全屋定制状况频发槽点都在这儿

Directory:	../../../ffmpeg/
File:	src/libavcodec/sp5xdec.c
Date:	2025-08-04 00:43:16

	Exec	Total	Coverage
Lines:	33	35	94.3%
Functions:	1	1	100.0%
Branches:	14	20	70.0%

  
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      /*
    
       * Sunplus JPEG decoder (SP5X)
    
       * Copyright (c) 2003 Alex Beregszaszi
    
       *
    
       * This file is part of FFmpeg.
    
       *
    
       * FFmpeg is free software; you can redistribute it and/or
    
       * modify it under the terms of the GNU Lesser General Public
    
       * License as published by the Free Software Foundation; either
    
       * version 2.1 of the License, or (at your option) any later version.
    
       *
    
       * FFmpeg is distributed in the hope that it will be useful,
    
       * but WITHOUT ANY WARRANTY; without even the implied warranty of
    
       * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    
       * Lesser General Public License for more details.
    
       *
    
       * You should have received a copy of the GNU Lesser General Public
    
       * License along with FFmpeg; if not, write to the Free Software
    
       * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
    
       */
    
      /**
    
       * @file
    
       * Sunplus JPEG decoder (SP5X).
    
       */
    
      #include "config_components.h"
    
      #include "libavutil/mem.h"
    
      #include "avcodec.h"
    
      #include "codec_internal.h"
    
      #include "mjpegdec.h"
    
      #include "sp5x.h"
    
      382
      static int sp5x_decode_frame(AVCodecContext *avctx,
    
                                   AVFrame *frame, int *got_frame,
    
                                   AVPacket *avpkt)
    
      {
    
      382
          const uint8_t *buf = avpkt->data;
    
      382
          int buf_size = avpkt->size;
    
          uint8_t *recoded;
    
      382
          int i = 0, j = 0;
    
          int ret;
    
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      382
          if (!avctx->width || !avctx->height)
    
      ✗
              return -1;
    
      382
          recoded = av_mallocz(buf_size + 1024);
    
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      382
          if (!recoded)
    
      ✗
              return -1;
    
          /* SOI */
    
      382
          recoded[j++] = 0xFF;
    
      382
          recoded[j++] = 0xD8;
    
      382
          memcpy(recoded+j, &sp5x_data_dqt[0], sizeof(sp5x_data_dqt));
    
      382
          memcpy(recoded + j + 5,  &sp5x_qscale_five_quant_table[0], 64);
    
      382
          memcpy(recoded + j + 70, &sp5x_qscale_five_quant_table[1], 64);
    
      382
          j += sizeof(sp5x_data_dqt);
    
      382
          memcpy(recoded+j, &sp5x_data_dht[0], sizeof(sp5x_data_dht));
    
      382
          j += sizeof(sp5x_data_dht);
    
      382
          memcpy(recoded+j, &sp5x_data_sof[0], sizeof(sp5x_data_sof));
    
      382
          AV_WB16(recoded+j+5, avctx->coded_height);
    
      382
          AV_WB16(recoded+j+7, avctx->coded_width);
    
      382
          j += sizeof(sp5x_data_sof);
    
      382
          memcpy(recoded+j, &sp5x_data_sos[0], sizeof(sp5x_data_sos));
    
      382
          j += sizeof(sp5x_data_sos);
    
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      382
          if(avctx->codec_id==AV_CODEC_ID_AMV)
    
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      3672262
              for (i = 2; i < buf_size-2 && j < buf_size+1024-2; i++)
    
      3671891
                  recoded[j++] = buf[i];
    
          else
    
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      39435
          for (i = 14; i < buf_size && j < buf_size+1024-3; i++)
    
          {
    
      39424
              recoded[j++] = buf[i];
    
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      39424
              if (buf[i] == 0xff)
    
      93
                  recoded[j++] = 0;
    
          }
    
          /* EOI */
    
      382
          recoded[j++] = 0xFF;
    
      382
          recoded[j++] = 0xD9;
    
      382
          ret = ff_mjpeg_decode_frame_from_buf(avctx, frame, got_frame,
    
                                               avpkt, recoded, j);
    
      382
          av_free(recoded);
    
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      382
          return ret < 0 ? ret : avpkt->size;
    
      }
    
      #if CONFIG_SP5X_DECODER
    
      const FFCodec ff_sp5x_decoder = {
    
          .p.name         = "sp5x",
    
          CODEC_LONG_NAME("Sunplus JPEG (SP5X)"),
    
          .p.type         = AVMEDIA_TYPE_VIDEO,
    
          .p.id           = AV_CODEC_ID_SP5X,
    
          .priv_data_size = sizeof(MJpegDecodeContext),
    
          .init           = ff_mjpeg_decode_init,
    
          .close          = ff_mjpeg_decode_end,
    
          FF_CODEC_DECODE_CB(sp5x_decode_frame),
    
          .p.capabilities = AV_CODEC_CAP_DR1,
    
          .p.max_lowres   = 3,
    
          .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
    
      };
    
      #endif
    
      #if CONFIG_AMV_DECODER
    
      const FFCodec ff_amv_decoder = {
    
          .p.name         = "amv",
    
          CODEC_LONG_NAME("AMV Video"),
    
          .p.type         = AVMEDIA_TYPE_VIDEO,
    
          .p.id           = AV_CODEC_ID_AMV,
    
          .priv_data_size = sizeof(MJpegDecodeContext),
    
          .init           = ff_mjpeg_decode_init,
    
          .close          = ff_mjpeg_decode_end,
    
          FF_CODEC_DECODE_CB(sp5x_decode_frame),
    
          .p.max_lowres   = 3,
    
          .p.capabilities = AV_CODEC_CAP_DR1,
    
          .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
    
      };
    
      #endif

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Line	Branch	Exec	Source
1			/*
2			* Sunplus JPEG decoder (SP5X)
3			* Copyright (c) 2003 Alex Beregszaszi
4			*
5			* This file is part of FFmpeg.
6			*
7			* FFmpeg is free software; you can redistribute it and/or
8			* modify it under the terms of the GNU Lesser General Public
9			* License as published by the Free Software Foundation; either
10			* version 2.1 of the License, or (at your option) any later version.
11			*
12			* FFmpeg is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15			* Lesser General Public License for more details.
16			*
17			* You should have received a copy of the GNU Lesser General Public
18			* License along with FFmpeg; if not, write to the Free Software
19			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20			*/
21
22			/**
23			* @file
24			* Sunplus JPEG decoder (SP5X).
25			*/
26
27			#include "config_components.h"
28
29			#include "libavutil/mem.h"
30			#include "avcodec.h"
31			#include "codec_internal.h"
32			#include "mjpegdec.h"
33			#include "sp5x.h"
34
35
36		382	static int sp5x_decode_frame(AVCodecContext *avctx,
37			AVFrame frame, int got_frame,
38			AVPacket *avpkt)
39			{
40		382	const uint8_t *buf = avpkt->data;
41		382	int buf_size = avpkt->size;
42			uint8_t *recoded;
43		382	int i = 0, j = 0;
44			int ret;
45
46	2/4 ✓ Branch 0 taken 382 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 382 times.	382	if (!avctx->width \|\| !avctx->height)
47		✗	return -1;
48
49		382	recoded = av_mallocz(buf_size + 1024);
50	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 382 times.	382	if (!recoded)
51		✗	return -1;
52
53			/* SOI */
54		382	recoded[j++] = 0xFF;
55		382	recoded[j++] = 0xD8;
56
57		382	memcpy(recoded+j, &sp5x_data_dqt[0], sizeof(sp5x_data_dqt));
58		382	memcpy(recoded + j + 5, &sp5x_qscale_five_quant_table[0], 64);
59		382	memcpy(recoded + j + 70, &sp5x_qscale_five_quant_table[1], 64);
60		382	j += sizeof(sp5x_data_dqt);
61
62		382	memcpy(recoded+j, &sp5x_data_dht[0], sizeof(sp5x_data_dht));
63		382	j += sizeof(sp5x_data_dht);
64
65		382	memcpy(recoded+j, &sp5x_data_sof[0], sizeof(sp5x_data_sof));
66		382	AV_WB16(recoded+j+5, avctx->coded_height);
67		382	AV_WB16(recoded+j+7, avctx->coded_width);
68		382	j += sizeof(sp5x_data_sof);
69
70		382	memcpy(recoded+j, &sp5x_data_sos[0], sizeof(sp5x_data_sos));
71		382	j += sizeof(sp5x_data_sos);
72
73	2/2 ✓ Branch 0 taken 371 times. ✓ Branch 1 taken 11 times.	382	if(avctx->codec_id==AV_CODEC_ID_AMV)
74	3/4 ✓ Branch 0 taken 3671891 times. ✓ Branch 1 taken 371 times. ✓ Branch 2 taken 3671891 times. ✗ Branch 3 not taken.	3672262	for (i = 2; i < buf_size-2 && j < buf_size+1024-2; i++)
75		3671891	recoded[j++] = buf[i];
76			else
77	3/4 ✓ Branch 0 taken 39424 times. ✓ Branch 1 taken 11 times. ✓ Branch 2 taken 39424 times. ✗ Branch 3 not taken.	39435	for (i = 14; i < buf_size && j < buf_size+1024-3; i++)
78			{
79		39424	recoded[j++] = buf[i];
80	2/2 ✓ Branch 0 taken 93 times. ✓ Branch 1 taken 39331 times.	39424	if (buf[i] == 0xff)
81		93	recoded[j++] = 0;
82			}
83
84			/* EOI */
85		382	recoded[j++] = 0xFF;
86		382	recoded[j++] = 0xD9;
87
88		382	ret = ff_mjpeg_decode_frame_from_buf(avctx, frame, got_frame,
89			avpkt, recoded, j);
90
91		382	av_free(recoded);
92
93	1/2 ✓ Branch 0 taken 382 times. ✗ Branch 1 not taken.	382	return ret < 0 ? ret : avpkt->size;
94			}
95
96			#if CONFIG_SP5X_DECODER
97			const FFCodec ff_sp5x_decoder = {
98			.p.name = "sp5x",
99			CODEC_LONG_NAME("Sunplus JPEG (SP5X)"),
100			.p.type = AVMEDIA_TYPE_VIDEO,
101			.p.id = AV_CODEC_ID_SP5X,
102			.priv_data_size = sizeof(MJpegDecodeContext),
103			.init = ff_mjpeg_decode_init,
104			.close = ff_mjpeg_decode_end,
105			FF_CODEC_DECODE_CB(sp5x_decode_frame),
106			.p.capabilities = AV_CODEC_CAP_DR1,
107			.p.max_lowres = 3,
108			.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
109			};
110			#endif
111			#if CONFIG_AMV_DECODER
112			const FFCodec ff_amv_decoder = {
113			.p.name = "amv",
114			CODEC_LONG_NAME("AMV Video"),
115			.p.type = AVMEDIA_TYPE_VIDEO,
116			.p.id = AV_CODEC_ID_AMV,
117			.priv_data_size = sizeof(MJpegDecodeContext),
118			.init = ff_mjpeg_decode_init,
119			.close = ff_mjpeg_decode_end,
120			FF_CODEC_DECODE_CB(sp5x_decode_frame),
121			.p.max_lowres = 3,
122			.p.capabilities = AV_CODEC_CAP_DR1,
123			.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
124			};
125			#endif
126