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[84.188.134.134]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-395c7df35ecsm15809347f8f.16.2025.03.17.10.49.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Mar 2025 10:49:29 -0700 (PDT) From: Manuel Lauss <manuel.lauss@gmail.com> To: ffmpeg-devel@ffmpeg.org Date: Mon, 17 Mar 2025 18:49:15 +0100 Message-ID: <20250317174917.6872-14-manuel.lauss@gmail.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250317174917.6872-1-manuel.lauss@gmail.com> References: <20250317174917.6872-1-manuel.lauss@gmail.com> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH v3 13/14] avcodec/sanm: codec20 decoder X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches <ffmpeg-devel.ffmpeg.org> List-Unsubscribe: <https://ffmpeg.org/mailman/options/ffmpeg-devel>, <mailto:ffmpeg-devel-request@ffmpeg.org?subject=unsubscribe> List-Archive: <https://ffmpeg.org/pipermail/ffmpeg-devel> List-Post: <mailto:ffmpeg-devel@ffmpeg.org> List-Help: <mailto:ffmpeg-devel-request@ffmpeg.org?subject=help> List-Subscribe: <https://ffmpeg.org/mailman/listinfo/ffmpeg-devel>, <mailto:ffmpeg-devel-request@ffmpeg.org?subject=subscribe> Reply-To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org> Cc: Manuel Lauss <manuel.lauss@gmail.com> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" <ffmpeg-devel-bounces@ffmpeg.org> Archived-At: <https://master.gitmailbox.com/ffmpegdev/20250317174917.6872-14-manuel.lauss@gmail.com/> List-Archive: <https://master.gitmailbox.com/ffmpegdev/> List-Post: <mailto:ffmpegdev@gitmailbox.com> codec20 is raw uncompressed image data. It is used internally in Rebel Assault 1 as a special format for STOR (when parameter for STOR is set to 3), and is used again in the "Full Throttle Remaster" from 2017. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> --- v3: newly added libavcodec/sanm.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/libavcodec/sanm.c b/libavcodec/sanm.c index 730ec14b98..d8276f9d85 100644 --- a/libavcodec/sanm.c +++ b/libavcodec/sanm.c @@ -950,6 +950,24 @@ static int old_codec2(SANMVideoContext *ctx, GetByteContext *gb, int top, return 0; } +static int old_codec20(SANMVideoContext *ctx, int w, int h) +{ + uint8_t *dst = (uint8_t *)ctx->frm0; + + if (bytestream2_get_bytes_left(&ctx->gb) < w * h) + return AVERROR_INVALIDDATA; + + if (w == ctx->pitch) { + bytestream2_get_bufferu(&ctx->gb, dst, w * h); + } else { + for (int i = 0; i < h; i++) { + bytestream2_get_bufferu(&ctx->gb, dst, w); + dst += ctx->pitch; + } + } + return 0; +} + static inline void codec37_mv(uint8_t *dst, const uint8_t *src, int height, int stride, int x, int y) { @@ -1673,6 +1691,8 @@ static int process_frame_obj(SANMVideoContext *ctx, GetByteContext *gb) case 33: case 34: return old_codec4(ctx, gb, top, left, w, h, param, parm2, codec); + case 20: + return old_codec20(ctx, w, h); case 21: return old_codec21(ctx, gb, top, left, w, h); case 23: -- 2.49.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".