lavc/rawdec: Use AV_PIX_FMT_PAL8 for 1-bit raw QuickTime video

Match the use of AV_PIX_FMT_PAL8 for 1-bit QuickTime Animation in
lavc/qtrle. To reiterate, 1-bit video is not necessary black & white in
QuickTime, merely bi-level. The two colors can be any color. The palette,
either included in the sample description, or the default Macintosh
palette (black & white for 1-bit video) will be set in lavf/qtpalette.
See the QuickTime File Format Specification for details.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavcodec/raw.c

@@ -255,13 +255,13 @@ const PixelFormatTag avpriv_pix_fmt_bps_avi[] = {
 };
 
 const PixelFormatTag avpriv_pix_fmt_bps_mov[] = {
-    { AV_PIX_FMT_MONOWHITE, 1 },
+    { AV_PIX_FMT_PAL8,      1 },
     { AV_PIX_FMT_PAL8,      2 },
     { AV_PIX_FMT_PAL8,      4 },
     { AV_PIX_FMT_PAL8,      8 },
     { AV_PIX_FMT_RGB555BE, 16 },
     { AV_PIX_FMT_RGB24,    24 },
     { AV_PIX_FMT_ARGB,     32 },
-    { AV_PIX_FMT_MONOWHITE,33 },
+    { AV_PIX_FMT_PAL8,     33 },
     { AV_PIX_FMT_NONE,      0 },
 };

libavcodec/rawdec.c

@@ -41,7 +41,7 @@ typedef struct RawVideoContext {
     AVBufferRef *palette;
     int frame_size;  /* size of the frame in bytes */
     int flip;
-    int is_2_4_bpp; // 2 or 4 bpp raw in avi/mov
+    int is_1_2_4_bpp; // 1 bpp raw in mov, and 2 or 4 bpp raw in avi/mov
     int is_yuv2;
     int is_lt_16bpp; // 16bpp pixfmt and bits_per_coded_sample < 16
     int tff;
@@ -159,12 +159,13 @@ static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame,
 
     AVFrame   *frame   = data;
 
-    if ((avctx->bits_per_coded_sample == 4 || avctx->bits_per_coded_sample == 2) &&
+    if ((avctx->bits_per_coded_sample == 4 || avctx->bits_per_coded_sample == 2
+            || avctx->bits_per_coded_sample == 1) &&
         avctx->pix_fmt == AV_PIX_FMT_PAL8 &&
        (!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' '))) {
-        context->is_2_4_bpp = 1;
+        context->is_1_2_4_bpp = 1;
         context->frame_size = av_image_get_buffer_size(avctx->pix_fmt,
-                                                       FFALIGN(avctx->width, 16),
+                                                       FFALIGN(avctx->width, 32),
                                                        avctx->height, 1);
     } else {
         context->is_lt_16bpp = av_get_bits_per_pixel(desc) == 16 && avctx->bits_per_coded_sample && avctx->bits_per_coded_sample < 16;
@@ -174,7 +175,7 @@ static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame,
     if (context->frame_size < 0)
         return context->frame_size;
 
-    need_copy = !avpkt->buf || context->is_2_4_bpp || context->is_yuv2 || context->is_lt_16bpp;
+    need_copy = !avpkt->buf || context->is_1_2_4_bpp || context->is_yuv2 || context->is_lt_16bpp;
 
     frame->pict_type        = AV_PICTURE_TYPE_I;
     frame->key_frame        = 1;
@@ -201,8 +202,8 @@ static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame,
     if (!frame->buf[0])
         return AVERROR(ENOMEM);
 
-    //2bpp and 4bpp raw in avi and mov (yes this is ugly ...)
-    if (context->is_2_4_bpp) {
+    // 1 bpp raw in mov, and 2 or 4 bpp raw in avi/mov
+    if (context->is_1_2_4_bpp) {
         int i;
         uint8_t *dst = frame->buf[0]->data;
         buf_size = context->frame_size - AVPALETTE_SIZE;
@@ -212,8 +213,7 @@ static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame,
                 dst[2 * i + 1] = buf[i] & 15;
             }
             linesize_align = 8;
-        } else {
-            av_assert0(avctx->bits_per_coded_sample == 2);
+        } else if (avctx->bits_per_coded_sample == 2) {
             for (i = 0; 4 * i + 3 < buf_size && i<avpkt->size; i++) {
                 dst[4 * i + 0] = buf[i] >> 6;
                 dst[4 * i + 1] = buf[i] >> 4 & 3;
@@ -221,6 +221,19 @@ static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame,
                 dst[4 * i + 3] = buf[i]      & 3;
             }
             linesize_align = 16;
+        } else {
+            av_assert0(avctx->bits_per_coded_sample == 1);
+            for (i = 0; 8 * i + 7 < buf_size && i<avpkt->size; i++) {
+                dst[8 * i + 0] = buf[i] >> 7 & 1;
+                dst[8 * i + 1] = buf[i] >> 6 & 1;
+                dst[8 * i + 2] = buf[i] >> 5 & 1;
+                dst[8 * i + 3] = buf[i] >> 4 & 1;
+                dst[8 * i + 4] = buf[i] >> 3 & 1;
+                dst[8 * i + 5] = buf[i] >> 2 & 1;
+                dst[8 * i + 6] = buf[i] >> 1 & 1;
+                dst[8 * i + 7] = buf[i]      & 1;
+            }
+            linesize_align = 32;
         }
         buf = dst;
     } else if (context->is_lt_16bpp) {