From: Manuel Lauss <manuel.lauss@gmail.com> To: ffmpeg-devel@ffmpeg.org Cc: Manuel Lauss <manuel.lauss@gmail.com> Subject: [FFmpeg-devel] [PATCH v3 13/14] avcodec/sanm: codec20 decoder Date: Mon, 17 Mar 2025 18:49:15 +0100 Message-ID: <20250317174917.6872-14-manuel.lauss@gmail.com> (raw) In-Reply-To: <20250317174917.6872-1-manuel.lauss@gmail.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".
next prev parent reply other threads:[~2025-03-17 17:51 UTC|newest] Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top 2025-03-17 17:49 [FFmpeg-devel] [PATCH v3 00/14] avcodec/sanm: various improvements Manuel Lauss 2025-03-17 17:49 ` [FFmpeg-devel] [PATCH v3 01/14] avcodec/sanm: disable left/top for fullscreen codecs Manuel Lauss 2025-03-17 17:49 ` [FFmpeg-devel] [PATCH v3 02/14] avcodec/sanm: FOBJ left/top are signed values Manuel Lauss 2025-03-17 17:49 ` [FFmpeg-devel] [PATCH v3 03/14] avcodec/sanm: better frame size detection for old codecs Manuel Lauss 2025-03-17 17:49 ` [FFmpeg-devel] [PATCH v3 04/14] avcodec/sanm: better ANIMv1 engine support Manuel Lauss 2025-03-17 17:49 ` [FFmpeg-devel] [PATCH v3 05/14] avcodec/sanm: fix codec3 Manuel Lauss 2025-03-17 17:49 ` [FFmpeg-devel] [PATCH v3 06/14] avcodec/sanm: codec2 decoder Manuel Lauss 2025-03-17 17:49 ` [FFmpeg-devel] [PATCH v3 07/14] avcodec/sanm: codec23 decoder Manuel Lauss 2025-03-17 17:49 ` [FFmpeg-devel] [PATCH v3 08/14] avcodec/sanm: codec21 decoder Manuel Lauss 2025-03-17 17:49 ` [FFmpeg-devel] [PATCH v3 09/14] avcodec/sanm: codec4/5/33/34 decoder Manuel Lauss 2025-03-17 17:49 ` [FFmpeg-devel] [PATCH v3 10/14] avcodec/sanm: codec37: reimplement comp4 Manuel Lauss 2025-03-17 17:49 ` [FFmpeg-devel] [PATCH v3 11/14] avcodec/sanm: implement STOR/FTCH for ANIMv1 Manuel Lauss 2025-03-17 17:49 ` [FFmpeg-devel] [PATCH v3 12/14] avcodec/sanm: ignore codec45 Manuel Lauss 2025-03-17 17:49 ` Manuel Lauss [this message] 2025-03-17 17:49 ` [FFmpeg-devel] [PATCH v3 14/14] MAINTAINERS: add Manuel Lauss as sanm.c/smush.c Maintainer Manuel Lauss
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