext *avctx, - const uint8_t *p, int buf_size) +void ff_mpeg_decode_user_data(AVCodecContext *avctx, Mpeg1Context *s1, const uint8_t *p, int buf_size) { - Mpeg1Context *s = avctx->priv_data; const uint8_t *buf_end = p + buf_size; - Mpeg1Context *s1 = avctx->priv_data;
#if 0 int i; @@ -2352,7 +2322,7 @@ static void mpeg_decode_user_data(AVCodecContext *avctx, int i; for(i=0; i<20; i++) if (!memcmp(p+i, "\0TMPGEXS\0", 9)){ - s->tmpgexs= 1; + s1->tmpgexs= 1; } } /* we parse the DTG active format information */ @@ -2398,7 +2368,7 @@ static void mpeg_decode_user_data(AVCodecContext *avctx, break; } } - } else if (mpeg_decode_a53_cc(avctx, p, buf_size)) { + } else if (mpeg_decode_a53_cc(avctx, s1, p, buf_size)) { return; } } @@ -2590,7 +2560,7 @@ static int decode_chunks(AVCodecContext *avctx, AVFrame *picture, } break; case USER_START_CODE: - mpeg_decode_user_data(avctx, buf_ptr, input_size); + ff_mpeg_decode_user_data(avctx, s, buf_ptr, input_size); break; case GOP_START_CODE: if (last_code == 0) {
LGTM -Haihao