Split parts of dvdata.h into dvdata.c, this ensures that things like

work_chunks_* and dv_idct_factor_* variables appear only once in the binary
instead of 3 times.
Saves 3264 bytes in .rodata and 312416 bytes in .bss on x86_64.

Originally committed as revision 20246 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 285 insertions, 0 deletions

diff --git a/libavcodec/dvdata.c b/libavcodec/dvdata.c
new file mode 100644
index 0000000..5110872
--- /dev/null
+++ b/libavcodec/dvdata.c
@@ -0,0 +1,285 @@
+/*
+ * Constants for DV codec
+ * Copyright (c) 2002 Fabrice Bellard
+ *
+ * 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 libavcodec/dvdata.c
+ * Constants for DV codec.
+ */
+
+#include "libavutil/rational.h"
+#include "avcodec.h"
+#include "dvdata.h"
+
+static DVwork_chunk work_chunks_dv25pal   [1*12*27];
+static DVwork_chunk work_chunks_dv25pal411[1*12*27];
+static DVwork_chunk work_chunks_dv25ntsc  [1*10*27];
+static DVwork_chunk work_chunks_dv50pal   [2*12*27];
+static DVwork_chunk work_chunks_dv50ntsc  [2*10*27];
+static DVwork_chunk work_chunks_dv100palp [2*12*27];
+static DVwork_chunk work_chunks_dv100ntscp[2*10*27];
+static DVwork_chunk work_chunks_dv100pali [4*12*27];
+static DVwork_chunk work_chunks_dv100ntsci[4*10*27];
+
+static uint32_t dv_idct_factor_sd    [2*2*22*64];
+static uint32_t dv_idct_factor_hd1080[2*4*16*64];
+static uint32_t dv_idct_factor_hd720 [2*4*16*64];
+
+static const DVprofile dv_profiles[] = {
+    { .dsf = 0,
+      .video_stype = 0x0,
+      .frame_size = 120000,        /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
+      .difseg_size = 10,
+      .n_difchan = 1,
+      .time_base = { 1001, 30000 },
+      .ltc_divisor = 30,
+      .height = 480,
+      .width = 720,
+      .sar = {{10, 11}, {40, 33}},
+      .work_chunks = &work_chunks_dv25ntsc[0],
+      .idct_factor = &dv_idct_factor_sd[0],
+      .pix_fmt = PIX_FMT_YUV411P,
+      .bpm = 6,
+      .block_sizes = block_sizes_dv2550,
+      .audio_stride = 90,
+      .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
+      .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
+      .audio_shuffle = dv_audio_shuffle525,
+    },
+    { .dsf = 1,
+      .video_stype = 0x0,
+      .frame_size = 144000,        /* IEC 61834 - 625/50 (PAL) */
+      .difseg_size = 12,
+      .n_difchan = 1,
+      .time_base = { 1, 25 },
+      .ltc_divisor = 25,
+      .height = 576,
+      .width = 720,
+      .sar = {{59, 54}, {118, 81}},
+      .work_chunks = &work_chunks_dv25pal[0],
+      .idct_factor = &dv_idct_factor_sd[0],
+      .pix_fmt = PIX_FMT_YUV420P,
+      .bpm = 6,
+      .block_sizes = block_sizes_dv2550,
+      .audio_stride = 108,
+      .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
+      .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
+      .audio_shuffle = dv_audio_shuffle625,
+    },
+    { .dsf = 1,
+      .video_stype = 0x0,
+      .frame_size = 144000,        /* SMPTE-314M - 625/50 (PAL) */
+      .difseg_size = 12,
+      .n_difchan = 1,
+      .time_base = { 1, 25 },
+      .ltc_divisor = 25,
+      .height = 576,
+      .width = 720,
+      .sar = {{59, 54}, {118, 81}},
+      .work_chunks = &work_chunks_dv25pal411[0],
+      .idct_factor = &dv_idct_factor_sd[0],
+      .pix_fmt = PIX_FMT_YUV411P,
+      .bpm = 6,
+      .block_sizes = block_sizes_dv2550,
+      .audio_stride = 108,
+      .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
+      .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
+      .audio_shuffle = dv_audio_shuffle625,
+    },
+    { .dsf = 0,
+      .video_stype = 0x4,
+      .frame_size = 240000,        /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
+      .difseg_size = 10,           /* also known as "DVCPRO50" */
+      .n_difchan = 2,
+      .time_base = { 1001, 30000 },
+      .ltc_divisor = 30,
+      .height = 480,
+      .width = 720,
+      .sar = {{10, 11}, {40, 33}},
+      .work_chunks = &work_chunks_dv50ntsc[0],
+      .idct_factor = &dv_idct_factor_sd[0],
+      .pix_fmt = PIX_FMT_YUV422P,
+      .bpm = 6,
+      .block_sizes = block_sizes_dv2550,
+      .audio_stride = 90,
+      .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
+      .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
+      .audio_shuffle = dv_audio_shuffle525,
+    },
+    { .dsf = 1,
+      .video_stype = 0x4,
+      .frame_size = 288000,        /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
+      .difseg_size = 12,           /* also known as "DVCPRO50" */
+      .n_difchan = 2,
+      .time_base = { 1, 25 },
+      .ltc_divisor = 25,
+      .height = 576,
+      .width = 720,
+      .sar = {{59, 54}, {118, 81}},
+      .work_chunks = &work_chunks_dv50pal[0],
+      .idct_factor = &dv_idct_factor_sd[0],
+      .pix_fmt = PIX_FMT_YUV422P,
+      .bpm = 6,
+      .block_sizes = block_sizes_dv2550,
+      .audio_stride = 108,
+      .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
+      .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
+      .audio_shuffle = dv_audio_shuffle625,
+    },
+    { .dsf = 0,
+      .video_stype = 0x14,
+      .frame_size = 480000,        /* SMPTE-370M - 1080i60 100 Mbps */
+      .difseg_size = 10,           /* also known as "DVCPRO HD" */
+      .n_difchan = 4,
+      .time_base = { 1001, 30000 },
+      .ltc_divisor = 30,
+      .height = 1080,
+      .width = 1280,
+      .sar = {{1, 1}, {1, 1}},
+      .work_chunks = &work_chunks_dv100ntsci[0],
+      .idct_factor = &dv_idct_factor_hd1080[0],
+      .pix_fmt = PIX_FMT_YUV422P,
+      .bpm = 8,
+      .block_sizes = block_sizes_dv100,
+      .audio_stride = 90,
+      .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
+      .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
+      .audio_shuffle = dv_audio_shuffle525,
+    },
+    { .dsf = 1,
+      .video_stype = 0x14,
+      .frame_size = 576000,        /* SMPTE-370M - 1080i50 100 Mbps */
+      .difseg_size = 12,           /* also known as "DVCPRO HD" */
+      .n_difchan = 4,
+      .time_base = { 1, 25 },
+      .ltc_divisor = 25,
+      .height = 1080,
+      .width = 1440,
+      .sar = {{1, 1}, {1, 1}},
+      .work_chunks = &work_chunks_dv100pali[0],
+      .idct_factor = &dv_idct_factor_hd1080[0],
+      .pix_fmt = PIX_FMT_YUV422P,
+      .bpm = 8,
+      .block_sizes = block_sizes_dv100,
+      .audio_stride = 108,
+      .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
+      .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
+      .audio_shuffle = dv_audio_shuffle625,
+    },
+    { .dsf = 0,
+      .video_stype = 0x18,
+      .frame_size = 240000,        /* SMPTE-370M - 720p60 100 Mbps */
+      .difseg_size = 10,           /* also known as "DVCPRO HD" */
+      .n_difchan = 2,
+      .time_base = { 1001, 60000 },
+      .ltc_divisor = 60,
+      .height = 720,
+      .width = 960,
+      .sar = {{1, 1}, {1, 1}},
+      .work_chunks = &work_chunks_dv100ntscp[0],
+      .idct_factor = &dv_idct_factor_hd720[0],
+      .pix_fmt = PIX_FMT_YUV422P,
+      .bpm = 8,
+      .block_sizes = block_sizes_dv100,
+      .audio_stride = 90,
+      .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
+      .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
+      .audio_shuffle = dv_audio_shuffle525,
+    },
+    { .dsf = 1,
+      .video_stype = 0x18,
+      .frame_size = 288000,        /* SMPTE-370M - 720p50 100 Mbps */
+      .difseg_size = 12,           /* also known as "DVCPRO HD" */
+      .n_difchan = 2,
+      .time_base = { 1, 50 },
+      .ltc_divisor = 50,
+      .height = 720,
+      .width = 960,
+      .sar = {{1, 1}, {1, 1}},
+      .work_chunks = &work_chunks_dv100palp[0],
+      .idct_factor = &dv_idct_factor_hd720[0],
+      .pix_fmt = PIX_FMT_YUV422P,
+      .bpm = 8,
+      .block_sizes = block_sizes_dv100,
+      .audio_stride = 90,
+      .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
+      .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
+      .audio_shuffle = dv_audio_shuffle625,
+    },
+    { .dsf = 1,
+      .video_stype = 0x1,
+      .frame_size = 144000,        /* IEC 61883-5 - 625/50 (PAL) */
+      .difseg_size = 12,
+      .n_difchan = 1,
+      .time_base = { 1, 25 },
+      .ltc_divisor = 25,
+      .height = 576,
+      .width = 720,
+      .sar = {{59, 54}, {118, 81}},
+      .work_chunks = &work_chunks_dv25pal[0],
+      .idct_factor = &dv_idct_factor_sd[0],
+      .pix_fmt = PIX_FMT_YUV420P,
+      .bpm = 6,
+      .block_sizes = block_sizes_dv2550,
+      .audio_stride = 108,
+      .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
+      .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
+      .audio_shuffle = dv_audio_shuffle625,
+    }
+};
+
+const DVprofile* ff_dv_frame_profile(const DVprofile *sys,
+                                  const uint8_t* frame, unsigned buf_size)
+{
+   int i;
+
+   int dsf = (frame[3] & 0x80) >> 7;
+
+   int stype = frame[80*5 + 48 + 3] & 0x1f;
+
+   /* 576i50 25Mbps 4:1:1 is a special case */
+   if (dsf == 1 && stype == 0 && frame[5] & 0x07) {
+       return &dv_profiles[2];
+   }
+
+   for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
+       if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
+           return &dv_profiles[i];
+
+   /* check if old sys matches and assumes corrupted input */
+   if (sys && buf_size == sys->frame_size)
+       return sys;
+
+   return NULL;
+}
+
+const DVprofile* ff_dv_codec_profile(AVCodecContext* codec)
+{
+    int i;
+
+    for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
+       if (codec->height  == dv_profiles[i].height  &&
+           codec->pix_fmt == dv_profiles[i].pix_fmt &&
+           codec->width   == dv_profiles[i].width)
+               return &dv_profiles[i];
+
+    return NULL;
+}
+