OBJS-$(CONFIG_BINKAUDIO_RDFT_DECODER) += binkaudio.o wma.o wma_common.o
OBJS-$(CONFIG_BMP_DECODER) += bmp.o msrledec.o
OBJS-$(CONFIG_BMP_ENCODER) += bmpenc.o
-OBJS-$(CONFIG_BMV_VIDEO_DECODER) += bmv.o
-OBJS-$(CONFIG_BMV_AUDIO_DECODER) += bmv.o
+OBJS-$(CONFIG_BMV_AUDIO_DECODER) += bmvaudio.o
+OBJS-$(CONFIG_BMV_VIDEO_DECODER) += bmvvideo.o
OBJS-$(CONFIG_BRENDER_PIX_DECODER) += brenderpix.o
OBJS-$(CONFIG_C93_DECODER) += c93.o
OBJS-$(CONFIG_CAVS_DECODER) += cavs.o cavsdec.o cavsdsp.o \
+++ /dev/null
-/*
- * Discworld II BMV video and audio decoder
- * Copyright (c) 2011 Konstantin Shishkov
- *
- * This file is part of Libav.
- *
- * Libav 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.
- *
- * Libav 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 Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "libavutil/channel_layout.h"
-#include "avcodec.h"
-#include "bytestream.h"
-#include "internal.h"
-
-enum BMVFlags{
- BMV_NOP = 0,
- BMV_END,
- BMV_DELTA,
- BMV_INTRA,
-
- BMV_SCROLL = 0x04,
- BMV_PALETTE = 0x08,
- BMV_COMMAND = 0x10,
- BMV_AUDIO = 0x20,
- BMV_EXT = 0x40,
- BMV_PRINT = 0x80
-};
-
-#define SCREEN_WIDE 640
-#define SCREEN_HIGH 429
-
-typedef struct BMVDecContext {
- AVCodecContext *avctx;
-
- uint8_t *frame, frame_base[SCREEN_WIDE * (SCREEN_HIGH + 1)];
- uint32_t pal[256];
- const uint8_t *stream;
-} BMVDecContext;
-
-#define NEXT_BYTE(v) v = forward ? v + 1 : v - 1;
-
-static int decode_bmv_frame(const uint8_t *source, int src_len, uint8_t *frame, int frame_off)
-{
- unsigned val, saved_val = 0;
- int tmplen = src_len;
- const uint8_t *src, *source_end = source + src_len;
- uint8_t *frame_end = frame + SCREEN_WIDE * SCREEN_HIGH;
- uint8_t *dst, *dst_end;
- int len, mask;
- int forward = (frame_off <= -SCREEN_WIDE) || (frame_off >= 0);
- int read_two_nibbles, flag;
- int advance_mode;
- int mode = 0;
- int i;
-
- if (src_len <= 0)
- return AVERROR_INVALIDDATA;
-
- if (forward) {
- src = source;
- dst = frame;
- dst_end = frame_end;
- } else {
- src = source + src_len - 1;
- dst = frame_end - 1;
- dst_end = frame - 1;
- }
- for (;;) {
- int shift = 0;
- flag = 0;
-
- /* The mode/len decoding is a bit strange:
- * values are coded as variable-length codes with nibble units,
- * code end is signalled by two top bits in the nibble being nonzero.
- * And since data is bytepacked and we read two nibbles at a time,
- * we may get a nibble belonging to the next code.
- * Hence this convoluted loop.
- */
- if (!mode || (tmplen == 4)) {
- if (src < source || src >= source_end)
- return AVERROR_INVALIDDATA;
- val = *src;
- read_two_nibbles = 1;
- } else {
- val = saved_val;
- read_two_nibbles = 0;
- }
- if (!(val & 0xC)) {
- for (;;) {
- if (!read_two_nibbles) {
- if (src < source || src >= source_end)
- return AVERROR_INVALIDDATA;
- shift += 2;
- val |= *src << shift;
- if (*src & 0xC)
- break;
- }
- // two upper bits of the nibble is zero,
- // so shift top nibble value down into their place
- read_two_nibbles = 0;
- shift += 2;
- mask = (1 << shift) - 1;
- val = ((val >> 2) & ~mask) | (val & mask);
- NEXT_BYTE(src);
- if ((val & (0xC << shift))) {
- flag = 1;
- break;
- }
- }
- } else if (mode) {
- flag = tmplen != 4;
- }
- if (flag) {
- tmplen = 4;
- } else {
- saved_val = val >> (4 + shift);
- tmplen = 0;
- val &= (1 << (shift + 4)) - 1;
- NEXT_BYTE(src);
- }
- advance_mode = val & 1;
- len = (val >> 1) - 1;
- mode += 1 + advance_mode;
- if (mode >= 4)
- mode -= 3;
- if (len <= 0 || FFABS(dst_end - dst) < len)
- return AVERROR_INVALIDDATA;
- switch (mode) {
- case 1:
- if (forward) {
- if (dst - frame + SCREEN_WIDE < frame_off ||
- dst - frame + SCREEN_WIDE + frame_off < 0 ||
- frame_end - dst < frame_off + len ||
- frame_end - dst < len)
- return AVERROR_INVALIDDATA;
- for (i = 0; i < len; i++)
- dst[i] = dst[frame_off + i];
- dst += len;
- } else {
- dst -= len;
- if (dst - frame + SCREEN_WIDE < frame_off ||
- dst - frame + SCREEN_WIDE + frame_off < 0 ||
- frame_end - dst < frame_off + len ||
- frame_end - dst < len)
- return AVERROR_INVALIDDATA;
- for (i = len - 1; i >= 0; i--)
- dst[i] = dst[frame_off + i];
- }
- break;
- case 2:
- if (forward) {
- if (source + src_len - src < len)
- return AVERROR_INVALIDDATA;
- memcpy(dst, src, len);
- dst += len;
- src += len;
- } else {
- if (src - source < len)
- return AVERROR_INVALIDDATA;
- dst -= len;
- src -= len;
- memcpy(dst, src, len);
- }
- break;
- case 3:
- val = forward ? dst[-1] : dst[1];
- if (forward) {
- memset(dst, val, len);
- dst += len;
- } else {
- dst -= len;
- memset(dst, val, len);
- }
- break;
- default:
- break;
- }
- if (dst == dst_end)
- return 0;
- }
- return 0;
-}
-
-static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
- AVPacket *pkt)
-{
- BMVDecContext * const c = avctx->priv_data;
- AVFrame *frame = data;
- int type, scr_off;
- int i, ret;
- uint8_t *srcptr, *outptr;
-
- c->stream = pkt->data;
- type = bytestream_get_byte(&c->stream);
- if (type & BMV_AUDIO) {
- int blobs = bytestream_get_byte(&c->stream);
- if (pkt->size < blobs * 65 + 2) {
- av_log(avctx, AV_LOG_ERROR, "Audio data doesn't fit in frame\n");
- return AVERROR_INVALIDDATA;
- }
- c->stream += blobs * 65;
- }
- if (type & BMV_COMMAND) {
- int command_size = (type & BMV_PRINT) ? 8 : 10;
- if (c->stream - pkt->data + command_size > pkt->size) {
- av_log(avctx, AV_LOG_ERROR, "Command data doesn't fit in frame\n");
- return AVERROR_INVALIDDATA;
- }
- c->stream += command_size;
- }
- if (type & BMV_PALETTE) {
- if (c->stream - pkt->data > pkt->size - 768) {
- av_log(avctx, AV_LOG_ERROR, "Palette data doesn't fit in frame\n");
- return AVERROR_INVALIDDATA;
- }
- for (i = 0; i < 256; i++)
- c->pal[i] = bytestream_get_be24(&c->stream);
- }
- if (type & BMV_SCROLL) {
- if (c->stream - pkt->data > pkt->size - 2) {
- av_log(avctx, AV_LOG_ERROR, "Screen offset data doesn't fit in frame\n");
- return AVERROR_INVALIDDATA;
- }
- scr_off = (int16_t)bytestream_get_le16(&c->stream);
- } else if ((type & BMV_INTRA) == BMV_INTRA) {
- scr_off = -640;
- } else {
- scr_off = 0;
- }
-
- if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return ret;
- }
-
- if (decode_bmv_frame(c->stream, pkt->size - (c->stream - pkt->data), c->frame, scr_off)) {
- av_log(avctx, AV_LOG_ERROR, "Error decoding frame data\n");
- return AVERROR_INVALIDDATA;
- }
-
- memcpy(frame->data[1], c->pal, AVPALETTE_SIZE);
- frame->palette_has_changed = type & BMV_PALETTE;
-
- outptr = frame->data[0];
- srcptr = c->frame;
-
- for (i = 0; i < avctx->height; i++) {
- memcpy(outptr, srcptr, avctx->width);
- srcptr += avctx->width;
- outptr += frame->linesize[0];
- }
-
- *got_frame = 1;
-
- /* always report that the buffer was completely consumed */
- return pkt->size;
-}
-
-static av_cold int decode_init(AVCodecContext *avctx)
-{
- BMVDecContext * const c = avctx->priv_data;
-
- c->avctx = avctx;
- avctx->pix_fmt = AV_PIX_FMT_PAL8;
-
- c->frame = c->frame_base + 640;
-
- return 0;
-}
-
-static const int bmv_aud_mults[16] = {
- 16512, 8256, 4128, 2064, 1032, 516, 258, 192, 129, 88, 64, 56, 48, 40, 36, 32
-};
-
-static av_cold int bmv_aud_decode_init(AVCodecContext *avctx)
-{
- avctx->channels = 2;
- avctx->channel_layout = AV_CH_LAYOUT_STEREO;
- avctx->sample_fmt = AV_SAMPLE_FMT_S16;
-
- return 0;
-}
-
-static int bmv_aud_decode_frame(AVCodecContext *avctx, void *data,
- int *got_frame_ptr, AVPacket *avpkt)
-{
- AVFrame *frame = data;
- const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
- int blocks = 0, total_blocks, i;
- int ret;
- int16_t *output_samples;
- int scale[2];
-
- total_blocks = *buf++;
- if (buf_size < total_blocks * 65 + 1) {
- av_log(avctx, AV_LOG_ERROR, "expected %d bytes, got %d\n",
- total_blocks * 65 + 1, buf_size);
- return AVERROR_INVALIDDATA;
- }
-
- /* get output buffer */
- frame->nb_samples = total_blocks * 32;
- if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return ret;
- }
- output_samples = (int16_t *)frame->data[0];
-
- for (blocks = 0; blocks < total_blocks; blocks++) {
- uint8_t code = *buf++;
- code = (code >> 1) | (code << 7);
- scale[0] = bmv_aud_mults[code & 0xF];
- scale[1] = bmv_aud_mults[code >> 4];
- for (i = 0; i < 32; i++) {
- *output_samples++ = av_clip_int16((scale[0] * (int8_t)*buf++) >> 5);
- *output_samples++ = av_clip_int16((scale[1] * (int8_t)*buf++) >> 5);
- }
- }
-
- *got_frame_ptr = 1;
-
- return buf_size;
-}
-
-AVCodec ff_bmv_video_decoder = {
- .name = "bmv_video",
- .long_name = NULL_IF_CONFIG_SMALL("Discworld II BMV video"),
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_BMV_VIDEO,
- .priv_data_size = sizeof(BMVDecContext),
- .init = decode_init,
- .decode = decode_frame,
- .capabilities = CODEC_CAP_DR1,
-};
-
-AVCodec ff_bmv_audio_decoder = {
- .name = "bmv_audio",
- .long_name = NULL_IF_CONFIG_SMALL("Discworld II BMV audio"),
- .type = AVMEDIA_TYPE_AUDIO,
- .id = AV_CODEC_ID_BMV_AUDIO,
- .init = bmv_aud_decode_init,
- .decode = bmv_aud_decode_frame,
- .capabilities = CODEC_CAP_DR1,
-};
--- /dev/null
+/*
+ * Discworld II BMV audio decoder
+ * Copyright (c) 2011 Konstantin Shishkov
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/channel_layout.h"
+#include "libavutil/common.h"
+
+#include "avcodec.h"
+#include "internal.h"
+
+static const int bmv_aud_mults[16] = {
+ 16512, 8256, 4128, 2064, 1032, 516, 258, 192, 129, 88, 64, 56, 48, 40, 36, 32
+};
+
+static av_cold int bmv_aud_decode_init(AVCodecContext *avctx)
+{
+ avctx->channels = 2;
+ avctx->channel_layout = AV_CH_LAYOUT_STEREO;
+ avctx->sample_fmt = AV_SAMPLE_FMT_S16;
+
+ return 0;
+}
+
+static int bmv_aud_decode_frame(AVCodecContext *avctx, void *data,
+ int *got_frame_ptr, AVPacket *avpkt)
+{
+ AVFrame *frame = data;
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
+ int blocks = 0, total_blocks, i;
+ int ret;
+ int16_t *output_samples;
+ int scale[2];
+
+ total_blocks = *buf++;
+ if (buf_size < total_blocks * 65 + 1) {
+ av_log(avctx, AV_LOG_ERROR, "expected %d bytes, got %d\n",
+ total_blocks * 65 + 1, buf_size);
+ return AVERROR_INVALIDDATA;
+ }
+
+ /* get output buffer */
+ frame->nb_samples = total_blocks * 32;
+ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return ret;
+ }
+ output_samples = (int16_t *)frame->data[0];
+
+ for (blocks = 0; blocks < total_blocks; blocks++) {
+ uint8_t code = *buf++;
+ code = (code >> 1) | (code << 7);
+ scale[0] = bmv_aud_mults[code & 0xF];
+ scale[1] = bmv_aud_mults[code >> 4];
+ for (i = 0; i < 32; i++) {
+ *output_samples++ = av_clip_int16((scale[0] * (int8_t)*buf++) >> 5);
+ *output_samples++ = av_clip_int16((scale[1] * (int8_t)*buf++) >> 5);
+ }
+ }
+
+ *got_frame_ptr = 1;
+
+ return buf_size;
+}
+
+AVCodec ff_bmv_audio_decoder = {
+ .name = "bmv_audio",
+ .long_name = NULL_IF_CONFIG_SMALL("Discworld II BMV audio"),
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = AV_CODEC_ID_BMV_AUDIO,
+ .init = bmv_aud_decode_init,
+ .decode = bmv_aud_decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+};
--- /dev/null
+/*
+ * Discworld II BMV video decoder
+ * Copyright (c) 2011 Konstantin Shishkov
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/common.h"
+
+#include "avcodec.h"
+#include "bytestream.h"
+#include "internal.h"
+
+enum BMVFlags{
+ BMV_NOP = 0,
+ BMV_END,
+ BMV_DELTA,
+ BMV_INTRA,
+
+ BMV_SCROLL = 0x04,
+ BMV_PALETTE = 0x08,
+ BMV_COMMAND = 0x10,
+ BMV_AUDIO = 0x20,
+ BMV_EXT = 0x40,
+ BMV_PRINT = 0x80
+};
+
+#define SCREEN_WIDE 640
+#define SCREEN_HIGH 429
+
+typedef struct BMVDecContext {
+ AVCodecContext *avctx;
+
+ uint8_t *frame, frame_base[SCREEN_WIDE * (SCREEN_HIGH + 1)];
+ uint32_t pal[256];
+ const uint8_t *stream;
+} BMVDecContext;
+
+#define NEXT_BYTE(v) v = forward ? v + 1 : v - 1;
+
+static int decode_bmv_frame(const uint8_t *source, int src_len, uint8_t *frame, int frame_off)
+{
+ unsigned val, saved_val = 0;
+ int tmplen = src_len;
+ const uint8_t *src, *source_end = source + src_len;
+ uint8_t *frame_end = frame + SCREEN_WIDE * SCREEN_HIGH;
+ uint8_t *dst, *dst_end;
+ int len, mask;
+ int forward = (frame_off <= -SCREEN_WIDE) || (frame_off >= 0);
+ int read_two_nibbles, flag;
+ int advance_mode;
+ int mode = 0;
+ int i;
+
+ if (src_len <= 0)
+ return AVERROR_INVALIDDATA;
+
+ if (forward) {
+ src = source;
+ dst = frame;
+ dst_end = frame_end;
+ } else {
+ src = source + src_len - 1;
+ dst = frame_end - 1;
+ dst_end = frame - 1;
+ }
+ for (;;) {
+ int shift = 0;
+ flag = 0;
+
+ /* The mode/len decoding is a bit strange:
+ * values are coded as variable-length codes with nibble units,
+ * code end is signalled by two top bits in the nibble being nonzero.
+ * And since data is bytepacked and we read two nibbles at a time,
+ * we may get a nibble belonging to the next code.
+ * Hence this convoluted loop.
+ */
+ if (!mode || (tmplen == 4)) {
+ if (src < source || src >= source_end)
+ return AVERROR_INVALIDDATA;
+ val = *src;
+ read_two_nibbles = 1;
+ } else {
+ val = saved_val;
+ read_two_nibbles = 0;
+ }
+ if (!(val & 0xC)) {
+ for (;;) {
+ if (!read_two_nibbles) {
+ if (src < source || src >= source_end)
+ return AVERROR_INVALIDDATA;
+ shift += 2;
+ val |= *src << shift;
+ if (*src & 0xC)
+ break;
+ }
+ // two upper bits of the nibble is zero,
+ // so shift top nibble value down into their place
+ read_two_nibbles = 0;
+ shift += 2;
+ mask = (1 << shift) - 1;
+ val = ((val >> 2) & ~mask) | (val & mask);
+ NEXT_BYTE(src);
+ if ((val & (0xC << shift))) {
+ flag = 1;
+ break;
+ }
+ }
+ } else if (mode) {
+ flag = tmplen != 4;
+ }
+ if (flag) {
+ tmplen = 4;
+ } else {
+ saved_val = val >> (4 + shift);
+ tmplen = 0;
+ val &= (1 << (shift + 4)) - 1;
+ NEXT_BYTE(src);
+ }
+ advance_mode = val & 1;
+ len = (val >> 1) - 1;
+ mode += 1 + advance_mode;
+ if (mode >= 4)
+ mode -= 3;
+ if (len <= 0 || FFABS(dst_end - dst) < len)
+ return AVERROR_INVALIDDATA;
+ switch (mode) {
+ case 1:
+ if (forward) {
+ if (dst - frame + SCREEN_WIDE < frame_off ||
+ dst - frame + SCREEN_WIDE + frame_off < 0 ||
+ frame_end - dst < frame_off + len ||
+ frame_end - dst < len)
+ return AVERROR_INVALIDDATA;
+ for (i = 0; i < len; i++)
+ dst[i] = dst[frame_off + i];
+ dst += len;
+ } else {
+ dst -= len;
+ if (dst - frame + SCREEN_WIDE < frame_off ||
+ dst - frame + SCREEN_WIDE + frame_off < 0 ||
+ frame_end - dst < frame_off + len ||
+ frame_end - dst < len)
+ return AVERROR_INVALIDDATA;
+ for (i = len - 1; i >= 0; i--)
+ dst[i] = dst[frame_off + i];
+ }
+ break;
+ case 2:
+ if (forward) {
+ if (source + src_len - src < len)
+ return AVERROR_INVALIDDATA;
+ memcpy(dst, src, len);
+ dst += len;
+ src += len;
+ } else {
+ if (src - source < len)
+ return AVERROR_INVALIDDATA;
+ dst -= len;
+ src -= len;
+ memcpy(dst, src, len);
+ }
+ break;
+ case 3:
+ val = forward ? dst[-1] : dst[1];
+ if (forward) {
+ memset(dst, val, len);
+ dst += len;
+ } else {
+ dst -= len;
+ memset(dst, val, len);
+ }
+ break;
+ default:
+ break;
+ }
+ if (dst == dst_end)
+ return 0;
+ }
+ return 0;
+}
+
+static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
+ AVPacket *pkt)
+{
+ BMVDecContext * const c = avctx->priv_data;
+ AVFrame *frame = data;
+ int type, scr_off;
+ int i, ret;
+ uint8_t *srcptr, *outptr;
+
+ c->stream = pkt->data;
+ type = bytestream_get_byte(&c->stream);
+ if (type & BMV_AUDIO) {
+ int blobs = bytestream_get_byte(&c->stream);
+ if (pkt->size < blobs * 65 + 2) {
+ av_log(avctx, AV_LOG_ERROR, "Audio data doesn't fit in frame\n");
+ return AVERROR_INVALIDDATA;
+ }
+ c->stream += blobs * 65;
+ }
+ if (type & BMV_COMMAND) {
+ int command_size = (type & BMV_PRINT) ? 8 : 10;
+ if (c->stream - pkt->data + command_size > pkt->size) {
+ av_log(avctx, AV_LOG_ERROR, "Command data doesn't fit in frame\n");
+ return AVERROR_INVALIDDATA;
+ }
+ c->stream += command_size;
+ }
+ if (type & BMV_PALETTE) {
+ if (c->stream - pkt->data > pkt->size - 768) {
+ av_log(avctx, AV_LOG_ERROR, "Palette data doesn't fit in frame\n");
+ return AVERROR_INVALIDDATA;
+ }
+ for (i = 0; i < 256; i++)
+ c->pal[i] = bytestream_get_be24(&c->stream);
+ }
+ if (type & BMV_SCROLL) {
+ if (c->stream - pkt->data > pkt->size - 2) {
+ av_log(avctx, AV_LOG_ERROR, "Screen offset data doesn't fit in frame\n");
+ return AVERROR_INVALIDDATA;
+ }
+ scr_off = (int16_t)bytestream_get_le16(&c->stream);
+ } else if ((type & BMV_INTRA) == BMV_INTRA) {
+ scr_off = -640;
+ } else {
+ scr_off = 0;
+ }
+
+ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return ret;
+ }
+
+ if (decode_bmv_frame(c->stream, pkt->size - (c->stream - pkt->data), c->frame, scr_off)) {
+ av_log(avctx, AV_LOG_ERROR, "Error decoding frame data\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ memcpy(frame->data[1], c->pal, AVPALETTE_SIZE);
+ frame->palette_has_changed = type & BMV_PALETTE;
+
+ outptr = frame->data[0];
+ srcptr = c->frame;
+
+ for (i = 0; i < avctx->height; i++) {
+ memcpy(outptr, srcptr, avctx->width);
+ srcptr += avctx->width;
+ outptr += frame->linesize[0];
+ }
+
+ *got_frame = 1;
+
+ /* always report that the buffer was completely consumed */
+ return pkt->size;
+}
+
+static av_cold int decode_init(AVCodecContext *avctx)
+{
+ BMVDecContext * const c = avctx->priv_data;
+
+ c->avctx = avctx;
+ avctx->pix_fmt = AV_PIX_FMT_PAL8;
+
+ c->frame = c->frame_base + 640;
+
+ return 0;
+}
+
+AVCodec ff_bmv_video_decoder = {
+ .name = "bmv_video",
+ .long_name = NULL_IF_CONFIG_SMALL("Discworld II BMV video"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_BMV_VIDEO,
+ .priv_data_size = sizeof(BMVDecContext),
+ .init = decode_init,
+ .decode = decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+};
projects / platform / upstream / libav.git / commitdiff