On Sun, 11 Feb 2024, Connor Worley wrote:

This change decouples the frame dimensions from avctx, which is useful
for DXV decoding, and fixes incorrect behavior in the existing
implementation.

Keep in mind that avctx->coded_width/height can change on a per-frame basis. So most likely it is better to assign width/height right before the call to ff_texturedsp_exec*

Regards,
Marton


Tested with `make fate THREADS=7` and
`make fate THREADS=7 THREAD_TYPE=slice`.

Signed-off-by: Connor Worley <connorbwor...@gmail.com>
---
libavcodec/dds.c                 |  3 +++
libavcodec/dxv.c                 | 19 ++++++++++---------
libavcodec/dxvenc.c              |  3 +++
libavcodec/hapdec.c              |  5 +++++
libavcodec/hapenc.c              |  3 +++
libavcodec/texturedsp.h          |  1 +
libavcodec/texturedsp_template.c |  4 ++--
libavcodec/vbndec.c              |  3 +++
libavcodec/vbnenc.c              |  3 +++
9 files changed, 33 insertions(+), 11 deletions(-)

diff --git a/libavcodec/dds.c b/libavcodec/dds.c
index 67e2325a2a..83f51be802 100644
--- a/libavcodec/dds.c
+++ b/libavcodec/dds.c
@@ -339,6 +339,9 @@ static int parse_pixel_format(AVCodecContext *avctx)
            av_log(avctx, AV_LOG_ERROR, "Unsupported %s fourcc.\n", 
av_fourcc2str(fourcc));
            return AVERROR_INVALIDDATA;
        }
+
+        ctx->dec.width  = avctx->coded_width;
+        ctx->dec.height = avctx->coded_height;
    } else if (ctx->paletted) {
        if (bpp == 8) {
            avctx->pix_fmt = AV_PIX_FMT_PAL8;
diff --git a/libavcodec/dxv.c b/libavcodec/dxv.c
index 2eca14c129..4eaa6dc224 100644
--- a/libavcodec/dxv.c
+++ b/libavcodec/dxv.c
@@ -843,7 +843,6 @@ static int dxv_decode(AVCodecContext *avctx, AVFrame *frame,
{
    DXVContext *ctx = avctx->priv_data;
    GetByteContext *gbc = &ctx->gbc;
-    AVCodecContext cavctx = *avctx;
    TextureDSPThreadContext texdsp_ctx, ctexdsp_ctx;
    int (*decompress_tex)(AVCodecContext *avctx);
    const char *msgcomp, *msgtext;
@@ -854,9 +853,6 @@ static int dxv_decode(AVCodecContext *avctx, AVFrame *frame,

    bytestream2_init(gbc, avpkt->data, avpkt->size);

-    cavctx.coded_height = avctx->coded_height / 2;
-    cavctx.coded_width  = avctx->coded_width  / 2;
-
    avctx->pix_fmt = AV_PIX_FMT_RGBA;
    avctx->colorspace = AVCOL_SPC_RGB;

@@ -943,7 +939,12 @@ static int dxv_decode(AVCodecContext *avctx, AVFrame 
*frame,
    texdsp_ctx.slice_count  = av_clip(avctx->thread_count, 1,
                                      avctx->coded_height / TEXTURE_BLOCK_H);
    ctexdsp_ctx.slice_count = av_clip(avctx->thread_count, 1,
-                                      cavctx.coded_height / TEXTURE_BLOCK_H);
+                                      avctx->coded_height / 2 / 
TEXTURE_BLOCK_H);
+    texdsp_ctx.width   = avctx->coded_width;
+    texdsp_ctx.height  = avctx->coded_height;
+    ctexdsp_ctx.width  = avctx->coded_width  / 2;
+    ctexdsp_ctx.height = avctx->coded_height / 2;
+
    /* New header is 12 bytes long. */
    if (!old_type) {
        version_major = bytestream2_get_byte(gbc) - 1;
@@ -979,8 +980,8 @@ static int dxv_decode(AVCodecContext *avctx, AVFrame *frame,
    if (avctx->pix_fmt != AV_PIX_FMT_RGBA) {
        int i;

-        ctx->ctex_size = cavctx.coded_width  / ctexdsp_ctx.raw_ratio *
-                         cavctx.coded_height / TEXTURE_BLOCK_H *
+        ctx->ctex_size = avctx->coded_width  / 2 / ctexdsp_ctx.raw_ratio *
+                         avctx->coded_height / 2 / TEXTURE_BLOCK_H *
                         ctexdsp_ctx.tex_ratio;

        ctx->op_size[0] = avctx->coded_width * avctx->coded_height / 16;
@@ -1022,13 +1023,13 @@ static int dxv_decode(AVCodecContext *avctx, AVFrame 
*frame,
        ctexdsp_ctx.tex_data.in    = ctx->ctex_data;
        ctexdsp_ctx.frame_data.out = frame->data[2];
        ctexdsp_ctx.stride         = frame->linesize[2];
-        ret = ff_texturedsp_exec_decompress_threads(&cavctx, &ctexdsp_ctx);
+        ret = ff_texturedsp_exec_decompress_threads(avctx, &ctexdsp_ctx);
        if (ret < 0)
            return ret;
        ctexdsp_ctx.tex_data.in    = ctx->ctex_data + ctexdsp_ctx.tex_ratio / 2;
        ctexdsp_ctx.frame_data.out = frame->data[1];
        ctexdsp_ctx.stride         = frame->linesize[1];
-        ret = ff_texturedsp_exec_decompress_threads(&cavctx, &ctexdsp_ctx);
+        ret = ff_texturedsp_exec_decompress_threads(avctx, &ctexdsp_ctx);
        if (ret < 0)
            return ret;
        /* fallthrough */
diff --git a/libavcodec/dxvenc.c b/libavcodec/dxvenc.c
index bb2c2f8526..62ac812226 100644
--- a/libavcodec/dxvenc.c
+++ b/libavcodec/dxvenc.c
@@ -298,6 +298,9 @@ static av_cold int dxv_init(AVCodecContext *avctx)
                    ctx->enc.tex_ratio;
    ctx->enc.slice_count = av_clip(avctx->thread_count, 1, avctx->height / 
TEXTURE_BLOCK_H);

+    ctx->enc.width  = avctx->width;
+    ctx->enc.height = avctx->height;
+
    ctx->tex_data = av_malloc(ctx->tex_size);
    if (!ctx->tex_data) {
        return AVERROR(ENOMEM);
diff --git a/libavcodec/hapdec.c b/libavcodec/hapdec.c
index 3a848e9f67..cca15afa15 100644
--- a/libavcodec/hapdec.c
+++ b/libavcodec/hapdec.c
@@ -399,6 +399,11 @@ static av_cold int hap_init(AVCodecContext *avctx)
        return AVERROR_DECODER_NOT_FOUND;
    }

+    ctx->dec[0].width  = avctx->coded_width;
+    ctx->dec[0].height = avctx->coded_height;
+    ctx->dec[1].width  = avctx->coded_width;
+    ctx->dec[1].height = avctx->coded_height;
+
    av_log(avctx, AV_LOG_DEBUG, "%s texture\n", texture_name);

    return 0;
diff --git a/libavcodec/hapenc.c b/libavcodec/hapenc.c
index 1464f743d6..ce537c67c9 100644
--- a/libavcodec/hapenc.c
+++ b/libavcodec/hapenc.c
@@ -276,6 +276,9 @@ static av_cold int hap_init(AVCodecContext *avctx)
    ctx->enc.raw_ratio = 16;
    ctx->enc.slice_count = av_clip(avctx->thread_count, 1, avctx->height / 
TEXTURE_BLOCK_H);

+    ctx->enc.width  = avctx->width;
+    ctx->enc.height = avctx->height;
+
    /* Texture compression ratio is constant, so can we computer
     * beforehand the final size of the uncompressed buffer. */
    ctx->tex_size   = avctx->width  / TEXTURE_BLOCK_W *
diff --git a/libavcodec/texturedsp.h b/libavcodec/texturedsp.h
index 86c8eea02d..0bf49e8729 100644
--- a/libavcodec/texturedsp.h
+++ b/libavcodec/texturedsp.h
@@ -72,6 +72,7 @@ typedef struct TextureDSPThreadContext {
        uint8_t *out;            // Output frame data
    } frame_data;
    ptrdiff_t stride;            // Frame linesize
+    int width, height;           // Frame width / height
    union {
        const uint8_t *in;       // Compressed texture for decompression
        uint8_t *out;            // Compressed texture of compression
diff --git a/libavcodec/texturedsp_template.c b/libavcodec/texturedsp_template.c
index 9589cc4187..b9caf494cc 100644
--- a/libavcodec/texturedsp_template.c
+++ b/libavcodec/texturedsp_template.c
@@ -27,8 +27,8 @@ static int exec_func(AVCodecContext *avctx, void *arg,
{
    const TextureDSPThreadContext *ctx = arg;
    uint8_t *d = ctx->tex_data.out;
-    int w_block = avctx->coded_width / TEXTURE_BLOCK_W;
-    int h_block = avctx->coded_height / TEXTURE_BLOCK_H;
+    int w_block = ctx->width  / TEXTURE_BLOCK_W;
+    int h_block = ctx->height / TEXTURE_BLOCK_H;
    int x, y;
    int start_slice, end_slice;
    int base_blocks_per_slice = h_block / ctx->slice_count;
diff --git a/libavcodec/vbndec.c b/libavcodec/vbndec.c
index 83ce9e994b..a044c9be3c 100644
--- a/libavcodec/vbndec.c
+++ b/libavcodec/vbndec.c
@@ -131,6 +131,9 @@ static int vbn_decode_frame(AVCodecContext *avctx,
            ctx->dec.tex_ratio = 16;
            linesize = avctx->coded_width;
        }
+
+        ctx->dec.width  = avctx->coded_width;
+        ctx->dec.height = avctx->coded_height;
    } else {
        av_log(avctx, AV_LOG_ERROR, "Unsupported VBN format: 0x%02x\n", format);
        return AVERROR_PATCHWELCOME;
diff --git a/libavcodec/vbnenc.c b/libavcodec/vbnenc.c
index abdc33c2c9..ce413e028b 100644
--- a/libavcodec/vbnenc.c
+++ b/libavcodec/vbnenc.c
@@ -88,6 +88,9 @@ static int vbn_encode(AVCodecContext *avctx, AVPacket *pkt,
        return AVERROR(EINVAL);
    }

+    ctx->enc.width  = avctx->width;
+    ctx->enc.height = avctx->height;
+
    pkt_size = VBN_HEADER_SIZE + linesize * frame->height;
    if (pkt_size > INT_MAX)
        return AVERROR(EINVAL);
--
2.43.1

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